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BEDIA level - monitoring - probes

In touch with the medium

Rev US3 ndash 270301

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Index

Descriptions and Functions helliphellip 3

Probes with Connector thread M27 x 1 helliphellip 4

Probes with Connector bajonett 16 S helliphellip 5-6

Probes with Connector Cannon bajonett 10 SL helliphellip 7

Probes with cable Connector hellip 8-9

Probes with Connector bajonett DIN 72585 hellip 10

Probes with Connector DIN 43650 helliphelliphelliphellip 11

Technical data for MIN- und MAX-probes helliphellip 12

Installation instruction 13

Probes with MIL-approval 14

Technical data for probes with MIL-approval helliphellip 15

Probes with EX-approvalhellip 16

Technical data for probes with EX-approval helliphellip 17

Certificate of Conformity BVS 94C1001 helliphellip 18-19

Probes according to the conductivi ty principle 20

Technical data for probes according to the conductivity principle hellip 21

Level monitoring in the oil sump helliphellip 22

Accessories 23

Control and Power Supply Unit hellip 24

Probes for liquids including high viscosity media and powders hellip 25

Technical data for probes for liquids including high viscosity media and powders hellip 26-27

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page 3

GENERAL DESCRIPTION

Level Monitoring Probe

BEDIA probes are designed to monitor the level of water oil and other liquids with similarthermal conductivities They are used in engines commercial vehicles boats generators

compressors etc to monitor the coolant oil and fuel levels In boats they are also used tomonitor the supply and sewage tanks as well as bilge waterBEDIA probes are very reliable and are easy to use in automatic filling systems e g motor

oil supply and fuel tanks etc

The BEDIA probes offer the benefit of sensing critical operating conditions at a much earlier

stage than the pressure-operated switches or thermal detectors used today for monitoringengines Thermal detectors often respond too late because the medium being monitored isno longer present and the temperature rise is not transmitted to the sensor Pressure-

operated switches will indicate only when there is hardly any oil left i e too late for theengineThe BEDIA Level Monitoring Probe however will respond before the oil level is low enough

to damage the engine

A distinct advantage of the BEDIA level monitoring probes over floatswitches is their

compact design and high resistance vibration As they do not contain any moving parts theirperformance cannot be impaired by dirt or metal particles in suspension in the fluid TheBEDIA probes also do not pass current through the medium The sensor being isolated

eliminates the possibility of electrolysis in the system

Technical description

The BEDIA level monitoring probes operate on the principle of electrical capacitancechanges arising when an electrode surrounded by air is immersed in liquid This capacitance

change causes an electric circuit to oscillate switching the output transistor off The use oflatest state-of-the-art hybrid technology allows the sensor and the electronic circuitry to beenclosed in a single sealed unit

The output signal will be completed as soon as the sensor emerges from the medium whenminimum level is monitored or as soon as it is immersed in the medium when maximumlevel is monitored A load of 1 A (with 12 V = 12 W with 24 V = 24W) may be connected to

this pole To connect larger electrical loads it is necessary to interconnect a relay A free-wheeling diode has to be built at the loads to protect it from overvoltage as caused byinductive loads (see technical data) The output signal is delayed in order to prevent false

indication when the liquid is temporarily above or below the set limit

Integral control function

The BEDIA probes have an integral control function When the electrics are switched onthere is an output signal for 2 seconds showing that the probe and circuit are working

properly If there is no output signal the probe and circuit should be examined This feature

enables the probes to be checked remotely for correct operation andor wire break-ageIn complex systems such as in boats it is often difficult to physically check conventional

probes floatswitches and their wiring

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page 4

Probe with threaded connector M 27 x 1 Environmental protection IP67 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal output

minus potentialThread Monitoring

display

Integral

controlfunction

Response

delay

Type Aqueous liquids

Ref No

Oil and

fuelRef No

M 14 x 15 MIN 2 sec 7 sec 421 603 421 623

M 14 x 15 MIN 2 sec 7 sec 1 ---- 422 293

M 14 x 15 MIN 0 sec 7 sec ---- 421 634

M 14 x 15 MIN 2 sec 20 sec 421 617 ----M 14 x 15 MAX 0 sec 7 sec 2 ---- 422 299M 14 x 15 MAX 0 sec 7 sec 421 611 421 631M 18 x 15 MIN 2 sec 7 sec 4 420 460 420 461

14ldquo NPTF MIN 2 sec 7 sec 421 607 421 62714ldquo NPTF MIN 2 sec 7 sec 3 421 592

(1) Probe with the sensing point at 15 mm from sensor tip Housing nikeled(2) Probe equipped with overvoltage protection diode

(3) Probe with inbuilt overvoltage protection diode

(4) without approval

Accessories for probes with M 27 x 1 thread

421 642 Straight connector M 27x1 for corrugated tubing NW 10

421 643 90deg connector M 27x1 for corrugated tubing NW 10

421 742 Straight connector M 27x1 with 56 mm cable sealing421 743 90deg connector M 27x1 with 56 mm cable sealing

421 988 Cable with connector 421 742 300 mm421 038 Cable with connector 421 743 300 mm

Technical data see page 12 Installation instruction see page 13

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page 5

Probe with Bayonet connector 16 SEnvironmental protection IP67 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Responsedelay

Aqueousliquids

Ref No

Oil and fuel

Ref No

AqueousliquidsRef No

Oil and fuel

Ref No

M 12 x 1 MIN 2 sec 7 sec 421 404 421 593 ---- ----

M 14 x 15 MIN 2 sec 7 sec 421 575 421 595 425 002 425 003M 14 x 15 MIN 1 sec 17 sec ---- 420 445 ---- ----M 14 x 15 MIN 2 sec 7 sec 421 565 ---- ---- ----M 14 x 15 MAX 0 sec 7 sec 421 579 421 599 425 004 425 005M 14 x 15 MIN 2 sec 2 sec ---- 422 508 ---- ----

M 14 x 15 MAX 0 sec 0 sec ---- 422 511 ---- ----M 14 x 15 MIN 0 sec 0 sec 422 528 ---- ---- ----

M 14 x 15 MAX 2 sec 2 sec ---- 422 509 ---- ----M 14 x 15 MIN 2 sec 15 sec 421 637 ---- ---- ----

M 14 x 15 MIN 1 sec 2 sec 422 502 ---- ---- ----

M 14 x 15 MIN 0 sec 7 sec 421 564 421 590 ---- ----M 14 x 15 MIN 2 sec 0 sec ---- ---- ---- 422 510

M 18 x 15 MIN 2 sec 7 sec 421 570 421 572 425 006 425 007M 18 x 15 MIN 2 sec 7 sec 421 563 ---- ---- ----M 18 x 15 MAX 0 sec 7 sec 421 571 421 573 425 008 425 009

M 18 x 15 MIN 0 sec 7 sec ---- 422 031 ---- ----14ldquoNPTF MIN 2 sec 7 sec 421 577 421 597 425 010 425 011

14ldquoNPTF MIN 1 sec 17 sec 421 401 ---- ---- ----14ldquoNPTF MIN 0 sec 7 sec 421 581 ---- 425 000 ----

14ldquoNPTF MIN 0 sec 20 sec 421 636 ---- ---- ----

14ldquoNPTF MIN 6 sec 15 sec 422 500 ---- ---- ----14ldquoNPTF MAX 0 sec 7 sec 420 993 424 999 425 013 425 012

14ldquoNPTF MIN 0 sec 0 sec ---- 422 529 ---- ----14ldquoNPTF MAX 0 sec 7 sec ---- 424 999 ---- ----

38ldquo NPTF MIN 2 sec 7 sec 420 992 420 994 425 014 425 01538ldquo NPTF MIN 0 sec 7 sec ---- ---- ---- 425 00138ldquoNPTF MAX 0 sec 7 sec ---- ---- ---- 425 029

Probe with the sensing point at 3 to 7 mm from sensor tip M 14 x 15 MIN 1 sec 7 sec 422 295 ---- ---- ----

M 14 x 15 MIN 1 sec 20 sec 422 296 ---- ---- ----

M 14 x 15 MAX 0 sec 7 sec 420 991 ---- ---- ----Probe with the sensing point at 25 mm from sensor tip

M 22 x 15 MIN 1 sec 17 sec 422 501 ---- ---- ----Probe with housing nickeled

M 14 x 15 MIN 2 sec 7 sec 421 513 ---- ---- ----Probe equipped with overvoltage protection diode

Probe equipped with supressor diode

Accessories see following page

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page 6

Accessories for probes with bayonet 16 S

421 672 Straight connector for bayonet 16 S for corrugated tubing NW10

421 673 90deg connector for bayonet 16 S for corrugated tubing NW 10421 772 Straight connector for bayonet 16 S with 56 mm cable sealing

421 773 90deg connector for bayonet 16 S with 56 cable sealing

421 670 Cable with connector 421 672 300 mm421 891 Cable with connector 421 772 1015 mm

421 018 Cable with connector 421 772 1300 mm

421 586 Cable with connector 421 772 3000 mm421 668 Cable with connector 421 673 300 mm421 671 Cable with connector 421 772 800 mm421 585 Cable with connector 421 773 1300 mm421 669 Cable with connector 421 773 5000 mm421 587 Cable with connector 421 773 10000 mm

Technical data see page 12 Installation instruction see page 13

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Probe with Cannon connector for bayonet 10 SL to VG0095342Environmental protection IP67 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Responsedelay

Aqueousliquids

Ref No

Oil and fuel

Ref No

AqueousliquidsRef No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec 421 403 421 504 421 505 421 506M 14 x 15 MAX 0 sec 0 sec ---- ---- 421 508 ----

M 14 x 15 MAX 0 sec 7 sec ---- ---- ---- 421 516M 18 x 15 MIN 2 sec 7 sec 422 512 422 513 421 500 421 501M 18 x 15 MIN 0 sec 0 sec ---- ---- ---- 421 514

M 18 x 15 MAX 2 sec 7 sec ---- 422 514 ---- ----M 18 x 15 MAX 0 sec 7 sec 421 989 421 990 421 502 421 503

M 18 x 15 MAX 0 sec 0 sec --- ---- ---- 421 509

14ldquo NPTF MIN 2 sec 7 sec 421 907 421 908 421 498 421 49914ldquo NPTF MAX 0 sec 7 sec ---- 421 909 ---- ----

12ldquo UNF MIN 2 sec 7 sec ---- 421 584 ---- ----

Accessories for probes with Cannon connector for bayonet 10 SL

421 652 Straight connector for bayonet 10 SL421 885 Straight connector for bayonet 10 SL 90deg

421 646 Cable with connector 3 x 1 with license for cut goods421 653 Cable with connector 421 652 2000 mm421 657 Cable with connector 421 652 5000 mm

421 648 Brazed adapter internal thread M 18 x 15

Technical data see page 12 Installation instruction see page 13

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Probes operating on the capacitive principleEnvironmental protection IP67 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Cable colour brown = +white = -

green = S

Cable colour brown = +white = -

green = S

Environmental protection IP67 DIN 40050 Signal output

minus potential

Signal output

plus potentialThread Monitoring

display

Integral

controlfunction

Monitoring

delay

Cable

lengthin mm

Cable

connec-tion type

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref NoM 12 x 1 MIN 0 sec 7 sec 1000 1 421 580 ---- ---- ----

M 14 x 15 MIN 2 sec 7 sec 190 1 418 152 421 991 425 016 425 017

M 14 x 15 MIN 2 sec 7 sec 190 8 421 927 421 928 ---- ----M 14 x 15 MIN 2 sec 7 sec 2000 1 ---- 421 929 ---- ----

M 14 x 15 MIN 2 sec 7 sec 250 5 ---- 421 072 ---- ----M 14 x 15 MIN 2 sec 7 sec 250 9 421 070 ---- ---- ----

M 14 x 15 MIN 2 sec 7 sec 250 3 ---- 422 525 ---- ----M 14 x 15 MAX 0 sec 7 sec 250 1 421 582 421 993 425 018 425 019M 14 x 15 MIN 0 sec 7 sec 2500 1 422 297 422 298 ---- ----

M 14 x 15 MAX 0 sec 3 sec 250 5 421 569 ---- ---- ----M 14 x 15 MAX 0 sec 7 sec 250 5 ---- 421 568 ---- ----

M 14 x 15 MIN 2 sec 7 sec 250 10 418 154 ---- ---- ----

M 14 x 15 MIN 0 sec 7 sec 550 3 422 506 422 507 ---- ----M 14 x 15 MIN 0 sec 2 sec 550 1 ---- 421 507 ---- ----

M 14 x 15 MAX 0 sec 0 sec 1000 1 ---- ---- 425 300 425 301M 14 x 15 MIN 2 sec 7 sec 300 6 421 601 421 621 ---- ----

M 14 x 15 MIN 0 sec 7 sec 300 6 421 583 ---- ---- ----

M 14 x 15 MIN 2 sec 3 sec 250 1 ---- 422 527 ---- ----() Probe suitable for brake fluid DOT3(1) Cable end without connector(2) Cable w ith 3 pole flat quick-connect terminations 63 in the housing(3) Cable with 3 pole DEUTSCH socket

(4) Cable with 3 pole round G amp H connector(5) Cable with 3 pole Reinshagen connector

(6) Probe with bayonet 16 S with separate cable 421 670 300 mm straight connector

(7) Probe with connector M 27 x 1 with 300 mm cable straight connector 421 642(8) Cable with 3 pole round AMP connector

(9) Cable with 3 flat quick-connect terminations 63 in single housing(10) Cable with 3 pole AMP connector 423 325 and strain relief

(11) Probe 422 524 like the probe 422 225 however with a monitoring of cable defect

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page 9

Environmental protection IP67 DIN 40050 Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Monitoringdelay

Cablelengthin mm

Cableconnec-tion type

Aqueousliquids

Ref No

Oil and fuel

Ref No

Aqueousliquids

Ref No

Oil and fuel

Ref No

M 18 x 15 MIN 2 sec 7 sec 1000 1 ---- 421 591 ---- ----

M 18 x 15 MIN 2 sec 7 sec 400 3 422 515 ---- ---- ----M 18 x 15 MAX 2 sec 7 sec 400 3 422 516 ---- ---- ----

M 18 x 15 MIN 2 sec 7 sec 250 2 422 503 422 504 425 020 425 021M 18 x 15 MAX 0 sec 7 sec 250 1 ---- ---- 425 022 425 023

M 18 x 15 MAX 0 sec 0 sec 1000 1 425 305 425 304 ---- ----

14ldquo NPTF MIN 0 sec 0 sec 250 1 421 566 421 567 ---- ----14ldquo NPTF MAX 0 sec 0 sec 2000 1 ---- ---- 425 030 ----14ldquo NPTF MIN 2 sec 7 sec 250 1 418 153 421 992 425 024 425 02514ldquo NPTF MAX 0 sec 7 sec 250 1 421 999 421 997 425 026 425 02714ldquo NPTF MAX 0 sec 7 sec 250 4 422 505 ---- ---- ----

14ldquo NPTF MIN 2 sec 7 sec 250 1 421 402 ---- ---- ----14ldquo NPTF MIN 2 sec 7 sec 550 3 422 225 422 226 ---- ----

14ldquo NPTF MIN 2 sec 7 sec 550 11 422 524 ---- ---- ----14ldquo NPTF MAX 0 sec 7 sec 550 3 422 521 422 522 425 302 ----

14ldquo NPTF MIN 2 sec 7 sec 300 6 421 605 421 625 ---- ----

14ldquo NPTF MIN 2 sec 7 sec 300 7 421 987 ---- ---- ----14ldquo NPTF MIN 0 sec 7 sec 550 3 ---- ---- ---- 425 303

38NPTF MAX 0 sec 7 sec 1000 1 ---- ---- ---- 425 031

R 38ldquo MAX 0 sec 7 sec 250 1 421 998 ---- ---- ----R 38ldquo MAX 0 sec 7 sec 250 3 422 286 ---- ---- ----

R 38ldquo MAX 0 sec 0 sec 360 3 ---- 421 510 ---- ----G 12 MIN 0 sec 0 sec 250 9 421 515 ---- ---- ----

G 1 MIN 2 sec 7 sec 250 1 425 307 ---- ---- ----Probe with the sensing point at 35 mm from sensor tip

R 38ldquo MAX 0 sec 7 sec 2000 1 422 523 ---- ---- ----G 1ldquo MAX 0 sec 7 sec 250 1 425 306 ---- ---- ----

() Probe suitable for brake fluid DOT3

(1) Cable end without connector(2) Cable with 3 pole flat quick-connect terminations 63 in the housing(3) Cable with 3 pole DEUTSCH socket(4) Cable with 3 pole round G amp H connector(5) Cable with 3 pole Reinshagen connector

(6) Probe with bayonet 16 S with separate cable 421 670 300 mm straight connector(7) Probe with connector M 27 x 1 with 300 mm cable straight connector 421 642

(8) Cable with 3 pole round AMP connector(9) Cable with 3 flat quick-connect terminations 63 in single housing

(10) Cable with 3 pole AMP connector 423 325 and strain relief

(11) Probe 422 524 like the probe 422 225 however with a monitoring of cable defect

Cable automotive cable FLR 3x075 black temp range - 50degC to +150degCTechnical data see page 12 Installation instruction see page 13

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page 10

Probe with connector DIN 72 585Environmental protection 69K DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Monitoringdelay

Aqueousliquids

Ref No

Oil and fuel

Ref No

Aqueousliquids

Ref No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec 420 400 420 431 420 401 420 432M 14 x 15 MIN 0 sec 7 sec ---- 420 446 ---- ----M 14 x 15 MIN 0 sec 2 sec 420 419 420 447 ---- 420 443M 14 x 15 MAX 0 sec 7 sec 420 402 420 433 420 403 420 434M 14 x 15 MAX 0 sec 0 sec ---- ---- 420 413 420 414

M 14 x 15 MIN 2 sec 60 min ---- 420 444 ---- ----

M 14 x 15 MIN 2 sec 60 sec ---- 420 449 ---- ----M 18 x 15 MIN 2 sec 7 sec 420 404 420 435 420 405 420 436

M 18 x 15 MIN 0 sec 7 sec 420 417 ---- ---- ----M 18 x 15 MAX 0 sec 7 sec 420 406 420 437 420 407 420 438

M 18 x 15 MAX 0 sec 0 sec ---- 420 430 ---- ----

R 38ldquo MAX 0 sec 7 sec 420 420 420 421 ---- ----G 38ldquo MAX 0 sec 0 sec ---- ---- ---- 420 448

14ldquo NPTF MIN 2 sec 7 sec 420 408 420 439 420 409 420 44014ldquo NPTF MIN 0 sec 7 sec 420 418 ---- ---- ----14ldquoNPTF MAX 0 sec 7 sec 420 410 420 441 420 411 420 442

14ldquoNPTF MIN 1 sec 17 sec 420 415 ---- ---- ----Probe with the sensing point 43mm from sensor tip

M 14 x 15 MIN 1 sec 17 sec 420 412

Accessories for probes with connector DIN 72585

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page 11

420 700 Straight connector for bayonet 16 S for corrugated tubing NW10

420 701 90deg connector for bayonet 16 S for corrugated tubing NW 10420 702 Connector 90deg for cable

420 703 Straight connector for cable420 704 Cable with connector 421 672 300 mm

420 705 Cable with connector 420 703 300 mm

420 706 Cable with connector 420 702 1000 mm420 707 Cable with connector 420 703 1000 mm

420 708 Cable with connector 420 702 3000 mm

Technical data see page 12 Installation instruction see page 13

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page 12

Probe with connector DIN 43 650

Environmental protection 65 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal output

minus potential

Signal output

plus potentialThread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref NoM 14 x 15 MIN 2 sec 7 sec 420 600 420 620 420 601 420 621

M 14 x 15 MAX 0 sec 7 sec 420 602 420 622 420 603 420 623M 18 x 15 MIN 2 sec 7 sec 420 604 420 624 420 605 420 625M 18 x 15 MAX 0 sec 7 sec 420 606 420 626 420 607 420 62714ldquo NPTF MIN 2 sec 7 sec 420 608 420 628 420 609 420 62914ldquoNPTF MAX 0 sec 7 sec 420 610 420 630 420 611 420 631

R 38ldquo MAX 0 sec 0 sec ---- ---- ---- 420 650

Accessories for probes with connector

421 880 connector M3x35 to DIN 43 650

Technical data see page 12 Installation instruction see page 13

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Technical data for minimum and maximum probes

Operating voltage 12V-24V (-25+50)

Output current 1 A over the whole operating voltage range

Short-circuit and overload protected overt the entire temperature range

At minus switching probes the minus potential is switched through At plus switching probes the plus potential is switched through

Sensing point 18 mm +- 6 mm

Closed-circuit current consumption approx 6 mA

Voltage spikes 70 V dropping to Un in 270 ns

Medium temperature Water - 30degC to + 110degC

Oil - 30degC to + 125degC

Ambient temperature - 30degC to + 100degC

Storage temperature - 50degC to + 125degC

Response delay see table

Integral control function see table

Shock resistance 50 g half-sine 11 ms

Pressure on sensor up to 25 bar3675 PSI

Reverse polarity protection in-built between plus and minus terminal

Mounting attitude optional

Housing brass CuZn39Pb3

capacitively connected to frame

Weight approx 125 g

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or plus

potential to the minus terminal as otherwise the probes may be destroyed- Plus switching probes Do not connect plus potential to the signal terminal or minus

potential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

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page 14

Installation Instruction for BEDIA Level Monitoring Probes

BEDIA Level Monitoring Probes may be installed in any attitude

Please observe the following instructions when installing the probe

1 To prevent false indication install the probe in a smooth area where it is not affected bysplashing media as may be the case when it is installed in a gear unit or directly in the

motor oil sump

2 To prevent false indication install the sensor at least 15mm from the wall away

Only for water - sensors

3 False indication may also occur if the sensor is mounted from above in a plasticcontainer with the medium carrying no potential In all other mounting attitudes the

housing will be in contact with the medium so as to ensure potential is available

4 Connection Diagram

Minus switching probes Plus switching probes

5 Connection of the cables free wheeling diode

Bayonet 16SThread M27x1

Bayonet 10SL Bayonet DIN 72585Bayonet DIN 43650

Cable

+ A 1 Brown

- B 2 White

S C 3 Green

sensor

wall

gt15mm

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page 15

Probe with bayonet 10 SL to VG 0095342Environmental protection 67 DIN 40050

Probe suitable for aqueous media Connection diagram

Signal outputminus potential

Signal outputplus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref No

M 18 x 15 MIN 1 sec 3 sec 421 903 421 950 421 470 421 471

M 18 x 15 MAX 1 sec 3 sec 421 951 421 952 421 472 421 473M 18 x 15 MIN 2 sec 7 sec ---- 421 984 ---- ----

M 18 x 15 MAX 0 sec 7 sec ---- 421 990 ---- ----

Probe with bayonet 10 SL to VG 0095342

Probe suitable for aqueous media

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Function-control

Integralcontrolfunction

Monitoringdelay

Aqueousliquids

Ref No

Oil and fueRef No

Aqueousliquids

Ref No

Oil and fueRef No

M 18 x 15 MIN 1 sec 3 sec 200 421 906 421 957 421 478 421 479M 18 x 15 MAX 1 sec 3 sec 200 421 958 421 959 421 480 421 481M 18 x 15 MIN 1 sec 3 sec 450 421 960 ---- ---- ----

Accessories for probes with connector Cannon for bajonet 10 SL

421 652 Straight connector for bayonet 10 SL

421 885 Straight connector for bayonet 10 SL421 646 Cable with connector 3 x 1 with license for cut goods

421 653 Cable with connector 421 652 2000 mm

421 657 Cable with connector 421 652 5000 mm421 648 Brazed adapter internal thread M 18 x 15

Technical data see following pages

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page 16

Technical data for minimum and maximum probes

Mechanical dataHousing stainless non-magneticThread M18x15 max tightening torque 30 NmSealing ring (not supplied with the system) 18x22 DIN 7603-CUFitting Cu-Zn alloy material No 20401

Connection see table to VG 0095342Isolation of sensor Tefzel ETFE

Marking function type number manufacturing date voltageMounting attitude optional immersion depth horizontal approx 3 mm plusmn 2 mm

immersion depth vertical approx 20 mm plusmn 6 mmMass approx 200 g Ambient temperature - 30degC to + 125degC

Storage temperature - 55degC to + 125degCMedium temperature - 30degC to + 125degCSinusoidal vibration (peak) 2 - 25 Hz 16mm amplitude

25 - 420 Hz 4 g amplitude

420 - 1330 Hz 5 g amplitude1330 - 2700 Hz 10 g amplitude2700 - 5000 Hz 25 g amplitude

Relative humidity up to 100

Environment Shock (peak)

50 g half-sine 11 ms

EMC IEC 801 (1-4) lt 500 mV rmsdepending on cables

EMC to VG 95373 only with external filterInterference suppression to VDE0871 limit B

Pressure on sensor max 25 bar3675 PSIMedia to be monitored water cooling water seawater oil fuel hydraulic oil

brake fluidDependability The performance is not impaired by small deposits on

the probe

Electric data Protection against reversepolarity

Voltage spikes

between UB and frame

70 V dropping to UN in270

Voltage rating 9 - 36 V Hysteresis of response max plusmn 5 mm aroundthe sensing point

Output open collector switchingminus potential

Response time - bdquolevelacceptableldquo

typically 1 s (05 s to15 s)

Closed-circuit current at24 V

lt 10 mA Response time - bdquolevelunacceptableldquo

Recovery time

typically 3 s (1 s to 4 s)

lt 2 s

Power consumption closed-circuit current plus

switching current

Integral control function see table

Switching capacity max 1 A continuous currentin the voltage range indicated

Terminal connection A = + UB B = - UB C = output signal

Load resistive and inductive Potential of housing

Dielectric strength

physically isolated fromplus UB and minus UB

VDE

0100500 VDC 1 minLoad inductance 500 mH Insulation resistance VDE 0160500 VAC50

Hz 1 minDielectric resistance gt 10 M Ohm

Voltage through lt 0 5 V

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or pluspotential to the minus terminal as otherwise the probes may be destroyed

- Plus switching probes Do not connect plus potential to the signal terminal or minuspotential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

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page 17

Probes operating on the capacitive principle Ex approvedEnvironmental protection 65 DIN 40050

Probe suitable for aqueousmedia

Probe suitable for oil and fuel

Certificate of ConformityEN 50014-1977 + A1 - A5 (VDE 01700171 Part 1187) General requirementsEN 50020-1977 + A1 - A2 (VDE 01700171 Part 7187) intrinsic safety bdquoIldquo

EEx Ia I

Probe for mining applications

Signal outputMinus potential

ThreadMonitoring

displayIntegralcontrolfunction

Monitoringdelay

Voltage (voltDC)

Aqueous liquids

Ref No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec DC 9-13 V 421 934 421 936M 14 x 15 MAX 2 sec 7 sec DC 9-13 V 421 935 421 937M 18 x 15 MIN 2 sec 7 sec DC 9-13 V 421 930 421 932

M 18 x 15 MAX 2 sec 7 sec DC 9-13 V 421 931 421 93314ldquo NPTF MIN 2 sec 7 sec DC 9-13 V 421 938 421 940

14ldquo NPTF MAX 2 sec 7 sec DC 9-13 V 421 939 421 941

UB+ = Brown

Minus = WhiteSignal = Green

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page 18

Technical data for minimum and maximum probes

Operating voltage 9 - 13 V DC

Closed-circuit current consumption approx 6 mA

Sensing point 20 mm plusmn 6 mm from sensor tip

Power output at the signal output open collector Should be limited to max 20 mA

by the user

Storage temperature - 30degC to +125degCOperating temperature - 30degC to +125degC

Fault indicating delay approx 7 sec

Integral control function approx 2 sec

Shock 50 g half-sine 11 ms

Vibration to GL requirements for type certified tests

Admissible pressure on sensor 5 bar735 PSI

Environmental protection IP 65

Protection against reverse polarity in-built between plus and minus terminal

Mounting attitude horizontal preferred

Housing brass CuZn39Pb3

Sensor coating ETFE Tefzelreg

Weight with 10 m cable approx 800 g

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page 19

Certificate of Conformity BVS 94C1001

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page 20

Certificate of Conformity BVS 94C1001

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page 21

Conductivity probeEnvironmental protection 65 DIN 40050

Probe suitable for aqueous media

Conductivity probe with bayonet 16 S

Signal outputMinus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous liquids

Ref No

M 14 x 15 MIN 2 sec 7 sec 422 200

M 14 x 15 MAX 2 sec 7 sec 422 201

14ldquo NPTF MIN 2 sec 7 sec 422 20414ldquo NPTF MAX 2 sec 7 sec 422 205

Accessories for probes with bayonet 16 S

421 672 Straight connector for bayonet 16 S for corrugated tubing NW 10421 673 90deg connector for bayonet 16 S for corrugated tubing NW 10421 772 Straight connector for bayonet 16 S with 56 mm cable sealing421 773 90deg connector for bayonet 16 S with 56 mm cable sealing

421 670 Cable with connector 421 672 300 mm

421 018 Cable with connector 421 772 1015 mm421 586 Cable with connector 421 772 1300 mm

421 668 Cable with connector 421 772 3000 mm421 671 Cable with connector 421 673 300 mm

421 891 Cable with connector 421 773 800 mm

421 585 Cable with connector 421 773 1300 mm

421 669 Cable with connector 421 773 5000 mm

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page 22

Technical Data for minimum and maximum probes

Voltage rating DC 16 - 32 V

Power consumption typically 7 mA

Switching capacity 3 W (resistive load)

Output minus switching

Voltage drop approx 35 V with 3 W lamp load

Load dump protection 70 V 270 ns

Protection from fault conditions to VDE 0939

Lamp test in-built (approx 3 s)

Fault indicating delay approx 7 s

Free-wheeling diode Inductive loads A free wheeling diode eg 1N4007 has to bemounted at the load

Protection against reverse polarity in-built between plus and minus terminalObserve correct connection of plus and signal terminals

Operating temperature - 40degC to + 120degC

Storage temperature - 40degC to + 120degC

Admissible pressure on sensor 2 bar

Max tightening torque on thread 30 Nm

Mounting attitude optional

Housing brass MS CuZnPb3nickel-plated potential-free

Sensor coating Tefzel

983214

ETFE

Sensor brass MS CuZn39Pb3(immersed in the medium)

Weight approx 100 g

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page 23

Level monitoring in the oil sump

Which are the benefits of a level monitoring system in the oil sump over conventional

pressure and temperature sensorsTemperature sensors indicate very slowly When motor oil is lost e g by tubing breakagethe component temperature can no longer be conducted to the sensors

The lower limit value of oil pressure switches or sensors is set low (low oil pressure with themotor running at no load) At rated motor speed and with too little oil in the oil circuit an oil-airmixture may be produced without that a signal is put out The components are no longer

sufficiently cooled and lubricatedIn the two events described above the output signal is available either too late or even not atall so that the motor will be damaged The level monitoring system however indicates even

before the oil level becomes too low i e as soon as the oil level has fallen 10 to 20 mmbelow the minimum marking on the dipstick Oil pressure and oil temperature indication isalways ensured

Functional diagram

Installation instructions

1 Drain the motor oil

2 Secure the adjustable elbow coupling with the tubing and the sensor support at themotor The sensor housing should be adjustable through oblong holes to determine theminimum point

3 Install the ventilation for the crankcase (e g inspection hole cover)

4 Install and connect the sensor

5 Check for correct electrical function The minimum sensor must indicate now

6 Refill the oil up to the minimum marking on the dipstick

7 Move the sensor and support slowly down until the signal is no longer availableTheswitch point of the sensor is now exactly at the minimum oil level of the motor

8 Move the sensor down by another 10 to 20 mm and fix it The signal bdquooil level too lowldquowill now be put out when the level is approx 10 to 20 mm below the minimum markingon the dipstick

Legend Ref Nr

1 Tubing complete with 350 mm pipecoupling

421 660

Tubing complete with 450 mm pipe

coupling

421 661

Tubing complete with 550 mm pipecoupling

421 659

2 Sensor support 454 134

3 PA pipe available in meters 421 662

4 Level monitoring sensor

Oil MIN 9 - 36 V 421 595Oil MAX 9 - 36 V 421 599

5 withoutcable

withcable

Straight connector 421 672 421 67090deg connector 421 673 421 671

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page 24

Accessories

Plug Connection

1 Straight taper M 27 x 1 orstraight taper bayonet 16 S

2 Gripping seal-ring NW 103 Sleeve nut for NH9-1513

A A Tapered rubber ring must

point into the sleeve nutB B Tube polyflex NW 10Part-No 421 642 M 27 x 1

Part-No 421 672 Bayonet 16 S

Plug Connection

1 Taper M 27 x 1 90deg or

2 Tape 90deg bayonet 16 S3 Gripping seal-ring NW 10

A Tapered rubber ring mustpoint into the sleeve nut

B Tube polyflex NW 10

Part-No 421 643 M 27 x 1Part-No 421 673 Bayonet 16 S

Screw-in Adapter

Outside M 22 x 15Inside M 14 x 15

Part-No 421 640

Braze-in Adapter

Inside 14ldquo NPFTPart-No 421 641

Inside M 14 x 15Part-No 421 644

Cable and Plug

Connection for Probes Approved by Classifica-tion Societies

A Cablem Part-No 421 646

B Plug connectionPart-No 421 645

Plug connection fittedwith 2 m cablePart-No 421 647

Inside M 18 x 15

Part-No 421 648

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page 25

Control and Power Supply Unit 110220 V AC 1224 V DC Order No 421 650

Up to three probes can

be fed from this powersupply unit A relay 3 Amax with one normally

open and one normallyclosed contact is fittedwhich can be used for

additional control tasks A power supply unit isavailable for connection

to 220 V

The voltage for the

relay contacts must notbe taken from thepower supply unit

Housing plastic with control lamps MIN + MAX 110 x 75 x 65 _________________________________________________________________________Control Unit Best-Nr 421 651

for automatic filling and emptying of liquids This unit is designed to control two bdquominimumldquoprobes Probe 2 monitors the maximum liquid level probe 1 the minimum level An outputrelay with a change-over contact is switched automatically for external control tasks

Relays 1 and 2 are switched to conduct when the liquids falls below minimum level Whenthe liquid level reaches maximum relay circuits 1 and 2 are automatically interrupted

LED-display

bull no display liquid level above

bull maximum LED bdquomaximumldquo lights liquid Level is between maximum and minimum andis falling

bull Both LEDrsquos light liquid level is below minimum or is between minimum and maximumand is rising Contacts r1 and r2 are closed

Two bdquominimumldquo minus switching probes with built-in control function are used for this

control The self-control is only visible when both probes are immersed in liquid The signalappears for about 2 seconds when the power supply is switched onFor this period the output (contact r1 and r2) is conducting The voltage for the relay contacts

must not be taken from the power supply unit

Technical Data for Control Unit

Operating 110220 V AC or 1224 V DC Mounting position variable

Relay relay contact t 3 Amax

Temperature - 30 degC to + 75 degC

Protective system IP 54

Control Unit for filling or emptying

Housing plastic with control lamp 110 x 75 x 65 Part No 421 651

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page 26

Probes operating on the capacitive principle

This probe is self-adjustable and can be used for liquids including high viscosity media and

powders

Short description

This BEDIA-Level Sensor is suitable for liquids including high viscosity media and powdersIt operates on the principle of electrical capacitance changes arising when an electrodesurrounded by air is immersed in a media This capacitance change causes an electric

circuit to oscillate thus switching the output transistor off The use of latest state-of-the-arthybrid technology allows the probe and the electronic circuitry to be enclosed in a singlesealed unit

ApplicationThe BEDIA-Level Sensor with itrsquos large temperature range and wide sensitivity adjusting

range is suitable for a wide spread of applications process control petrochemical industrytank level monitoring bottle and crate washing systems in breweries etc

Operating modes

Minimum switching Normally the sensing probe is immersed and the green LED indicates

As the level drops below the probe the green LED extinguishes

Maximum switching Normally the sensing probe is not immersed and the green LED

indicates As the level rises above the probe the green LED extinguishes

Diagram of working method

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page 27

Technical data

Circuit voltage 9 - 36 V DC Short circuit and overload

protectedPower consumption normal operation typ17 mA

fault operation typ10 mATime-delay typ01 sec

OutputTransistor plus switching 300 mA (500 mA short-time) short-circuit and overload proof with integral suppression diode

Terminal

configuration

max 1 mm2 screw terminals (AWG 17) Operating

temperature range

- 20degC to + 130degC

- 20degC to + 85degCMaterial - probe envelope PA 12-Gf

(polyamide with glass fibre)- fitting V2A (DIN 14305AISI 303)

- housing cover PA6-3-T (trogamide -transparent)

- O-ring FKM (viton)

Cable length max 300 m

Mounting plane horizontal (by preference Cable gland PG 7Max switchingpoint hysteresis

sensor diameter Mass ca 250 g

Cable automotive cable FLR 3 x 075 black Temp range -50degC to + 150degCBEDIA-part-no for cut goods 422 210

Dimensional diagram

A B BEDIA part no

G 34A 16mm 422 900

frac34ldquo NPT 21mm 422 901

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page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

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7182019 BEDIA Level Monitoring

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Index

Descriptions and Functions helliphellip 3

Probes with Connector thread M27 x 1 helliphellip 4

Probes with Connector bajonett 16 S helliphellip 5-6

Probes with Connector Cannon bajonett 10 SL helliphellip 7

Probes with cable Connector hellip 8-9

Probes with Connector bajonett DIN 72585 hellip 10

Probes with Connector DIN 43650 helliphelliphelliphellip 11

Technical data for MIN- und MAX-probes helliphellip 12

Installation instruction 13

Probes with MIL-approval 14

Technical data for probes with MIL-approval helliphellip 15

Probes with EX-approvalhellip 16

Technical data for probes with EX-approval helliphellip 17

Certificate of Conformity BVS 94C1001 helliphellip 18-19

Probes according to the conductivi ty principle 20

Technical data for probes according to the conductivity principle hellip 21

Level monitoring in the oil sump helliphellip 22

Accessories 23

Control and Power Supply Unit hellip 24

Probes for liquids including high viscosity media and powders hellip 25

Technical data for probes for liquids including high viscosity media and powders hellip 26-27

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page 3

GENERAL DESCRIPTION

Level Monitoring Probe

BEDIA probes are designed to monitor the level of water oil and other liquids with similarthermal conductivities They are used in engines commercial vehicles boats generators

compressors etc to monitor the coolant oil and fuel levels In boats they are also used tomonitor the supply and sewage tanks as well as bilge waterBEDIA probes are very reliable and are easy to use in automatic filling systems e g motor

oil supply and fuel tanks etc

The BEDIA probes offer the benefit of sensing critical operating conditions at a much earlier

stage than the pressure-operated switches or thermal detectors used today for monitoringengines Thermal detectors often respond too late because the medium being monitored isno longer present and the temperature rise is not transmitted to the sensor Pressure-

operated switches will indicate only when there is hardly any oil left i e too late for theengineThe BEDIA Level Monitoring Probe however will respond before the oil level is low enough

to damage the engine

A distinct advantage of the BEDIA level monitoring probes over floatswitches is their

compact design and high resistance vibration As they do not contain any moving parts theirperformance cannot be impaired by dirt or metal particles in suspension in the fluid TheBEDIA probes also do not pass current through the medium The sensor being isolated

eliminates the possibility of electrolysis in the system

Technical description

The BEDIA level monitoring probes operate on the principle of electrical capacitancechanges arising when an electrode surrounded by air is immersed in liquid This capacitance

change causes an electric circuit to oscillate switching the output transistor off The use oflatest state-of-the-art hybrid technology allows the sensor and the electronic circuitry to beenclosed in a single sealed unit

The output signal will be completed as soon as the sensor emerges from the medium whenminimum level is monitored or as soon as it is immersed in the medium when maximumlevel is monitored A load of 1 A (with 12 V = 12 W with 24 V = 24W) may be connected to

this pole To connect larger electrical loads it is necessary to interconnect a relay A free-wheeling diode has to be built at the loads to protect it from overvoltage as caused byinductive loads (see technical data) The output signal is delayed in order to prevent false

indication when the liquid is temporarily above or below the set limit

Integral control function

The BEDIA probes have an integral control function When the electrics are switched onthere is an output signal for 2 seconds showing that the probe and circuit are working

properly If there is no output signal the probe and circuit should be examined This feature

enables the probes to be checked remotely for correct operation andor wire break-ageIn complex systems such as in boats it is often difficult to physically check conventional

probes floatswitches and their wiring

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page 4

Probe with threaded connector M 27 x 1 Environmental protection IP67 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal output

minus potentialThread Monitoring

display

Integral

controlfunction

Response

delay

Type Aqueous liquids

Ref No

Oil and

fuelRef No

M 14 x 15 MIN 2 sec 7 sec 421 603 421 623

M 14 x 15 MIN 2 sec 7 sec 1 ---- 422 293

M 14 x 15 MIN 0 sec 7 sec ---- 421 634

M 14 x 15 MIN 2 sec 20 sec 421 617 ----M 14 x 15 MAX 0 sec 7 sec 2 ---- 422 299M 14 x 15 MAX 0 sec 7 sec 421 611 421 631M 18 x 15 MIN 2 sec 7 sec 4 420 460 420 461

14ldquo NPTF MIN 2 sec 7 sec 421 607 421 62714ldquo NPTF MIN 2 sec 7 sec 3 421 592

(1) Probe with the sensing point at 15 mm from sensor tip Housing nikeled(2) Probe equipped with overvoltage protection diode

(3) Probe with inbuilt overvoltage protection diode

(4) without approval

Accessories for probes with M 27 x 1 thread

421 642 Straight connector M 27x1 for corrugated tubing NW 10

421 643 90deg connector M 27x1 for corrugated tubing NW 10

421 742 Straight connector M 27x1 with 56 mm cable sealing421 743 90deg connector M 27x1 with 56 mm cable sealing

421 988 Cable with connector 421 742 300 mm421 038 Cable with connector 421 743 300 mm

Technical data see page 12 Installation instruction see page 13

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page 5

Probe with Bayonet connector 16 SEnvironmental protection IP67 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Responsedelay

Aqueousliquids

Ref No

Oil and fuel

Ref No

AqueousliquidsRef No

Oil and fuel

Ref No

M 12 x 1 MIN 2 sec 7 sec 421 404 421 593 ---- ----

M 14 x 15 MIN 2 sec 7 sec 421 575 421 595 425 002 425 003M 14 x 15 MIN 1 sec 17 sec ---- 420 445 ---- ----M 14 x 15 MIN 2 sec 7 sec 421 565 ---- ---- ----M 14 x 15 MAX 0 sec 7 sec 421 579 421 599 425 004 425 005M 14 x 15 MIN 2 sec 2 sec ---- 422 508 ---- ----

M 14 x 15 MAX 0 sec 0 sec ---- 422 511 ---- ----M 14 x 15 MIN 0 sec 0 sec 422 528 ---- ---- ----

M 14 x 15 MAX 2 sec 2 sec ---- 422 509 ---- ----M 14 x 15 MIN 2 sec 15 sec 421 637 ---- ---- ----

M 14 x 15 MIN 1 sec 2 sec 422 502 ---- ---- ----

M 14 x 15 MIN 0 sec 7 sec 421 564 421 590 ---- ----M 14 x 15 MIN 2 sec 0 sec ---- ---- ---- 422 510

M 18 x 15 MIN 2 sec 7 sec 421 570 421 572 425 006 425 007M 18 x 15 MIN 2 sec 7 sec 421 563 ---- ---- ----M 18 x 15 MAX 0 sec 7 sec 421 571 421 573 425 008 425 009

M 18 x 15 MIN 0 sec 7 sec ---- 422 031 ---- ----14ldquoNPTF MIN 2 sec 7 sec 421 577 421 597 425 010 425 011

14ldquoNPTF MIN 1 sec 17 sec 421 401 ---- ---- ----14ldquoNPTF MIN 0 sec 7 sec 421 581 ---- 425 000 ----

14ldquoNPTF MIN 0 sec 20 sec 421 636 ---- ---- ----

14ldquoNPTF MIN 6 sec 15 sec 422 500 ---- ---- ----14ldquoNPTF MAX 0 sec 7 sec 420 993 424 999 425 013 425 012

14ldquoNPTF MIN 0 sec 0 sec ---- 422 529 ---- ----14ldquoNPTF MAX 0 sec 7 sec ---- 424 999 ---- ----

38ldquo NPTF MIN 2 sec 7 sec 420 992 420 994 425 014 425 01538ldquo NPTF MIN 0 sec 7 sec ---- ---- ---- 425 00138ldquoNPTF MAX 0 sec 7 sec ---- ---- ---- 425 029

Probe with the sensing point at 3 to 7 mm from sensor tip M 14 x 15 MIN 1 sec 7 sec 422 295 ---- ---- ----

M 14 x 15 MIN 1 sec 20 sec 422 296 ---- ---- ----

M 14 x 15 MAX 0 sec 7 sec 420 991 ---- ---- ----Probe with the sensing point at 25 mm from sensor tip

M 22 x 15 MIN 1 sec 17 sec 422 501 ---- ---- ----Probe with housing nickeled

M 14 x 15 MIN 2 sec 7 sec 421 513 ---- ---- ----Probe equipped with overvoltage protection diode

Probe equipped with supressor diode

Accessories see following page

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page 6

Accessories for probes with bayonet 16 S

421 672 Straight connector for bayonet 16 S for corrugated tubing NW10

421 673 90deg connector for bayonet 16 S for corrugated tubing NW 10421 772 Straight connector for bayonet 16 S with 56 mm cable sealing

421 773 90deg connector for bayonet 16 S with 56 cable sealing

421 670 Cable with connector 421 672 300 mm421 891 Cable with connector 421 772 1015 mm

421 018 Cable with connector 421 772 1300 mm

421 586 Cable with connector 421 772 3000 mm421 668 Cable with connector 421 673 300 mm421 671 Cable with connector 421 772 800 mm421 585 Cable with connector 421 773 1300 mm421 669 Cable with connector 421 773 5000 mm421 587 Cable with connector 421 773 10000 mm

Technical data see page 12 Installation instruction see page 13

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Probe with Cannon connector for bayonet 10 SL to VG0095342Environmental protection IP67 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Responsedelay

Aqueousliquids

Ref No

Oil and fuel

Ref No

AqueousliquidsRef No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec 421 403 421 504 421 505 421 506M 14 x 15 MAX 0 sec 0 sec ---- ---- 421 508 ----

M 14 x 15 MAX 0 sec 7 sec ---- ---- ---- 421 516M 18 x 15 MIN 2 sec 7 sec 422 512 422 513 421 500 421 501M 18 x 15 MIN 0 sec 0 sec ---- ---- ---- 421 514

M 18 x 15 MAX 2 sec 7 sec ---- 422 514 ---- ----M 18 x 15 MAX 0 sec 7 sec 421 989 421 990 421 502 421 503

M 18 x 15 MAX 0 sec 0 sec --- ---- ---- 421 509

14ldquo NPTF MIN 2 sec 7 sec 421 907 421 908 421 498 421 49914ldquo NPTF MAX 0 sec 7 sec ---- 421 909 ---- ----

12ldquo UNF MIN 2 sec 7 sec ---- 421 584 ---- ----

Accessories for probes with Cannon connector for bayonet 10 SL

421 652 Straight connector for bayonet 10 SL421 885 Straight connector for bayonet 10 SL 90deg

421 646 Cable with connector 3 x 1 with license for cut goods421 653 Cable with connector 421 652 2000 mm421 657 Cable with connector 421 652 5000 mm

421 648 Brazed adapter internal thread M 18 x 15

Technical data see page 12 Installation instruction see page 13

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page 8

Probes operating on the capacitive principleEnvironmental protection IP67 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Cable colour brown = +white = -

green = S

Cable colour brown = +white = -

green = S

Environmental protection IP67 DIN 40050 Signal output

minus potential

Signal output

plus potentialThread Monitoring

display

Integral

controlfunction

Monitoring

delay

Cable

lengthin mm

Cable

connec-tion type

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref NoM 12 x 1 MIN 0 sec 7 sec 1000 1 421 580 ---- ---- ----

M 14 x 15 MIN 2 sec 7 sec 190 1 418 152 421 991 425 016 425 017

M 14 x 15 MIN 2 sec 7 sec 190 8 421 927 421 928 ---- ----M 14 x 15 MIN 2 sec 7 sec 2000 1 ---- 421 929 ---- ----

M 14 x 15 MIN 2 sec 7 sec 250 5 ---- 421 072 ---- ----M 14 x 15 MIN 2 sec 7 sec 250 9 421 070 ---- ---- ----

M 14 x 15 MIN 2 sec 7 sec 250 3 ---- 422 525 ---- ----M 14 x 15 MAX 0 sec 7 sec 250 1 421 582 421 993 425 018 425 019M 14 x 15 MIN 0 sec 7 sec 2500 1 422 297 422 298 ---- ----

M 14 x 15 MAX 0 sec 3 sec 250 5 421 569 ---- ---- ----M 14 x 15 MAX 0 sec 7 sec 250 5 ---- 421 568 ---- ----

M 14 x 15 MIN 2 sec 7 sec 250 10 418 154 ---- ---- ----

M 14 x 15 MIN 0 sec 7 sec 550 3 422 506 422 507 ---- ----M 14 x 15 MIN 0 sec 2 sec 550 1 ---- 421 507 ---- ----

M 14 x 15 MAX 0 sec 0 sec 1000 1 ---- ---- 425 300 425 301M 14 x 15 MIN 2 sec 7 sec 300 6 421 601 421 621 ---- ----

M 14 x 15 MIN 0 sec 7 sec 300 6 421 583 ---- ---- ----

M 14 x 15 MIN 2 sec 3 sec 250 1 ---- 422 527 ---- ----() Probe suitable for brake fluid DOT3(1) Cable end without connector(2) Cable w ith 3 pole flat quick-connect terminations 63 in the housing(3) Cable with 3 pole DEUTSCH socket

(4) Cable with 3 pole round G amp H connector(5) Cable with 3 pole Reinshagen connector

(6) Probe with bayonet 16 S with separate cable 421 670 300 mm straight connector

(7) Probe with connector M 27 x 1 with 300 mm cable straight connector 421 642(8) Cable with 3 pole round AMP connector

(9) Cable with 3 flat quick-connect terminations 63 in single housing(10) Cable with 3 pole AMP connector 423 325 and strain relief

(11) Probe 422 524 like the probe 422 225 however with a monitoring of cable defect

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page 9

Environmental protection IP67 DIN 40050 Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Monitoringdelay

Cablelengthin mm

Cableconnec-tion type

Aqueousliquids

Ref No

Oil and fuel

Ref No

Aqueousliquids

Ref No

Oil and fuel

Ref No

M 18 x 15 MIN 2 sec 7 sec 1000 1 ---- 421 591 ---- ----

M 18 x 15 MIN 2 sec 7 sec 400 3 422 515 ---- ---- ----M 18 x 15 MAX 2 sec 7 sec 400 3 422 516 ---- ---- ----

M 18 x 15 MIN 2 sec 7 sec 250 2 422 503 422 504 425 020 425 021M 18 x 15 MAX 0 sec 7 sec 250 1 ---- ---- 425 022 425 023

M 18 x 15 MAX 0 sec 0 sec 1000 1 425 305 425 304 ---- ----

14ldquo NPTF MIN 0 sec 0 sec 250 1 421 566 421 567 ---- ----14ldquo NPTF MAX 0 sec 0 sec 2000 1 ---- ---- 425 030 ----14ldquo NPTF MIN 2 sec 7 sec 250 1 418 153 421 992 425 024 425 02514ldquo NPTF MAX 0 sec 7 sec 250 1 421 999 421 997 425 026 425 02714ldquo NPTF MAX 0 sec 7 sec 250 4 422 505 ---- ---- ----

14ldquo NPTF MIN 2 sec 7 sec 250 1 421 402 ---- ---- ----14ldquo NPTF MIN 2 sec 7 sec 550 3 422 225 422 226 ---- ----

14ldquo NPTF MIN 2 sec 7 sec 550 11 422 524 ---- ---- ----14ldquo NPTF MAX 0 sec 7 sec 550 3 422 521 422 522 425 302 ----

14ldquo NPTF MIN 2 sec 7 sec 300 6 421 605 421 625 ---- ----

14ldquo NPTF MIN 2 sec 7 sec 300 7 421 987 ---- ---- ----14ldquo NPTF MIN 0 sec 7 sec 550 3 ---- ---- ---- 425 303

38NPTF MAX 0 sec 7 sec 1000 1 ---- ---- ---- 425 031

R 38ldquo MAX 0 sec 7 sec 250 1 421 998 ---- ---- ----R 38ldquo MAX 0 sec 7 sec 250 3 422 286 ---- ---- ----

R 38ldquo MAX 0 sec 0 sec 360 3 ---- 421 510 ---- ----G 12 MIN 0 sec 0 sec 250 9 421 515 ---- ---- ----

G 1 MIN 2 sec 7 sec 250 1 425 307 ---- ---- ----Probe with the sensing point at 35 mm from sensor tip

R 38ldquo MAX 0 sec 7 sec 2000 1 422 523 ---- ---- ----G 1ldquo MAX 0 sec 7 sec 250 1 425 306 ---- ---- ----

() Probe suitable for brake fluid DOT3

(1) Cable end without connector(2) Cable with 3 pole flat quick-connect terminations 63 in the housing(3) Cable with 3 pole DEUTSCH socket(4) Cable with 3 pole round G amp H connector(5) Cable with 3 pole Reinshagen connector

(6) Probe with bayonet 16 S with separate cable 421 670 300 mm straight connector(7) Probe with connector M 27 x 1 with 300 mm cable straight connector 421 642

(8) Cable with 3 pole round AMP connector(9) Cable with 3 flat quick-connect terminations 63 in single housing

(10) Cable with 3 pole AMP connector 423 325 and strain relief

(11) Probe 422 524 like the probe 422 225 however with a monitoring of cable defect

Cable automotive cable FLR 3x075 black temp range - 50degC to +150degCTechnical data see page 12 Installation instruction see page 13

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page 10

Probe with connector DIN 72 585Environmental protection 69K DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Monitoringdelay

Aqueousliquids

Ref No

Oil and fuel

Ref No

Aqueousliquids

Ref No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec 420 400 420 431 420 401 420 432M 14 x 15 MIN 0 sec 7 sec ---- 420 446 ---- ----M 14 x 15 MIN 0 sec 2 sec 420 419 420 447 ---- 420 443M 14 x 15 MAX 0 sec 7 sec 420 402 420 433 420 403 420 434M 14 x 15 MAX 0 sec 0 sec ---- ---- 420 413 420 414

M 14 x 15 MIN 2 sec 60 min ---- 420 444 ---- ----

M 14 x 15 MIN 2 sec 60 sec ---- 420 449 ---- ----M 18 x 15 MIN 2 sec 7 sec 420 404 420 435 420 405 420 436

M 18 x 15 MIN 0 sec 7 sec 420 417 ---- ---- ----M 18 x 15 MAX 0 sec 7 sec 420 406 420 437 420 407 420 438

M 18 x 15 MAX 0 sec 0 sec ---- 420 430 ---- ----

R 38ldquo MAX 0 sec 7 sec 420 420 420 421 ---- ----G 38ldquo MAX 0 sec 0 sec ---- ---- ---- 420 448

14ldquo NPTF MIN 2 sec 7 sec 420 408 420 439 420 409 420 44014ldquo NPTF MIN 0 sec 7 sec 420 418 ---- ---- ----14ldquoNPTF MAX 0 sec 7 sec 420 410 420 441 420 411 420 442

14ldquoNPTF MIN 1 sec 17 sec 420 415 ---- ---- ----Probe with the sensing point 43mm from sensor tip

M 14 x 15 MIN 1 sec 17 sec 420 412

Accessories for probes with connector DIN 72585

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page 11

420 700 Straight connector for bayonet 16 S for corrugated tubing NW10

420 701 90deg connector for bayonet 16 S for corrugated tubing NW 10420 702 Connector 90deg for cable

420 703 Straight connector for cable420 704 Cable with connector 421 672 300 mm

420 705 Cable with connector 420 703 300 mm

420 706 Cable with connector 420 702 1000 mm420 707 Cable with connector 420 703 1000 mm

420 708 Cable with connector 420 702 3000 mm

Technical data see page 12 Installation instruction see page 13

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page 12

Probe with connector DIN 43 650

Environmental protection 65 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal output

minus potential

Signal output

plus potentialThread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref NoM 14 x 15 MIN 2 sec 7 sec 420 600 420 620 420 601 420 621

M 14 x 15 MAX 0 sec 7 sec 420 602 420 622 420 603 420 623M 18 x 15 MIN 2 sec 7 sec 420 604 420 624 420 605 420 625M 18 x 15 MAX 0 sec 7 sec 420 606 420 626 420 607 420 62714ldquo NPTF MIN 2 sec 7 sec 420 608 420 628 420 609 420 62914ldquoNPTF MAX 0 sec 7 sec 420 610 420 630 420 611 420 631

R 38ldquo MAX 0 sec 0 sec ---- ---- ---- 420 650

Accessories for probes with connector

421 880 connector M3x35 to DIN 43 650

Technical data see page 12 Installation instruction see page 13

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page 13

Technical data for minimum and maximum probes

Operating voltage 12V-24V (-25+50)

Output current 1 A over the whole operating voltage range

Short-circuit and overload protected overt the entire temperature range

At minus switching probes the minus potential is switched through At plus switching probes the plus potential is switched through

Sensing point 18 mm +- 6 mm

Closed-circuit current consumption approx 6 mA

Voltage spikes 70 V dropping to Un in 270 ns

Medium temperature Water - 30degC to + 110degC

Oil - 30degC to + 125degC

Ambient temperature - 30degC to + 100degC

Storage temperature - 50degC to + 125degC

Response delay see table

Integral control function see table

Shock resistance 50 g half-sine 11 ms

Pressure on sensor up to 25 bar3675 PSI

Reverse polarity protection in-built between plus and minus terminal

Mounting attitude optional

Housing brass CuZn39Pb3

capacitively connected to frame

Weight approx 125 g

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or plus

potential to the minus terminal as otherwise the probes may be destroyed- Plus switching probes Do not connect plus potential to the signal terminal or minus

potential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

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page 14

Installation Instruction for BEDIA Level Monitoring Probes

BEDIA Level Monitoring Probes may be installed in any attitude

Please observe the following instructions when installing the probe

1 To prevent false indication install the probe in a smooth area where it is not affected bysplashing media as may be the case when it is installed in a gear unit or directly in the

motor oil sump

2 To prevent false indication install the sensor at least 15mm from the wall away

Only for water - sensors

3 False indication may also occur if the sensor is mounted from above in a plasticcontainer with the medium carrying no potential In all other mounting attitudes the

housing will be in contact with the medium so as to ensure potential is available

4 Connection Diagram

Minus switching probes Plus switching probes

5 Connection of the cables free wheeling diode

Bayonet 16SThread M27x1

Bayonet 10SL Bayonet DIN 72585Bayonet DIN 43650

Cable

+ A 1 Brown

- B 2 White

S C 3 Green

sensor

wall

gt15mm

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page 15

Probe with bayonet 10 SL to VG 0095342Environmental protection 67 DIN 40050

Probe suitable for aqueous media Connection diagram

Signal outputminus potential

Signal outputplus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref No

M 18 x 15 MIN 1 sec 3 sec 421 903 421 950 421 470 421 471

M 18 x 15 MAX 1 sec 3 sec 421 951 421 952 421 472 421 473M 18 x 15 MIN 2 sec 7 sec ---- 421 984 ---- ----

M 18 x 15 MAX 0 sec 7 sec ---- 421 990 ---- ----

Probe with bayonet 10 SL to VG 0095342

Probe suitable for aqueous media

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Function-control

Integralcontrolfunction

Monitoringdelay

Aqueousliquids

Ref No

Oil and fueRef No

Aqueousliquids

Ref No

Oil and fueRef No

M 18 x 15 MIN 1 sec 3 sec 200 421 906 421 957 421 478 421 479M 18 x 15 MAX 1 sec 3 sec 200 421 958 421 959 421 480 421 481M 18 x 15 MIN 1 sec 3 sec 450 421 960 ---- ---- ----

Accessories for probes with connector Cannon for bajonet 10 SL

421 652 Straight connector for bayonet 10 SL

421 885 Straight connector for bayonet 10 SL421 646 Cable with connector 3 x 1 with license for cut goods

421 653 Cable with connector 421 652 2000 mm

421 657 Cable with connector 421 652 5000 mm421 648 Brazed adapter internal thread M 18 x 15

Technical data see following pages

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page 16

Technical data for minimum and maximum probes

Mechanical dataHousing stainless non-magneticThread M18x15 max tightening torque 30 NmSealing ring (not supplied with the system) 18x22 DIN 7603-CUFitting Cu-Zn alloy material No 20401

Connection see table to VG 0095342Isolation of sensor Tefzel ETFE

Marking function type number manufacturing date voltageMounting attitude optional immersion depth horizontal approx 3 mm plusmn 2 mm

immersion depth vertical approx 20 mm plusmn 6 mmMass approx 200 g Ambient temperature - 30degC to + 125degC

Storage temperature - 55degC to + 125degCMedium temperature - 30degC to + 125degCSinusoidal vibration (peak) 2 - 25 Hz 16mm amplitude

25 - 420 Hz 4 g amplitude

420 - 1330 Hz 5 g amplitude1330 - 2700 Hz 10 g amplitude2700 - 5000 Hz 25 g amplitude

Relative humidity up to 100

Environment Shock (peak)

50 g half-sine 11 ms

EMC IEC 801 (1-4) lt 500 mV rmsdepending on cables

EMC to VG 95373 only with external filterInterference suppression to VDE0871 limit B

Pressure on sensor max 25 bar3675 PSIMedia to be monitored water cooling water seawater oil fuel hydraulic oil

brake fluidDependability The performance is not impaired by small deposits on

the probe

Electric data Protection against reversepolarity

Voltage spikes

between UB and frame

70 V dropping to UN in270

Voltage rating 9 - 36 V Hysteresis of response max plusmn 5 mm aroundthe sensing point

Output open collector switchingminus potential

Response time - bdquolevelacceptableldquo

typically 1 s (05 s to15 s)

Closed-circuit current at24 V

lt 10 mA Response time - bdquolevelunacceptableldquo

Recovery time

typically 3 s (1 s to 4 s)

lt 2 s

Power consumption closed-circuit current plus

switching current

Integral control function see table

Switching capacity max 1 A continuous currentin the voltage range indicated

Terminal connection A = + UB B = - UB C = output signal

Load resistive and inductive Potential of housing

Dielectric strength

physically isolated fromplus UB and minus UB

VDE

0100500 VDC 1 minLoad inductance 500 mH Insulation resistance VDE 0160500 VAC50

Hz 1 minDielectric resistance gt 10 M Ohm

Voltage through lt 0 5 V

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or pluspotential to the minus terminal as otherwise the probes may be destroyed

- Plus switching probes Do not connect plus potential to the signal terminal or minuspotential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

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page 17

Probes operating on the capacitive principle Ex approvedEnvironmental protection 65 DIN 40050

Probe suitable for aqueousmedia

Probe suitable for oil and fuel

Certificate of ConformityEN 50014-1977 + A1 - A5 (VDE 01700171 Part 1187) General requirementsEN 50020-1977 + A1 - A2 (VDE 01700171 Part 7187) intrinsic safety bdquoIldquo

EEx Ia I

Probe for mining applications

Signal outputMinus potential

ThreadMonitoring

displayIntegralcontrolfunction

Monitoringdelay

Voltage (voltDC)

Aqueous liquids

Ref No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec DC 9-13 V 421 934 421 936M 14 x 15 MAX 2 sec 7 sec DC 9-13 V 421 935 421 937M 18 x 15 MIN 2 sec 7 sec DC 9-13 V 421 930 421 932

M 18 x 15 MAX 2 sec 7 sec DC 9-13 V 421 931 421 93314ldquo NPTF MIN 2 sec 7 sec DC 9-13 V 421 938 421 940

14ldquo NPTF MAX 2 sec 7 sec DC 9-13 V 421 939 421 941

UB+ = Brown

Minus = WhiteSignal = Green

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page 18

Technical data for minimum and maximum probes

Operating voltage 9 - 13 V DC

Closed-circuit current consumption approx 6 mA

Sensing point 20 mm plusmn 6 mm from sensor tip

Power output at the signal output open collector Should be limited to max 20 mA

by the user

Storage temperature - 30degC to +125degCOperating temperature - 30degC to +125degC

Fault indicating delay approx 7 sec

Integral control function approx 2 sec

Shock 50 g half-sine 11 ms

Vibration to GL requirements for type certified tests

Admissible pressure on sensor 5 bar735 PSI

Environmental protection IP 65

Protection against reverse polarity in-built between plus and minus terminal

Mounting attitude horizontal preferred

Housing brass CuZn39Pb3

Sensor coating ETFE Tefzelreg

Weight with 10 m cable approx 800 g

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page 19

Certificate of Conformity BVS 94C1001

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page 20

Certificate of Conformity BVS 94C1001

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page 21

Conductivity probeEnvironmental protection 65 DIN 40050

Probe suitable for aqueous media

Conductivity probe with bayonet 16 S

Signal outputMinus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous liquids

Ref No

M 14 x 15 MIN 2 sec 7 sec 422 200

M 14 x 15 MAX 2 sec 7 sec 422 201

14ldquo NPTF MIN 2 sec 7 sec 422 20414ldquo NPTF MAX 2 sec 7 sec 422 205

Accessories for probes with bayonet 16 S

421 672 Straight connector for bayonet 16 S for corrugated tubing NW 10421 673 90deg connector for bayonet 16 S for corrugated tubing NW 10421 772 Straight connector for bayonet 16 S with 56 mm cable sealing421 773 90deg connector for bayonet 16 S with 56 mm cable sealing

421 670 Cable with connector 421 672 300 mm

421 018 Cable with connector 421 772 1015 mm421 586 Cable with connector 421 772 1300 mm

421 668 Cable with connector 421 772 3000 mm421 671 Cable with connector 421 673 300 mm

421 891 Cable with connector 421 773 800 mm

421 585 Cable with connector 421 773 1300 mm

421 669 Cable with connector 421 773 5000 mm

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page 22

Technical Data for minimum and maximum probes

Voltage rating DC 16 - 32 V

Power consumption typically 7 mA

Switching capacity 3 W (resistive load)

Output minus switching

Voltage drop approx 35 V with 3 W lamp load

Load dump protection 70 V 270 ns

Protection from fault conditions to VDE 0939

Lamp test in-built (approx 3 s)

Fault indicating delay approx 7 s

Free-wheeling diode Inductive loads A free wheeling diode eg 1N4007 has to bemounted at the load

Protection against reverse polarity in-built between plus and minus terminalObserve correct connection of plus and signal terminals

Operating temperature - 40degC to + 120degC

Storage temperature - 40degC to + 120degC

Admissible pressure on sensor 2 bar

Max tightening torque on thread 30 Nm

Mounting attitude optional

Housing brass MS CuZnPb3nickel-plated potential-free

Sensor coating Tefzel

983214

ETFE

Sensor brass MS CuZn39Pb3(immersed in the medium)

Weight approx 100 g

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page 23

Level monitoring in the oil sump

Which are the benefits of a level monitoring system in the oil sump over conventional

pressure and temperature sensorsTemperature sensors indicate very slowly When motor oil is lost e g by tubing breakagethe component temperature can no longer be conducted to the sensors

The lower limit value of oil pressure switches or sensors is set low (low oil pressure with themotor running at no load) At rated motor speed and with too little oil in the oil circuit an oil-airmixture may be produced without that a signal is put out The components are no longer

sufficiently cooled and lubricatedIn the two events described above the output signal is available either too late or even not atall so that the motor will be damaged The level monitoring system however indicates even

before the oil level becomes too low i e as soon as the oil level has fallen 10 to 20 mmbelow the minimum marking on the dipstick Oil pressure and oil temperature indication isalways ensured

Functional diagram

Installation instructions

1 Drain the motor oil

2 Secure the adjustable elbow coupling with the tubing and the sensor support at themotor The sensor housing should be adjustable through oblong holes to determine theminimum point

3 Install the ventilation for the crankcase (e g inspection hole cover)

4 Install and connect the sensor

5 Check for correct electrical function The minimum sensor must indicate now

6 Refill the oil up to the minimum marking on the dipstick

7 Move the sensor and support slowly down until the signal is no longer availableTheswitch point of the sensor is now exactly at the minimum oil level of the motor

8 Move the sensor down by another 10 to 20 mm and fix it The signal bdquooil level too lowldquowill now be put out when the level is approx 10 to 20 mm below the minimum markingon the dipstick

Legend Ref Nr

1 Tubing complete with 350 mm pipecoupling

421 660

Tubing complete with 450 mm pipe

coupling

421 661

Tubing complete with 550 mm pipecoupling

421 659

2 Sensor support 454 134

3 PA pipe available in meters 421 662

4 Level monitoring sensor

Oil MIN 9 - 36 V 421 595Oil MAX 9 - 36 V 421 599

5 withoutcable

withcable

Straight connector 421 672 421 67090deg connector 421 673 421 671

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page 24

Accessories

Plug Connection

1 Straight taper M 27 x 1 orstraight taper bayonet 16 S

2 Gripping seal-ring NW 103 Sleeve nut for NH9-1513

A A Tapered rubber ring must

point into the sleeve nutB B Tube polyflex NW 10Part-No 421 642 M 27 x 1

Part-No 421 672 Bayonet 16 S

Plug Connection

1 Taper M 27 x 1 90deg or

2 Tape 90deg bayonet 16 S3 Gripping seal-ring NW 10

A Tapered rubber ring mustpoint into the sleeve nut

B Tube polyflex NW 10

Part-No 421 643 M 27 x 1Part-No 421 673 Bayonet 16 S

Screw-in Adapter

Outside M 22 x 15Inside M 14 x 15

Part-No 421 640

Braze-in Adapter

Inside 14ldquo NPFTPart-No 421 641

Inside M 14 x 15Part-No 421 644

Cable and Plug

Connection for Probes Approved by Classifica-tion Societies

A Cablem Part-No 421 646

B Plug connectionPart-No 421 645

Plug connection fittedwith 2 m cablePart-No 421 647

Inside M 18 x 15

Part-No 421 648

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page 25

Control and Power Supply Unit 110220 V AC 1224 V DC Order No 421 650

Up to three probes can

be fed from this powersupply unit A relay 3 Amax with one normally

open and one normallyclosed contact is fittedwhich can be used for

additional control tasks A power supply unit isavailable for connection

to 220 V

The voltage for the

relay contacts must notbe taken from thepower supply unit

Housing plastic with control lamps MIN + MAX 110 x 75 x 65 _________________________________________________________________________Control Unit Best-Nr 421 651

for automatic filling and emptying of liquids This unit is designed to control two bdquominimumldquoprobes Probe 2 monitors the maximum liquid level probe 1 the minimum level An outputrelay with a change-over contact is switched automatically for external control tasks

Relays 1 and 2 are switched to conduct when the liquids falls below minimum level Whenthe liquid level reaches maximum relay circuits 1 and 2 are automatically interrupted

LED-display

bull no display liquid level above

bull maximum LED bdquomaximumldquo lights liquid Level is between maximum and minimum andis falling

bull Both LEDrsquos light liquid level is below minimum or is between minimum and maximumand is rising Contacts r1 and r2 are closed

Two bdquominimumldquo minus switching probes with built-in control function are used for this

control The self-control is only visible when both probes are immersed in liquid The signalappears for about 2 seconds when the power supply is switched onFor this period the output (contact r1 and r2) is conducting The voltage for the relay contacts

must not be taken from the power supply unit

Technical Data for Control Unit

Operating 110220 V AC or 1224 V DC Mounting position variable

Relay relay contact t 3 Amax

Temperature - 30 degC to + 75 degC

Protective system IP 54

Control Unit for filling or emptying

Housing plastic with control lamp 110 x 75 x 65 Part No 421 651

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page 26

Probes operating on the capacitive principle

This probe is self-adjustable and can be used for liquids including high viscosity media and

powders

Short description

This BEDIA-Level Sensor is suitable for liquids including high viscosity media and powdersIt operates on the principle of electrical capacitance changes arising when an electrodesurrounded by air is immersed in a media This capacitance change causes an electric

circuit to oscillate thus switching the output transistor off The use of latest state-of-the-arthybrid technology allows the probe and the electronic circuitry to be enclosed in a singlesealed unit

ApplicationThe BEDIA-Level Sensor with itrsquos large temperature range and wide sensitivity adjusting

range is suitable for a wide spread of applications process control petrochemical industrytank level monitoring bottle and crate washing systems in breweries etc

Operating modes

Minimum switching Normally the sensing probe is immersed and the green LED indicates

As the level drops below the probe the green LED extinguishes

Maximum switching Normally the sensing probe is not immersed and the green LED

indicates As the level rises above the probe the green LED extinguishes

Diagram of working method

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page 27

Technical data

Circuit voltage 9 - 36 V DC Short circuit and overload

protectedPower consumption normal operation typ17 mA

fault operation typ10 mATime-delay typ01 sec

OutputTransistor plus switching 300 mA (500 mA short-time) short-circuit and overload proof with integral suppression diode

Terminal

configuration

max 1 mm2 screw terminals (AWG 17) Operating

temperature range

- 20degC to + 130degC

- 20degC to + 85degCMaterial - probe envelope PA 12-Gf

(polyamide with glass fibre)- fitting V2A (DIN 14305AISI 303)

- housing cover PA6-3-T (trogamide -transparent)

- O-ring FKM (viton)

Cable length max 300 m

Mounting plane horizontal (by preference Cable gland PG 7Max switchingpoint hysteresis

sensor diameter Mass ca 250 g

Cable automotive cable FLR 3 x 075 black Temp range -50degC to + 150degCBEDIA-part-no for cut goods 422 210

Dimensional diagram

A B BEDIA part no

G 34A 16mm 422 900

frac34ldquo NPT 21mm 422 901

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page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

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page 3

GENERAL DESCRIPTION

Level Monitoring Probe

BEDIA probes are designed to monitor the level of water oil and other liquids with similarthermal conductivities They are used in engines commercial vehicles boats generators

compressors etc to monitor the coolant oil and fuel levels In boats they are also used tomonitor the supply and sewage tanks as well as bilge waterBEDIA probes are very reliable and are easy to use in automatic filling systems e g motor

oil supply and fuel tanks etc

The BEDIA probes offer the benefit of sensing critical operating conditions at a much earlier

stage than the pressure-operated switches or thermal detectors used today for monitoringengines Thermal detectors often respond too late because the medium being monitored isno longer present and the temperature rise is not transmitted to the sensor Pressure-

operated switches will indicate only when there is hardly any oil left i e too late for theengineThe BEDIA Level Monitoring Probe however will respond before the oil level is low enough

to damage the engine

A distinct advantage of the BEDIA level monitoring probes over floatswitches is their

compact design and high resistance vibration As they do not contain any moving parts theirperformance cannot be impaired by dirt or metal particles in suspension in the fluid TheBEDIA probes also do not pass current through the medium The sensor being isolated

eliminates the possibility of electrolysis in the system

Technical description

The BEDIA level monitoring probes operate on the principle of electrical capacitancechanges arising when an electrode surrounded by air is immersed in liquid This capacitance

change causes an electric circuit to oscillate switching the output transistor off The use oflatest state-of-the-art hybrid technology allows the sensor and the electronic circuitry to beenclosed in a single sealed unit

The output signal will be completed as soon as the sensor emerges from the medium whenminimum level is monitored or as soon as it is immersed in the medium when maximumlevel is monitored A load of 1 A (with 12 V = 12 W with 24 V = 24W) may be connected to

this pole To connect larger electrical loads it is necessary to interconnect a relay A free-wheeling diode has to be built at the loads to protect it from overvoltage as caused byinductive loads (see technical data) The output signal is delayed in order to prevent false

indication when the liquid is temporarily above or below the set limit

Integral control function

The BEDIA probes have an integral control function When the electrics are switched onthere is an output signal for 2 seconds showing that the probe and circuit are working

properly If there is no output signal the probe and circuit should be examined This feature

enables the probes to be checked remotely for correct operation andor wire break-ageIn complex systems such as in boats it is often difficult to physically check conventional

probes floatswitches and their wiring

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page 4

Probe with threaded connector M 27 x 1 Environmental protection IP67 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal output

minus potentialThread Monitoring

display

Integral

controlfunction

Response

delay

Type Aqueous liquids

Ref No

Oil and

fuelRef No

M 14 x 15 MIN 2 sec 7 sec 421 603 421 623

M 14 x 15 MIN 2 sec 7 sec 1 ---- 422 293

M 14 x 15 MIN 0 sec 7 sec ---- 421 634

M 14 x 15 MIN 2 sec 20 sec 421 617 ----M 14 x 15 MAX 0 sec 7 sec 2 ---- 422 299M 14 x 15 MAX 0 sec 7 sec 421 611 421 631M 18 x 15 MIN 2 sec 7 sec 4 420 460 420 461

14ldquo NPTF MIN 2 sec 7 sec 421 607 421 62714ldquo NPTF MIN 2 sec 7 sec 3 421 592

(1) Probe with the sensing point at 15 mm from sensor tip Housing nikeled(2) Probe equipped with overvoltage protection diode

(3) Probe with inbuilt overvoltage protection diode

(4) without approval

Accessories for probes with M 27 x 1 thread

421 642 Straight connector M 27x1 for corrugated tubing NW 10

421 643 90deg connector M 27x1 for corrugated tubing NW 10

421 742 Straight connector M 27x1 with 56 mm cable sealing421 743 90deg connector M 27x1 with 56 mm cable sealing

421 988 Cable with connector 421 742 300 mm421 038 Cable with connector 421 743 300 mm

Technical data see page 12 Installation instruction see page 13

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page 5

Probe with Bayonet connector 16 SEnvironmental protection IP67 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Responsedelay

Aqueousliquids

Ref No

Oil and fuel

Ref No

AqueousliquidsRef No

Oil and fuel

Ref No

M 12 x 1 MIN 2 sec 7 sec 421 404 421 593 ---- ----

M 14 x 15 MIN 2 sec 7 sec 421 575 421 595 425 002 425 003M 14 x 15 MIN 1 sec 17 sec ---- 420 445 ---- ----M 14 x 15 MIN 2 sec 7 sec 421 565 ---- ---- ----M 14 x 15 MAX 0 sec 7 sec 421 579 421 599 425 004 425 005M 14 x 15 MIN 2 sec 2 sec ---- 422 508 ---- ----

M 14 x 15 MAX 0 sec 0 sec ---- 422 511 ---- ----M 14 x 15 MIN 0 sec 0 sec 422 528 ---- ---- ----

M 14 x 15 MAX 2 sec 2 sec ---- 422 509 ---- ----M 14 x 15 MIN 2 sec 15 sec 421 637 ---- ---- ----

M 14 x 15 MIN 1 sec 2 sec 422 502 ---- ---- ----

M 14 x 15 MIN 0 sec 7 sec 421 564 421 590 ---- ----M 14 x 15 MIN 2 sec 0 sec ---- ---- ---- 422 510

M 18 x 15 MIN 2 sec 7 sec 421 570 421 572 425 006 425 007M 18 x 15 MIN 2 sec 7 sec 421 563 ---- ---- ----M 18 x 15 MAX 0 sec 7 sec 421 571 421 573 425 008 425 009

M 18 x 15 MIN 0 sec 7 sec ---- 422 031 ---- ----14ldquoNPTF MIN 2 sec 7 sec 421 577 421 597 425 010 425 011

14ldquoNPTF MIN 1 sec 17 sec 421 401 ---- ---- ----14ldquoNPTF MIN 0 sec 7 sec 421 581 ---- 425 000 ----

14ldquoNPTF MIN 0 sec 20 sec 421 636 ---- ---- ----

14ldquoNPTF MIN 6 sec 15 sec 422 500 ---- ---- ----14ldquoNPTF MAX 0 sec 7 sec 420 993 424 999 425 013 425 012

14ldquoNPTF MIN 0 sec 0 sec ---- 422 529 ---- ----14ldquoNPTF MAX 0 sec 7 sec ---- 424 999 ---- ----

38ldquo NPTF MIN 2 sec 7 sec 420 992 420 994 425 014 425 01538ldquo NPTF MIN 0 sec 7 sec ---- ---- ---- 425 00138ldquoNPTF MAX 0 sec 7 sec ---- ---- ---- 425 029

Probe with the sensing point at 3 to 7 mm from sensor tip M 14 x 15 MIN 1 sec 7 sec 422 295 ---- ---- ----

M 14 x 15 MIN 1 sec 20 sec 422 296 ---- ---- ----

M 14 x 15 MAX 0 sec 7 sec 420 991 ---- ---- ----Probe with the sensing point at 25 mm from sensor tip

M 22 x 15 MIN 1 sec 17 sec 422 501 ---- ---- ----Probe with housing nickeled

M 14 x 15 MIN 2 sec 7 sec 421 513 ---- ---- ----Probe equipped with overvoltage protection diode

Probe equipped with supressor diode

Accessories see following page

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page 6

Accessories for probes with bayonet 16 S

421 672 Straight connector for bayonet 16 S for corrugated tubing NW10

421 673 90deg connector for bayonet 16 S for corrugated tubing NW 10421 772 Straight connector for bayonet 16 S with 56 mm cable sealing

421 773 90deg connector for bayonet 16 S with 56 cable sealing

421 670 Cable with connector 421 672 300 mm421 891 Cable with connector 421 772 1015 mm

421 018 Cable with connector 421 772 1300 mm

421 586 Cable with connector 421 772 3000 mm421 668 Cable with connector 421 673 300 mm421 671 Cable with connector 421 772 800 mm421 585 Cable with connector 421 773 1300 mm421 669 Cable with connector 421 773 5000 mm421 587 Cable with connector 421 773 10000 mm

Technical data see page 12 Installation instruction see page 13

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page 7

Probe with Cannon connector for bayonet 10 SL to VG0095342Environmental protection IP67 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Responsedelay

Aqueousliquids

Ref No

Oil and fuel

Ref No

AqueousliquidsRef No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec 421 403 421 504 421 505 421 506M 14 x 15 MAX 0 sec 0 sec ---- ---- 421 508 ----

M 14 x 15 MAX 0 sec 7 sec ---- ---- ---- 421 516M 18 x 15 MIN 2 sec 7 sec 422 512 422 513 421 500 421 501M 18 x 15 MIN 0 sec 0 sec ---- ---- ---- 421 514

M 18 x 15 MAX 2 sec 7 sec ---- 422 514 ---- ----M 18 x 15 MAX 0 sec 7 sec 421 989 421 990 421 502 421 503

M 18 x 15 MAX 0 sec 0 sec --- ---- ---- 421 509

14ldquo NPTF MIN 2 sec 7 sec 421 907 421 908 421 498 421 49914ldquo NPTF MAX 0 sec 7 sec ---- 421 909 ---- ----

12ldquo UNF MIN 2 sec 7 sec ---- 421 584 ---- ----

Accessories for probes with Cannon connector for bayonet 10 SL

421 652 Straight connector for bayonet 10 SL421 885 Straight connector for bayonet 10 SL 90deg

421 646 Cable with connector 3 x 1 with license for cut goods421 653 Cable with connector 421 652 2000 mm421 657 Cable with connector 421 652 5000 mm

421 648 Brazed adapter internal thread M 18 x 15

Technical data see page 12 Installation instruction see page 13

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page 8

Probes operating on the capacitive principleEnvironmental protection IP67 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Cable colour brown = +white = -

green = S

Cable colour brown = +white = -

green = S

Environmental protection IP67 DIN 40050 Signal output

minus potential

Signal output

plus potentialThread Monitoring

display

Integral

controlfunction

Monitoring

delay

Cable

lengthin mm

Cable

connec-tion type

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref NoM 12 x 1 MIN 0 sec 7 sec 1000 1 421 580 ---- ---- ----

M 14 x 15 MIN 2 sec 7 sec 190 1 418 152 421 991 425 016 425 017

M 14 x 15 MIN 2 sec 7 sec 190 8 421 927 421 928 ---- ----M 14 x 15 MIN 2 sec 7 sec 2000 1 ---- 421 929 ---- ----

M 14 x 15 MIN 2 sec 7 sec 250 5 ---- 421 072 ---- ----M 14 x 15 MIN 2 sec 7 sec 250 9 421 070 ---- ---- ----

M 14 x 15 MIN 2 sec 7 sec 250 3 ---- 422 525 ---- ----M 14 x 15 MAX 0 sec 7 sec 250 1 421 582 421 993 425 018 425 019M 14 x 15 MIN 0 sec 7 sec 2500 1 422 297 422 298 ---- ----

M 14 x 15 MAX 0 sec 3 sec 250 5 421 569 ---- ---- ----M 14 x 15 MAX 0 sec 7 sec 250 5 ---- 421 568 ---- ----

M 14 x 15 MIN 2 sec 7 sec 250 10 418 154 ---- ---- ----

M 14 x 15 MIN 0 sec 7 sec 550 3 422 506 422 507 ---- ----M 14 x 15 MIN 0 sec 2 sec 550 1 ---- 421 507 ---- ----

M 14 x 15 MAX 0 sec 0 sec 1000 1 ---- ---- 425 300 425 301M 14 x 15 MIN 2 sec 7 sec 300 6 421 601 421 621 ---- ----

M 14 x 15 MIN 0 sec 7 sec 300 6 421 583 ---- ---- ----

M 14 x 15 MIN 2 sec 3 sec 250 1 ---- 422 527 ---- ----() Probe suitable for brake fluid DOT3(1) Cable end without connector(2) Cable w ith 3 pole flat quick-connect terminations 63 in the housing(3) Cable with 3 pole DEUTSCH socket

(4) Cable with 3 pole round G amp H connector(5) Cable with 3 pole Reinshagen connector

(6) Probe with bayonet 16 S with separate cable 421 670 300 mm straight connector

(7) Probe with connector M 27 x 1 with 300 mm cable straight connector 421 642(8) Cable with 3 pole round AMP connector

(9) Cable with 3 flat quick-connect terminations 63 in single housing(10) Cable with 3 pole AMP connector 423 325 and strain relief

(11) Probe 422 524 like the probe 422 225 however with a monitoring of cable defect

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page 9

Environmental protection IP67 DIN 40050 Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Monitoringdelay

Cablelengthin mm

Cableconnec-tion type

Aqueousliquids

Ref No

Oil and fuel

Ref No

Aqueousliquids

Ref No

Oil and fuel

Ref No

M 18 x 15 MIN 2 sec 7 sec 1000 1 ---- 421 591 ---- ----

M 18 x 15 MIN 2 sec 7 sec 400 3 422 515 ---- ---- ----M 18 x 15 MAX 2 sec 7 sec 400 3 422 516 ---- ---- ----

M 18 x 15 MIN 2 sec 7 sec 250 2 422 503 422 504 425 020 425 021M 18 x 15 MAX 0 sec 7 sec 250 1 ---- ---- 425 022 425 023

M 18 x 15 MAX 0 sec 0 sec 1000 1 425 305 425 304 ---- ----

14ldquo NPTF MIN 0 sec 0 sec 250 1 421 566 421 567 ---- ----14ldquo NPTF MAX 0 sec 0 sec 2000 1 ---- ---- 425 030 ----14ldquo NPTF MIN 2 sec 7 sec 250 1 418 153 421 992 425 024 425 02514ldquo NPTF MAX 0 sec 7 sec 250 1 421 999 421 997 425 026 425 02714ldquo NPTF MAX 0 sec 7 sec 250 4 422 505 ---- ---- ----

14ldquo NPTF MIN 2 sec 7 sec 250 1 421 402 ---- ---- ----14ldquo NPTF MIN 2 sec 7 sec 550 3 422 225 422 226 ---- ----

14ldquo NPTF MIN 2 sec 7 sec 550 11 422 524 ---- ---- ----14ldquo NPTF MAX 0 sec 7 sec 550 3 422 521 422 522 425 302 ----

14ldquo NPTF MIN 2 sec 7 sec 300 6 421 605 421 625 ---- ----

14ldquo NPTF MIN 2 sec 7 sec 300 7 421 987 ---- ---- ----14ldquo NPTF MIN 0 sec 7 sec 550 3 ---- ---- ---- 425 303

38NPTF MAX 0 sec 7 sec 1000 1 ---- ---- ---- 425 031

R 38ldquo MAX 0 sec 7 sec 250 1 421 998 ---- ---- ----R 38ldquo MAX 0 sec 7 sec 250 3 422 286 ---- ---- ----

R 38ldquo MAX 0 sec 0 sec 360 3 ---- 421 510 ---- ----G 12 MIN 0 sec 0 sec 250 9 421 515 ---- ---- ----

G 1 MIN 2 sec 7 sec 250 1 425 307 ---- ---- ----Probe with the sensing point at 35 mm from sensor tip

R 38ldquo MAX 0 sec 7 sec 2000 1 422 523 ---- ---- ----G 1ldquo MAX 0 sec 7 sec 250 1 425 306 ---- ---- ----

() Probe suitable for brake fluid DOT3

(1) Cable end without connector(2) Cable with 3 pole flat quick-connect terminations 63 in the housing(3) Cable with 3 pole DEUTSCH socket(4) Cable with 3 pole round G amp H connector(5) Cable with 3 pole Reinshagen connector

(6) Probe with bayonet 16 S with separate cable 421 670 300 mm straight connector(7) Probe with connector M 27 x 1 with 300 mm cable straight connector 421 642

(8) Cable with 3 pole round AMP connector(9) Cable with 3 flat quick-connect terminations 63 in single housing

(10) Cable with 3 pole AMP connector 423 325 and strain relief

(11) Probe 422 524 like the probe 422 225 however with a monitoring of cable defect

Cable automotive cable FLR 3x075 black temp range - 50degC to +150degCTechnical data see page 12 Installation instruction see page 13

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page 10

Probe with connector DIN 72 585Environmental protection 69K DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Monitoringdelay

Aqueousliquids

Ref No

Oil and fuel

Ref No

Aqueousliquids

Ref No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec 420 400 420 431 420 401 420 432M 14 x 15 MIN 0 sec 7 sec ---- 420 446 ---- ----M 14 x 15 MIN 0 sec 2 sec 420 419 420 447 ---- 420 443M 14 x 15 MAX 0 sec 7 sec 420 402 420 433 420 403 420 434M 14 x 15 MAX 0 sec 0 sec ---- ---- 420 413 420 414

M 14 x 15 MIN 2 sec 60 min ---- 420 444 ---- ----

M 14 x 15 MIN 2 sec 60 sec ---- 420 449 ---- ----M 18 x 15 MIN 2 sec 7 sec 420 404 420 435 420 405 420 436

M 18 x 15 MIN 0 sec 7 sec 420 417 ---- ---- ----M 18 x 15 MAX 0 sec 7 sec 420 406 420 437 420 407 420 438

M 18 x 15 MAX 0 sec 0 sec ---- 420 430 ---- ----

R 38ldquo MAX 0 sec 7 sec 420 420 420 421 ---- ----G 38ldquo MAX 0 sec 0 sec ---- ---- ---- 420 448

14ldquo NPTF MIN 2 sec 7 sec 420 408 420 439 420 409 420 44014ldquo NPTF MIN 0 sec 7 sec 420 418 ---- ---- ----14ldquoNPTF MAX 0 sec 7 sec 420 410 420 441 420 411 420 442

14ldquoNPTF MIN 1 sec 17 sec 420 415 ---- ---- ----Probe with the sensing point 43mm from sensor tip

M 14 x 15 MIN 1 sec 17 sec 420 412

Accessories for probes with connector DIN 72585

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page 11

420 700 Straight connector for bayonet 16 S for corrugated tubing NW10

420 701 90deg connector for bayonet 16 S for corrugated tubing NW 10420 702 Connector 90deg for cable

420 703 Straight connector for cable420 704 Cable with connector 421 672 300 mm

420 705 Cable with connector 420 703 300 mm

420 706 Cable with connector 420 702 1000 mm420 707 Cable with connector 420 703 1000 mm

420 708 Cable with connector 420 702 3000 mm

Technical data see page 12 Installation instruction see page 13

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page 12

Probe with connector DIN 43 650

Environmental protection 65 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal output

minus potential

Signal output

plus potentialThread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref NoM 14 x 15 MIN 2 sec 7 sec 420 600 420 620 420 601 420 621

M 14 x 15 MAX 0 sec 7 sec 420 602 420 622 420 603 420 623M 18 x 15 MIN 2 sec 7 sec 420 604 420 624 420 605 420 625M 18 x 15 MAX 0 sec 7 sec 420 606 420 626 420 607 420 62714ldquo NPTF MIN 2 sec 7 sec 420 608 420 628 420 609 420 62914ldquoNPTF MAX 0 sec 7 sec 420 610 420 630 420 611 420 631

R 38ldquo MAX 0 sec 0 sec ---- ---- ---- 420 650

Accessories for probes with connector

421 880 connector M3x35 to DIN 43 650

Technical data see page 12 Installation instruction see page 13

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page 13

Technical data for minimum and maximum probes

Operating voltage 12V-24V (-25+50)

Output current 1 A over the whole operating voltage range

Short-circuit and overload protected overt the entire temperature range

At minus switching probes the minus potential is switched through At plus switching probes the plus potential is switched through

Sensing point 18 mm +- 6 mm

Closed-circuit current consumption approx 6 mA

Voltage spikes 70 V dropping to Un in 270 ns

Medium temperature Water - 30degC to + 110degC

Oil - 30degC to + 125degC

Ambient temperature - 30degC to + 100degC

Storage temperature - 50degC to + 125degC

Response delay see table

Integral control function see table

Shock resistance 50 g half-sine 11 ms

Pressure on sensor up to 25 bar3675 PSI

Reverse polarity protection in-built between plus and minus terminal

Mounting attitude optional

Housing brass CuZn39Pb3

capacitively connected to frame

Weight approx 125 g

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or plus

potential to the minus terminal as otherwise the probes may be destroyed- Plus switching probes Do not connect plus potential to the signal terminal or minus

potential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

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page 14

Installation Instruction for BEDIA Level Monitoring Probes

BEDIA Level Monitoring Probes may be installed in any attitude

Please observe the following instructions when installing the probe

1 To prevent false indication install the probe in a smooth area where it is not affected bysplashing media as may be the case when it is installed in a gear unit or directly in the

motor oil sump

2 To prevent false indication install the sensor at least 15mm from the wall away

Only for water - sensors

3 False indication may also occur if the sensor is mounted from above in a plasticcontainer with the medium carrying no potential In all other mounting attitudes the

housing will be in contact with the medium so as to ensure potential is available

4 Connection Diagram

Minus switching probes Plus switching probes

5 Connection of the cables free wheeling diode

Bayonet 16SThread M27x1

Bayonet 10SL Bayonet DIN 72585Bayonet DIN 43650

Cable

+ A 1 Brown

- B 2 White

S C 3 Green

sensor

wall

gt15mm

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page 15

Probe with bayonet 10 SL to VG 0095342Environmental protection 67 DIN 40050

Probe suitable for aqueous media Connection diagram

Signal outputminus potential

Signal outputplus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref No

M 18 x 15 MIN 1 sec 3 sec 421 903 421 950 421 470 421 471

M 18 x 15 MAX 1 sec 3 sec 421 951 421 952 421 472 421 473M 18 x 15 MIN 2 sec 7 sec ---- 421 984 ---- ----

M 18 x 15 MAX 0 sec 7 sec ---- 421 990 ---- ----

Probe with bayonet 10 SL to VG 0095342

Probe suitable for aqueous media

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Function-control

Integralcontrolfunction

Monitoringdelay

Aqueousliquids

Ref No

Oil and fueRef No

Aqueousliquids

Ref No

Oil and fueRef No

M 18 x 15 MIN 1 sec 3 sec 200 421 906 421 957 421 478 421 479M 18 x 15 MAX 1 sec 3 sec 200 421 958 421 959 421 480 421 481M 18 x 15 MIN 1 sec 3 sec 450 421 960 ---- ---- ----

Accessories for probes with connector Cannon for bajonet 10 SL

421 652 Straight connector for bayonet 10 SL

421 885 Straight connector for bayonet 10 SL421 646 Cable with connector 3 x 1 with license for cut goods

421 653 Cable with connector 421 652 2000 mm

421 657 Cable with connector 421 652 5000 mm421 648 Brazed adapter internal thread M 18 x 15

Technical data see following pages

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page 16

Technical data for minimum and maximum probes

Mechanical dataHousing stainless non-magneticThread M18x15 max tightening torque 30 NmSealing ring (not supplied with the system) 18x22 DIN 7603-CUFitting Cu-Zn alloy material No 20401

Connection see table to VG 0095342Isolation of sensor Tefzel ETFE

Marking function type number manufacturing date voltageMounting attitude optional immersion depth horizontal approx 3 mm plusmn 2 mm

immersion depth vertical approx 20 mm plusmn 6 mmMass approx 200 g Ambient temperature - 30degC to + 125degC

Storage temperature - 55degC to + 125degCMedium temperature - 30degC to + 125degCSinusoidal vibration (peak) 2 - 25 Hz 16mm amplitude

25 - 420 Hz 4 g amplitude

420 - 1330 Hz 5 g amplitude1330 - 2700 Hz 10 g amplitude2700 - 5000 Hz 25 g amplitude

Relative humidity up to 100

Environment Shock (peak)

50 g half-sine 11 ms

EMC IEC 801 (1-4) lt 500 mV rmsdepending on cables

EMC to VG 95373 only with external filterInterference suppression to VDE0871 limit B

Pressure on sensor max 25 bar3675 PSIMedia to be monitored water cooling water seawater oil fuel hydraulic oil

brake fluidDependability The performance is not impaired by small deposits on

the probe

Electric data Protection against reversepolarity

Voltage spikes

between UB and frame

70 V dropping to UN in270

Voltage rating 9 - 36 V Hysteresis of response max plusmn 5 mm aroundthe sensing point

Output open collector switchingminus potential

Response time - bdquolevelacceptableldquo

typically 1 s (05 s to15 s)

Closed-circuit current at24 V

lt 10 mA Response time - bdquolevelunacceptableldquo

Recovery time

typically 3 s (1 s to 4 s)

lt 2 s

Power consumption closed-circuit current plus

switching current

Integral control function see table

Switching capacity max 1 A continuous currentin the voltage range indicated

Terminal connection A = + UB B = - UB C = output signal

Load resistive and inductive Potential of housing

Dielectric strength

physically isolated fromplus UB and minus UB

VDE

0100500 VDC 1 minLoad inductance 500 mH Insulation resistance VDE 0160500 VAC50

Hz 1 minDielectric resistance gt 10 M Ohm

Voltage through lt 0 5 V

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or pluspotential to the minus terminal as otherwise the probes may be destroyed

- Plus switching probes Do not connect plus potential to the signal terminal or minuspotential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

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page 17

Probes operating on the capacitive principle Ex approvedEnvironmental protection 65 DIN 40050

Probe suitable for aqueousmedia

Probe suitable for oil and fuel

Certificate of ConformityEN 50014-1977 + A1 - A5 (VDE 01700171 Part 1187) General requirementsEN 50020-1977 + A1 - A2 (VDE 01700171 Part 7187) intrinsic safety bdquoIldquo

EEx Ia I

Probe for mining applications

Signal outputMinus potential

ThreadMonitoring

displayIntegralcontrolfunction

Monitoringdelay

Voltage (voltDC)

Aqueous liquids

Ref No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec DC 9-13 V 421 934 421 936M 14 x 15 MAX 2 sec 7 sec DC 9-13 V 421 935 421 937M 18 x 15 MIN 2 sec 7 sec DC 9-13 V 421 930 421 932

M 18 x 15 MAX 2 sec 7 sec DC 9-13 V 421 931 421 93314ldquo NPTF MIN 2 sec 7 sec DC 9-13 V 421 938 421 940

14ldquo NPTF MAX 2 sec 7 sec DC 9-13 V 421 939 421 941

UB+ = Brown

Minus = WhiteSignal = Green

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page 18

Technical data for minimum and maximum probes

Operating voltage 9 - 13 V DC

Closed-circuit current consumption approx 6 mA

Sensing point 20 mm plusmn 6 mm from sensor tip

Power output at the signal output open collector Should be limited to max 20 mA

by the user

Storage temperature - 30degC to +125degCOperating temperature - 30degC to +125degC

Fault indicating delay approx 7 sec

Integral control function approx 2 sec

Shock 50 g half-sine 11 ms

Vibration to GL requirements for type certified tests

Admissible pressure on sensor 5 bar735 PSI

Environmental protection IP 65

Protection against reverse polarity in-built between plus and minus terminal

Mounting attitude horizontal preferred

Housing brass CuZn39Pb3

Sensor coating ETFE Tefzelreg

Weight with 10 m cable approx 800 g

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page 19

Certificate of Conformity BVS 94C1001

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page 20

Certificate of Conformity BVS 94C1001

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page 21

Conductivity probeEnvironmental protection 65 DIN 40050

Probe suitable for aqueous media

Conductivity probe with bayonet 16 S

Signal outputMinus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous liquids

Ref No

M 14 x 15 MIN 2 sec 7 sec 422 200

M 14 x 15 MAX 2 sec 7 sec 422 201

14ldquo NPTF MIN 2 sec 7 sec 422 20414ldquo NPTF MAX 2 sec 7 sec 422 205

Accessories for probes with bayonet 16 S

421 672 Straight connector for bayonet 16 S for corrugated tubing NW 10421 673 90deg connector for bayonet 16 S for corrugated tubing NW 10421 772 Straight connector for bayonet 16 S with 56 mm cable sealing421 773 90deg connector for bayonet 16 S with 56 mm cable sealing

421 670 Cable with connector 421 672 300 mm

421 018 Cable with connector 421 772 1015 mm421 586 Cable with connector 421 772 1300 mm

421 668 Cable with connector 421 772 3000 mm421 671 Cable with connector 421 673 300 mm

421 891 Cable with connector 421 773 800 mm

421 585 Cable with connector 421 773 1300 mm

421 669 Cable with connector 421 773 5000 mm

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page 22

Technical Data for minimum and maximum probes

Voltage rating DC 16 - 32 V

Power consumption typically 7 mA

Switching capacity 3 W (resistive load)

Output minus switching

Voltage drop approx 35 V with 3 W lamp load

Load dump protection 70 V 270 ns

Protection from fault conditions to VDE 0939

Lamp test in-built (approx 3 s)

Fault indicating delay approx 7 s

Free-wheeling diode Inductive loads A free wheeling diode eg 1N4007 has to bemounted at the load

Protection against reverse polarity in-built between plus and minus terminalObserve correct connection of plus and signal terminals

Operating temperature - 40degC to + 120degC

Storage temperature - 40degC to + 120degC

Admissible pressure on sensor 2 bar

Max tightening torque on thread 30 Nm

Mounting attitude optional

Housing brass MS CuZnPb3nickel-plated potential-free

Sensor coating Tefzel

983214

ETFE

Sensor brass MS CuZn39Pb3(immersed in the medium)

Weight approx 100 g

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page 23

Level monitoring in the oil sump

Which are the benefits of a level monitoring system in the oil sump over conventional

pressure and temperature sensorsTemperature sensors indicate very slowly When motor oil is lost e g by tubing breakagethe component temperature can no longer be conducted to the sensors

The lower limit value of oil pressure switches or sensors is set low (low oil pressure with themotor running at no load) At rated motor speed and with too little oil in the oil circuit an oil-airmixture may be produced without that a signal is put out The components are no longer

sufficiently cooled and lubricatedIn the two events described above the output signal is available either too late or even not atall so that the motor will be damaged The level monitoring system however indicates even

before the oil level becomes too low i e as soon as the oil level has fallen 10 to 20 mmbelow the minimum marking on the dipstick Oil pressure and oil temperature indication isalways ensured

Functional diagram

Installation instructions

1 Drain the motor oil

2 Secure the adjustable elbow coupling with the tubing and the sensor support at themotor The sensor housing should be adjustable through oblong holes to determine theminimum point

3 Install the ventilation for the crankcase (e g inspection hole cover)

4 Install and connect the sensor

5 Check for correct electrical function The minimum sensor must indicate now

6 Refill the oil up to the minimum marking on the dipstick

7 Move the sensor and support slowly down until the signal is no longer availableTheswitch point of the sensor is now exactly at the minimum oil level of the motor

8 Move the sensor down by another 10 to 20 mm and fix it The signal bdquooil level too lowldquowill now be put out when the level is approx 10 to 20 mm below the minimum markingon the dipstick

Legend Ref Nr

1 Tubing complete with 350 mm pipecoupling

421 660

Tubing complete with 450 mm pipe

coupling

421 661

Tubing complete with 550 mm pipecoupling

421 659

2 Sensor support 454 134

3 PA pipe available in meters 421 662

4 Level monitoring sensor

Oil MIN 9 - 36 V 421 595Oil MAX 9 - 36 V 421 599

5 withoutcable

withcable

Straight connector 421 672 421 67090deg connector 421 673 421 671

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page 24

Accessories

Plug Connection

1 Straight taper M 27 x 1 orstraight taper bayonet 16 S

2 Gripping seal-ring NW 103 Sleeve nut for NH9-1513

A A Tapered rubber ring must

point into the sleeve nutB B Tube polyflex NW 10Part-No 421 642 M 27 x 1

Part-No 421 672 Bayonet 16 S

Plug Connection

1 Taper M 27 x 1 90deg or

2 Tape 90deg bayonet 16 S3 Gripping seal-ring NW 10

A Tapered rubber ring mustpoint into the sleeve nut

B Tube polyflex NW 10

Part-No 421 643 M 27 x 1Part-No 421 673 Bayonet 16 S

Screw-in Adapter

Outside M 22 x 15Inside M 14 x 15

Part-No 421 640

Braze-in Adapter

Inside 14ldquo NPFTPart-No 421 641

Inside M 14 x 15Part-No 421 644

Cable and Plug

Connection for Probes Approved by Classifica-tion Societies

A Cablem Part-No 421 646

B Plug connectionPart-No 421 645

Plug connection fittedwith 2 m cablePart-No 421 647

Inside M 18 x 15

Part-No 421 648

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page 25

Control and Power Supply Unit 110220 V AC 1224 V DC Order No 421 650

Up to three probes can

be fed from this powersupply unit A relay 3 Amax with one normally

open and one normallyclosed contact is fittedwhich can be used for

additional control tasks A power supply unit isavailable for connection

to 220 V

The voltage for the

relay contacts must notbe taken from thepower supply unit

Housing plastic with control lamps MIN + MAX 110 x 75 x 65 _________________________________________________________________________Control Unit Best-Nr 421 651

for automatic filling and emptying of liquids This unit is designed to control two bdquominimumldquoprobes Probe 2 monitors the maximum liquid level probe 1 the minimum level An outputrelay with a change-over contact is switched automatically for external control tasks

Relays 1 and 2 are switched to conduct when the liquids falls below minimum level Whenthe liquid level reaches maximum relay circuits 1 and 2 are automatically interrupted

LED-display

bull no display liquid level above

bull maximum LED bdquomaximumldquo lights liquid Level is between maximum and minimum andis falling

bull Both LEDrsquos light liquid level is below minimum or is between minimum and maximumand is rising Contacts r1 and r2 are closed

Two bdquominimumldquo minus switching probes with built-in control function are used for this

control The self-control is only visible when both probes are immersed in liquid The signalappears for about 2 seconds when the power supply is switched onFor this period the output (contact r1 and r2) is conducting The voltage for the relay contacts

must not be taken from the power supply unit

Technical Data for Control Unit

Operating 110220 V AC or 1224 V DC Mounting position variable

Relay relay contact t 3 Amax

Temperature - 30 degC to + 75 degC

Protective system IP 54

Control Unit for filling or emptying

Housing plastic with control lamp 110 x 75 x 65 Part No 421 651

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page 26

Probes operating on the capacitive principle

This probe is self-adjustable and can be used for liquids including high viscosity media and

powders

Short description

This BEDIA-Level Sensor is suitable for liquids including high viscosity media and powdersIt operates on the principle of electrical capacitance changes arising when an electrodesurrounded by air is immersed in a media This capacitance change causes an electric

circuit to oscillate thus switching the output transistor off The use of latest state-of-the-arthybrid technology allows the probe and the electronic circuitry to be enclosed in a singlesealed unit

ApplicationThe BEDIA-Level Sensor with itrsquos large temperature range and wide sensitivity adjusting

range is suitable for a wide spread of applications process control petrochemical industrytank level monitoring bottle and crate washing systems in breweries etc

Operating modes

Minimum switching Normally the sensing probe is immersed and the green LED indicates

As the level drops below the probe the green LED extinguishes

Maximum switching Normally the sensing probe is not immersed and the green LED

indicates As the level rises above the probe the green LED extinguishes

Diagram of working method

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page 27

Technical data

Circuit voltage 9 - 36 V DC Short circuit and overload

protectedPower consumption normal operation typ17 mA

fault operation typ10 mATime-delay typ01 sec

OutputTransistor plus switching 300 mA (500 mA short-time) short-circuit and overload proof with integral suppression diode

Terminal

configuration

max 1 mm2 screw terminals (AWG 17) Operating

temperature range

- 20degC to + 130degC

- 20degC to + 85degCMaterial - probe envelope PA 12-Gf

(polyamide with glass fibre)- fitting V2A (DIN 14305AISI 303)

- housing cover PA6-3-T (trogamide -transparent)

- O-ring FKM (viton)

Cable length max 300 m

Mounting plane horizontal (by preference Cable gland PG 7Max switchingpoint hysteresis

sensor diameter Mass ca 250 g

Cable automotive cable FLR 3 x 075 black Temp range -50degC to + 150degCBEDIA-part-no for cut goods 422 210

Dimensional diagram

A B BEDIA part no

G 34A 16mm 422 900

frac34ldquo NPT 21mm 422 901

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page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

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page 4

Probe with threaded connector M 27 x 1 Environmental protection IP67 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal output

minus potentialThread Monitoring

display

Integral

controlfunction

Response

delay

Type Aqueous liquids

Ref No

Oil and

fuelRef No

M 14 x 15 MIN 2 sec 7 sec 421 603 421 623

M 14 x 15 MIN 2 sec 7 sec 1 ---- 422 293

M 14 x 15 MIN 0 sec 7 sec ---- 421 634

M 14 x 15 MIN 2 sec 20 sec 421 617 ----M 14 x 15 MAX 0 sec 7 sec 2 ---- 422 299M 14 x 15 MAX 0 sec 7 sec 421 611 421 631M 18 x 15 MIN 2 sec 7 sec 4 420 460 420 461

14ldquo NPTF MIN 2 sec 7 sec 421 607 421 62714ldquo NPTF MIN 2 sec 7 sec 3 421 592

(1) Probe with the sensing point at 15 mm from sensor tip Housing nikeled(2) Probe equipped with overvoltage protection diode

(3) Probe with inbuilt overvoltage protection diode

(4) without approval

Accessories for probes with M 27 x 1 thread

421 642 Straight connector M 27x1 for corrugated tubing NW 10

421 643 90deg connector M 27x1 for corrugated tubing NW 10

421 742 Straight connector M 27x1 with 56 mm cable sealing421 743 90deg connector M 27x1 with 56 mm cable sealing

421 988 Cable with connector 421 742 300 mm421 038 Cable with connector 421 743 300 mm

Technical data see page 12 Installation instruction see page 13

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page 5

Probe with Bayonet connector 16 SEnvironmental protection IP67 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Responsedelay

Aqueousliquids

Ref No

Oil and fuel

Ref No

AqueousliquidsRef No

Oil and fuel

Ref No

M 12 x 1 MIN 2 sec 7 sec 421 404 421 593 ---- ----

M 14 x 15 MIN 2 sec 7 sec 421 575 421 595 425 002 425 003M 14 x 15 MIN 1 sec 17 sec ---- 420 445 ---- ----M 14 x 15 MIN 2 sec 7 sec 421 565 ---- ---- ----M 14 x 15 MAX 0 sec 7 sec 421 579 421 599 425 004 425 005M 14 x 15 MIN 2 sec 2 sec ---- 422 508 ---- ----

M 14 x 15 MAX 0 sec 0 sec ---- 422 511 ---- ----M 14 x 15 MIN 0 sec 0 sec 422 528 ---- ---- ----

M 14 x 15 MAX 2 sec 2 sec ---- 422 509 ---- ----M 14 x 15 MIN 2 sec 15 sec 421 637 ---- ---- ----

M 14 x 15 MIN 1 sec 2 sec 422 502 ---- ---- ----

M 14 x 15 MIN 0 sec 7 sec 421 564 421 590 ---- ----M 14 x 15 MIN 2 sec 0 sec ---- ---- ---- 422 510

M 18 x 15 MIN 2 sec 7 sec 421 570 421 572 425 006 425 007M 18 x 15 MIN 2 sec 7 sec 421 563 ---- ---- ----M 18 x 15 MAX 0 sec 7 sec 421 571 421 573 425 008 425 009

M 18 x 15 MIN 0 sec 7 sec ---- 422 031 ---- ----14ldquoNPTF MIN 2 sec 7 sec 421 577 421 597 425 010 425 011

14ldquoNPTF MIN 1 sec 17 sec 421 401 ---- ---- ----14ldquoNPTF MIN 0 sec 7 sec 421 581 ---- 425 000 ----

14ldquoNPTF MIN 0 sec 20 sec 421 636 ---- ---- ----

14ldquoNPTF MIN 6 sec 15 sec 422 500 ---- ---- ----14ldquoNPTF MAX 0 sec 7 sec 420 993 424 999 425 013 425 012

14ldquoNPTF MIN 0 sec 0 sec ---- 422 529 ---- ----14ldquoNPTF MAX 0 sec 7 sec ---- 424 999 ---- ----

38ldquo NPTF MIN 2 sec 7 sec 420 992 420 994 425 014 425 01538ldquo NPTF MIN 0 sec 7 sec ---- ---- ---- 425 00138ldquoNPTF MAX 0 sec 7 sec ---- ---- ---- 425 029

Probe with the sensing point at 3 to 7 mm from sensor tip M 14 x 15 MIN 1 sec 7 sec 422 295 ---- ---- ----

M 14 x 15 MIN 1 sec 20 sec 422 296 ---- ---- ----

M 14 x 15 MAX 0 sec 7 sec 420 991 ---- ---- ----Probe with the sensing point at 25 mm from sensor tip

M 22 x 15 MIN 1 sec 17 sec 422 501 ---- ---- ----Probe with housing nickeled

M 14 x 15 MIN 2 sec 7 sec 421 513 ---- ---- ----Probe equipped with overvoltage protection diode

Probe equipped with supressor diode

Accessories see following page

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page 6

Accessories for probes with bayonet 16 S

421 672 Straight connector for bayonet 16 S for corrugated tubing NW10

421 673 90deg connector for bayonet 16 S for corrugated tubing NW 10421 772 Straight connector for bayonet 16 S with 56 mm cable sealing

421 773 90deg connector for bayonet 16 S with 56 cable sealing

421 670 Cable with connector 421 672 300 mm421 891 Cable with connector 421 772 1015 mm

421 018 Cable with connector 421 772 1300 mm

421 586 Cable with connector 421 772 3000 mm421 668 Cable with connector 421 673 300 mm421 671 Cable with connector 421 772 800 mm421 585 Cable with connector 421 773 1300 mm421 669 Cable with connector 421 773 5000 mm421 587 Cable with connector 421 773 10000 mm

Technical data see page 12 Installation instruction see page 13

7182019 BEDIA Level Monitoring

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page 7

Probe with Cannon connector for bayonet 10 SL to VG0095342Environmental protection IP67 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Responsedelay

Aqueousliquids

Ref No

Oil and fuel

Ref No

AqueousliquidsRef No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec 421 403 421 504 421 505 421 506M 14 x 15 MAX 0 sec 0 sec ---- ---- 421 508 ----

M 14 x 15 MAX 0 sec 7 sec ---- ---- ---- 421 516M 18 x 15 MIN 2 sec 7 sec 422 512 422 513 421 500 421 501M 18 x 15 MIN 0 sec 0 sec ---- ---- ---- 421 514

M 18 x 15 MAX 2 sec 7 sec ---- 422 514 ---- ----M 18 x 15 MAX 0 sec 7 sec 421 989 421 990 421 502 421 503

M 18 x 15 MAX 0 sec 0 sec --- ---- ---- 421 509

14ldquo NPTF MIN 2 sec 7 sec 421 907 421 908 421 498 421 49914ldquo NPTF MAX 0 sec 7 sec ---- 421 909 ---- ----

12ldquo UNF MIN 2 sec 7 sec ---- 421 584 ---- ----

Accessories for probes with Cannon connector for bayonet 10 SL

421 652 Straight connector for bayonet 10 SL421 885 Straight connector for bayonet 10 SL 90deg

421 646 Cable with connector 3 x 1 with license for cut goods421 653 Cable with connector 421 652 2000 mm421 657 Cable with connector 421 652 5000 mm

421 648 Brazed adapter internal thread M 18 x 15

Technical data see page 12 Installation instruction see page 13

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page 8

Probes operating on the capacitive principleEnvironmental protection IP67 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Cable colour brown = +white = -

green = S

Cable colour brown = +white = -

green = S

Environmental protection IP67 DIN 40050 Signal output

minus potential

Signal output

plus potentialThread Monitoring

display

Integral

controlfunction

Monitoring

delay

Cable

lengthin mm

Cable

connec-tion type

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref NoM 12 x 1 MIN 0 sec 7 sec 1000 1 421 580 ---- ---- ----

M 14 x 15 MIN 2 sec 7 sec 190 1 418 152 421 991 425 016 425 017

M 14 x 15 MIN 2 sec 7 sec 190 8 421 927 421 928 ---- ----M 14 x 15 MIN 2 sec 7 sec 2000 1 ---- 421 929 ---- ----

M 14 x 15 MIN 2 sec 7 sec 250 5 ---- 421 072 ---- ----M 14 x 15 MIN 2 sec 7 sec 250 9 421 070 ---- ---- ----

M 14 x 15 MIN 2 sec 7 sec 250 3 ---- 422 525 ---- ----M 14 x 15 MAX 0 sec 7 sec 250 1 421 582 421 993 425 018 425 019M 14 x 15 MIN 0 sec 7 sec 2500 1 422 297 422 298 ---- ----

M 14 x 15 MAX 0 sec 3 sec 250 5 421 569 ---- ---- ----M 14 x 15 MAX 0 sec 7 sec 250 5 ---- 421 568 ---- ----

M 14 x 15 MIN 2 sec 7 sec 250 10 418 154 ---- ---- ----

M 14 x 15 MIN 0 sec 7 sec 550 3 422 506 422 507 ---- ----M 14 x 15 MIN 0 sec 2 sec 550 1 ---- 421 507 ---- ----

M 14 x 15 MAX 0 sec 0 sec 1000 1 ---- ---- 425 300 425 301M 14 x 15 MIN 2 sec 7 sec 300 6 421 601 421 621 ---- ----

M 14 x 15 MIN 0 sec 7 sec 300 6 421 583 ---- ---- ----

M 14 x 15 MIN 2 sec 3 sec 250 1 ---- 422 527 ---- ----() Probe suitable for brake fluid DOT3(1) Cable end without connector(2) Cable w ith 3 pole flat quick-connect terminations 63 in the housing(3) Cable with 3 pole DEUTSCH socket

(4) Cable with 3 pole round G amp H connector(5) Cable with 3 pole Reinshagen connector

(6) Probe with bayonet 16 S with separate cable 421 670 300 mm straight connector

(7) Probe with connector M 27 x 1 with 300 mm cable straight connector 421 642(8) Cable with 3 pole round AMP connector

(9) Cable with 3 flat quick-connect terminations 63 in single housing(10) Cable with 3 pole AMP connector 423 325 and strain relief

(11) Probe 422 524 like the probe 422 225 however with a monitoring of cable defect

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page 9

Environmental protection IP67 DIN 40050 Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Monitoringdelay

Cablelengthin mm

Cableconnec-tion type

Aqueousliquids

Ref No

Oil and fuel

Ref No

Aqueousliquids

Ref No

Oil and fuel

Ref No

M 18 x 15 MIN 2 sec 7 sec 1000 1 ---- 421 591 ---- ----

M 18 x 15 MIN 2 sec 7 sec 400 3 422 515 ---- ---- ----M 18 x 15 MAX 2 sec 7 sec 400 3 422 516 ---- ---- ----

M 18 x 15 MIN 2 sec 7 sec 250 2 422 503 422 504 425 020 425 021M 18 x 15 MAX 0 sec 7 sec 250 1 ---- ---- 425 022 425 023

M 18 x 15 MAX 0 sec 0 sec 1000 1 425 305 425 304 ---- ----

14ldquo NPTF MIN 0 sec 0 sec 250 1 421 566 421 567 ---- ----14ldquo NPTF MAX 0 sec 0 sec 2000 1 ---- ---- 425 030 ----14ldquo NPTF MIN 2 sec 7 sec 250 1 418 153 421 992 425 024 425 02514ldquo NPTF MAX 0 sec 7 sec 250 1 421 999 421 997 425 026 425 02714ldquo NPTF MAX 0 sec 7 sec 250 4 422 505 ---- ---- ----

14ldquo NPTF MIN 2 sec 7 sec 250 1 421 402 ---- ---- ----14ldquo NPTF MIN 2 sec 7 sec 550 3 422 225 422 226 ---- ----

14ldquo NPTF MIN 2 sec 7 sec 550 11 422 524 ---- ---- ----14ldquo NPTF MAX 0 sec 7 sec 550 3 422 521 422 522 425 302 ----

14ldquo NPTF MIN 2 sec 7 sec 300 6 421 605 421 625 ---- ----

14ldquo NPTF MIN 2 sec 7 sec 300 7 421 987 ---- ---- ----14ldquo NPTF MIN 0 sec 7 sec 550 3 ---- ---- ---- 425 303

38NPTF MAX 0 sec 7 sec 1000 1 ---- ---- ---- 425 031

R 38ldquo MAX 0 sec 7 sec 250 1 421 998 ---- ---- ----R 38ldquo MAX 0 sec 7 sec 250 3 422 286 ---- ---- ----

R 38ldquo MAX 0 sec 0 sec 360 3 ---- 421 510 ---- ----G 12 MIN 0 sec 0 sec 250 9 421 515 ---- ---- ----

G 1 MIN 2 sec 7 sec 250 1 425 307 ---- ---- ----Probe with the sensing point at 35 mm from sensor tip

R 38ldquo MAX 0 sec 7 sec 2000 1 422 523 ---- ---- ----G 1ldquo MAX 0 sec 7 sec 250 1 425 306 ---- ---- ----

() Probe suitable for brake fluid DOT3

(1) Cable end without connector(2) Cable with 3 pole flat quick-connect terminations 63 in the housing(3) Cable with 3 pole DEUTSCH socket(4) Cable with 3 pole round G amp H connector(5) Cable with 3 pole Reinshagen connector

(6) Probe with bayonet 16 S with separate cable 421 670 300 mm straight connector(7) Probe with connector M 27 x 1 with 300 mm cable straight connector 421 642

(8) Cable with 3 pole round AMP connector(9) Cable with 3 flat quick-connect terminations 63 in single housing

(10) Cable with 3 pole AMP connector 423 325 and strain relief

(11) Probe 422 524 like the probe 422 225 however with a monitoring of cable defect

Cable automotive cable FLR 3x075 black temp range - 50degC to +150degCTechnical data see page 12 Installation instruction see page 13

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page 10

Probe with connector DIN 72 585Environmental protection 69K DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Monitoringdelay

Aqueousliquids

Ref No

Oil and fuel

Ref No

Aqueousliquids

Ref No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec 420 400 420 431 420 401 420 432M 14 x 15 MIN 0 sec 7 sec ---- 420 446 ---- ----M 14 x 15 MIN 0 sec 2 sec 420 419 420 447 ---- 420 443M 14 x 15 MAX 0 sec 7 sec 420 402 420 433 420 403 420 434M 14 x 15 MAX 0 sec 0 sec ---- ---- 420 413 420 414

M 14 x 15 MIN 2 sec 60 min ---- 420 444 ---- ----

M 14 x 15 MIN 2 sec 60 sec ---- 420 449 ---- ----M 18 x 15 MIN 2 sec 7 sec 420 404 420 435 420 405 420 436

M 18 x 15 MIN 0 sec 7 sec 420 417 ---- ---- ----M 18 x 15 MAX 0 sec 7 sec 420 406 420 437 420 407 420 438

M 18 x 15 MAX 0 sec 0 sec ---- 420 430 ---- ----

R 38ldquo MAX 0 sec 7 sec 420 420 420 421 ---- ----G 38ldquo MAX 0 sec 0 sec ---- ---- ---- 420 448

14ldquo NPTF MIN 2 sec 7 sec 420 408 420 439 420 409 420 44014ldquo NPTF MIN 0 sec 7 sec 420 418 ---- ---- ----14ldquoNPTF MAX 0 sec 7 sec 420 410 420 441 420 411 420 442

14ldquoNPTF MIN 1 sec 17 sec 420 415 ---- ---- ----Probe with the sensing point 43mm from sensor tip

M 14 x 15 MIN 1 sec 17 sec 420 412

Accessories for probes with connector DIN 72585

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page 11

420 700 Straight connector for bayonet 16 S for corrugated tubing NW10

420 701 90deg connector for bayonet 16 S for corrugated tubing NW 10420 702 Connector 90deg for cable

420 703 Straight connector for cable420 704 Cable with connector 421 672 300 mm

420 705 Cable with connector 420 703 300 mm

420 706 Cable with connector 420 702 1000 mm420 707 Cable with connector 420 703 1000 mm

420 708 Cable with connector 420 702 3000 mm

Technical data see page 12 Installation instruction see page 13

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page 12

Probe with connector DIN 43 650

Environmental protection 65 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal output

minus potential

Signal output

plus potentialThread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref NoM 14 x 15 MIN 2 sec 7 sec 420 600 420 620 420 601 420 621

M 14 x 15 MAX 0 sec 7 sec 420 602 420 622 420 603 420 623M 18 x 15 MIN 2 sec 7 sec 420 604 420 624 420 605 420 625M 18 x 15 MAX 0 sec 7 sec 420 606 420 626 420 607 420 62714ldquo NPTF MIN 2 sec 7 sec 420 608 420 628 420 609 420 62914ldquoNPTF MAX 0 sec 7 sec 420 610 420 630 420 611 420 631

R 38ldquo MAX 0 sec 0 sec ---- ---- ---- 420 650

Accessories for probes with connector

421 880 connector M3x35 to DIN 43 650

Technical data see page 12 Installation instruction see page 13

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page 13

Technical data for minimum and maximum probes

Operating voltage 12V-24V (-25+50)

Output current 1 A over the whole operating voltage range

Short-circuit and overload protected overt the entire temperature range

At minus switching probes the minus potential is switched through At plus switching probes the plus potential is switched through

Sensing point 18 mm +- 6 mm

Closed-circuit current consumption approx 6 mA

Voltage spikes 70 V dropping to Un in 270 ns

Medium temperature Water - 30degC to + 110degC

Oil - 30degC to + 125degC

Ambient temperature - 30degC to + 100degC

Storage temperature - 50degC to + 125degC

Response delay see table

Integral control function see table

Shock resistance 50 g half-sine 11 ms

Pressure on sensor up to 25 bar3675 PSI

Reverse polarity protection in-built between plus and minus terminal

Mounting attitude optional

Housing brass CuZn39Pb3

capacitively connected to frame

Weight approx 125 g

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or plus

potential to the minus terminal as otherwise the probes may be destroyed- Plus switching probes Do not connect plus potential to the signal terminal or minus

potential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

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page 14

Installation Instruction for BEDIA Level Monitoring Probes

BEDIA Level Monitoring Probes may be installed in any attitude

Please observe the following instructions when installing the probe

1 To prevent false indication install the probe in a smooth area where it is not affected bysplashing media as may be the case when it is installed in a gear unit or directly in the

motor oil sump

2 To prevent false indication install the sensor at least 15mm from the wall away

Only for water - sensors

3 False indication may also occur if the sensor is mounted from above in a plasticcontainer with the medium carrying no potential In all other mounting attitudes the

housing will be in contact with the medium so as to ensure potential is available

4 Connection Diagram

Minus switching probes Plus switching probes

5 Connection of the cables free wheeling diode

Bayonet 16SThread M27x1

Bayonet 10SL Bayonet DIN 72585Bayonet DIN 43650

Cable

+ A 1 Brown

- B 2 White

S C 3 Green

sensor

wall

gt15mm

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page 15

Probe with bayonet 10 SL to VG 0095342Environmental protection 67 DIN 40050

Probe suitable for aqueous media Connection diagram

Signal outputminus potential

Signal outputplus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref No

M 18 x 15 MIN 1 sec 3 sec 421 903 421 950 421 470 421 471

M 18 x 15 MAX 1 sec 3 sec 421 951 421 952 421 472 421 473M 18 x 15 MIN 2 sec 7 sec ---- 421 984 ---- ----

M 18 x 15 MAX 0 sec 7 sec ---- 421 990 ---- ----

Probe with bayonet 10 SL to VG 0095342

Probe suitable for aqueous media

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Function-control

Integralcontrolfunction

Monitoringdelay

Aqueousliquids

Ref No

Oil and fueRef No

Aqueousliquids

Ref No

Oil and fueRef No

M 18 x 15 MIN 1 sec 3 sec 200 421 906 421 957 421 478 421 479M 18 x 15 MAX 1 sec 3 sec 200 421 958 421 959 421 480 421 481M 18 x 15 MIN 1 sec 3 sec 450 421 960 ---- ---- ----

Accessories for probes with connector Cannon for bajonet 10 SL

421 652 Straight connector for bayonet 10 SL

421 885 Straight connector for bayonet 10 SL421 646 Cable with connector 3 x 1 with license for cut goods

421 653 Cable with connector 421 652 2000 mm

421 657 Cable with connector 421 652 5000 mm421 648 Brazed adapter internal thread M 18 x 15

Technical data see following pages

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page 16

Technical data for minimum and maximum probes

Mechanical dataHousing stainless non-magneticThread M18x15 max tightening torque 30 NmSealing ring (not supplied with the system) 18x22 DIN 7603-CUFitting Cu-Zn alloy material No 20401

Connection see table to VG 0095342Isolation of sensor Tefzel ETFE

Marking function type number manufacturing date voltageMounting attitude optional immersion depth horizontal approx 3 mm plusmn 2 mm

immersion depth vertical approx 20 mm plusmn 6 mmMass approx 200 g Ambient temperature - 30degC to + 125degC

Storage temperature - 55degC to + 125degCMedium temperature - 30degC to + 125degCSinusoidal vibration (peak) 2 - 25 Hz 16mm amplitude

25 - 420 Hz 4 g amplitude

420 - 1330 Hz 5 g amplitude1330 - 2700 Hz 10 g amplitude2700 - 5000 Hz 25 g amplitude

Relative humidity up to 100

Environment Shock (peak)

50 g half-sine 11 ms

EMC IEC 801 (1-4) lt 500 mV rmsdepending on cables

EMC to VG 95373 only with external filterInterference suppression to VDE0871 limit B

Pressure on sensor max 25 bar3675 PSIMedia to be monitored water cooling water seawater oil fuel hydraulic oil

brake fluidDependability The performance is not impaired by small deposits on

the probe

Electric data Protection against reversepolarity

Voltage spikes

between UB and frame

70 V dropping to UN in270

Voltage rating 9 - 36 V Hysteresis of response max plusmn 5 mm aroundthe sensing point

Output open collector switchingminus potential

Response time - bdquolevelacceptableldquo

typically 1 s (05 s to15 s)

Closed-circuit current at24 V

lt 10 mA Response time - bdquolevelunacceptableldquo

Recovery time

typically 3 s (1 s to 4 s)

lt 2 s

Power consumption closed-circuit current plus

switching current

Integral control function see table

Switching capacity max 1 A continuous currentin the voltage range indicated

Terminal connection A = + UB B = - UB C = output signal

Load resistive and inductive Potential of housing

Dielectric strength

physically isolated fromplus UB and minus UB

VDE

0100500 VDC 1 minLoad inductance 500 mH Insulation resistance VDE 0160500 VAC50

Hz 1 minDielectric resistance gt 10 M Ohm

Voltage through lt 0 5 V

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or pluspotential to the minus terminal as otherwise the probes may be destroyed

- Plus switching probes Do not connect plus potential to the signal terminal or minuspotential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

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page 17

Probes operating on the capacitive principle Ex approvedEnvironmental protection 65 DIN 40050

Probe suitable for aqueousmedia

Probe suitable for oil and fuel

Certificate of ConformityEN 50014-1977 + A1 - A5 (VDE 01700171 Part 1187) General requirementsEN 50020-1977 + A1 - A2 (VDE 01700171 Part 7187) intrinsic safety bdquoIldquo

EEx Ia I

Probe for mining applications

Signal outputMinus potential

ThreadMonitoring

displayIntegralcontrolfunction

Monitoringdelay

Voltage (voltDC)

Aqueous liquids

Ref No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec DC 9-13 V 421 934 421 936M 14 x 15 MAX 2 sec 7 sec DC 9-13 V 421 935 421 937M 18 x 15 MIN 2 sec 7 sec DC 9-13 V 421 930 421 932

M 18 x 15 MAX 2 sec 7 sec DC 9-13 V 421 931 421 93314ldquo NPTF MIN 2 sec 7 sec DC 9-13 V 421 938 421 940

14ldquo NPTF MAX 2 sec 7 sec DC 9-13 V 421 939 421 941

UB+ = Brown

Minus = WhiteSignal = Green

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page 18

Technical data for minimum and maximum probes

Operating voltage 9 - 13 V DC

Closed-circuit current consumption approx 6 mA

Sensing point 20 mm plusmn 6 mm from sensor tip

Power output at the signal output open collector Should be limited to max 20 mA

by the user

Storage temperature - 30degC to +125degCOperating temperature - 30degC to +125degC

Fault indicating delay approx 7 sec

Integral control function approx 2 sec

Shock 50 g half-sine 11 ms

Vibration to GL requirements for type certified tests

Admissible pressure on sensor 5 bar735 PSI

Environmental protection IP 65

Protection against reverse polarity in-built between plus and minus terminal

Mounting attitude horizontal preferred

Housing brass CuZn39Pb3

Sensor coating ETFE Tefzelreg

Weight with 10 m cable approx 800 g

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page 19

Certificate of Conformity BVS 94C1001

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page 20

Certificate of Conformity BVS 94C1001

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page 21

Conductivity probeEnvironmental protection 65 DIN 40050

Probe suitable for aqueous media

Conductivity probe with bayonet 16 S

Signal outputMinus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous liquids

Ref No

M 14 x 15 MIN 2 sec 7 sec 422 200

M 14 x 15 MAX 2 sec 7 sec 422 201

14ldquo NPTF MIN 2 sec 7 sec 422 20414ldquo NPTF MAX 2 sec 7 sec 422 205

Accessories for probes with bayonet 16 S

421 672 Straight connector for bayonet 16 S for corrugated tubing NW 10421 673 90deg connector for bayonet 16 S for corrugated tubing NW 10421 772 Straight connector for bayonet 16 S with 56 mm cable sealing421 773 90deg connector for bayonet 16 S with 56 mm cable sealing

421 670 Cable with connector 421 672 300 mm

421 018 Cable with connector 421 772 1015 mm421 586 Cable with connector 421 772 1300 mm

421 668 Cable with connector 421 772 3000 mm421 671 Cable with connector 421 673 300 mm

421 891 Cable with connector 421 773 800 mm

421 585 Cable with connector 421 773 1300 mm

421 669 Cable with connector 421 773 5000 mm

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page 22

Technical Data for minimum and maximum probes

Voltage rating DC 16 - 32 V

Power consumption typically 7 mA

Switching capacity 3 W (resistive load)

Output minus switching

Voltage drop approx 35 V with 3 W lamp load

Load dump protection 70 V 270 ns

Protection from fault conditions to VDE 0939

Lamp test in-built (approx 3 s)

Fault indicating delay approx 7 s

Free-wheeling diode Inductive loads A free wheeling diode eg 1N4007 has to bemounted at the load

Protection against reverse polarity in-built between plus and minus terminalObserve correct connection of plus and signal terminals

Operating temperature - 40degC to + 120degC

Storage temperature - 40degC to + 120degC

Admissible pressure on sensor 2 bar

Max tightening torque on thread 30 Nm

Mounting attitude optional

Housing brass MS CuZnPb3nickel-plated potential-free

Sensor coating Tefzel

983214

ETFE

Sensor brass MS CuZn39Pb3(immersed in the medium)

Weight approx 100 g

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page 23

Level monitoring in the oil sump

Which are the benefits of a level monitoring system in the oil sump over conventional

pressure and temperature sensorsTemperature sensors indicate very slowly When motor oil is lost e g by tubing breakagethe component temperature can no longer be conducted to the sensors

The lower limit value of oil pressure switches or sensors is set low (low oil pressure with themotor running at no load) At rated motor speed and with too little oil in the oil circuit an oil-airmixture may be produced without that a signal is put out The components are no longer

sufficiently cooled and lubricatedIn the two events described above the output signal is available either too late or even not atall so that the motor will be damaged The level monitoring system however indicates even

before the oil level becomes too low i e as soon as the oil level has fallen 10 to 20 mmbelow the minimum marking on the dipstick Oil pressure and oil temperature indication isalways ensured

Functional diagram

Installation instructions

1 Drain the motor oil

2 Secure the adjustable elbow coupling with the tubing and the sensor support at themotor The sensor housing should be adjustable through oblong holes to determine theminimum point

3 Install the ventilation for the crankcase (e g inspection hole cover)

4 Install and connect the sensor

5 Check for correct electrical function The minimum sensor must indicate now

6 Refill the oil up to the minimum marking on the dipstick

7 Move the sensor and support slowly down until the signal is no longer availableTheswitch point of the sensor is now exactly at the minimum oil level of the motor

8 Move the sensor down by another 10 to 20 mm and fix it The signal bdquooil level too lowldquowill now be put out when the level is approx 10 to 20 mm below the minimum markingon the dipstick

Legend Ref Nr

1 Tubing complete with 350 mm pipecoupling

421 660

Tubing complete with 450 mm pipe

coupling

421 661

Tubing complete with 550 mm pipecoupling

421 659

2 Sensor support 454 134

3 PA pipe available in meters 421 662

4 Level monitoring sensor

Oil MIN 9 - 36 V 421 595Oil MAX 9 - 36 V 421 599

5 withoutcable

withcable

Straight connector 421 672 421 67090deg connector 421 673 421 671

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page 24

Accessories

Plug Connection

1 Straight taper M 27 x 1 orstraight taper bayonet 16 S

2 Gripping seal-ring NW 103 Sleeve nut for NH9-1513

A A Tapered rubber ring must

point into the sleeve nutB B Tube polyflex NW 10Part-No 421 642 M 27 x 1

Part-No 421 672 Bayonet 16 S

Plug Connection

1 Taper M 27 x 1 90deg or

2 Tape 90deg bayonet 16 S3 Gripping seal-ring NW 10

A Tapered rubber ring mustpoint into the sleeve nut

B Tube polyflex NW 10

Part-No 421 643 M 27 x 1Part-No 421 673 Bayonet 16 S

Screw-in Adapter

Outside M 22 x 15Inside M 14 x 15

Part-No 421 640

Braze-in Adapter

Inside 14ldquo NPFTPart-No 421 641

Inside M 14 x 15Part-No 421 644

Cable and Plug

Connection for Probes Approved by Classifica-tion Societies

A Cablem Part-No 421 646

B Plug connectionPart-No 421 645

Plug connection fittedwith 2 m cablePart-No 421 647

Inside M 18 x 15

Part-No 421 648

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page 25

Control and Power Supply Unit 110220 V AC 1224 V DC Order No 421 650

Up to three probes can

be fed from this powersupply unit A relay 3 Amax with one normally

open and one normallyclosed contact is fittedwhich can be used for

additional control tasks A power supply unit isavailable for connection

to 220 V

The voltage for the

relay contacts must notbe taken from thepower supply unit

Housing plastic with control lamps MIN + MAX 110 x 75 x 65 _________________________________________________________________________Control Unit Best-Nr 421 651

for automatic filling and emptying of liquids This unit is designed to control two bdquominimumldquoprobes Probe 2 monitors the maximum liquid level probe 1 the minimum level An outputrelay with a change-over contact is switched automatically for external control tasks

Relays 1 and 2 are switched to conduct when the liquids falls below minimum level Whenthe liquid level reaches maximum relay circuits 1 and 2 are automatically interrupted

LED-display

bull no display liquid level above

bull maximum LED bdquomaximumldquo lights liquid Level is between maximum and minimum andis falling

bull Both LEDrsquos light liquid level is below minimum or is between minimum and maximumand is rising Contacts r1 and r2 are closed

Two bdquominimumldquo minus switching probes with built-in control function are used for this

control The self-control is only visible when both probes are immersed in liquid The signalappears for about 2 seconds when the power supply is switched onFor this period the output (contact r1 and r2) is conducting The voltage for the relay contacts

must not be taken from the power supply unit

Technical Data for Control Unit

Operating 110220 V AC or 1224 V DC Mounting position variable

Relay relay contact t 3 Amax

Temperature - 30 degC to + 75 degC

Protective system IP 54

Control Unit for filling or emptying

Housing plastic with control lamp 110 x 75 x 65 Part No 421 651

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page 26

Probes operating on the capacitive principle

This probe is self-adjustable and can be used for liquids including high viscosity media and

powders

Short description

This BEDIA-Level Sensor is suitable for liquids including high viscosity media and powdersIt operates on the principle of electrical capacitance changes arising when an electrodesurrounded by air is immersed in a media This capacitance change causes an electric

circuit to oscillate thus switching the output transistor off The use of latest state-of-the-arthybrid technology allows the probe and the electronic circuitry to be enclosed in a singlesealed unit

ApplicationThe BEDIA-Level Sensor with itrsquos large temperature range and wide sensitivity adjusting

range is suitable for a wide spread of applications process control petrochemical industrytank level monitoring bottle and crate washing systems in breweries etc

Operating modes

Minimum switching Normally the sensing probe is immersed and the green LED indicates

As the level drops below the probe the green LED extinguishes

Maximum switching Normally the sensing probe is not immersed and the green LED

indicates As the level rises above the probe the green LED extinguishes

Diagram of working method

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page 27

Technical data

Circuit voltage 9 - 36 V DC Short circuit and overload

protectedPower consumption normal operation typ17 mA

fault operation typ10 mATime-delay typ01 sec

OutputTransistor plus switching 300 mA (500 mA short-time) short-circuit and overload proof with integral suppression diode

Terminal

configuration

max 1 mm2 screw terminals (AWG 17) Operating

temperature range

- 20degC to + 130degC

- 20degC to + 85degCMaterial - probe envelope PA 12-Gf

(polyamide with glass fibre)- fitting V2A (DIN 14305AISI 303)

- housing cover PA6-3-T (trogamide -transparent)

- O-ring FKM (viton)

Cable length max 300 m

Mounting plane horizontal (by preference Cable gland PG 7Max switchingpoint hysteresis

sensor diameter Mass ca 250 g

Cable automotive cable FLR 3 x 075 black Temp range -50degC to + 150degCBEDIA-part-no for cut goods 422 210

Dimensional diagram

A B BEDIA part no

G 34A 16mm 422 900

frac34ldquo NPT 21mm 422 901

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page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

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page 5

Probe with Bayonet connector 16 SEnvironmental protection IP67 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Responsedelay

Aqueousliquids

Ref No

Oil and fuel

Ref No

AqueousliquidsRef No

Oil and fuel

Ref No

M 12 x 1 MIN 2 sec 7 sec 421 404 421 593 ---- ----

M 14 x 15 MIN 2 sec 7 sec 421 575 421 595 425 002 425 003M 14 x 15 MIN 1 sec 17 sec ---- 420 445 ---- ----M 14 x 15 MIN 2 sec 7 sec 421 565 ---- ---- ----M 14 x 15 MAX 0 sec 7 sec 421 579 421 599 425 004 425 005M 14 x 15 MIN 2 sec 2 sec ---- 422 508 ---- ----

M 14 x 15 MAX 0 sec 0 sec ---- 422 511 ---- ----M 14 x 15 MIN 0 sec 0 sec 422 528 ---- ---- ----

M 14 x 15 MAX 2 sec 2 sec ---- 422 509 ---- ----M 14 x 15 MIN 2 sec 15 sec 421 637 ---- ---- ----

M 14 x 15 MIN 1 sec 2 sec 422 502 ---- ---- ----

M 14 x 15 MIN 0 sec 7 sec 421 564 421 590 ---- ----M 14 x 15 MIN 2 sec 0 sec ---- ---- ---- 422 510

M 18 x 15 MIN 2 sec 7 sec 421 570 421 572 425 006 425 007M 18 x 15 MIN 2 sec 7 sec 421 563 ---- ---- ----M 18 x 15 MAX 0 sec 7 sec 421 571 421 573 425 008 425 009

M 18 x 15 MIN 0 sec 7 sec ---- 422 031 ---- ----14ldquoNPTF MIN 2 sec 7 sec 421 577 421 597 425 010 425 011

14ldquoNPTF MIN 1 sec 17 sec 421 401 ---- ---- ----14ldquoNPTF MIN 0 sec 7 sec 421 581 ---- 425 000 ----

14ldquoNPTF MIN 0 sec 20 sec 421 636 ---- ---- ----

14ldquoNPTF MIN 6 sec 15 sec 422 500 ---- ---- ----14ldquoNPTF MAX 0 sec 7 sec 420 993 424 999 425 013 425 012

14ldquoNPTF MIN 0 sec 0 sec ---- 422 529 ---- ----14ldquoNPTF MAX 0 sec 7 sec ---- 424 999 ---- ----

38ldquo NPTF MIN 2 sec 7 sec 420 992 420 994 425 014 425 01538ldquo NPTF MIN 0 sec 7 sec ---- ---- ---- 425 00138ldquoNPTF MAX 0 sec 7 sec ---- ---- ---- 425 029

Probe with the sensing point at 3 to 7 mm from sensor tip M 14 x 15 MIN 1 sec 7 sec 422 295 ---- ---- ----

M 14 x 15 MIN 1 sec 20 sec 422 296 ---- ---- ----

M 14 x 15 MAX 0 sec 7 sec 420 991 ---- ---- ----Probe with the sensing point at 25 mm from sensor tip

M 22 x 15 MIN 1 sec 17 sec 422 501 ---- ---- ----Probe with housing nickeled

M 14 x 15 MIN 2 sec 7 sec 421 513 ---- ---- ----Probe equipped with overvoltage protection diode

Probe equipped with supressor diode

Accessories see following page

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page 6

Accessories for probes with bayonet 16 S

421 672 Straight connector for bayonet 16 S for corrugated tubing NW10

421 673 90deg connector for bayonet 16 S for corrugated tubing NW 10421 772 Straight connector for bayonet 16 S with 56 mm cable sealing

421 773 90deg connector for bayonet 16 S with 56 cable sealing

421 670 Cable with connector 421 672 300 mm421 891 Cable with connector 421 772 1015 mm

421 018 Cable with connector 421 772 1300 mm

421 586 Cable with connector 421 772 3000 mm421 668 Cable with connector 421 673 300 mm421 671 Cable with connector 421 772 800 mm421 585 Cable with connector 421 773 1300 mm421 669 Cable with connector 421 773 5000 mm421 587 Cable with connector 421 773 10000 mm

Technical data see page 12 Installation instruction see page 13

7182019 BEDIA Level Monitoring

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page 7

Probe with Cannon connector for bayonet 10 SL to VG0095342Environmental protection IP67 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Responsedelay

Aqueousliquids

Ref No

Oil and fuel

Ref No

AqueousliquidsRef No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec 421 403 421 504 421 505 421 506M 14 x 15 MAX 0 sec 0 sec ---- ---- 421 508 ----

M 14 x 15 MAX 0 sec 7 sec ---- ---- ---- 421 516M 18 x 15 MIN 2 sec 7 sec 422 512 422 513 421 500 421 501M 18 x 15 MIN 0 sec 0 sec ---- ---- ---- 421 514

M 18 x 15 MAX 2 sec 7 sec ---- 422 514 ---- ----M 18 x 15 MAX 0 sec 7 sec 421 989 421 990 421 502 421 503

M 18 x 15 MAX 0 sec 0 sec --- ---- ---- 421 509

14ldquo NPTF MIN 2 sec 7 sec 421 907 421 908 421 498 421 49914ldquo NPTF MAX 0 sec 7 sec ---- 421 909 ---- ----

12ldquo UNF MIN 2 sec 7 sec ---- 421 584 ---- ----

Accessories for probes with Cannon connector for bayonet 10 SL

421 652 Straight connector for bayonet 10 SL421 885 Straight connector for bayonet 10 SL 90deg

421 646 Cable with connector 3 x 1 with license for cut goods421 653 Cable with connector 421 652 2000 mm421 657 Cable with connector 421 652 5000 mm

421 648 Brazed adapter internal thread M 18 x 15

Technical data see page 12 Installation instruction see page 13

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page 8

Probes operating on the capacitive principleEnvironmental protection IP67 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Cable colour brown = +white = -

green = S

Cable colour brown = +white = -

green = S

Environmental protection IP67 DIN 40050 Signal output

minus potential

Signal output

plus potentialThread Monitoring

display

Integral

controlfunction

Monitoring

delay

Cable

lengthin mm

Cable

connec-tion type

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref NoM 12 x 1 MIN 0 sec 7 sec 1000 1 421 580 ---- ---- ----

M 14 x 15 MIN 2 sec 7 sec 190 1 418 152 421 991 425 016 425 017

M 14 x 15 MIN 2 sec 7 sec 190 8 421 927 421 928 ---- ----M 14 x 15 MIN 2 sec 7 sec 2000 1 ---- 421 929 ---- ----

M 14 x 15 MIN 2 sec 7 sec 250 5 ---- 421 072 ---- ----M 14 x 15 MIN 2 sec 7 sec 250 9 421 070 ---- ---- ----

M 14 x 15 MIN 2 sec 7 sec 250 3 ---- 422 525 ---- ----M 14 x 15 MAX 0 sec 7 sec 250 1 421 582 421 993 425 018 425 019M 14 x 15 MIN 0 sec 7 sec 2500 1 422 297 422 298 ---- ----

M 14 x 15 MAX 0 sec 3 sec 250 5 421 569 ---- ---- ----M 14 x 15 MAX 0 sec 7 sec 250 5 ---- 421 568 ---- ----

M 14 x 15 MIN 2 sec 7 sec 250 10 418 154 ---- ---- ----

M 14 x 15 MIN 0 sec 7 sec 550 3 422 506 422 507 ---- ----M 14 x 15 MIN 0 sec 2 sec 550 1 ---- 421 507 ---- ----

M 14 x 15 MAX 0 sec 0 sec 1000 1 ---- ---- 425 300 425 301M 14 x 15 MIN 2 sec 7 sec 300 6 421 601 421 621 ---- ----

M 14 x 15 MIN 0 sec 7 sec 300 6 421 583 ---- ---- ----

M 14 x 15 MIN 2 sec 3 sec 250 1 ---- 422 527 ---- ----() Probe suitable for brake fluid DOT3(1) Cable end without connector(2) Cable w ith 3 pole flat quick-connect terminations 63 in the housing(3) Cable with 3 pole DEUTSCH socket

(4) Cable with 3 pole round G amp H connector(5) Cable with 3 pole Reinshagen connector

(6) Probe with bayonet 16 S with separate cable 421 670 300 mm straight connector

(7) Probe with connector M 27 x 1 with 300 mm cable straight connector 421 642(8) Cable with 3 pole round AMP connector

(9) Cable with 3 flat quick-connect terminations 63 in single housing(10) Cable with 3 pole AMP connector 423 325 and strain relief

(11) Probe 422 524 like the probe 422 225 however with a monitoring of cable defect

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page 9

Environmental protection IP67 DIN 40050 Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Monitoringdelay

Cablelengthin mm

Cableconnec-tion type

Aqueousliquids

Ref No

Oil and fuel

Ref No

Aqueousliquids

Ref No

Oil and fuel

Ref No

M 18 x 15 MIN 2 sec 7 sec 1000 1 ---- 421 591 ---- ----

M 18 x 15 MIN 2 sec 7 sec 400 3 422 515 ---- ---- ----M 18 x 15 MAX 2 sec 7 sec 400 3 422 516 ---- ---- ----

M 18 x 15 MIN 2 sec 7 sec 250 2 422 503 422 504 425 020 425 021M 18 x 15 MAX 0 sec 7 sec 250 1 ---- ---- 425 022 425 023

M 18 x 15 MAX 0 sec 0 sec 1000 1 425 305 425 304 ---- ----

14ldquo NPTF MIN 0 sec 0 sec 250 1 421 566 421 567 ---- ----14ldquo NPTF MAX 0 sec 0 sec 2000 1 ---- ---- 425 030 ----14ldquo NPTF MIN 2 sec 7 sec 250 1 418 153 421 992 425 024 425 02514ldquo NPTF MAX 0 sec 7 sec 250 1 421 999 421 997 425 026 425 02714ldquo NPTF MAX 0 sec 7 sec 250 4 422 505 ---- ---- ----

14ldquo NPTF MIN 2 sec 7 sec 250 1 421 402 ---- ---- ----14ldquo NPTF MIN 2 sec 7 sec 550 3 422 225 422 226 ---- ----

14ldquo NPTF MIN 2 sec 7 sec 550 11 422 524 ---- ---- ----14ldquo NPTF MAX 0 sec 7 sec 550 3 422 521 422 522 425 302 ----

14ldquo NPTF MIN 2 sec 7 sec 300 6 421 605 421 625 ---- ----

14ldquo NPTF MIN 2 sec 7 sec 300 7 421 987 ---- ---- ----14ldquo NPTF MIN 0 sec 7 sec 550 3 ---- ---- ---- 425 303

38NPTF MAX 0 sec 7 sec 1000 1 ---- ---- ---- 425 031

R 38ldquo MAX 0 sec 7 sec 250 1 421 998 ---- ---- ----R 38ldquo MAX 0 sec 7 sec 250 3 422 286 ---- ---- ----

R 38ldquo MAX 0 sec 0 sec 360 3 ---- 421 510 ---- ----G 12 MIN 0 sec 0 sec 250 9 421 515 ---- ---- ----

G 1 MIN 2 sec 7 sec 250 1 425 307 ---- ---- ----Probe with the sensing point at 35 mm from sensor tip

R 38ldquo MAX 0 sec 7 sec 2000 1 422 523 ---- ---- ----G 1ldquo MAX 0 sec 7 sec 250 1 425 306 ---- ---- ----

() Probe suitable for brake fluid DOT3

(1) Cable end without connector(2) Cable with 3 pole flat quick-connect terminations 63 in the housing(3) Cable with 3 pole DEUTSCH socket(4) Cable with 3 pole round G amp H connector(5) Cable with 3 pole Reinshagen connector

(6) Probe with bayonet 16 S with separate cable 421 670 300 mm straight connector(7) Probe with connector M 27 x 1 with 300 mm cable straight connector 421 642

(8) Cable with 3 pole round AMP connector(9) Cable with 3 flat quick-connect terminations 63 in single housing

(10) Cable with 3 pole AMP connector 423 325 and strain relief

(11) Probe 422 524 like the probe 422 225 however with a monitoring of cable defect

Cable automotive cable FLR 3x075 black temp range - 50degC to +150degCTechnical data see page 12 Installation instruction see page 13

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page 10

Probe with connector DIN 72 585Environmental protection 69K DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Monitoringdelay

Aqueousliquids

Ref No

Oil and fuel

Ref No

Aqueousliquids

Ref No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec 420 400 420 431 420 401 420 432M 14 x 15 MIN 0 sec 7 sec ---- 420 446 ---- ----M 14 x 15 MIN 0 sec 2 sec 420 419 420 447 ---- 420 443M 14 x 15 MAX 0 sec 7 sec 420 402 420 433 420 403 420 434M 14 x 15 MAX 0 sec 0 sec ---- ---- 420 413 420 414

M 14 x 15 MIN 2 sec 60 min ---- 420 444 ---- ----

M 14 x 15 MIN 2 sec 60 sec ---- 420 449 ---- ----M 18 x 15 MIN 2 sec 7 sec 420 404 420 435 420 405 420 436

M 18 x 15 MIN 0 sec 7 sec 420 417 ---- ---- ----M 18 x 15 MAX 0 sec 7 sec 420 406 420 437 420 407 420 438

M 18 x 15 MAX 0 sec 0 sec ---- 420 430 ---- ----

R 38ldquo MAX 0 sec 7 sec 420 420 420 421 ---- ----G 38ldquo MAX 0 sec 0 sec ---- ---- ---- 420 448

14ldquo NPTF MIN 2 sec 7 sec 420 408 420 439 420 409 420 44014ldquo NPTF MIN 0 sec 7 sec 420 418 ---- ---- ----14ldquoNPTF MAX 0 sec 7 sec 420 410 420 441 420 411 420 442

14ldquoNPTF MIN 1 sec 17 sec 420 415 ---- ---- ----Probe with the sensing point 43mm from sensor tip

M 14 x 15 MIN 1 sec 17 sec 420 412

Accessories for probes with connector DIN 72585

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page 11

420 700 Straight connector for bayonet 16 S for corrugated tubing NW10

420 701 90deg connector for bayonet 16 S for corrugated tubing NW 10420 702 Connector 90deg for cable

420 703 Straight connector for cable420 704 Cable with connector 421 672 300 mm

420 705 Cable with connector 420 703 300 mm

420 706 Cable with connector 420 702 1000 mm420 707 Cable with connector 420 703 1000 mm

420 708 Cable with connector 420 702 3000 mm

Technical data see page 12 Installation instruction see page 13

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page 12

Probe with connector DIN 43 650

Environmental protection 65 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal output

minus potential

Signal output

plus potentialThread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref NoM 14 x 15 MIN 2 sec 7 sec 420 600 420 620 420 601 420 621

M 14 x 15 MAX 0 sec 7 sec 420 602 420 622 420 603 420 623M 18 x 15 MIN 2 sec 7 sec 420 604 420 624 420 605 420 625M 18 x 15 MAX 0 sec 7 sec 420 606 420 626 420 607 420 62714ldquo NPTF MIN 2 sec 7 sec 420 608 420 628 420 609 420 62914ldquoNPTF MAX 0 sec 7 sec 420 610 420 630 420 611 420 631

R 38ldquo MAX 0 sec 0 sec ---- ---- ---- 420 650

Accessories for probes with connector

421 880 connector M3x35 to DIN 43 650

Technical data see page 12 Installation instruction see page 13

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page 13

Technical data for minimum and maximum probes

Operating voltage 12V-24V (-25+50)

Output current 1 A over the whole operating voltage range

Short-circuit and overload protected overt the entire temperature range

At minus switching probes the minus potential is switched through At plus switching probes the plus potential is switched through

Sensing point 18 mm +- 6 mm

Closed-circuit current consumption approx 6 mA

Voltage spikes 70 V dropping to Un in 270 ns

Medium temperature Water - 30degC to + 110degC

Oil - 30degC to + 125degC

Ambient temperature - 30degC to + 100degC

Storage temperature - 50degC to + 125degC

Response delay see table

Integral control function see table

Shock resistance 50 g half-sine 11 ms

Pressure on sensor up to 25 bar3675 PSI

Reverse polarity protection in-built between plus and minus terminal

Mounting attitude optional

Housing brass CuZn39Pb3

capacitively connected to frame

Weight approx 125 g

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or plus

potential to the minus terminal as otherwise the probes may be destroyed- Plus switching probes Do not connect plus potential to the signal terminal or minus

potential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

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page 14

Installation Instruction for BEDIA Level Monitoring Probes

BEDIA Level Monitoring Probes may be installed in any attitude

Please observe the following instructions when installing the probe

1 To prevent false indication install the probe in a smooth area where it is not affected bysplashing media as may be the case when it is installed in a gear unit or directly in the

motor oil sump

2 To prevent false indication install the sensor at least 15mm from the wall away

Only for water - sensors

3 False indication may also occur if the sensor is mounted from above in a plasticcontainer with the medium carrying no potential In all other mounting attitudes the

housing will be in contact with the medium so as to ensure potential is available

4 Connection Diagram

Minus switching probes Plus switching probes

5 Connection of the cables free wheeling diode

Bayonet 16SThread M27x1

Bayonet 10SL Bayonet DIN 72585Bayonet DIN 43650

Cable

+ A 1 Brown

- B 2 White

S C 3 Green

sensor

wall

gt15mm

7182019 BEDIA Level Monitoring

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page 15

Probe with bayonet 10 SL to VG 0095342Environmental protection 67 DIN 40050

Probe suitable for aqueous media Connection diagram

Signal outputminus potential

Signal outputplus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref No

M 18 x 15 MIN 1 sec 3 sec 421 903 421 950 421 470 421 471

M 18 x 15 MAX 1 sec 3 sec 421 951 421 952 421 472 421 473M 18 x 15 MIN 2 sec 7 sec ---- 421 984 ---- ----

M 18 x 15 MAX 0 sec 7 sec ---- 421 990 ---- ----

Probe with bayonet 10 SL to VG 0095342

Probe suitable for aqueous media

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Function-control

Integralcontrolfunction

Monitoringdelay

Aqueousliquids

Ref No

Oil and fueRef No

Aqueousliquids

Ref No

Oil and fueRef No

M 18 x 15 MIN 1 sec 3 sec 200 421 906 421 957 421 478 421 479M 18 x 15 MAX 1 sec 3 sec 200 421 958 421 959 421 480 421 481M 18 x 15 MIN 1 sec 3 sec 450 421 960 ---- ---- ----

Accessories for probes with connector Cannon for bajonet 10 SL

421 652 Straight connector for bayonet 10 SL

421 885 Straight connector for bayonet 10 SL421 646 Cable with connector 3 x 1 with license for cut goods

421 653 Cable with connector 421 652 2000 mm

421 657 Cable with connector 421 652 5000 mm421 648 Brazed adapter internal thread M 18 x 15

Technical data see following pages

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page 16

Technical data for minimum and maximum probes

Mechanical dataHousing stainless non-magneticThread M18x15 max tightening torque 30 NmSealing ring (not supplied with the system) 18x22 DIN 7603-CUFitting Cu-Zn alloy material No 20401

Connection see table to VG 0095342Isolation of sensor Tefzel ETFE

Marking function type number manufacturing date voltageMounting attitude optional immersion depth horizontal approx 3 mm plusmn 2 mm

immersion depth vertical approx 20 mm plusmn 6 mmMass approx 200 g Ambient temperature - 30degC to + 125degC

Storage temperature - 55degC to + 125degCMedium temperature - 30degC to + 125degCSinusoidal vibration (peak) 2 - 25 Hz 16mm amplitude

25 - 420 Hz 4 g amplitude

420 - 1330 Hz 5 g amplitude1330 - 2700 Hz 10 g amplitude2700 - 5000 Hz 25 g amplitude

Relative humidity up to 100

Environment Shock (peak)

50 g half-sine 11 ms

EMC IEC 801 (1-4) lt 500 mV rmsdepending on cables

EMC to VG 95373 only with external filterInterference suppression to VDE0871 limit B

Pressure on sensor max 25 bar3675 PSIMedia to be monitored water cooling water seawater oil fuel hydraulic oil

brake fluidDependability The performance is not impaired by small deposits on

the probe

Electric data Protection against reversepolarity

Voltage spikes

between UB and frame

70 V dropping to UN in270

Voltage rating 9 - 36 V Hysteresis of response max plusmn 5 mm aroundthe sensing point

Output open collector switchingminus potential

Response time - bdquolevelacceptableldquo

typically 1 s (05 s to15 s)

Closed-circuit current at24 V

lt 10 mA Response time - bdquolevelunacceptableldquo

Recovery time

typically 3 s (1 s to 4 s)

lt 2 s

Power consumption closed-circuit current plus

switching current

Integral control function see table

Switching capacity max 1 A continuous currentin the voltage range indicated

Terminal connection A = + UB B = - UB C = output signal

Load resistive and inductive Potential of housing

Dielectric strength

physically isolated fromplus UB and minus UB

VDE

0100500 VDC 1 minLoad inductance 500 mH Insulation resistance VDE 0160500 VAC50

Hz 1 minDielectric resistance gt 10 M Ohm

Voltage through lt 0 5 V

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or pluspotential to the minus terminal as otherwise the probes may be destroyed

- Plus switching probes Do not connect plus potential to the signal terminal or minuspotential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

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page 17

Probes operating on the capacitive principle Ex approvedEnvironmental protection 65 DIN 40050

Probe suitable for aqueousmedia

Probe suitable for oil and fuel

Certificate of ConformityEN 50014-1977 + A1 - A5 (VDE 01700171 Part 1187) General requirementsEN 50020-1977 + A1 - A2 (VDE 01700171 Part 7187) intrinsic safety bdquoIldquo

EEx Ia I

Probe for mining applications

Signal outputMinus potential

ThreadMonitoring

displayIntegralcontrolfunction

Monitoringdelay

Voltage (voltDC)

Aqueous liquids

Ref No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec DC 9-13 V 421 934 421 936M 14 x 15 MAX 2 sec 7 sec DC 9-13 V 421 935 421 937M 18 x 15 MIN 2 sec 7 sec DC 9-13 V 421 930 421 932

M 18 x 15 MAX 2 sec 7 sec DC 9-13 V 421 931 421 93314ldquo NPTF MIN 2 sec 7 sec DC 9-13 V 421 938 421 940

14ldquo NPTF MAX 2 sec 7 sec DC 9-13 V 421 939 421 941

UB+ = Brown

Minus = WhiteSignal = Green

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page 18

Technical data for minimum and maximum probes

Operating voltage 9 - 13 V DC

Closed-circuit current consumption approx 6 mA

Sensing point 20 mm plusmn 6 mm from sensor tip

Power output at the signal output open collector Should be limited to max 20 mA

by the user

Storage temperature - 30degC to +125degCOperating temperature - 30degC to +125degC

Fault indicating delay approx 7 sec

Integral control function approx 2 sec

Shock 50 g half-sine 11 ms

Vibration to GL requirements for type certified tests

Admissible pressure on sensor 5 bar735 PSI

Environmental protection IP 65

Protection against reverse polarity in-built between plus and minus terminal

Mounting attitude horizontal preferred

Housing brass CuZn39Pb3

Sensor coating ETFE Tefzelreg

Weight with 10 m cable approx 800 g

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page 19

Certificate of Conformity BVS 94C1001

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page 20

Certificate of Conformity BVS 94C1001

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page 21

Conductivity probeEnvironmental protection 65 DIN 40050

Probe suitable for aqueous media

Conductivity probe with bayonet 16 S

Signal outputMinus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous liquids

Ref No

M 14 x 15 MIN 2 sec 7 sec 422 200

M 14 x 15 MAX 2 sec 7 sec 422 201

14ldquo NPTF MIN 2 sec 7 sec 422 20414ldquo NPTF MAX 2 sec 7 sec 422 205

Accessories for probes with bayonet 16 S

421 672 Straight connector for bayonet 16 S for corrugated tubing NW 10421 673 90deg connector for bayonet 16 S for corrugated tubing NW 10421 772 Straight connector for bayonet 16 S with 56 mm cable sealing421 773 90deg connector for bayonet 16 S with 56 mm cable sealing

421 670 Cable with connector 421 672 300 mm

421 018 Cable with connector 421 772 1015 mm421 586 Cable with connector 421 772 1300 mm

421 668 Cable with connector 421 772 3000 mm421 671 Cable with connector 421 673 300 mm

421 891 Cable with connector 421 773 800 mm

421 585 Cable with connector 421 773 1300 mm

421 669 Cable with connector 421 773 5000 mm

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page 22

Technical Data for minimum and maximum probes

Voltage rating DC 16 - 32 V

Power consumption typically 7 mA

Switching capacity 3 W (resistive load)

Output minus switching

Voltage drop approx 35 V with 3 W lamp load

Load dump protection 70 V 270 ns

Protection from fault conditions to VDE 0939

Lamp test in-built (approx 3 s)

Fault indicating delay approx 7 s

Free-wheeling diode Inductive loads A free wheeling diode eg 1N4007 has to bemounted at the load

Protection against reverse polarity in-built between plus and minus terminalObserve correct connection of plus and signal terminals

Operating temperature - 40degC to + 120degC

Storage temperature - 40degC to + 120degC

Admissible pressure on sensor 2 bar

Max tightening torque on thread 30 Nm

Mounting attitude optional

Housing brass MS CuZnPb3nickel-plated potential-free

Sensor coating Tefzel

983214

ETFE

Sensor brass MS CuZn39Pb3(immersed in the medium)

Weight approx 100 g

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page 23

Level monitoring in the oil sump

Which are the benefits of a level monitoring system in the oil sump over conventional

pressure and temperature sensorsTemperature sensors indicate very slowly When motor oil is lost e g by tubing breakagethe component temperature can no longer be conducted to the sensors

The lower limit value of oil pressure switches or sensors is set low (low oil pressure with themotor running at no load) At rated motor speed and with too little oil in the oil circuit an oil-airmixture may be produced without that a signal is put out The components are no longer

sufficiently cooled and lubricatedIn the two events described above the output signal is available either too late or even not atall so that the motor will be damaged The level monitoring system however indicates even

before the oil level becomes too low i e as soon as the oil level has fallen 10 to 20 mmbelow the minimum marking on the dipstick Oil pressure and oil temperature indication isalways ensured

Functional diagram

Installation instructions

1 Drain the motor oil

2 Secure the adjustable elbow coupling with the tubing and the sensor support at themotor The sensor housing should be adjustable through oblong holes to determine theminimum point

3 Install the ventilation for the crankcase (e g inspection hole cover)

4 Install and connect the sensor

5 Check for correct electrical function The minimum sensor must indicate now

6 Refill the oil up to the minimum marking on the dipstick

7 Move the sensor and support slowly down until the signal is no longer availableTheswitch point of the sensor is now exactly at the minimum oil level of the motor

8 Move the sensor down by another 10 to 20 mm and fix it The signal bdquooil level too lowldquowill now be put out when the level is approx 10 to 20 mm below the minimum markingon the dipstick

Legend Ref Nr

1 Tubing complete with 350 mm pipecoupling

421 660

Tubing complete with 450 mm pipe

coupling

421 661

Tubing complete with 550 mm pipecoupling

421 659

2 Sensor support 454 134

3 PA pipe available in meters 421 662

4 Level monitoring sensor

Oil MIN 9 - 36 V 421 595Oil MAX 9 - 36 V 421 599

5 withoutcable

withcable

Straight connector 421 672 421 67090deg connector 421 673 421 671

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page 24

Accessories

Plug Connection

1 Straight taper M 27 x 1 orstraight taper bayonet 16 S

2 Gripping seal-ring NW 103 Sleeve nut for NH9-1513

A A Tapered rubber ring must

point into the sleeve nutB B Tube polyflex NW 10Part-No 421 642 M 27 x 1

Part-No 421 672 Bayonet 16 S

Plug Connection

1 Taper M 27 x 1 90deg or

2 Tape 90deg bayonet 16 S3 Gripping seal-ring NW 10

A Tapered rubber ring mustpoint into the sleeve nut

B Tube polyflex NW 10

Part-No 421 643 M 27 x 1Part-No 421 673 Bayonet 16 S

Screw-in Adapter

Outside M 22 x 15Inside M 14 x 15

Part-No 421 640

Braze-in Adapter

Inside 14ldquo NPFTPart-No 421 641

Inside M 14 x 15Part-No 421 644

Cable and Plug

Connection for Probes Approved by Classifica-tion Societies

A Cablem Part-No 421 646

B Plug connectionPart-No 421 645

Plug connection fittedwith 2 m cablePart-No 421 647

Inside M 18 x 15

Part-No 421 648

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page 25

Control and Power Supply Unit 110220 V AC 1224 V DC Order No 421 650

Up to three probes can

be fed from this powersupply unit A relay 3 Amax with one normally

open and one normallyclosed contact is fittedwhich can be used for

additional control tasks A power supply unit isavailable for connection

to 220 V

The voltage for the

relay contacts must notbe taken from thepower supply unit

Housing plastic with control lamps MIN + MAX 110 x 75 x 65 _________________________________________________________________________Control Unit Best-Nr 421 651

for automatic filling and emptying of liquids This unit is designed to control two bdquominimumldquoprobes Probe 2 monitors the maximum liquid level probe 1 the minimum level An outputrelay with a change-over contact is switched automatically for external control tasks

Relays 1 and 2 are switched to conduct when the liquids falls below minimum level Whenthe liquid level reaches maximum relay circuits 1 and 2 are automatically interrupted

LED-display

bull no display liquid level above

bull maximum LED bdquomaximumldquo lights liquid Level is between maximum and minimum andis falling

bull Both LEDrsquos light liquid level is below minimum or is between minimum and maximumand is rising Contacts r1 and r2 are closed

Two bdquominimumldquo minus switching probes with built-in control function are used for this

control The self-control is only visible when both probes are immersed in liquid The signalappears for about 2 seconds when the power supply is switched onFor this period the output (contact r1 and r2) is conducting The voltage for the relay contacts

must not be taken from the power supply unit

Technical Data for Control Unit

Operating 110220 V AC or 1224 V DC Mounting position variable

Relay relay contact t 3 Amax

Temperature - 30 degC to + 75 degC

Protective system IP 54

Control Unit for filling or emptying

Housing plastic with control lamp 110 x 75 x 65 Part No 421 651

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page 26

Probes operating on the capacitive principle

This probe is self-adjustable and can be used for liquids including high viscosity media and

powders

Short description

This BEDIA-Level Sensor is suitable for liquids including high viscosity media and powdersIt operates on the principle of electrical capacitance changes arising when an electrodesurrounded by air is immersed in a media This capacitance change causes an electric

circuit to oscillate thus switching the output transistor off The use of latest state-of-the-arthybrid technology allows the probe and the electronic circuitry to be enclosed in a singlesealed unit

ApplicationThe BEDIA-Level Sensor with itrsquos large temperature range and wide sensitivity adjusting

range is suitable for a wide spread of applications process control petrochemical industrytank level monitoring bottle and crate washing systems in breweries etc

Operating modes

Minimum switching Normally the sensing probe is immersed and the green LED indicates

As the level drops below the probe the green LED extinguishes

Maximum switching Normally the sensing probe is not immersed and the green LED

indicates As the level rises above the probe the green LED extinguishes

Diagram of working method

7182019 BEDIA Level Monitoring

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page 27

Technical data

Circuit voltage 9 - 36 V DC Short circuit and overload

protectedPower consumption normal operation typ17 mA

fault operation typ10 mATime-delay typ01 sec

OutputTransistor plus switching 300 mA (500 mA short-time) short-circuit and overload proof with integral suppression diode

Terminal

configuration

max 1 mm2 screw terminals (AWG 17) Operating

temperature range

- 20degC to + 130degC

- 20degC to + 85degCMaterial - probe envelope PA 12-Gf

(polyamide with glass fibre)- fitting V2A (DIN 14305AISI 303)

- housing cover PA6-3-T (trogamide -transparent)

- O-ring FKM (viton)

Cable length max 300 m

Mounting plane horizontal (by preference Cable gland PG 7Max switchingpoint hysteresis

sensor diameter Mass ca 250 g

Cable automotive cable FLR 3 x 075 black Temp range -50degC to + 150degCBEDIA-part-no for cut goods 422 210

Dimensional diagram

A B BEDIA part no

G 34A 16mm 422 900

frac34ldquo NPT 21mm 422 901

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page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

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page 6

Accessories for probes with bayonet 16 S

421 672 Straight connector for bayonet 16 S for corrugated tubing NW10

421 673 90deg connector for bayonet 16 S for corrugated tubing NW 10421 772 Straight connector for bayonet 16 S with 56 mm cable sealing

421 773 90deg connector for bayonet 16 S with 56 cable sealing

421 670 Cable with connector 421 672 300 mm421 891 Cable with connector 421 772 1015 mm

421 018 Cable with connector 421 772 1300 mm

421 586 Cable with connector 421 772 3000 mm421 668 Cable with connector 421 673 300 mm421 671 Cable with connector 421 772 800 mm421 585 Cable with connector 421 773 1300 mm421 669 Cable with connector 421 773 5000 mm421 587 Cable with connector 421 773 10000 mm

Technical data see page 12 Installation instruction see page 13

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page 7

Probe with Cannon connector for bayonet 10 SL to VG0095342Environmental protection IP67 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Responsedelay

Aqueousliquids

Ref No

Oil and fuel

Ref No

AqueousliquidsRef No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec 421 403 421 504 421 505 421 506M 14 x 15 MAX 0 sec 0 sec ---- ---- 421 508 ----

M 14 x 15 MAX 0 sec 7 sec ---- ---- ---- 421 516M 18 x 15 MIN 2 sec 7 sec 422 512 422 513 421 500 421 501M 18 x 15 MIN 0 sec 0 sec ---- ---- ---- 421 514

M 18 x 15 MAX 2 sec 7 sec ---- 422 514 ---- ----M 18 x 15 MAX 0 sec 7 sec 421 989 421 990 421 502 421 503

M 18 x 15 MAX 0 sec 0 sec --- ---- ---- 421 509

14ldquo NPTF MIN 2 sec 7 sec 421 907 421 908 421 498 421 49914ldquo NPTF MAX 0 sec 7 sec ---- 421 909 ---- ----

12ldquo UNF MIN 2 sec 7 sec ---- 421 584 ---- ----

Accessories for probes with Cannon connector for bayonet 10 SL

421 652 Straight connector for bayonet 10 SL421 885 Straight connector for bayonet 10 SL 90deg

421 646 Cable with connector 3 x 1 with license for cut goods421 653 Cable with connector 421 652 2000 mm421 657 Cable with connector 421 652 5000 mm

421 648 Brazed adapter internal thread M 18 x 15

Technical data see page 12 Installation instruction see page 13

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page 8

Probes operating on the capacitive principleEnvironmental protection IP67 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Cable colour brown = +white = -

green = S

Cable colour brown = +white = -

green = S

Environmental protection IP67 DIN 40050 Signal output

minus potential

Signal output

plus potentialThread Monitoring

display

Integral

controlfunction

Monitoring

delay

Cable

lengthin mm

Cable

connec-tion type

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref NoM 12 x 1 MIN 0 sec 7 sec 1000 1 421 580 ---- ---- ----

M 14 x 15 MIN 2 sec 7 sec 190 1 418 152 421 991 425 016 425 017

M 14 x 15 MIN 2 sec 7 sec 190 8 421 927 421 928 ---- ----M 14 x 15 MIN 2 sec 7 sec 2000 1 ---- 421 929 ---- ----

M 14 x 15 MIN 2 sec 7 sec 250 5 ---- 421 072 ---- ----M 14 x 15 MIN 2 sec 7 sec 250 9 421 070 ---- ---- ----

M 14 x 15 MIN 2 sec 7 sec 250 3 ---- 422 525 ---- ----M 14 x 15 MAX 0 sec 7 sec 250 1 421 582 421 993 425 018 425 019M 14 x 15 MIN 0 sec 7 sec 2500 1 422 297 422 298 ---- ----

M 14 x 15 MAX 0 sec 3 sec 250 5 421 569 ---- ---- ----M 14 x 15 MAX 0 sec 7 sec 250 5 ---- 421 568 ---- ----

M 14 x 15 MIN 2 sec 7 sec 250 10 418 154 ---- ---- ----

M 14 x 15 MIN 0 sec 7 sec 550 3 422 506 422 507 ---- ----M 14 x 15 MIN 0 sec 2 sec 550 1 ---- 421 507 ---- ----

M 14 x 15 MAX 0 sec 0 sec 1000 1 ---- ---- 425 300 425 301M 14 x 15 MIN 2 sec 7 sec 300 6 421 601 421 621 ---- ----

M 14 x 15 MIN 0 sec 7 sec 300 6 421 583 ---- ---- ----

M 14 x 15 MIN 2 sec 3 sec 250 1 ---- 422 527 ---- ----() Probe suitable for brake fluid DOT3(1) Cable end without connector(2) Cable w ith 3 pole flat quick-connect terminations 63 in the housing(3) Cable with 3 pole DEUTSCH socket

(4) Cable with 3 pole round G amp H connector(5) Cable with 3 pole Reinshagen connector

(6) Probe with bayonet 16 S with separate cable 421 670 300 mm straight connector

(7) Probe with connector M 27 x 1 with 300 mm cable straight connector 421 642(8) Cable with 3 pole round AMP connector

(9) Cable with 3 flat quick-connect terminations 63 in single housing(10) Cable with 3 pole AMP connector 423 325 and strain relief

(11) Probe 422 524 like the probe 422 225 however with a monitoring of cable defect

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page 9

Environmental protection IP67 DIN 40050 Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Monitoringdelay

Cablelengthin mm

Cableconnec-tion type

Aqueousliquids

Ref No

Oil and fuel

Ref No

Aqueousliquids

Ref No

Oil and fuel

Ref No

M 18 x 15 MIN 2 sec 7 sec 1000 1 ---- 421 591 ---- ----

M 18 x 15 MIN 2 sec 7 sec 400 3 422 515 ---- ---- ----M 18 x 15 MAX 2 sec 7 sec 400 3 422 516 ---- ---- ----

M 18 x 15 MIN 2 sec 7 sec 250 2 422 503 422 504 425 020 425 021M 18 x 15 MAX 0 sec 7 sec 250 1 ---- ---- 425 022 425 023

M 18 x 15 MAX 0 sec 0 sec 1000 1 425 305 425 304 ---- ----

14ldquo NPTF MIN 0 sec 0 sec 250 1 421 566 421 567 ---- ----14ldquo NPTF MAX 0 sec 0 sec 2000 1 ---- ---- 425 030 ----14ldquo NPTF MIN 2 sec 7 sec 250 1 418 153 421 992 425 024 425 02514ldquo NPTF MAX 0 sec 7 sec 250 1 421 999 421 997 425 026 425 02714ldquo NPTF MAX 0 sec 7 sec 250 4 422 505 ---- ---- ----

14ldquo NPTF MIN 2 sec 7 sec 250 1 421 402 ---- ---- ----14ldquo NPTF MIN 2 sec 7 sec 550 3 422 225 422 226 ---- ----

14ldquo NPTF MIN 2 sec 7 sec 550 11 422 524 ---- ---- ----14ldquo NPTF MAX 0 sec 7 sec 550 3 422 521 422 522 425 302 ----

14ldquo NPTF MIN 2 sec 7 sec 300 6 421 605 421 625 ---- ----

14ldquo NPTF MIN 2 sec 7 sec 300 7 421 987 ---- ---- ----14ldquo NPTF MIN 0 sec 7 sec 550 3 ---- ---- ---- 425 303

38NPTF MAX 0 sec 7 sec 1000 1 ---- ---- ---- 425 031

R 38ldquo MAX 0 sec 7 sec 250 1 421 998 ---- ---- ----R 38ldquo MAX 0 sec 7 sec 250 3 422 286 ---- ---- ----

R 38ldquo MAX 0 sec 0 sec 360 3 ---- 421 510 ---- ----G 12 MIN 0 sec 0 sec 250 9 421 515 ---- ---- ----

G 1 MIN 2 sec 7 sec 250 1 425 307 ---- ---- ----Probe with the sensing point at 35 mm from sensor tip

R 38ldquo MAX 0 sec 7 sec 2000 1 422 523 ---- ---- ----G 1ldquo MAX 0 sec 7 sec 250 1 425 306 ---- ---- ----

() Probe suitable for brake fluid DOT3

(1) Cable end without connector(2) Cable with 3 pole flat quick-connect terminations 63 in the housing(3) Cable with 3 pole DEUTSCH socket(4) Cable with 3 pole round G amp H connector(5) Cable with 3 pole Reinshagen connector

(6) Probe with bayonet 16 S with separate cable 421 670 300 mm straight connector(7) Probe with connector M 27 x 1 with 300 mm cable straight connector 421 642

(8) Cable with 3 pole round AMP connector(9) Cable with 3 flat quick-connect terminations 63 in single housing

(10) Cable with 3 pole AMP connector 423 325 and strain relief

(11) Probe 422 524 like the probe 422 225 however with a monitoring of cable defect

Cable automotive cable FLR 3x075 black temp range - 50degC to +150degCTechnical data see page 12 Installation instruction see page 13

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page 10

Probe with connector DIN 72 585Environmental protection 69K DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Monitoringdelay

Aqueousliquids

Ref No

Oil and fuel

Ref No

Aqueousliquids

Ref No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec 420 400 420 431 420 401 420 432M 14 x 15 MIN 0 sec 7 sec ---- 420 446 ---- ----M 14 x 15 MIN 0 sec 2 sec 420 419 420 447 ---- 420 443M 14 x 15 MAX 0 sec 7 sec 420 402 420 433 420 403 420 434M 14 x 15 MAX 0 sec 0 sec ---- ---- 420 413 420 414

M 14 x 15 MIN 2 sec 60 min ---- 420 444 ---- ----

M 14 x 15 MIN 2 sec 60 sec ---- 420 449 ---- ----M 18 x 15 MIN 2 sec 7 sec 420 404 420 435 420 405 420 436

M 18 x 15 MIN 0 sec 7 sec 420 417 ---- ---- ----M 18 x 15 MAX 0 sec 7 sec 420 406 420 437 420 407 420 438

M 18 x 15 MAX 0 sec 0 sec ---- 420 430 ---- ----

R 38ldquo MAX 0 sec 7 sec 420 420 420 421 ---- ----G 38ldquo MAX 0 sec 0 sec ---- ---- ---- 420 448

14ldquo NPTF MIN 2 sec 7 sec 420 408 420 439 420 409 420 44014ldquo NPTF MIN 0 sec 7 sec 420 418 ---- ---- ----14ldquoNPTF MAX 0 sec 7 sec 420 410 420 441 420 411 420 442

14ldquoNPTF MIN 1 sec 17 sec 420 415 ---- ---- ----Probe with the sensing point 43mm from sensor tip

M 14 x 15 MIN 1 sec 17 sec 420 412

Accessories for probes with connector DIN 72585

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page 11

420 700 Straight connector for bayonet 16 S for corrugated tubing NW10

420 701 90deg connector for bayonet 16 S for corrugated tubing NW 10420 702 Connector 90deg for cable

420 703 Straight connector for cable420 704 Cable with connector 421 672 300 mm

420 705 Cable with connector 420 703 300 mm

420 706 Cable with connector 420 702 1000 mm420 707 Cable with connector 420 703 1000 mm

420 708 Cable with connector 420 702 3000 mm

Technical data see page 12 Installation instruction see page 13

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page 12

Probe with connector DIN 43 650

Environmental protection 65 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal output

minus potential

Signal output

plus potentialThread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref NoM 14 x 15 MIN 2 sec 7 sec 420 600 420 620 420 601 420 621

M 14 x 15 MAX 0 sec 7 sec 420 602 420 622 420 603 420 623M 18 x 15 MIN 2 sec 7 sec 420 604 420 624 420 605 420 625M 18 x 15 MAX 0 sec 7 sec 420 606 420 626 420 607 420 62714ldquo NPTF MIN 2 sec 7 sec 420 608 420 628 420 609 420 62914ldquoNPTF MAX 0 sec 7 sec 420 610 420 630 420 611 420 631

R 38ldquo MAX 0 sec 0 sec ---- ---- ---- 420 650

Accessories for probes with connector

421 880 connector M3x35 to DIN 43 650

Technical data see page 12 Installation instruction see page 13

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page 13

Technical data for minimum and maximum probes

Operating voltage 12V-24V (-25+50)

Output current 1 A over the whole operating voltage range

Short-circuit and overload protected overt the entire temperature range

At minus switching probes the minus potential is switched through At plus switching probes the plus potential is switched through

Sensing point 18 mm +- 6 mm

Closed-circuit current consumption approx 6 mA

Voltage spikes 70 V dropping to Un in 270 ns

Medium temperature Water - 30degC to + 110degC

Oil - 30degC to + 125degC

Ambient temperature - 30degC to + 100degC

Storage temperature - 50degC to + 125degC

Response delay see table

Integral control function see table

Shock resistance 50 g half-sine 11 ms

Pressure on sensor up to 25 bar3675 PSI

Reverse polarity protection in-built between plus and minus terminal

Mounting attitude optional

Housing brass CuZn39Pb3

capacitively connected to frame

Weight approx 125 g

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or plus

potential to the minus terminal as otherwise the probes may be destroyed- Plus switching probes Do not connect plus potential to the signal terminal or minus

potential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

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page 14

Installation Instruction for BEDIA Level Monitoring Probes

BEDIA Level Monitoring Probes may be installed in any attitude

Please observe the following instructions when installing the probe

1 To prevent false indication install the probe in a smooth area where it is not affected bysplashing media as may be the case when it is installed in a gear unit or directly in the

motor oil sump

2 To prevent false indication install the sensor at least 15mm from the wall away

Only for water - sensors

3 False indication may also occur if the sensor is mounted from above in a plasticcontainer with the medium carrying no potential In all other mounting attitudes the

housing will be in contact with the medium so as to ensure potential is available

4 Connection Diagram

Minus switching probes Plus switching probes

5 Connection of the cables free wheeling diode

Bayonet 16SThread M27x1

Bayonet 10SL Bayonet DIN 72585Bayonet DIN 43650

Cable

+ A 1 Brown

- B 2 White

S C 3 Green

sensor

wall

gt15mm

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page 15

Probe with bayonet 10 SL to VG 0095342Environmental protection 67 DIN 40050

Probe suitable for aqueous media Connection diagram

Signal outputminus potential

Signal outputplus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref No

M 18 x 15 MIN 1 sec 3 sec 421 903 421 950 421 470 421 471

M 18 x 15 MAX 1 sec 3 sec 421 951 421 952 421 472 421 473M 18 x 15 MIN 2 sec 7 sec ---- 421 984 ---- ----

M 18 x 15 MAX 0 sec 7 sec ---- 421 990 ---- ----

Probe with bayonet 10 SL to VG 0095342

Probe suitable for aqueous media

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Function-control

Integralcontrolfunction

Monitoringdelay

Aqueousliquids

Ref No

Oil and fueRef No

Aqueousliquids

Ref No

Oil and fueRef No

M 18 x 15 MIN 1 sec 3 sec 200 421 906 421 957 421 478 421 479M 18 x 15 MAX 1 sec 3 sec 200 421 958 421 959 421 480 421 481M 18 x 15 MIN 1 sec 3 sec 450 421 960 ---- ---- ----

Accessories for probes with connector Cannon for bajonet 10 SL

421 652 Straight connector for bayonet 10 SL

421 885 Straight connector for bayonet 10 SL421 646 Cable with connector 3 x 1 with license for cut goods

421 653 Cable with connector 421 652 2000 mm

421 657 Cable with connector 421 652 5000 mm421 648 Brazed adapter internal thread M 18 x 15

Technical data see following pages

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page 16

Technical data for minimum and maximum probes

Mechanical dataHousing stainless non-magneticThread M18x15 max tightening torque 30 NmSealing ring (not supplied with the system) 18x22 DIN 7603-CUFitting Cu-Zn alloy material No 20401

Connection see table to VG 0095342Isolation of sensor Tefzel ETFE

Marking function type number manufacturing date voltageMounting attitude optional immersion depth horizontal approx 3 mm plusmn 2 mm

immersion depth vertical approx 20 mm plusmn 6 mmMass approx 200 g Ambient temperature - 30degC to + 125degC

Storage temperature - 55degC to + 125degCMedium temperature - 30degC to + 125degCSinusoidal vibration (peak) 2 - 25 Hz 16mm amplitude

25 - 420 Hz 4 g amplitude

420 - 1330 Hz 5 g amplitude1330 - 2700 Hz 10 g amplitude2700 - 5000 Hz 25 g amplitude

Relative humidity up to 100

Environment Shock (peak)

50 g half-sine 11 ms

EMC IEC 801 (1-4) lt 500 mV rmsdepending on cables

EMC to VG 95373 only with external filterInterference suppression to VDE0871 limit B

Pressure on sensor max 25 bar3675 PSIMedia to be monitored water cooling water seawater oil fuel hydraulic oil

brake fluidDependability The performance is not impaired by small deposits on

the probe

Electric data Protection against reversepolarity

Voltage spikes

between UB and frame

70 V dropping to UN in270

Voltage rating 9 - 36 V Hysteresis of response max plusmn 5 mm aroundthe sensing point

Output open collector switchingminus potential

Response time - bdquolevelacceptableldquo

typically 1 s (05 s to15 s)

Closed-circuit current at24 V

lt 10 mA Response time - bdquolevelunacceptableldquo

Recovery time

typically 3 s (1 s to 4 s)

lt 2 s

Power consumption closed-circuit current plus

switching current

Integral control function see table

Switching capacity max 1 A continuous currentin the voltage range indicated

Terminal connection A = + UB B = - UB C = output signal

Load resistive and inductive Potential of housing

Dielectric strength

physically isolated fromplus UB and minus UB

VDE

0100500 VDC 1 minLoad inductance 500 mH Insulation resistance VDE 0160500 VAC50

Hz 1 minDielectric resistance gt 10 M Ohm

Voltage through lt 0 5 V

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or pluspotential to the minus terminal as otherwise the probes may be destroyed

- Plus switching probes Do not connect plus potential to the signal terminal or minuspotential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

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page 17

Probes operating on the capacitive principle Ex approvedEnvironmental protection 65 DIN 40050

Probe suitable for aqueousmedia

Probe suitable for oil and fuel

Certificate of ConformityEN 50014-1977 + A1 - A5 (VDE 01700171 Part 1187) General requirementsEN 50020-1977 + A1 - A2 (VDE 01700171 Part 7187) intrinsic safety bdquoIldquo

EEx Ia I

Probe for mining applications

Signal outputMinus potential

ThreadMonitoring

displayIntegralcontrolfunction

Monitoringdelay

Voltage (voltDC)

Aqueous liquids

Ref No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec DC 9-13 V 421 934 421 936M 14 x 15 MAX 2 sec 7 sec DC 9-13 V 421 935 421 937M 18 x 15 MIN 2 sec 7 sec DC 9-13 V 421 930 421 932

M 18 x 15 MAX 2 sec 7 sec DC 9-13 V 421 931 421 93314ldquo NPTF MIN 2 sec 7 sec DC 9-13 V 421 938 421 940

14ldquo NPTF MAX 2 sec 7 sec DC 9-13 V 421 939 421 941

UB+ = Brown

Minus = WhiteSignal = Green

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page 18

Technical data for minimum and maximum probes

Operating voltage 9 - 13 V DC

Closed-circuit current consumption approx 6 mA

Sensing point 20 mm plusmn 6 mm from sensor tip

Power output at the signal output open collector Should be limited to max 20 mA

by the user

Storage temperature - 30degC to +125degCOperating temperature - 30degC to +125degC

Fault indicating delay approx 7 sec

Integral control function approx 2 sec

Shock 50 g half-sine 11 ms

Vibration to GL requirements for type certified tests

Admissible pressure on sensor 5 bar735 PSI

Environmental protection IP 65

Protection against reverse polarity in-built between plus and minus terminal

Mounting attitude horizontal preferred

Housing brass CuZn39Pb3

Sensor coating ETFE Tefzelreg

Weight with 10 m cable approx 800 g

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page 19

Certificate of Conformity BVS 94C1001

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page 20

Certificate of Conformity BVS 94C1001

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page 21

Conductivity probeEnvironmental protection 65 DIN 40050

Probe suitable for aqueous media

Conductivity probe with bayonet 16 S

Signal outputMinus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous liquids

Ref No

M 14 x 15 MIN 2 sec 7 sec 422 200

M 14 x 15 MAX 2 sec 7 sec 422 201

14ldquo NPTF MIN 2 sec 7 sec 422 20414ldquo NPTF MAX 2 sec 7 sec 422 205

Accessories for probes with bayonet 16 S

421 672 Straight connector for bayonet 16 S for corrugated tubing NW 10421 673 90deg connector for bayonet 16 S for corrugated tubing NW 10421 772 Straight connector for bayonet 16 S with 56 mm cable sealing421 773 90deg connector for bayonet 16 S with 56 mm cable sealing

421 670 Cable with connector 421 672 300 mm

421 018 Cable with connector 421 772 1015 mm421 586 Cable with connector 421 772 1300 mm

421 668 Cable with connector 421 772 3000 mm421 671 Cable with connector 421 673 300 mm

421 891 Cable with connector 421 773 800 mm

421 585 Cable with connector 421 773 1300 mm

421 669 Cable with connector 421 773 5000 mm

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page 22

Technical Data for minimum and maximum probes

Voltage rating DC 16 - 32 V

Power consumption typically 7 mA

Switching capacity 3 W (resistive load)

Output minus switching

Voltage drop approx 35 V with 3 W lamp load

Load dump protection 70 V 270 ns

Protection from fault conditions to VDE 0939

Lamp test in-built (approx 3 s)

Fault indicating delay approx 7 s

Free-wheeling diode Inductive loads A free wheeling diode eg 1N4007 has to bemounted at the load

Protection against reverse polarity in-built between plus and minus terminalObserve correct connection of plus and signal terminals

Operating temperature - 40degC to + 120degC

Storage temperature - 40degC to + 120degC

Admissible pressure on sensor 2 bar

Max tightening torque on thread 30 Nm

Mounting attitude optional

Housing brass MS CuZnPb3nickel-plated potential-free

Sensor coating Tefzel

983214

ETFE

Sensor brass MS CuZn39Pb3(immersed in the medium)

Weight approx 100 g

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page 23

Level monitoring in the oil sump

Which are the benefits of a level monitoring system in the oil sump over conventional

pressure and temperature sensorsTemperature sensors indicate very slowly When motor oil is lost e g by tubing breakagethe component temperature can no longer be conducted to the sensors

The lower limit value of oil pressure switches or sensors is set low (low oil pressure with themotor running at no load) At rated motor speed and with too little oil in the oil circuit an oil-airmixture may be produced without that a signal is put out The components are no longer

sufficiently cooled and lubricatedIn the two events described above the output signal is available either too late or even not atall so that the motor will be damaged The level monitoring system however indicates even

before the oil level becomes too low i e as soon as the oil level has fallen 10 to 20 mmbelow the minimum marking on the dipstick Oil pressure and oil temperature indication isalways ensured

Functional diagram

Installation instructions

1 Drain the motor oil

2 Secure the adjustable elbow coupling with the tubing and the sensor support at themotor The sensor housing should be adjustable through oblong holes to determine theminimum point

3 Install the ventilation for the crankcase (e g inspection hole cover)

4 Install and connect the sensor

5 Check for correct electrical function The minimum sensor must indicate now

6 Refill the oil up to the minimum marking on the dipstick

7 Move the sensor and support slowly down until the signal is no longer availableTheswitch point of the sensor is now exactly at the minimum oil level of the motor

8 Move the sensor down by another 10 to 20 mm and fix it The signal bdquooil level too lowldquowill now be put out when the level is approx 10 to 20 mm below the minimum markingon the dipstick

Legend Ref Nr

1 Tubing complete with 350 mm pipecoupling

421 660

Tubing complete with 450 mm pipe

coupling

421 661

Tubing complete with 550 mm pipecoupling

421 659

2 Sensor support 454 134

3 PA pipe available in meters 421 662

4 Level monitoring sensor

Oil MIN 9 - 36 V 421 595Oil MAX 9 - 36 V 421 599

5 withoutcable

withcable

Straight connector 421 672 421 67090deg connector 421 673 421 671

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page 24

Accessories

Plug Connection

1 Straight taper M 27 x 1 orstraight taper bayonet 16 S

2 Gripping seal-ring NW 103 Sleeve nut for NH9-1513

A A Tapered rubber ring must

point into the sleeve nutB B Tube polyflex NW 10Part-No 421 642 M 27 x 1

Part-No 421 672 Bayonet 16 S

Plug Connection

1 Taper M 27 x 1 90deg or

2 Tape 90deg bayonet 16 S3 Gripping seal-ring NW 10

A Tapered rubber ring mustpoint into the sleeve nut

B Tube polyflex NW 10

Part-No 421 643 M 27 x 1Part-No 421 673 Bayonet 16 S

Screw-in Adapter

Outside M 22 x 15Inside M 14 x 15

Part-No 421 640

Braze-in Adapter

Inside 14ldquo NPFTPart-No 421 641

Inside M 14 x 15Part-No 421 644

Cable and Plug

Connection for Probes Approved by Classifica-tion Societies

A Cablem Part-No 421 646

B Plug connectionPart-No 421 645

Plug connection fittedwith 2 m cablePart-No 421 647

Inside M 18 x 15

Part-No 421 648

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page 25

Control and Power Supply Unit 110220 V AC 1224 V DC Order No 421 650

Up to three probes can

be fed from this powersupply unit A relay 3 Amax with one normally

open and one normallyclosed contact is fittedwhich can be used for

additional control tasks A power supply unit isavailable for connection

to 220 V

The voltage for the

relay contacts must notbe taken from thepower supply unit

Housing plastic with control lamps MIN + MAX 110 x 75 x 65 _________________________________________________________________________Control Unit Best-Nr 421 651

for automatic filling and emptying of liquids This unit is designed to control two bdquominimumldquoprobes Probe 2 monitors the maximum liquid level probe 1 the minimum level An outputrelay with a change-over contact is switched automatically for external control tasks

Relays 1 and 2 are switched to conduct when the liquids falls below minimum level Whenthe liquid level reaches maximum relay circuits 1 and 2 are automatically interrupted

LED-display

bull no display liquid level above

bull maximum LED bdquomaximumldquo lights liquid Level is between maximum and minimum andis falling

bull Both LEDrsquos light liquid level is below minimum or is between minimum and maximumand is rising Contacts r1 and r2 are closed

Two bdquominimumldquo minus switching probes with built-in control function are used for this

control The self-control is only visible when both probes are immersed in liquid The signalappears for about 2 seconds when the power supply is switched onFor this period the output (contact r1 and r2) is conducting The voltage for the relay contacts

must not be taken from the power supply unit

Technical Data for Control Unit

Operating 110220 V AC or 1224 V DC Mounting position variable

Relay relay contact t 3 Amax

Temperature - 30 degC to + 75 degC

Protective system IP 54

Control Unit for filling or emptying

Housing plastic with control lamp 110 x 75 x 65 Part No 421 651

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page 26

Probes operating on the capacitive principle

This probe is self-adjustable and can be used for liquids including high viscosity media and

powders

Short description

This BEDIA-Level Sensor is suitable for liquids including high viscosity media and powdersIt operates on the principle of electrical capacitance changes arising when an electrodesurrounded by air is immersed in a media This capacitance change causes an electric

circuit to oscillate thus switching the output transistor off The use of latest state-of-the-arthybrid technology allows the probe and the electronic circuitry to be enclosed in a singlesealed unit

ApplicationThe BEDIA-Level Sensor with itrsquos large temperature range and wide sensitivity adjusting

range is suitable for a wide spread of applications process control petrochemical industrytank level monitoring bottle and crate washing systems in breweries etc

Operating modes

Minimum switching Normally the sensing probe is immersed and the green LED indicates

As the level drops below the probe the green LED extinguishes

Maximum switching Normally the sensing probe is not immersed and the green LED

indicates As the level rises above the probe the green LED extinguishes

Diagram of working method

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page 27

Technical data

Circuit voltage 9 - 36 V DC Short circuit and overload

protectedPower consumption normal operation typ17 mA

fault operation typ10 mATime-delay typ01 sec

OutputTransistor plus switching 300 mA (500 mA short-time) short-circuit and overload proof with integral suppression diode

Terminal

configuration

max 1 mm2 screw terminals (AWG 17) Operating

temperature range

- 20degC to + 130degC

- 20degC to + 85degCMaterial - probe envelope PA 12-Gf

(polyamide with glass fibre)- fitting V2A (DIN 14305AISI 303)

- housing cover PA6-3-T (trogamide -transparent)

- O-ring FKM (viton)

Cable length max 300 m

Mounting plane horizontal (by preference Cable gland PG 7Max switchingpoint hysteresis

sensor diameter Mass ca 250 g

Cable automotive cable FLR 3 x 075 black Temp range -50degC to + 150degCBEDIA-part-no for cut goods 422 210

Dimensional diagram

A B BEDIA part no

G 34A 16mm 422 900

frac34ldquo NPT 21mm 422 901

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page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

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page 7

Probe with Cannon connector for bayonet 10 SL to VG0095342Environmental protection IP67 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Responsedelay

Aqueousliquids

Ref No

Oil and fuel

Ref No

AqueousliquidsRef No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec 421 403 421 504 421 505 421 506M 14 x 15 MAX 0 sec 0 sec ---- ---- 421 508 ----

M 14 x 15 MAX 0 sec 7 sec ---- ---- ---- 421 516M 18 x 15 MIN 2 sec 7 sec 422 512 422 513 421 500 421 501M 18 x 15 MIN 0 sec 0 sec ---- ---- ---- 421 514

M 18 x 15 MAX 2 sec 7 sec ---- 422 514 ---- ----M 18 x 15 MAX 0 sec 7 sec 421 989 421 990 421 502 421 503

M 18 x 15 MAX 0 sec 0 sec --- ---- ---- 421 509

14ldquo NPTF MIN 2 sec 7 sec 421 907 421 908 421 498 421 49914ldquo NPTF MAX 0 sec 7 sec ---- 421 909 ---- ----

12ldquo UNF MIN 2 sec 7 sec ---- 421 584 ---- ----

Accessories for probes with Cannon connector for bayonet 10 SL

421 652 Straight connector for bayonet 10 SL421 885 Straight connector for bayonet 10 SL 90deg

421 646 Cable with connector 3 x 1 with license for cut goods421 653 Cable with connector 421 652 2000 mm421 657 Cable with connector 421 652 5000 mm

421 648 Brazed adapter internal thread M 18 x 15

Technical data see page 12 Installation instruction see page 13

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page 8

Probes operating on the capacitive principleEnvironmental protection IP67 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Cable colour brown = +white = -

green = S

Cable colour brown = +white = -

green = S

Environmental protection IP67 DIN 40050 Signal output

minus potential

Signal output

plus potentialThread Monitoring

display

Integral

controlfunction

Monitoring

delay

Cable

lengthin mm

Cable

connec-tion type

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref NoM 12 x 1 MIN 0 sec 7 sec 1000 1 421 580 ---- ---- ----

M 14 x 15 MIN 2 sec 7 sec 190 1 418 152 421 991 425 016 425 017

M 14 x 15 MIN 2 sec 7 sec 190 8 421 927 421 928 ---- ----M 14 x 15 MIN 2 sec 7 sec 2000 1 ---- 421 929 ---- ----

M 14 x 15 MIN 2 sec 7 sec 250 5 ---- 421 072 ---- ----M 14 x 15 MIN 2 sec 7 sec 250 9 421 070 ---- ---- ----

M 14 x 15 MIN 2 sec 7 sec 250 3 ---- 422 525 ---- ----M 14 x 15 MAX 0 sec 7 sec 250 1 421 582 421 993 425 018 425 019M 14 x 15 MIN 0 sec 7 sec 2500 1 422 297 422 298 ---- ----

M 14 x 15 MAX 0 sec 3 sec 250 5 421 569 ---- ---- ----M 14 x 15 MAX 0 sec 7 sec 250 5 ---- 421 568 ---- ----

M 14 x 15 MIN 2 sec 7 sec 250 10 418 154 ---- ---- ----

M 14 x 15 MIN 0 sec 7 sec 550 3 422 506 422 507 ---- ----M 14 x 15 MIN 0 sec 2 sec 550 1 ---- 421 507 ---- ----

M 14 x 15 MAX 0 sec 0 sec 1000 1 ---- ---- 425 300 425 301M 14 x 15 MIN 2 sec 7 sec 300 6 421 601 421 621 ---- ----

M 14 x 15 MIN 0 sec 7 sec 300 6 421 583 ---- ---- ----

M 14 x 15 MIN 2 sec 3 sec 250 1 ---- 422 527 ---- ----() Probe suitable for brake fluid DOT3(1) Cable end without connector(2) Cable w ith 3 pole flat quick-connect terminations 63 in the housing(3) Cable with 3 pole DEUTSCH socket

(4) Cable with 3 pole round G amp H connector(5) Cable with 3 pole Reinshagen connector

(6) Probe with bayonet 16 S with separate cable 421 670 300 mm straight connector

(7) Probe with connector M 27 x 1 with 300 mm cable straight connector 421 642(8) Cable with 3 pole round AMP connector

(9) Cable with 3 flat quick-connect terminations 63 in single housing(10) Cable with 3 pole AMP connector 423 325 and strain relief

(11) Probe 422 524 like the probe 422 225 however with a monitoring of cable defect

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page 9

Environmental protection IP67 DIN 40050 Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Monitoringdelay

Cablelengthin mm

Cableconnec-tion type

Aqueousliquids

Ref No

Oil and fuel

Ref No

Aqueousliquids

Ref No

Oil and fuel

Ref No

M 18 x 15 MIN 2 sec 7 sec 1000 1 ---- 421 591 ---- ----

M 18 x 15 MIN 2 sec 7 sec 400 3 422 515 ---- ---- ----M 18 x 15 MAX 2 sec 7 sec 400 3 422 516 ---- ---- ----

M 18 x 15 MIN 2 sec 7 sec 250 2 422 503 422 504 425 020 425 021M 18 x 15 MAX 0 sec 7 sec 250 1 ---- ---- 425 022 425 023

M 18 x 15 MAX 0 sec 0 sec 1000 1 425 305 425 304 ---- ----

14ldquo NPTF MIN 0 sec 0 sec 250 1 421 566 421 567 ---- ----14ldquo NPTF MAX 0 sec 0 sec 2000 1 ---- ---- 425 030 ----14ldquo NPTF MIN 2 sec 7 sec 250 1 418 153 421 992 425 024 425 02514ldquo NPTF MAX 0 sec 7 sec 250 1 421 999 421 997 425 026 425 02714ldquo NPTF MAX 0 sec 7 sec 250 4 422 505 ---- ---- ----

14ldquo NPTF MIN 2 sec 7 sec 250 1 421 402 ---- ---- ----14ldquo NPTF MIN 2 sec 7 sec 550 3 422 225 422 226 ---- ----

14ldquo NPTF MIN 2 sec 7 sec 550 11 422 524 ---- ---- ----14ldquo NPTF MAX 0 sec 7 sec 550 3 422 521 422 522 425 302 ----

14ldquo NPTF MIN 2 sec 7 sec 300 6 421 605 421 625 ---- ----

14ldquo NPTF MIN 2 sec 7 sec 300 7 421 987 ---- ---- ----14ldquo NPTF MIN 0 sec 7 sec 550 3 ---- ---- ---- 425 303

38NPTF MAX 0 sec 7 sec 1000 1 ---- ---- ---- 425 031

R 38ldquo MAX 0 sec 7 sec 250 1 421 998 ---- ---- ----R 38ldquo MAX 0 sec 7 sec 250 3 422 286 ---- ---- ----

R 38ldquo MAX 0 sec 0 sec 360 3 ---- 421 510 ---- ----G 12 MIN 0 sec 0 sec 250 9 421 515 ---- ---- ----

G 1 MIN 2 sec 7 sec 250 1 425 307 ---- ---- ----Probe with the sensing point at 35 mm from sensor tip

R 38ldquo MAX 0 sec 7 sec 2000 1 422 523 ---- ---- ----G 1ldquo MAX 0 sec 7 sec 250 1 425 306 ---- ---- ----

() Probe suitable for brake fluid DOT3

(1) Cable end without connector(2) Cable with 3 pole flat quick-connect terminations 63 in the housing(3) Cable with 3 pole DEUTSCH socket(4) Cable with 3 pole round G amp H connector(5) Cable with 3 pole Reinshagen connector

(6) Probe with bayonet 16 S with separate cable 421 670 300 mm straight connector(7) Probe with connector M 27 x 1 with 300 mm cable straight connector 421 642

(8) Cable with 3 pole round AMP connector(9) Cable with 3 flat quick-connect terminations 63 in single housing

(10) Cable with 3 pole AMP connector 423 325 and strain relief

(11) Probe 422 524 like the probe 422 225 however with a monitoring of cable defect

Cable automotive cable FLR 3x075 black temp range - 50degC to +150degCTechnical data see page 12 Installation instruction see page 13

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page 10

Probe with connector DIN 72 585Environmental protection 69K DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Monitoringdelay

Aqueousliquids

Ref No

Oil and fuel

Ref No

Aqueousliquids

Ref No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec 420 400 420 431 420 401 420 432M 14 x 15 MIN 0 sec 7 sec ---- 420 446 ---- ----M 14 x 15 MIN 0 sec 2 sec 420 419 420 447 ---- 420 443M 14 x 15 MAX 0 sec 7 sec 420 402 420 433 420 403 420 434M 14 x 15 MAX 0 sec 0 sec ---- ---- 420 413 420 414

M 14 x 15 MIN 2 sec 60 min ---- 420 444 ---- ----

M 14 x 15 MIN 2 sec 60 sec ---- 420 449 ---- ----M 18 x 15 MIN 2 sec 7 sec 420 404 420 435 420 405 420 436

M 18 x 15 MIN 0 sec 7 sec 420 417 ---- ---- ----M 18 x 15 MAX 0 sec 7 sec 420 406 420 437 420 407 420 438

M 18 x 15 MAX 0 sec 0 sec ---- 420 430 ---- ----

R 38ldquo MAX 0 sec 7 sec 420 420 420 421 ---- ----G 38ldquo MAX 0 sec 0 sec ---- ---- ---- 420 448

14ldquo NPTF MIN 2 sec 7 sec 420 408 420 439 420 409 420 44014ldquo NPTF MIN 0 sec 7 sec 420 418 ---- ---- ----14ldquoNPTF MAX 0 sec 7 sec 420 410 420 441 420 411 420 442

14ldquoNPTF MIN 1 sec 17 sec 420 415 ---- ---- ----Probe with the sensing point 43mm from sensor tip

M 14 x 15 MIN 1 sec 17 sec 420 412

Accessories for probes with connector DIN 72585

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page 11

420 700 Straight connector for bayonet 16 S for corrugated tubing NW10

420 701 90deg connector for bayonet 16 S for corrugated tubing NW 10420 702 Connector 90deg for cable

420 703 Straight connector for cable420 704 Cable with connector 421 672 300 mm

420 705 Cable with connector 420 703 300 mm

420 706 Cable with connector 420 702 1000 mm420 707 Cable with connector 420 703 1000 mm

420 708 Cable with connector 420 702 3000 mm

Technical data see page 12 Installation instruction see page 13

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page 12

Probe with connector DIN 43 650

Environmental protection 65 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal output

minus potential

Signal output

plus potentialThread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref NoM 14 x 15 MIN 2 sec 7 sec 420 600 420 620 420 601 420 621

M 14 x 15 MAX 0 sec 7 sec 420 602 420 622 420 603 420 623M 18 x 15 MIN 2 sec 7 sec 420 604 420 624 420 605 420 625M 18 x 15 MAX 0 sec 7 sec 420 606 420 626 420 607 420 62714ldquo NPTF MIN 2 sec 7 sec 420 608 420 628 420 609 420 62914ldquoNPTF MAX 0 sec 7 sec 420 610 420 630 420 611 420 631

R 38ldquo MAX 0 sec 0 sec ---- ---- ---- 420 650

Accessories for probes with connector

421 880 connector M3x35 to DIN 43 650

Technical data see page 12 Installation instruction see page 13

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page 13

Technical data for minimum and maximum probes

Operating voltage 12V-24V (-25+50)

Output current 1 A over the whole operating voltage range

Short-circuit and overload protected overt the entire temperature range

At minus switching probes the minus potential is switched through At plus switching probes the plus potential is switched through

Sensing point 18 mm +- 6 mm

Closed-circuit current consumption approx 6 mA

Voltage spikes 70 V dropping to Un in 270 ns

Medium temperature Water - 30degC to + 110degC

Oil - 30degC to + 125degC

Ambient temperature - 30degC to + 100degC

Storage temperature - 50degC to + 125degC

Response delay see table

Integral control function see table

Shock resistance 50 g half-sine 11 ms

Pressure on sensor up to 25 bar3675 PSI

Reverse polarity protection in-built between plus and minus terminal

Mounting attitude optional

Housing brass CuZn39Pb3

capacitively connected to frame

Weight approx 125 g

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or plus

potential to the minus terminal as otherwise the probes may be destroyed- Plus switching probes Do not connect plus potential to the signal terminal or minus

potential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

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page 14

Installation Instruction for BEDIA Level Monitoring Probes

BEDIA Level Monitoring Probes may be installed in any attitude

Please observe the following instructions when installing the probe

1 To prevent false indication install the probe in a smooth area where it is not affected bysplashing media as may be the case when it is installed in a gear unit or directly in the

motor oil sump

2 To prevent false indication install the sensor at least 15mm from the wall away

Only for water - sensors

3 False indication may also occur if the sensor is mounted from above in a plasticcontainer with the medium carrying no potential In all other mounting attitudes the

housing will be in contact with the medium so as to ensure potential is available

4 Connection Diagram

Minus switching probes Plus switching probes

5 Connection of the cables free wheeling diode

Bayonet 16SThread M27x1

Bayonet 10SL Bayonet DIN 72585Bayonet DIN 43650

Cable

+ A 1 Brown

- B 2 White

S C 3 Green

sensor

wall

gt15mm

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page 15

Probe with bayonet 10 SL to VG 0095342Environmental protection 67 DIN 40050

Probe suitable for aqueous media Connection diagram

Signal outputminus potential

Signal outputplus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref No

M 18 x 15 MIN 1 sec 3 sec 421 903 421 950 421 470 421 471

M 18 x 15 MAX 1 sec 3 sec 421 951 421 952 421 472 421 473M 18 x 15 MIN 2 sec 7 sec ---- 421 984 ---- ----

M 18 x 15 MAX 0 sec 7 sec ---- 421 990 ---- ----

Probe with bayonet 10 SL to VG 0095342

Probe suitable for aqueous media

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Function-control

Integralcontrolfunction

Monitoringdelay

Aqueousliquids

Ref No

Oil and fueRef No

Aqueousliquids

Ref No

Oil and fueRef No

M 18 x 15 MIN 1 sec 3 sec 200 421 906 421 957 421 478 421 479M 18 x 15 MAX 1 sec 3 sec 200 421 958 421 959 421 480 421 481M 18 x 15 MIN 1 sec 3 sec 450 421 960 ---- ---- ----

Accessories for probes with connector Cannon for bajonet 10 SL

421 652 Straight connector for bayonet 10 SL

421 885 Straight connector for bayonet 10 SL421 646 Cable with connector 3 x 1 with license for cut goods

421 653 Cable with connector 421 652 2000 mm

421 657 Cable with connector 421 652 5000 mm421 648 Brazed adapter internal thread M 18 x 15

Technical data see following pages

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page 16

Technical data for minimum and maximum probes

Mechanical dataHousing stainless non-magneticThread M18x15 max tightening torque 30 NmSealing ring (not supplied with the system) 18x22 DIN 7603-CUFitting Cu-Zn alloy material No 20401

Connection see table to VG 0095342Isolation of sensor Tefzel ETFE

Marking function type number manufacturing date voltageMounting attitude optional immersion depth horizontal approx 3 mm plusmn 2 mm

immersion depth vertical approx 20 mm plusmn 6 mmMass approx 200 g Ambient temperature - 30degC to + 125degC

Storage temperature - 55degC to + 125degCMedium temperature - 30degC to + 125degCSinusoidal vibration (peak) 2 - 25 Hz 16mm amplitude

25 - 420 Hz 4 g amplitude

420 - 1330 Hz 5 g amplitude1330 - 2700 Hz 10 g amplitude2700 - 5000 Hz 25 g amplitude

Relative humidity up to 100

Environment Shock (peak)

50 g half-sine 11 ms

EMC IEC 801 (1-4) lt 500 mV rmsdepending on cables

EMC to VG 95373 only with external filterInterference suppression to VDE0871 limit B

Pressure on sensor max 25 bar3675 PSIMedia to be monitored water cooling water seawater oil fuel hydraulic oil

brake fluidDependability The performance is not impaired by small deposits on

the probe

Electric data Protection against reversepolarity

Voltage spikes

between UB and frame

70 V dropping to UN in270

Voltage rating 9 - 36 V Hysteresis of response max plusmn 5 mm aroundthe sensing point

Output open collector switchingminus potential

Response time - bdquolevelacceptableldquo

typically 1 s (05 s to15 s)

Closed-circuit current at24 V

lt 10 mA Response time - bdquolevelunacceptableldquo

Recovery time

typically 3 s (1 s to 4 s)

lt 2 s

Power consumption closed-circuit current plus

switching current

Integral control function see table

Switching capacity max 1 A continuous currentin the voltage range indicated

Terminal connection A = + UB B = - UB C = output signal

Load resistive and inductive Potential of housing

Dielectric strength

physically isolated fromplus UB and minus UB

VDE

0100500 VDC 1 minLoad inductance 500 mH Insulation resistance VDE 0160500 VAC50

Hz 1 minDielectric resistance gt 10 M Ohm

Voltage through lt 0 5 V

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or pluspotential to the minus terminal as otherwise the probes may be destroyed

- Plus switching probes Do not connect plus potential to the signal terminal or minuspotential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

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page 17

Probes operating on the capacitive principle Ex approvedEnvironmental protection 65 DIN 40050

Probe suitable for aqueousmedia

Probe suitable for oil and fuel

Certificate of ConformityEN 50014-1977 + A1 - A5 (VDE 01700171 Part 1187) General requirementsEN 50020-1977 + A1 - A2 (VDE 01700171 Part 7187) intrinsic safety bdquoIldquo

EEx Ia I

Probe for mining applications

Signal outputMinus potential

ThreadMonitoring

displayIntegralcontrolfunction

Monitoringdelay

Voltage (voltDC)

Aqueous liquids

Ref No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec DC 9-13 V 421 934 421 936M 14 x 15 MAX 2 sec 7 sec DC 9-13 V 421 935 421 937M 18 x 15 MIN 2 sec 7 sec DC 9-13 V 421 930 421 932

M 18 x 15 MAX 2 sec 7 sec DC 9-13 V 421 931 421 93314ldquo NPTF MIN 2 sec 7 sec DC 9-13 V 421 938 421 940

14ldquo NPTF MAX 2 sec 7 sec DC 9-13 V 421 939 421 941

UB+ = Brown

Minus = WhiteSignal = Green

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page 18

Technical data for minimum and maximum probes

Operating voltage 9 - 13 V DC

Closed-circuit current consumption approx 6 mA

Sensing point 20 mm plusmn 6 mm from sensor tip

Power output at the signal output open collector Should be limited to max 20 mA

by the user

Storage temperature - 30degC to +125degCOperating temperature - 30degC to +125degC

Fault indicating delay approx 7 sec

Integral control function approx 2 sec

Shock 50 g half-sine 11 ms

Vibration to GL requirements for type certified tests

Admissible pressure on sensor 5 bar735 PSI

Environmental protection IP 65

Protection against reverse polarity in-built between plus and minus terminal

Mounting attitude horizontal preferred

Housing brass CuZn39Pb3

Sensor coating ETFE Tefzelreg

Weight with 10 m cable approx 800 g

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page 19

Certificate of Conformity BVS 94C1001

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page 20

Certificate of Conformity BVS 94C1001

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page 21

Conductivity probeEnvironmental protection 65 DIN 40050

Probe suitable for aqueous media

Conductivity probe with bayonet 16 S

Signal outputMinus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous liquids

Ref No

M 14 x 15 MIN 2 sec 7 sec 422 200

M 14 x 15 MAX 2 sec 7 sec 422 201

14ldquo NPTF MIN 2 sec 7 sec 422 20414ldquo NPTF MAX 2 sec 7 sec 422 205

Accessories for probes with bayonet 16 S

421 672 Straight connector for bayonet 16 S for corrugated tubing NW 10421 673 90deg connector for bayonet 16 S for corrugated tubing NW 10421 772 Straight connector for bayonet 16 S with 56 mm cable sealing421 773 90deg connector for bayonet 16 S with 56 mm cable sealing

421 670 Cable with connector 421 672 300 mm

421 018 Cable with connector 421 772 1015 mm421 586 Cable with connector 421 772 1300 mm

421 668 Cable with connector 421 772 3000 mm421 671 Cable with connector 421 673 300 mm

421 891 Cable with connector 421 773 800 mm

421 585 Cable with connector 421 773 1300 mm

421 669 Cable with connector 421 773 5000 mm

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page 22

Technical Data for minimum and maximum probes

Voltage rating DC 16 - 32 V

Power consumption typically 7 mA

Switching capacity 3 W (resistive load)

Output minus switching

Voltage drop approx 35 V with 3 W lamp load

Load dump protection 70 V 270 ns

Protection from fault conditions to VDE 0939

Lamp test in-built (approx 3 s)

Fault indicating delay approx 7 s

Free-wheeling diode Inductive loads A free wheeling diode eg 1N4007 has to bemounted at the load

Protection against reverse polarity in-built between plus and minus terminalObserve correct connection of plus and signal terminals

Operating temperature - 40degC to + 120degC

Storage temperature - 40degC to + 120degC

Admissible pressure on sensor 2 bar

Max tightening torque on thread 30 Nm

Mounting attitude optional

Housing brass MS CuZnPb3nickel-plated potential-free

Sensor coating Tefzel

983214

ETFE

Sensor brass MS CuZn39Pb3(immersed in the medium)

Weight approx 100 g

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page 23

Level monitoring in the oil sump

Which are the benefits of a level monitoring system in the oil sump over conventional

pressure and temperature sensorsTemperature sensors indicate very slowly When motor oil is lost e g by tubing breakagethe component temperature can no longer be conducted to the sensors

The lower limit value of oil pressure switches or sensors is set low (low oil pressure with themotor running at no load) At rated motor speed and with too little oil in the oil circuit an oil-airmixture may be produced without that a signal is put out The components are no longer

sufficiently cooled and lubricatedIn the two events described above the output signal is available either too late or even not atall so that the motor will be damaged The level monitoring system however indicates even

before the oil level becomes too low i e as soon as the oil level has fallen 10 to 20 mmbelow the minimum marking on the dipstick Oil pressure and oil temperature indication isalways ensured

Functional diagram

Installation instructions

1 Drain the motor oil

2 Secure the adjustable elbow coupling with the tubing and the sensor support at themotor The sensor housing should be adjustable through oblong holes to determine theminimum point

3 Install the ventilation for the crankcase (e g inspection hole cover)

4 Install and connect the sensor

5 Check for correct electrical function The minimum sensor must indicate now

6 Refill the oil up to the minimum marking on the dipstick

7 Move the sensor and support slowly down until the signal is no longer availableTheswitch point of the sensor is now exactly at the minimum oil level of the motor

8 Move the sensor down by another 10 to 20 mm and fix it The signal bdquooil level too lowldquowill now be put out when the level is approx 10 to 20 mm below the minimum markingon the dipstick

Legend Ref Nr

1 Tubing complete with 350 mm pipecoupling

421 660

Tubing complete with 450 mm pipe

coupling

421 661

Tubing complete with 550 mm pipecoupling

421 659

2 Sensor support 454 134

3 PA pipe available in meters 421 662

4 Level monitoring sensor

Oil MIN 9 - 36 V 421 595Oil MAX 9 - 36 V 421 599

5 withoutcable

withcable

Straight connector 421 672 421 67090deg connector 421 673 421 671

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page 24

Accessories

Plug Connection

1 Straight taper M 27 x 1 orstraight taper bayonet 16 S

2 Gripping seal-ring NW 103 Sleeve nut for NH9-1513

A A Tapered rubber ring must

point into the sleeve nutB B Tube polyflex NW 10Part-No 421 642 M 27 x 1

Part-No 421 672 Bayonet 16 S

Plug Connection

1 Taper M 27 x 1 90deg or

2 Tape 90deg bayonet 16 S3 Gripping seal-ring NW 10

A Tapered rubber ring mustpoint into the sleeve nut

B Tube polyflex NW 10

Part-No 421 643 M 27 x 1Part-No 421 673 Bayonet 16 S

Screw-in Adapter

Outside M 22 x 15Inside M 14 x 15

Part-No 421 640

Braze-in Adapter

Inside 14ldquo NPFTPart-No 421 641

Inside M 14 x 15Part-No 421 644

Cable and Plug

Connection for Probes Approved by Classifica-tion Societies

A Cablem Part-No 421 646

B Plug connectionPart-No 421 645

Plug connection fittedwith 2 m cablePart-No 421 647

Inside M 18 x 15

Part-No 421 648

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page 25

Control and Power Supply Unit 110220 V AC 1224 V DC Order No 421 650

Up to three probes can

be fed from this powersupply unit A relay 3 Amax with one normally

open and one normallyclosed contact is fittedwhich can be used for

additional control tasks A power supply unit isavailable for connection

to 220 V

The voltage for the

relay contacts must notbe taken from thepower supply unit

Housing plastic with control lamps MIN + MAX 110 x 75 x 65 _________________________________________________________________________Control Unit Best-Nr 421 651

for automatic filling and emptying of liquids This unit is designed to control two bdquominimumldquoprobes Probe 2 monitors the maximum liquid level probe 1 the minimum level An outputrelay with a change-over contact is switched automatically for external control tasks

Relays 1 and 2 are switched to conduct when the liquids falls below minimum level Whenthe liquid level reaches maximum relay circuits 1 and 2 are automatically interrupted

LED-display

bull no display liquid level above

bull maximum LED bdquomaximumldquo lights liquid Level is between maximum and minimum andis falling

bull Both LEDrsquos light liquid level is below minimum or is between minimum and maximumand is rising Contacts r1 and r2 are closed

Two bdquominimumldquo minus switching probes with built-in control function are used for this

control The self-control is only visible when both probes are immersed in liquid The signalappears for about 2 seconds when the power supply is switched onFor this period the output (contact r1 and r2) is conducting The voltage for the relay contacts

must not be taken from the power supply unit

Technical Data for Control Unit

Operating 110220 V AC or 1224 V DC Mounting position variable

Relay relay contact t 3 Amax

Temperature - 30 degC to + 75 degC

Protective system IP 54

Control Unit for filling or emptying

Housing plastic with control lamp 110 x 75 x 65 Part No 421 651

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page 26

Probes operating on the capacitive principle

This probe is self-adjustable and can be used for liquids including high viscosity media and

powders

Short description

This BEDIA-Level Sensor is suitable for liquids including high viscosity media and powdersIt operates on the principle of electrical capacitance changes arising when an electrodesurrounded by air is immersed in a media This capacitance change causes an electric

circuit to oscillate thus switching the output transistor off The use of latest state-of-the-arthybrid technology allows the probe and the electronic circuitry to be enclosed in a singlesealed unit

ApplicationThe BEDIA-Level Sensor with itrsquos large temperature range and wide sensitivity adjusting

range is suitable for a wide spread of applications process control petrochemical industrytank level monitoring bottle and crate washing systems in breweries etc

Operating modes

Minimum switching Normally the sensing probe is immersed and the green LED indicates

As the level drops below the probe the green LED extinguishes

Maximum switching Normally the sensing probe is not immersed and the green LED

indicates As the level rises above the probe the green LED extinguishes

Diagram of working method

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page 27

Technical data

Circuit voltage 9 - 36 V DC Short circuit and overload

protectedPower consumption normal operation typ17 mA

fault operation typ10 mATime-delay typ01 sec

OutputTransistor plus switching 300 mA (500 mA short-time) short-circuit and overload proof with integral suppression diode

Terminal

configuration

max 1 mm2 screw terminals (AWG 17) Operating

temperature range

- 20degC to + 130degC

- 20degC to + 85degCMaterial - probe envelope PA 12-Gf

(polyamide with glass fibre)- fitting V2A (DIN 14305AISI 303)

- housing cover PA6-3-T (trogamide -transparent)

- O-ring FKM (viton)

Cable length max 300 m

Mounting plane horizontal (by preference Cable gland PG 7Max switchingpoint hysteresis

sensor diameter Mass ca 250 g

Cable automotive cable FLR 3 x 075 black Temp range -50degC to + 150degCBEDIA-part-no for cut goods 422 210

Dimensional diagram

A B BEDIA part no

G 34A 16mm 422 900

frac34ldquo NPT 21mm 422 901

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page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

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page 8

Probes operating on the capacitive principleEnvironmental protection IP67 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Cable colour brown = +white = -

green = S

Cable colour brown = +white = -

green = S

Environmental protection IP67 DIN 40050 Signal output

minus potential

Signal output

plus potentialThread Monitoring

display

Integral

controlfunction

Monitoring

delay

Cable

lengthin mm

Cable

connec-tion type

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref NoM 12 x 1 MIN 0 sec 7 sec 1000 1 421 580 ---- ---- ----

M 14 x 15 MIN 2 sec 7 sec 190 1 418 152 421 991 425 016 425 017

M 14 x 15 MIN 2 sec 7 sec 190 8 421 927 421 928 ---- ----M 14 x 15 MIN 2 sec 7 sec 2000 1 ---- 421 929 ---- ----

M 14 x 15 MIN 2 sec 7 sec 250 5 ---- 421 072 ---- ----M 14 x 15 MIN 2 sec 7 sec 250 9 421 070 ---- ---- ----

M 14 x 15 MIN 2 sec 7 sec 250 3 ---- 422 525 ---- ----M 14 x 15 MAX 0 sec 7 sec 250 1 421 582 421 993 425 018 425 019M 14 x 15 MIN 0 sec 7 sec 2500 1 422 297 422 298 ---- ----

M 14 x 15 MAX 0 sec 3 sec 250 5 421 569 ---- ---- ----M 14 x 15 MAX 0 sec 7 sec 250 5 ---- 421 568 ---- ----

M 14 x 15 MIN 2 sec 7 sec 250 10 418 154 ---- ---- ----

M 14 x 15 MIN 0 sec 7 sec 550 3 422 506 422 507 ---- ----M 14 x 15 MIN 0 sec 2 sec 550 1 ---- 421 507 ---- ----

M 14 x 15 MAX 0 sec 0 sec 1000 1 ---- ---- 425 300 425 301M 14 x 15 MIN 2 sec 7 sec 300 6 421 601 421 621 ---- ----

M 14 x 15 MIN 0 sec 7 sec 300 6 421 583 ---- ---- ----

M 14 x 15 MIN 2 sec 3 sec 250 1 ---- 422 527 ---- ----() Probe suitable for brake fluid DOT3(1) Cable end without connector(2) Cable w ith 3 pole flat quick-connect terminations 63 in the housing(3) Cable with 3 pole DEUTSCH socket

(4) Cable with 3 pole round G amp H connector(5) Cable with 3 pole Reinshagen connector

(6) Probe with bayonet 16 S with separate cable 421 670 300 mm straight connector

(7) Probe with connector M 27 x 1 with 300 mm cable straight connector 421 642(8) Cable with 3 pole round AMP connector

(9) Cable with 3 flat quick-connect terminations 63 in single housing(10) Cable with 3 pole AMP connector 423 325 and strain relief

(11) Probe 422 524 like the probe 422 225 however with a monitoring of cable defect

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page 9

Environmental protection IP67 DIN 40050 Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Monitoringdelay

Cablelengthin mm

Cableconnec-tion type

Aqueousliquids

Ref No

Oil and fuel

Ref No

Aqueousliquids

Ref No

Oil and fuel

Ref No

M 18 x 15 MIN 2 sec 7 sec 1000 1 ---- 421 591 ---- ----

M 18 x 15 MIN 2 sec 7 sec 400 3 422 515 ---- ---- ----M 18 x 15 MAX 2 sec 7 sec 400 3 422 516 ---- ---- ----

M 18 x 15 MIN 2 sec 7 sec 250 2 422 503 422 504 425 020 425 021M 18 x 15 MAX 0 sec 7 sec 250 1 ---- ---- 425 022 425 023

M 18 x 15 MAX 0 sec 0 sec 1000 1 425 305 425 304 ---- ----

14ldquo NPTF MIN 0 sec 0 sec 250 1 421 566 421 567 ---- ----14ldquo NPTF MAX 0 sec 0 sec 2000 1 ---- ---- 425 030 ----14ldquo NPTF MIN 2 sec 7 sec 250 1 418 153 421 992 425 024 425 02514ldquo NPTF MAX 0 sec 7 sec 250 1 421 999 421 997 425 026 425 02714ldquo NPTF MAX 0 sec 7 sec 250 4 422 505 ---- ---- ----

14ldquo NPTF MIN 2 sec 7 sec 250 1 421 402 ---- ---- ----14ldquo NPTF MIN 2 sec 7 sec 550 3 422 225 422 226 ---- ----

14ldquo NPTF MIN 2 sec 7 sec 550 11 422 524 ---- ---- ----14ldquo NPTF MAX 0 sec 7 sec 550 3 422 521 422 522 425 302 ----

14ldquo NPTF MIN 2 sec 7 sec 300 6 421 605 421 625 ---- ----

14ldquo NPTF MIN 2 sec 7 sec 300 7 421 987 ---- ---- ----14ldquo NPTF MIN 0 sec 7 sec 550 3 ---- ---- ---- 425 303

38NPTF MAX 0 sec 7 sec 1000 1 ---- ---- ---- 425 031

R 38ldquo MAX 0 sec 7 sec 250 1 421 998 ---- ---- ----R 38ldquo MAX 0 sec 7 sec 250 3 422 286 ---- ---- ----

R 38ldquo MAX 0 sec 0 sec 360 3 ---- 421 510 ---- ----G 12 MIN 0 sec 0 sec 250 9 421 515 ---- ---- ----

G 1 MIN 2 sec 7 sec 250 1 425 307 ---- ---- ----Probe with the sensing point at 35 mm from sensor tip

R 38ldquo MAX 0 sec 7 sec 2000 1 422 523 ---- ---- ----G 1ldquo MAX 0 sec 7 sec 250 1 425 306 ---- ---- ----

() Probe suitable for brake fluid DOT3

(1) Cable end without connector(2) Cable with 3 pole flat quick-connect terminations 63 in the housing(3) Cable with 3 pole DEUTSCH socket(4) Cable with 3 pole round G amp H connector(5) Cable with 3 pole Reinshagen connector

(6) Probe with bayonet 16 S with separate cable 421 670 300 mm straight connector(7) Probe with connector M 27 x 1 with 300 mm cable straight connector 421 642

(8) Cable with 3 pole round AMP connector(9) Cable with 3 flat quick-connect terminations 63 in single housing

(10) Cable with 3 pole AMP connector 423 325 and strain relief

(11) Probe 422 524 like the probe 422 225 however with a monitoring of cable defect

Cable automotive cable FLR 3x075 black temp range - 50degC to +150degCTechnical data see page 12 Installation instruction see page 13

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page 10

Probe with connector DIN 72 585Environmental protection 69K DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Monitoringdelay

Aqueousliquids

Ref No

Oil and fuel

Ref No

Aqueousliquids

Ref No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec 420 400 420 431 420 401 420 432M 14 x 15 MIN 0 sec 7 sec ---- 420 446 ---- ----M 14 x 15 MIN 0 sec 2 sec 420 419 420 447 ---- 420 443M 14 x 15 MAX 0 sec 7 sec 420 402 420 433 420 403 420 434M 14 x 15 MAX 0 sec 0 sec ---- ---- 420 413 420 414

M 14 x 15 MIN 2 sec 60 min ---- 420 444 ---- ----

M 14 x 15 MIN 2 sec 60 sec ---- 420 449 ---- ----M 18 x 15 MIN 2 sec 7 sec 420 404 420 435 420 405 420 436

M 18 x 15 MIN 0 sec 7 sec 420 417 ---- ---- ----M 18 x 15 MAX 0 sec 7 sec 420 406 420 437 420 407 420 438

M 18 x 15 MAX 0 sec 0 sec ---- 420 430 ---- ----

R 38ldquo MAX 0 sec 7 sec 420 420 420 421 ---- ----G 38ldquo MAX 0 sec 0 sec ---- ---- ---- 420 448

14ldquo NPTF MIN 2 sec 7 sec 420 408 420 439 420 409 420 44014ldquo NPTF MIN 0 sec 7 sec 420 418 ---- ---- ----14ldquoNPTF MAX 0 sec 7 sec 420 410 420 441 420 411 420 442

14ldquoNPTF MIN 1 sec 17 sec 420 415 ---- ---- ----Probe with the sensing point 43mm from sensor tip

M 14 x 15 MIN 1 sec 17 sec 420 412

Accessories for probes with connector DIN 72585

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page 11

420 700 Straight connector for bayonet 16 S for corrugated tubing NW10

420 701 90deg connector for bayonet 16 S for corrugated tubing NW 10420 702 Connector 90deg for cable

420 703 Straight connector for cable420 704 Cable with connector 421 672 300 mm

420 705 Cable with connector 420 703 300 mm

420 706 Cable with connector 420 702 1000 mm420 707 Cable with connector 420 703 1000 mm

420 708 Cable with connector 420 702 3000 mm

Technical data see page 12 Installation instruction see page 13

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page 12

Probe with connector DIN 43 650

Environmental protection 65 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal output

minus potential

Signal output

plus potentialThread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref NoM 14 x 15 MIN 2 sec 7 sec 420 600 420 620 420 601 420 621

M 14 x 15 MAX 0 sec 7 sec 420 602 420 622 420 603 420 623M 18 x 15 MIN 2 sec 7 sec 420 604 420 624 420 605 420 625M 18 x 15 MAX 0 sec 7 sec 420 606 420 626 420 607 420 62714ldquo NPTF MIN 2 sec 7 sec 420 608 420 628 420 609 420 62914ldquoNPTF MAX 0 sec 7 sec 420 610 420 630 420 611 420 631

R 38ldquo MAX 0 sec 0 sec ---- ---- ---- 420 650

Accessories for probes with connector

421 880 connector M3x35 to DIN 43 650

Technical data see page 12 Installation instruction see page 13

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page 13

Technical data for minimum and maximum probes

Operating voltage 12V-24V (-25+50)

Output current 1 A over the whole operating voltage range

Short-circuit and overload protected overt the entire temperature range

At minus switching probes the minus potential is switched through At plus switching probes the plus potential is switched through

Sensing point 18 mm +- 6 mm

Closed-circuit current consumption approx 6 mA

Voltage spikes 70 V dropping to Un in 270 ns

Medium temperature Water - 30degC to + 110degC

Oil - 30degC to + 125degC

Ambient temperature - 30degC to + 100degC

Storage temperature - 50degC to + 125degC

Response delay see table

Integral control function see table

Shock resistance 50 g half-sine 11 ms

Pressure on sensor up to 25 bar3675 PSI

Reverse polarity protection in-built between plus and minus terminal

Mounting attitude optional

Housing brass CuZn39Pb3

capacitively connected to frame

Weight approx 125 g

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or plus

potential to the minus terminal as otherwise the probes may be destroyed- Plus switching probes Do not connect plus potential to the signal terminal or minus

potential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

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page 14

Installation Instruction for BEDIA Level Monitoring Probes

BEDIA Level Monitoring Probes may be installed in any attitude

Please observe the following instructions when installing the probe

1 To prevent false indication install the probe in a smooth area where it is not affected bysplashing media as may be the case when it is installed in a gear unit or directly in the

motor oil sump

2 To prevent false indication install the sensor at least 15mm from the wall away

Only for water - sensors

3 False indication may also occur if the sensor is mounted from above in a plasticcontainer with the medium carrying no potential In all other mounting attitudes the

housing will be in contact with the medium so as to ensure potential is available

4 Connection Diagram

Minus switching probes Plus switching probes

5 Connection of the cables free wheeling diode

Bayonet 16SThread M27x1

Bayonet 10SL Bayonet DIN 72585Bayonet DIN 43650

Cable

+ A 1 Brown

- B 2 White

S C 3 Green

sensor

wall

gt15mm

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page 15

Probe with bayonet 10 SL to VG 0095342Environmental protection 67 DIN 40050

Probe suitable for aqueous media Connection diagram

Signal outputminus potential

Signal outputplus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref No

M 18 x 15 MIN 1 sec 3 sec 421 903 421 950 421 470 421 471

M 18 x 15 MAX 1 sec 3 sec 421 951 421 952 421 472 421 473M 18 x 15 MIN 2 sec 7 sec ---- 421 984 ---- ----

M 18 x 15 MAX 0 sec 7 sec ---- 421 990 ---- ----

Probe with bayonet 10 SL to VG 0095342

Probe suitable for aqueous media

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Function-control

Integralcontrolfunction

Monitoringdelay

Aqueousliquids

Ref No

Oil and fueRef No

Aqueousliquids

Ref No

Oil and fueRef No

M 18 x 15 MIN 1 sec 3 sec 200 421 906 421 957 421 478 421 479M 18 x 15 MAX 1 sec 3 sec 200 421 958 421 959 421 480 421 481M 18 x 15 MIN 1 sec 3 sec 450 421 960 ---- ---- ----

Accessories for probes with connector Cannon for bajonet 10 SL

421 652 Straight connector for bayonet 10 SL

421 885 Straight connector for bayonet 10 SL421 646 Cable with connector 3 x 1 with license for cut goods

421 653 Cable with connector 421 652 2000 mm

421 657 Cable with connector 421 652 5000 mm421 648 Brazed adapter internal thread M 18 x 15

Technical data see following pages

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page 16

Technical data for minimum and maximum probes

Mechanical dataHousing stainless non-magneticThread M18x15 max tightening torque 30 NmSealing ring (not supplied with the system) 18x22 DIN 7603-CUFitting Cu-Zn alloy material No 20401

Connection see table to VG 0095342Isolation of sensor Tefzel ETFE

Marking function type number manufacturing date voltageMounting attitude optional immersion depth horizontal approx 3 mm plusmn 2 mm

immersion depth vertical approx 20 mm plusmn 6 mmMass approx 200 g Ambient temperature - 30degC to + 125degC

Storage temperature - 55degC to + 125degCMedium temperature - 30degC to + 125degCSinusoidal vibration (peak) 2 - 25 Hz 16mm amplitude

25 - 420 Hz 4 g amplitude

420 - 1330 Hz 5 g amplitude1330 - 2700 Hz 10 g amplitude2700 - 5000 Hz 25 g amplitude

Relative humidity up to 100

Environment Shock (peak)

50 g half-sine 11 ms

EMC IEC 801 (1-4) lt 500 mV rmsdepending on cables

EMC to VG 95373 only with external filterInterference suppression to VDE0871 limit B

Pressure on sensor max 25 bar3675 PSIMedia to be monitored water cooling water seawater oil fuel hydraulic oil

brake fluidDependability The performance is not impaired by small deposits on

the probe

Electric data Protection against reversepolarity

Voltage spikes

between UB and frame

70 V dropping to UN in270

Voltage rating 9 - 36 V Hysteresis of response max plusmn 5 mm aroundthe sensing point

Output open collector switchingminus potential

Response time - bdquolevelacceptableldquo

typically 1 s (05 s to15 s)

Closed-circuit current at24 V

lt 10 mA Response time - bdquolevelunacceptableldquo

Recovery time

typically 3 s (1 s to 4 s)

lt 2 s

Power consumption closed-circuit current plus

switching current

Integral control function see table

Switching capacity max 1 A continuous currentin the voltage range indicated

Terminal connection A = + UB B = - UB C = output signal

Load resistive and inductive Potential of housing

Dielectric strength

physically isolated fromplus UB and minus UB

VDE

0100500 VDC 1 minLoad inductance 500 mH Insulation resistance VDE 0160500 VAC50

Hz 1 minDielectric resistance gt 10 M Ohm

Voltage through lt 0 5 V

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or pluspotential to the minus terminal as otherwise the probes may be destroyed

- Plus switching probes Do not connect plus potential to the signal terminal or minuspotential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

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page 17

Probes operating on the capacitive principle Ex approvedEnvironmental protection 65 DIN 40050

Probe suitable for aqueousmedia

Probe suitable for oil and fuel

Certificate of ConformityEN 50014-1977 + A1 - A5 (VDE 01700171 Part 1187) General requirementsEN 50020-1977 + A1 - A2 (VDE 01700171 Part 7187) intrinsic safety bdquoIldquo

EEx Ia I

Probe for mining applications

Signal outputMinus potential

ThreadMonitoring

displayIntegralcontrolfunction

Monitoringdelay

Voltage (voltDC)

Aqueous liquids

Ref No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec DC 9-13 V 421 934 421 936M 14 x 15 MAX 2 sec 7 sec DC 9-13 V 421 935 421 937M 18 x 15 MIN 2 sec 7 sec DC 9-13 V 421 930 421 932

M 18 x 15 MAX 2 sec 7 sec DC 9-13 V 421 931 421 93314ldquo NPTF MIN 2 sec 7 sec DC 9-13 V 421 938 421 940

14ldquo NPTF MAX 2 sec 7 sec DC 9-13 V 421 939 421 941

UB+ = Brown

Minus = WhiteSignal = Green

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page 18

Technical data for minimum and maximum probes

Operating voltage 9 - 13 V DC

Closed-circuit current consumption approx 6 mA

Sensing point 20 mm plusmn 6 mm from sensor tip

Power output at the signal output open collector Should be limited to max 20 mA

by the user

Storage temperature - 30degC to +125degCOperating temperature - 30degC to +125degC

Fault indicating delay approx 7 sec

Integral control function approx 2 sec

Shock 50 g half-sine 11 ms

Vibration to GL requirements for type certified tests

Admissible pressure on sensor 5 bar735 PSI

Environmental protection IP 65

Protection against reverse polarity in-built between plus and minus terminal

Mounting attitude horizontal preferred

Housing brass CuZn39Pb3

Sensor coating ETFE Tefzelreg

Weight with 10 m cable approx 800 g

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page 19

Certificate of Conformity BVS 94C1001

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page 20

Certificate of Conformity BVS 94C1001

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page 21

Conductivity probeEnvironmental protection 65 DIN 40050

Probe suitable for aqueous media

Conductivity probe with bayonet 16 S

Signal outputMinus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous liquids

Ref No

M 14 x 15 MIN 2 sec 7 sec 422 200

M 14 x 15 MAX 2 sec 7 sec 422 201

14ldquo NPTF MIN 2 sec 7 sec 422 20414ldquo NPTF MAX 2 sec 7 sec 422 205

Accessories for probes with bayonet 16 S

421 672 Straight connector for bayonet 16 S for corrugated tubing NW 10421 673 90deg connector for bayonet 16 S for corrugated tubing NW 10421 772 Straight connector for bayonet 16 S with 56 mm cable sealing421 773 90deg connector for bayonet 16 S with 56 mm cable sealing

421 670 Cable with connector 421 672 300 mm

421 018 Cable with connector 421 772 1015 mm421 586 Cable with connector 421 772 1300 mm

421 668 Cable with connector 421 772 3000 mm421 671 Cable with connector 421 673 300 mm

421 891 Cable with connector 421 773 800 mm

421 585 Cable with connector 421 773 1300 mm

421 669 Cable with connector 421 773 5000 mm

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page 22

Technical Data for minimum and maximum probes

Voltage rating DC 16 - 32 V

Power consumption typically 7 mA

Switching capacity 3 W (resistive load)

Output minus switching

Voltage drop approx 35 V with 3 W lamp load

Load dump protection 70 V 270 ns

Protection from fault conditions to VDE 0939

Lamp test in-built (approx 3 s)

Fault indicating delay approx 7 s

Free-wheeling diode Inductive loads A free wheeling diode eg 1N4007 has to bemounted at the load

Protection against reverse polarity in-built between plus and minus terminalObserve correct connection of plus and signal terminals

Operating temperature - 40degC to + 120degC

Storage temperature - 40degC to + 120degC

Admissible pressure on sensor 2 bar

Max tightening torque on thread 30 Nm

Mounting attitude optional

Housing brass MS CuZnPb3nickel-plated potential-free

Sensor coating Tefzel

983214

ETFE

Sensor brass MS CuZn39Pb3(immersed in the medium)

Weight approx 100 g

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page 23

Level monitoring in the oil sump

Which are the benefits of a level monitoring system in the oil sump over conventional

pressure and temperature sensorsTemperature sensors indicate very slowly When motor oil is lost e g by tubing breakagethe component temperature can no longer be conducted to the sensors

The lower limit value of oil pressure switches or sensors is set low (low oil pressure with themotor running at no load) At rated motor speed and with too little oil in the oil circuit an oil-airmixture may be produced without that a signal is put out The components are no longer

sufficiently cooled and lubricatedIn the two events described above the output signal is available either too late or even not atall so that the motor will be damaged The level monitoring system however indicates even

before the oil level becomes too low i e as soon as the oil level has fallen 10 to 20 mmbelow the minimum marking on the dipstick Oil pressure and oil temperature indication isalways ensured

Functional diagram

Installation instructions

1 Drain the motor oil

2 Secure the adjustable elbow coupling with the tubing and the sensor support at themotor The sensor housing should be adjustable through oblong holes to determine theminimum point

3 Install the ventilation for the crankcase (e g inspection hole cover)

4 Install and connect the sensor

5 Check for correct electrical function The minimum sensor must indicate now

6 Refill the oil up to the minimum marking on the dipstick

7 Move the sensor and support slowly down until the signal is no longer availableTheswitch point of the sensor is now exactly at the minimum oil level of the motor

8 Move the sensor down by another 10 to 20 mm and fix it The signal bdquooil level too lowldquowill now be put out when the level is approx 10 to 20 mm below the minimum markingon the dipstick

Legend Ref Nr

1 Tubing complete with 350 mm pipecoupling

421 660

Tubing complete with 450 mm pipe

coupling

421 661

Tubing complete with 550 mm pipecoupling

421 659

2 Sensor support 454 134

3 PA pipe available in meters 421 662

4 Level monitoring sensor

Oil MIN 9 - 36 V 421 595Oil MAX 9 - 36 V 421 599

5 withoutcable

withcable

Straight connector 421 672 421 67090deg connector 421 673 421 671

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page 24

Accessories

Plug Connection

1 Straight taper M 27 x 1 orstraight taper bayonet 16 S

2 Gripping seal-ring NW 103 Sleeve nut for NH9-1513

A A Tapered rubber ring must

point into the sleeve nutB B Tube polyflex NW 10Part-No 421 642 M 27 x 1

Part-No 421 672 Bayonet 16 S

Plug Connection

1 Taper M 27 x 1 90deg or

2 Tape 90deg bayonet 16 S3 Gripping seal-ring NW 10

A Tapered rubber ring mustpoint into the sleeve nut

B Tube polyflex NW 10

Part-No 421 643 M 27 x 1Part-No 421 673 Bayonet 16 S

Screw-in Adapter

Outside M 22 x 15Inside M 14 x 15

Part-No 421 640

Braze-in Adapter

Inside 14ldquo NPFTPart-No 421 641

Inside M 14 x 15Part-No 421 644

Cable and Plug

Connection for Probes Approved by Classifica-tion Societies

A Cablem Part-No 421 646

B Plug connectionPart-No 421 645

Plug connection fittedwith 2 m cablePart-No 421 647

Inside M 18 x 15

Part-No 421 648

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page 25

Control and Power Supply Unit 110220 V AC 1224 V DC Order No 421 650

Up to three probes can

be fed from this powersupply unit A relay 3 Amax with one normally

open and one normallyclosed contact is fittedwhich can be used for

additional control tasks A power supply unit isavailable for connection

to 220 V

The voltage for the

relay contacts must notbe taken from thepower supply unit

Housing plastic with control lamps MIN + MAX 110 x 75 x 65 _________________________________________________________________________Control Unit Best-Nr 421 651

for automatic filling and emptying of liquids This unit is designed to control two bdquominimumldquoprobes Probe 2 monitors the maximum liquid level probe 1 the minimum level An outputrelay with a change-over contact is switched automatically for external control tasks

Relays 1 and 2 are switched to conduct when the liquids falls below minimum level Whenthe liquid level reaches maximum relay circuits 1 and 2 are automatically interrupted

LED-display

bull no display liquid level above

bull maximum LED bdquomaximumldquo lights liquid Level is between maximum and minimum andis falling

bull Both LEDrsquos light liquid level is below minimum or is between minimum and maximumand is rising Contacts r1 and r2 are closed

Two bdquominimumldquo minus switching probes with built-in control function are used for this

control The self-control is only visible when both probes are immersed in liquid The signalappears for about 2 seconds when the power supply is switched onFor this period the output (contact r1 and r2) is conducting The voltage for the relay contacts

must not be taken from the power supply unit

Technical Data for Control Unit

Operating 110220 V AC or 1224 V DC Mounting position variable

Relay relay contact t 3 Amax

Temperature - 30 degC to + 75 degC

Protective system IP 54

Control Unit for filling or emptying

Housing plastic with control lamp 110 x 75 x 65 Part No 421 651

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page 26

Probes operating on the capacitive principle

This probe is self-adjustable and can be used for liquids including high viscosity media and

powders

Short description

This BEDIA-Level Sensor is suitable for liquids including high viscosity media and powdersIt operates on the principle of electrical capacitance changes arising when an electrodesurrounded by air is immersed in a media This capacitance change causes an electric

circuit to oscillate thus switching the output transistor off The use of latest state-of-the-arthybrid technology allows the probe and the electronic circuitry to be enclosed in a singlesealed unit

ApplicationThe BEDIA-Level Sensor with itrsquos large temperature range and wide sensitivity adjusting

range is suitable for a wide spread of applications process control petrochemical industrytank level monitoring bottle and crate washing systems in breweries etc

Operating modes

Minimum switching Normally the sensing probe is immersed and the green LED indicates

As the level drops below the probe the green LED extinguishes

Maximum switching Normally the sensing probe is not immersed and the green LED

indicates As the level rises above the probe the green LED extinguishes

Diagram of working method

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Technical data

Circuit voltage 9 - 36 V DC Short circuit and overload

protectedPower consumption normal operation typ17 mA

fault operation typ10 mATime-delay typ01 sec

OutputTransistor plus switching 300 mA (500 mA short-time) short-circuit and overload proof with integral suppression diode

Terminal

configuration

max 1 mm2 screw terminals (AWG 17) Operating

temperature range

- 20degC to + 130degC

- 20degC to + 85degCMaterial - probe envelope PA 12-Gf

(polyamide with glass fibre)- fitting V2A (DIN 14305AISI 303)

- housing cover PA6-3-T (trogamide -transparent)

- O-ring FKM (viton)

Cable length max 300 m

Mounting plane horizontal (by preference Cable gland PG 7Max switchingpoint hysteresis

sensor diameter Mass ca 250 g

Cable automotive cable FLR 3 x 075 black Temp range -50degC to + 150degCBEDIA-part-no for cut goods 422 210

Dimensional diagram

A B BEDIA part no

G 34A 16mm 422 900

frac34ldquo NPT 21mm 422 901

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page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

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page 9

Environmental protection IP67 DIN 40050 Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Monitoringdelay

Cablelengthin mm

Cableconnec-tion type

Aqueousliquids

Ref No

Oil and fuel

Ref No

Aqueousliquids

Ref No

Oil and fuel

Ref No

M 18 x 15 MIN 2 sec 7 sec 1000 1 ---- 421 591 ---- ----

M 18 x 15 MIN 2 sec 7 sec 400 3 422 515 ---- ---- ----M 18 x 15 MAX 2 sec 7 sec 400 3 422 516 ---- ---- ----

M 18 x 15 MIN 2 sec 7 sec 250 2 422 503 422 504 425 020 425 021M 18 x 15 MAX 0 sec 7 sec 250 1 ---- ---- 425 022 425 023

M 18 x 15 MAX 0 sec 0 sec 1000 1 425 305 425 304 ---- ----

14ldquo NPTF MIN 0 sec 0 sec 250 1 421 566 421 567 ---- ----14ldquo NPTF MAX 0 sec 0 sec 2000 1 ---- ---- 425 030 ----14ldquo NPTF MIN 2 sec 7 sec 250 1 418 153 421 992 425 024 425 02514ldquo NPTF MAX 0 sec 7 sec 250 1 421 999 421 997 425 026 425 02714ldquo NPTF MAX 0 sec 7 sec 250 4 422 505 ---- ---- ----

14ldquo NPTF MIN 2 sec 7 sec 250 1 421 402 ---- ---- ----14ldquo NPTF MIN 2 sec 7 sec 550 3 422 225 422 226 ---- ----

14ldquo NPTF MIN 2 sec 7 sec 550 11 422 524 ---- ---- ----14ldquo NPTF MAX 0 sec 7 sec 550 3 422 521 422 522 425 302 ----

14ldquo NPTF MIN 2 sec 7 sec 300 6 421 605 421 625 ---- ----

14ldquo NPTF MIN 2 sec 7 sec 300 7 421 987 ---- ---- ----14ldquo NPTF MIN 0 sec 7 sec 550 3 ---- ---- ---- 425 303

38NPTF MAX 0 sec 7 sec 1000 1 ---- ---- ---- 425 031

R 38ldquo MAX 0 sec 7 sec 250 1 421 998 ---- ---- ----R 38ldquo MAX 0 sec 7 sec 250 3 422 286 ---- ---- ----

R 38ldquo MAX 0 sec 0 sec 360 3 ---- 421 510 ---- ----G 12 MIN 0 sec 0 sec 250 9 421 515 ---- ---- ----

G 1 MIN 2 sec 7 sec 250 1 425 307 ---- ---- ----Probe with the sensing point at 35 mm from sensor tip

R 38ldquo MAX 0 sec 7 sec 2000 1 422 523 ---- ---- ----G 1ldquo MAX 0 sec 7 sec 250 1 425 306 ---- ---- ----

() Probe suitable for brake fluid DOT3

(1) Cable end without connector(2) Cable with 3 pole flat quick-connect terminations 63 in the housing(3) Cable with 3 pole DEUTSCH socket(4) Cable with 3 pole round G amp H connector(5) Cable with 3 pole Reinshagen connector

(6) Probe with bayonet 16 S with separate cable 421 670 300 mm straight connector(7) Probe with connector M 27 x 1 with 300 mm cable straight connector 421 642

(8) Cable with 3 pole round AMP connector(9) Cable with 3 flat quick-connect terminations 63 in single housing

(10) Cable with 3 pole AMP connector 423 325 and strain relief

(11) Probe 422 524 like the probe 422 225 however with a monitoring of cable defect

Cable automotive cable FLR 3x075 black temp range - 50degC to +150degCTechnical data see page 12 Installation instruction see page 13

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page 10

Probe with connector DIN 72 585Environmental protection 69K DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Monitoringdelay

Aqueousliquids

Ref No

Oil and fuel

Ref No

Aqueousliquids

Ref No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec 420 400 420 431 420 401 420 432M 14 x 15 MIN 0 sec 7 sec ---- 420 446 ---- ----M 14 x 15 MIN 0 sec 2 sec 420 419 420 447 ---- 420 443M 14 x 15 MAX 0 sec 7 sec 420 402 420 433 420 403 420 434M 14 x 15 MAX 0 sec 0 sec ---- ---- 420 413 420 414

M 14 x 15 MIN 2 sec 60 min ---- 420 444 ---- ----

M 14 x 15 MIN 2 sec 60 sec ---- 420 449 ---- ----M 18 x 15 MIN 2 sec 7 sec 420 404 420 435 420 405 420 436

M 18 x 15 MIN 0 sec 7 sec 420 417 ---- ---- ----M 18 x 15 MAX 0 sec 7 sec 420 406 420 437 420 407 420 438

M 18 x 15 MAX 0 sec 0 sec ---- 420 430 ---- ----

R 38ldquo MAX 0 sec 7 sec 420 420 420 421 ---- ----G 38ldquo MAX 0 sec 0 sec ---- ---- ---- 420 448

14ldquo NPTF MIN 2 sec 7 sec 420 408 420 439 420 409 420 44014ldquo NPTF MIN 0 sec 7 sec 420 418 ---- ---- ----14ldquoNPTF MAX 0 sec 7 sec 420 410 420 441 420 411 420 442

14ldquoNPTF MIN 1 sec 17 sec 420 415 ---- ---- ----Probe with the sensing point 43mm from sensor tip

M 14 x 15 MIN 1 sec 17 sec 420 412

Accessories for probes with connector DIN 72585

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page 11

420 700 Straight connector for bayonet 16 S for corrugated tubing NW10

420 701 90deg connector for bayonet 16 S for corrugated tubing NW 10420 702 Connector 90deg for cable

420 703 Straight connector for cable420 704 Cable with connector 421 672 300 mm

420 705 Cable with connector 420 703 300 mm

420 706 Cable with connector 420 702 1000 mm420 707 Cable with connector 420 703 1000 mm

420 708 Cable with connector 420 702 3000 mm

Technical data see page 12 Installation instruction see page 13

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page 12

Probe with connector DIN 43 650

Environmental protection 65 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal output

minus potential

Signal output

plus potentialThread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref NoM 14 x 15 MIN 2 sec 7 sec 420 600 420 620 420 601 420 621

M 14 x 15 MAX 0 sec 7 sec 420 602 420 622 420 603 420 623M 18 x 15 MIN 2 sec 7 sec 420 604 420 624 420 605 420 625M 18 x 15 MAX 0 sec 7 sec 420 606 420 626 420 607 420 62714ldquo NPTF MIN 2 sec 7 sec 420 608 420 628 420 609 420 62914ldquoNPTF MAX 0 sec 7 sec 420 610 420 630 420 611 420 631

R 38ldquo MAX 0 sec 0 sec ---- ---- ---- 420 650

Accessories for probes with connector

421 880 connector M3x35 to DIN 43 650

Technical data see page 12 Installation instruction see page 13

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page 13

Technical data for minimum and maximum probes

Operating voltage 12V-24V (-25+50)

Output current 1 A over the whole operating voltage range

Short-circuit and overload protected overt the entire temperature range

At minus switching probes the minus potential is switched through At plus switching probes the plus potential is switched through

Sensing point 18 mm +- 6 mm

Closed-circuit current consumption approx 6 mA

Voltage spikes 70 V dropping to Un in 270 ns

Medium temperature Water - 30degC to + 110degC

Oil - 30degC to + 125degC

Ambient temperature - 30degC to + 100degC

Storage temperature - 50degC to + 125degC

Response delay see table

Integral control function see table

Shock resistance 50 g half-sine 11 ms

Pressure on sensor up to 25 bar3675 PSI

Reverse polarity protection in-built between plus and minus terminal

Mounting attitude optional

Housing brass CuZn39Pb3

capacitively connected to frame

Weight approx 125 g

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or plus

potential to the minus terminal as otherwise the probes may be destroyed- Plus switching probes Do not connect plus potential to the signal terminal or minus

potential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

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page 14

Installation Instruction for BEDIA Level Monitoring Probes

BEDIA Level Monitoring Probes may be installed in any attitude

Please observe the following instructions when installing the probe

1 To prevent false indication install the probe in a smooth area where it is not affected bysplashing media as may be the case when it is installed in a gear unit or directly in the

motor oil sump

2 To prevent false indication install the sensor at least 15mm from the wall away

Only for water - sensors

3 False indication may also occur if the sensor is mounted from above in a plasticcontainer with the medium carrying no potential In all other mounting attitudes the

housing will be in contact with the medium so as to ensure potential is available

4 Connection Diagram

Minus switching probes Plus switching probes

5 Connection of the cables free wheeling diode

Bayonet 16SThread M27x1

Bayonet 10SL Bayonet DIN 72585Bayonet DIN 43650

Cable

+ A 1 Brown

- B 2 White

S C 3 Green

sensor

wall

gt15mm

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page 15

Probe with bayonet 10 SL to VG 0095342Environmental protection 67 DIN 40050

Probe suitable for aqueous media Connection diagram

Signal outputminus potential

Signal outputplus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref No

M 18 x 15 MIN 1 sec 3 sec 421 903 421 950 421 470 421 471

M 18 x 15 MAX 1 sec 3 sec 421 951 421 952 421 472 421 473M 18 x 15 MIN 2 sec 7 sec ---- 421 984 ---- ----

M 18 x 15 MAX 0 sec 7 sec ---- 421 990 ---- ----

Probe with bayonet 10 SL to VG 0095342

Probe suitable for aqueous media

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Function-control

Integralcontrolfunction

Monitoringdelay

Aqueousliquids

Ref No

Oil and fueRef No

Aqueousliquids

Ref No

Oil and fueRef No

M 18 x 15 MIN 1 sec 3 sec 200 421 906 421 957 421 478 421 479M 18 x 15 MAX 1 sec 3 sec 200 421 958 421 959 421 480 421 481M 18 x 15 MIN 1 sec 3 sec 450 421 960 ---- ---- ----

Accessories for probes with connector Cannon for bajonet 10 SL

421 652 Straight connector for bayonet 10 SL

421 885 Straight connector for bayonet 10 SL421 646 Cable with connector 3 x 1 with license for cut goods

421 653 Cable with connector 421 652 2000 mm

421 657 Cable with connector 421 652 5000 mm421 648 Brazed adapter internal thread M 18 x 15

Technical data see following pages

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page 16

Technical data for minimum and maximum probes

Mechanical dataHousing stainless non-magneticThread M18x15 max tightening torque 30 NmSealing ring (not supplied with the system) 18x22 DIN 7603-CUFitting Cu-Zn alloy material No 20401

Connection see table to VG 0095342Isolation of sensor Tefzel ETFE

Marking function type number manufacturing date voltageMounting attitude optional immersion depth horizontal approx 3 mm plusmn 2 mm

immersion depth vertical approx 20 mm plusmn 6 mmMass approx 200 g Ambient temperature - 30degC to + 125degC

Storage temperature - 55degC to + 125degCMedium temperature - 30degC to + 125degCSinusoidal vibration (peak) 2 - 25 Hz 16mm amplitude

25 - 420 Hz 4 g amplitude

420 - 1330 Hz 5 g amplitude1330 - 2700 Hz 10 g amplitude2700 - 5000 Hz 25 g amplitude

Relative humidity up to 100

Environment Shock (peak)

50 g half-sine 11 ms

EMC IEC 801 (1-4) lt 500 mV rmsdepending on cables

EMC to VG 95373 only with external filterInterference suppression to VDE0871 limit B

Pressure on sensor max 25 bar3675 PSIMedia to be monitored water cooling water seawater oil fuel hydraulic oil

brake fluidDependability The performance is not impaired by small deposits on

the probe

Electric data Protection against reversepolarity

Voltage spikes

between UB and frame

70 V dropping to UN in270

Voltage rating 9 - 36 V Hysteresis of response max plusmn 5 mm aroundthe sensing point

Output open collector switchingminus potential

Response time - bdquolevelacceptableldquo

typically 1 s (05 s to15 s)

Closed-circuit current at24 V

lt 10 mA Response time - bdquolevelunacceptableldquo

Recovery time

typically 3 s (1 s to 4 s)

lt 2 s

Power consumption closed-circuit current plus

switching current

Integral control function see table

Switching capacity max 1 A continuous currentin the voltage range indicated

Terminal connection A = + UB B = - UB C = output signal

Load resistive and inductive Potential of housing

Dielectric strength

physically isolated fromplus UB and minus UB

VDE

0100500 VDC 1 minLoad inductance 500 mH Insulation resistance VDE 0160500 VAC50

Hz 1 minDielectric resistance gt 10 M Ohm

Voltage through lt 0 5 V

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or pluspotential to the minus terminal as otherwise the probes may be destroyed

- Plus switching probes Do not connect plus potential to the signal terminal or minuspotential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

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page 17

Probes operating on the capacitive principle Ex approvedEnvironmental protection 65 DIN 40050

Probe suitable for aqueousmedia

Probe suitable for oil and fuel

Certificate of ConformityEN 50014-1977 + A1 - A5 (VDE 01700171 Part 1187) General requirementsEN 50020-1977 + A1 - A2 (VDE 01700171 Part 7187) intrinsic safety bdquoIldquo

EEx Ia I

Probe for mining applications

Signal outputMinus potential

ThreadMonitoring

displayIntegralcontrolfunction

Monitoringdelay

Voltage (voltDC)

Aqueous liquids

Ref No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec DC 9-13 V 421 934 421 936M 14 x 15 MAX 2 sec 7 sec DC 9-13 V 421 935 421 937M 18 x 15 MIN 2 sec 7 sec DC 9-13 V 421 930 421 932

M 18 x 15 MAX 2 sec 7 sec DC 9-13 V 421 931 421 93314ldquo NPTF MIN 2 sec 7 sec DC 9-13 V 421 938 421 940

14ldquo NPTF MAX 2 sec 7 sec DC 9-13 V 421 939 421 941

UB+ = Brown

Minus = WhiteSignal = Green

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page 18

Technical data for minimum and maximum probes

Operating voltage 9 - 13 V DC

Closed-circuit current consumption approx 6 mA

Sensing point 20 mm plusmn 6 mm from sensor tip

Power output at the signal output open collector Should be limited to max 20 mA

by the user

Storage temperature - 30degC to +125degCOperating temperature - 30degC to +125degC

Fault indicating delay approx 7 sec

Integral control function approx 2 sec

Shock 50 g half-sine 11 ms

Vibration to GL requirements for type certified tests

Admissible pressure on sensor 5 bar735 PSI

Environmental protection IP 65

Protection against reverse polarity in-built between plus and minus terminal

Mounting attitude horizontal preferred

Housing brass CuZn39Pb3

Sensor coating ETFE Tefzelreg

Weight with 10 m cable approx 800 g

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page 19

Certificate of Conformity BVS 94C1001

7182019 BEDIA Level Monitoring

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page 20

Certificate of Conformity BVS 94C1001

7182019 BEDIA Level Monitoring

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page 21

Conductivity probeEnvironmental protection 65 DIN 40050

Probe suitable for aqueous media

Conductivity probe with bayonet 16 S

Signal outputMinus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous liquids

Ref No

M 14 x 15 MIN 2 sec 7 sec 422 200

M 14 x 15 MAX 2 sec 7 sec 422 201

14ldquo NPTF MIN 2 sec 7 sec 422 20414ldquo NPTF MAX 2 sec 7 sec 422 205

Accessories for probes with bayonet 16 S

421 672 Straight connector for bayonet 16 S for corrugated tubing NW 10421 673 90deg connector for bayonet 16 S for corrugated tubing NW 10421 772 Straight connector for bayonet 16 S with 56 mm cable sealing421 773 90deg connector for bayonet 16 S with 56 mm cable sealing

421 670 Cable with connector 421 672 300 mm

421 018 Cable with connector 421 772 1015 mm421 586 Cable with connector 421 772 1300 mm

421 668 Cable with connector 421 772 3000 mm421 671 Cable with connector 421 673 300 mm

421 891 Cable with connector 421 773 800 mm

421 585 Cable with connector 421 773 1300 mm

421 669 Cable with connector 421 773 5000 mm

7182019 BEDIA Level Monitoring

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page 22

Technical Data for minimum and maximum probes

Voltage rating DC 16 - 32 V

Power consumption typically 7 mA

Switching capacity 3 W (resistive load)

Output minus switching

Voltage drop approx 35 V with 3 W lamp load

Load dump protection 70 V 270 ns

Protection from fault conditions to VDE 0939

Lamp test in-built (approx 3 s)

Fault indicating delay approx 7 s

Free-wheeling diode Inductive loads A free wheeling diode eg 1N4007 has to bemounted at the load

Protection against reverse polarity in-built between plus and minus terminalObserve correct connection of plus and signal terminals

Operating temperature - 40degC to + 120degC

Storage temperature - 40degC to + 120degC

Admissible pressure on sensor 2 bar

Max tightening torque on thread 30 Nm

Mounting attitude optional

Housing brass MS CuZnPb3nickel-plated potential-free

Sensor coating Tefzel

983214

ETFE

Sensor brass MS CuZn39Pb3(immersed in the medium)

Weight approx 100 g

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page 23

Level monitoring in the oil sump

Which are the benefits of a level monitoring system in the oil sump over conventional

pressure and temperature sensorsTemperature sensors indicate very slowly When motor oil is lost e g by tubing breakagethe component temperature can no longer be conducted to the sensors

The lower limit value of oil pressure switches or sensors is set low (low oil pressure with themotor running at no load) At rated motor speed and with too little oil in the oil circuit an oil-airmixture may be produced without that a signal is put out The components are no longer

sufficiently cooled and lubricatedIn the two events described above the output signal is available either too late or even not atall so that the motor will be damaged The level monitoring system however indicates even

before the oil level becomes too low i e as soon as the oil level has fallen 10 to 20 mmbelow the minimum marking on the dipstick Oil pressure and oil temperature indication isalways ensured

Functional diagram

Installation instructions

1 Drain the motor oil

2 Secure the adjustable elbow coupling with the tubing and the sensor support at themotor The sensor housing should be adjustable through oblong holes to determine theminimum point

3 Install the ventilation for the crankcase (e g inspection hole cover)

4 Install and connect the sensor

5 Check for correct electrical function The minimum sensor must indicate now

6 Refill the oil up to the minimum marking on the dipstick

7 Move the sensor and support slowly down until the signal is no longer availableTheswitch point of the sensor is now exactly at the minimum oil level of the motor

8 Move the sensor down by another 10 to 20 mm and fix it The signal bdquooil level too lowldquowill now be put out when the level is approx 10 to 20 mm below the minimum markingon the dipstick

Legend Ref Nr

1 Tubing complete with 350 mm pipecoupling

421 660

Tubing complete with 450 mm pipe

coupling

421 661

Tubing complete with 550 mm pipecoupling

421 659

2 Sensor support 454 134

3 PA pipe available in meters 421 662

4 Level monitoring sensor

Oil MIN 9 - 36 V 421 595Oil MAX 9 - 36 V 421 599

5 withoutcable

withcable

Straight connector 421 672 421 67090deg connector 421 673 421 671

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page 24

Accessories

Plug Connection

1 Straight taper M 27 x 1 orstraight taper bayonet 16 S

2 Gripping seal-ring NW 103 Sleeve nut for NH9-1513

A A Tapered rubber ring must

point into the sleeve nutB B Tube polyflex NW 10Part-No 421 642 M 27 x 1

Part-No 421 672 Bayonet 16 S

Plug Connection

1 Taper M 27 x 1 90deg or

2 Tape 90deg bayonet 16 S3 Gripping seal-ring NW 10

A Tapered rubber ring mustpoint into the sleeve nut

B Tube polyflex NW 10

Part-No 421 643 M 27 x 1Part-No 421 673 Bayonet 16 S

Screw-in Adapter

Outside M 22 x 15Inside M 14 x 15

Part-No 421 640

Braze-in Adapter

Inside 14ldquo NPFTPart-No 421 641

Inside M 14 x 15Part-No 421 644

Cable and Plug

Connection for Probes Approved by Classifica-tion Societies

A Cablem Part-No 421 646

B Plug connectionPart-No 421 645

Plug connection fittedwith 2 m cablePart-No 421 647

Inside M 18 x 15

Part-No 421 648

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page 25

Control and Power Supply Unit 110220 V AC 1224 V DC Order No 421 650

Up to three probes can

be fed from this powersupply unit A relay 3 Amax with one normally

open and one normallyclosed contact is fittedwhich can be used for

additional control tasks A power supply unit isavailable for connection

to 220 V

The voltage for the

relay contacts must notbe taken from thepower supply unit

Housing plastic with control lamps MIN + MAX 110 x 75 x 65 _________________________________________________________________________Control Unit Best-Nr 421 651

for automatic filling and emptying of liquids This unit is designed to control two bdquominimumldquoprobes Probe 2 monitors the maximum liquid level probe 1 the minimum level An outputrelay with a change-over contact is switched automatically for external control tasks

Relays 1 and 2 are switched to conduct when the liquids falls below minimum level Whenthe liquid level reaches maximum relay circuits 1 and 2 are automatically interrupted

LED-display

bull no display liquid level above

bull maximum LED bdquomaximumldquo lights liquid Level is between maximum and minimum andis falling

bull Both LEDrsquos light liquid level is below minimum or is between minimum and maximumand is rising Contacts r1 and r2 are closed

Two bdquominimumldquo minus switching probes with built-in control function are used for this

control The self-control is only visible when both probes are immersed in liquid The signalappears for about 2 seconds when the power supply is switched onFor this period the output (contact r1 and r2) is conducting The voltage for the relay contacts

must not be taken from the power supply unit

Technical Data for Control Unit

Operating 110220 V AC or 1224 V DC Mounting position variable

Relay relay contact t 3 Amax

Temperature - 30 degC to + 75 degC

Protective system IP 54

Control Unit for filling or emptying

Housing plastic with control lamp 110 x 75 x 65 Part No 421 651

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page 26

Probes operating on the capacitive principle

This probe is self-adjustable and can be used for liquids including high viscosity media and

powders

Short description

This BEDIA-Level Sensor is suitable for liquids including high viscosity media and powdersIt operates on the principle of electrical capacitance changes arising when an electrodesurrounded by air is immersed in a media This capacitance change causes an electric

circuit to oscillate thus switching the output transistor off The use of latest state-of-the-arthybrid technology allows the probe and the electronic circuitry to be enclosed in a singlesealed unit

ApplicationThe BEDIA-Level Sensor with itrsquos large temperature range and wide sensitivity adjusting

range is suitable for a wide spread of applications process control petrochemical industrytank level monitoring bottle and crate washing systems in breweries etc

Operating modes

Minimum switching Normally the sensing probe is immersed and the green LED indicates

As the level drops below the probe the green LED extinguishes

Maximum switching Normally the sensing probe is not immersed and the green LED

indicates As the level rises above the probe the green LED extinguishes

Diagram of working method

7182019 BEDIA Level Monitoring

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page 27

Technical data

Circuit voltage 9 - 36 V DC Short circuit and overload

protectedPower consumption normal operation typ17 mA

fault operation typ10 mATime-delay typ01 sec

OutputTransistor plus switching 300 mA (500 mA short-time) short-circuit and overload proof with integral suppression diode

Terminal

configuration

max 1 mm2 screw terminals (AWG 17) Operating

temperature range

- 20degC to + 130degC

- 20degC to + 85degCMaterial - probe envelope PA 12-Gf

(polyamide with glass fibre)- fitting V2A (DIN 14305AISI 303)

- housing cover PA6-3-T (trogamide -transparent)

- O-ring FKM (viton)

Cable length max 300 m

Mounting plane horizontal (by preference Cable gland PG 7Max switchingpoint hysteresis

sensor diameter Mass ca 250 g

Cable automotive cable FLR 3 x 075 black Temp range -50degC to + 150degCBEDIA-part-no for cut goods 422 210

Dimensional diagram

A B BEDIA part no

G 34A 16mm 422 900

frac34ldquo NPT 21mm 422 901

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page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

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page 10

Probe with connector DIN 72 585Environmental protection 69K DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Integralcontrolfunction

Monitoringdelay

Aqueousliquids

Ref No

Oil and fuel

Ref No

Aqueousliquids

Ref No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec 420 400 420 431 420 401 420 432M 14 x 15 MIN 0 sec 7 sec ---- 420 446 ---- ----M 14 x 15 MIN 0 sec 2 sec 420 419 420 447 ---- 420 443M 14 x 15 MAX 0 sec 7 sec 420 402 420 433 420 403 420 434M 14 x 15 MAX 0 sec 0 sec ---- ---- 420 413 420 414

M 14 x 15 MIN 2 sec 60 min ---- 420 444 ---- ----

M 14 x 15 MIN 2 sec 60 sec ---- 420 449 ---- ----M 18 x 15 MIN 2 sec 7 sec 420 404 420 435 420 405 420 436

M 18 x 15 MIN 0 sec 7 sec 420 417 ---- ---- ----M 18 x 15 MAX 0 sec 7 sec 420 406 420 437 420 407 420 438

M 18 x 15 MAX 0 sec 0 sec ---- 420 430 ---- ----

R 38ldquo MAX 0 sec 7 sec 420 420 420 421 ---- ----G 38ldquo MAX 0 sec 0 sec ---- ---- ---- 420 448

14ldquo NPTF MIN 2 sec 7 sec 420 408 420 439 420 409 420 44014ldquo NPTF MIN 0 sec 7 sec 420 418 ---- ---- ----14ldquoNPTF MAX 0 sec 7 sec 420 410 420 441 420 411 420 442

14ldquoNPTF MIN 1 sec 17 sec 420 415 ---- ---- ----Probe with the sensing point 43mm from sensor tip

M 14 x 15 MIN 1 sec 17 sec 420 412

Accessories for probes with connector DIN 72585

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page 11

420 700 Straight connector for bayonet 16 S for corrugated tubing NW10

420 701 90deg connector for bayonet 16 S for corrugated tubing NW 10420 702 Connector 90deg for cable

420 703 Straight connector for cable420 704 Cable with connector 421 672 300 mm

420 705 Cable with connector 420 703 300 mm

420 706 Cable with connector 420 702 1000 mm420 707 Cable with connector 420 703 1000 mm

420 708 Cable with connector 420 702 3000 mm

Technical data see page 12 Installation instruction see page 13

7182019 BEDIA Level Monitoring

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page 12

Probe with connector DIN 43 650

Environmental protection 65 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal output

minus potential

Signal output

plus potentialThread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref NoM 14 x 15 MIN 2 sec 7 sec 420 600 420 620 420 601 420 621

M 14 x 15 MAX 0 sec 7 sec 420 602 420 622 420 603 420 623M 18 x 15 MIN 2 sec 7 sec 420 604 420 624 420 605 420 625M 18 x 15 MAX 0 sec 7 sec 420 606 420 626 420 607 420 62714ldquo NPTF MIN 2 sec 7 sec 420 608 420 628 420 609 420 62914ldquoNPTF MAX 0 sec 7 sec 420 610 420 630 420 611 420 631

R 38ldquo MAX 0 sec 0 sec ---- ---- ---- 420 650

Accessories for probes with connector

421 880 connector M3x35 to DIN 43 650

Technical data see page 12 Installation instruction see page 13

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page 13

Technical data for minimum and maximum probes

Operating voltage 12V-24V (-25+50)

Output current 1 A over the whole operating voltage range

Short-circuit and overload protected overt the entire temperature range

At minus switching probes the minus potential is switched through At plus switching probes the plus potential is switched through

Sensing point 18 mm +- 6 mm

Closed-circuit current consumption approx 6 mA

Voltage spikes 70 V dropping to Un in 270 ns

Medium temperature Water - 30degC to + 110degC

Oil - 30degC to + 125degC

Ambient temperature - 30degC to + 100degC

Storage temperature - 50degC to + 125degC

Response delay see table

Integral control function see table

Shock resistance 50 g half-sine 11 ms

Pressure on sensor up to 25 bar3675 PSI

Reverse polarity protection in-built between plus and minus terminal

Mounting attitude optional

Housing brass CuZn39Pb3

capacitively connected to frame

Weight approx 125 g

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or plus

potential to the minus terminal as otherwise the probes may be destroyed- Plus switching probes Do not connect plus potential to the signal terminal or minus

potential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

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page 14

Installation Instruction for BEDIA Level Monitoring Probes

BEDIA Level Monitoring Probes may be installed in any attitude

Please observe the following instructions when installing the probe

1 To prevent false indication install the probe in a smooth area where it is not affected bysplashing media as may be the case when it is installed in a gear unit or directly in the

motor oil sump

2 To prevent false indication install the sensor at least 15mm from the wall away

Only for water - sensors

3 False indication may also occur if the sensor is mounted from above in a plasticcontainer with the medium carrying no potential In all other mounting attitudes the

housing will be in contact with the medium so as to ensure potential is available

4 Connection Diagram

Minus switching probes Plus switching probes

5 Connection of the cables free wheeling diode

Bayonet 16SThread M27x1

Bayonet 10SL Bayonet DIN 72585Bayonet DIN 43650

Cable

+ A 1 Brown

- B 2 White

S C 3 Green

sensor

wall

gt15mm

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page 15

Probe with bayonet 10 SL to VG 0095342Environmental protection 67 DIN 40050

Probe suitable for aqueous media Connection diagram

Signal outputminus potential

Signal outputplus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref No

M 18 x 15 MIN 1 sec 3 sec 421 903 421 950 421 470 421 471

M 18 x 15 MAX 1 sec 3 sec 421 951 421 952 421 472 421 473M 18 x 15 MIN 2 sec 7 sec ---- 421 984 ---- ----

M 18 x 15 MAX 0 sec 7 sec ---- 421 990 ---- ----

Probe with bayonet 10 SL to VG 0095342

Probe suitable for aqueous media

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Function-control

Integralcontrolfunction

Monitoringdelay

Aqueousliquids

Ref No

Oil and fueRef No

Aqueousliquids

Ref No

Oil and fueRef No

M 18 x 15 MIN 1 sec 3 sec 200 421 906 421 957 421 478 421 479M 18 x 15 MAX 1 sec 3 sec 200 421 958 421 959 421 480 421 481M 18 x 15 MIN 1 sec 3 sec 450 421 960 ---- ---- ----

Accessories for probes with connector Cannon for bajonet 10 SL

421 652 Straight connector for bayonet 10 SL

421 885 Straight connector for bayonet 10 SL421 646 Cable with connector 3 x 1 with license for cut goods

421 653 Cable with connector 421 652 2000 mm

421 657 Cable with connector 421 652 5000 mm421 648 Brazed adapter internal thread M 18 x 15

Technical data see following pages

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page 16

Technical data for minimum and maximum probes

Mechanical dataHousing stainless non-magneticThread M18x15 max tightening torque 30 NmSealing ring (not supplied with the system) 18x22 DIN 7603-CUFitting Cu-Zn alloy material No 20401

Connection see table to VG 0095342Isolation of sensor Tefzel ETFE

Marking function type number manufacturing date voltageMounting attitude optional immersion depth horizontal approx 3 mm plusmn 2 mm

immersion depth vertical approx 20 mm plusmn 6 mmMass approx 200 g Ambient temperature - 30degC to + 125degC

Storage temperature - 55degC to + 125degCMedium temperature - 30degC to + 125degCSinusoidal vibration (peak) 2 - 25 Hz 16mm amplitude

25 - 420 Hz 4 g amplitude

420 - 1330 Hz 5 g amplitude1330 - 2700 Hz 10 g amplitude2700 - 5000 Hz 25 g amplitude

Relative humidity up to 100

Environment Shock (peak)

50 g half-sine 11 ms

EMC IEC 801 (1-4) lt 500 mV rmsdepending on cables

EMC to VG 95373 only with external filterInterference suppression to VDE0871 limit B

Pressure on sensor max 25 bar3675 PSIMedia to be monitored water cooling water seawater oil fuel hydraulic oil

brake fluidDependability The performance is not impaired by small deposits on

the probe

Electric data Protection against reversepolarity

Voltage spikes

between UB and frame

70 V dropping to UN in270

Voltage rating 9 - 36 V Hysteresis of response max plusmn 5 mm aroundthe sensing point

Output open collector switchingminus potential

Response time - bdquolevelacceptableldquo

typically 1 s (05 s to15 s)

Closed-circuit current at24 V

lt 10 mA Response time - bdquolevelunacceptableldquo

Recovery time

typically 3 s (1 s to 4 s)

lt 2 s

Power consumption closed-circuit current plus

switching current

Integral control function see table

Switching capacity max 1 A continuous currentin the voltage range indicated

Terminal connection A = + UB B = - UB C = output signal

Load resistive and inductive Potential of housing

Dielectric strength

physically isolated fromplus UB and minus UB

VDE

0100500 VDC 1 minLoad inductance 500 mH Insulation resistance VDE 0160500 VAC50

Hz 1 minDielectric resistance gt 10 M Ohm

Voltage through lt 0 5 V

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or pluspotential to the minus terminal as otherwise the probes may be destroyed

- Plus switching probes Do not connect plus potential to the signal terminal or minuspotential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

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page 17

Probes operating on the capacitive principle Ex approvedEnvironmental protection 65 DIN 40050

Probe suitable for aqueousmedia

Probe suitable for oil and fuel

Certificate of ConformityEN 50014-1977 + A1 - A5 (VDE 01700171 Part 1187) General requirementsEN 50020-1977 + A1 - A2 (VDE 01700171 Part 7187) intrinsic safety bdquoIldquo

EEx Ia I

Probe for mining applications

Signal outputMinus potential

ThreadMonitoring

displayIntegralcontrolfunction

Monitoringdelay

Voltage (voltDC)

Aqueous liquids

Ref No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec DC 9-13 V 421 934 421 936M 14 x 15 MAX 2 sec 7 sec DC 9-13 V 421 935 421 937M 18 x 15 MIN 2 sec 7 sec DC 9-13 V 421 930 421 932

M 18 x 15 MAX 2 sec 7 sec DC 9-13 V 421 931 421 93314ldquo NPTF MIN 2 sec 7 sec DC 9-13 V 421 938 421 940

14ldquo NPTF MAX 2 sec 7 sec DC 9-13 V 421 939 421 941

UB+ = Brown

Minus = WhiteSignal = Green

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page 18

Technical data for minimum and maximum probes

Operating voltage 9 - 13 V DC

Closed-circuit current consumption approx 6 mA

Sensing point 20 mm plusmn 6 mm from sensor tip

Power output at the signal output open collector Should be limited to max 20 mA

by the user

Storage temperature - 30degC to +125degCOperating temperature - 30degC to +125degC

Fault indicating delay approx 7 sec

Integral control function approx 2 sec

Shock 50 g half-sine 11 ms

Vibration to GL requirements for type certified tests

Admissible pressure on sensor 5 bar735 PSI

Environmental protection IP 65

Protection against reverse polarity in-built between plus and minus terminal

Mounting attitude horizontal preferred

Housing brass CuZn39Pb3

Sensor coating ETFE Tefzelreg

Weight with 10 m cable approx 800 g

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page 19

Certificate of Conformity BVS 94C1001

7182019 BEDIA Level Monitoring

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page 20

Certificate of Conformity BVS 94C1001

7182019 BEDIA Level Monitoring

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page 21

Conductivity probeEnvironmental protection 65 DIN 40050

Probe suitable for aqueous media

Conductivity probe with bayonet 16 S

Signal outputMinus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous liquids

Ref No

M 14 x 15 MIN 2 sec 7 sec 422 200

M 14 x 15 MAX 2 sec 7 sec 422 201

14ldquo NPTF MIN 2 sec 7 sec 422 20414ldquo NPTF MAX 2 sec 7 sec 422 205

Accessories for probes with bayonet 16 S

421 672 Straight connector for bayonet 16 S for corrugated tubing NW 10421 673 90deg connector for bayonet 16 S for corrugated tubing NW 10421 772 Straight connector for bayonet 16 S with 56 mm cable sealing421 773 90deg connector for bayonet 16 S with 56 mm cable sealing

421 670 Cable with connector 421 672 300 mm

421 018 Cable with connector 421 772 1015 mm421 586 Cable with connector 421 772 1300 mm

421 668 Cable with connector 421 772 3000 mm421 671 Cable with connector 421 673 300 mm

421 891 Cable with connector 421 773 800 mm

421 585 Cable with connector 421 773 1300 mm

421 669 Cable with connector 421 773 5000 mm

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page 22

Technical Data for minimum and maximum probes

Voltage rating DC 16 - 32 V

Power consumption typically 7 mA

Switching capacity 3 W (resistive load)

Output minus switching

Voltage drop approx 35 V with 3 W lamp load

Load dump protection 70 V 270 ns

Protection from fault conditions to VDE 0939

Lamp test in-built (approx 3 s)

Fault indicating delay approx 7 s

Free-wheeling diode Inductive loads A free wheeling diode eg 1N4007 has to bemounted at the load

Protection against reverse polarity in-built between plus and minus terminalObserve correct connection of plus and signal terminals

Operating temperature - 40degC to + 120degC

Storage temperature - 40degC to + 120degC

Admissible pressure on sensor 2 bar

Max tightening torque on thread 30 Nm

Mounting attitude optional

Housing brass MS CuZnPb3nickel-plated potential-free

Sensor coating Tefzel

983214

ETFE

Sensor brass MS CuZn39Pb3(immersed in the medium)

Weight approx 100 g

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page 23

Level monitoring in the oil sump

Which are the benefits of a level monitoring system in the oil sump over conventional

pressure and temperature sensorsTemperature sensors indicate very slowly When motor oil is lost e g by tubing breakagethe component temperature can no longer be conducted to the sensors

The lower limit value of oil pressure switches or sensors is set low (low oil pressure with themotor running at no load) At rated motor speed and with too little oil in the oil circuit an oil-airmixture may be produced without that a signal is put out The components are no longer

sufficiently cooled and lubricatedIn the two events described above the output signal is available either too late or even not atall so that the motor will be damaged The level monitoring system however indicates even

before the oil level becomes too low i e as soon as the oil level has fallen 10 to 20 mmbelow the minimum marking on the dipstick Oil pressure and oil temperature indication isalways ensured

Functional diagram

Installation instructions

1 Drain the motor oil

2 Secure the adjustable elbow coupling with the tubing and the sensor support at themotor The sensor housing should be adjustable through oblong holes to determine theminimum point

3 Install the ventilation for the crankcase (e g inspection hole cover)

4 Install and connect the sensor

5 Check for correct electrical function The minimum sensor must indicate now

6 Refill the oil up to the minimum marking on the dipstick

7 Move the sensor and support slowly down until the signal is no longer availableTheswitch point of the sensor is now exactly at the minimum oil level of the motor

8 Move the sensor down by another 10 to 20 mm and fix it The signal bdquooil level too lowldquowill now be put out when the level is approx 10 to 20 mm below the minimum markingon the dipstick

Legend Ref Nr

1 Tubing complete with 350 mm pipecoupling

421 660

Tubing complete with 450 mm pipe

coupling

421 661

Tubing complete with 550 mm pipecoupling

421 659

2 Sensor support 454 134

3 PA pipe available in meters 421 662

4 Level monitoring sensor

Oil MIN 9 - 36 V 421 595Oil MAX 9 - 36 V 421 599

5 withoutcable

withcable

Straight connector 421 672 421 67090deg connector 421 673 421 671

7182019 BEDIA Level Monitoring

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page 24

Accessories

Plug Connection

1 Straight taper M 27 x 1 orstraight taper bayonet 16 S

2 Gripping seal-ring NW 103 Sleeve nut for NH9-1513

A A Tapered rubber ring must

point into the sleeve nutB B Tube polyflex NW 10Part-No 421 642 M 27 x 1

Part-No 421 672 Bayonet 16 S

Plug Connection

1 Taper M 27 x 1 90deg or

2 Tape 90deg bayonet 16 S3 Gripping seal-ring NW 10

A Tapered rubber ring mustpoint into the sleeve nut

B Tube polyflex NW 10

Part-No 421 643 M 27 x 1Part-No 421 673 Bayonet 16 S

Screw-in Adapter

Outside M 22 x 15Inside M 14 x 15

Part-No 421 640

Braze-in Adapter

Inside 14ldquo NPFTPart-No 421 641

Inside M 14 x 15Part-No 421 644

Cable and Plug

Connection for Probes Approved by Classifica-tion Societies

A Cablem Part-No 421 646

B Plug connectionPart-No 421 645

Plug connection fittedwith 2 m cablePart-No 421 647

Inside M 18 x 15

Part-No 421 648

7182019 BEDIA Level Monitoring

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page 25

Control and Power Supply Unit 110220 V AC 1224 V DC Order No 421 650

Up to three probes can

be fed from this powersupply unit A relay 3 Amax with one normally

open and one normallyclosed contact is fittedwhich can be used for

additional control tasks A power supply unit isavailable for connection

to 220 V

The voltage for the

relay contacts must notbe taken from thepower supply unit

Housing plastic with control lamps MIN + MAX 110 x 75 x 65 _________________________________________________________________________Control Unit Best-Nr 421 651

for automatic filling and emptying of liquids This unit is designed to control two bdquominimumldquoprobes Probe 2 monitors the maximum liquid level probe 1 the minimum level An outputrelay with a change-over contact is switched automatically for external control tasks

Relays 1 and 2 are switched to conduct when the liquids falls below minimum level Whenthe liquid level reaches maximum relay circuits 1 and 2 are automatically interrupted

LED-display

bull no display liquid level above

bull maximum LED bdquomaximumldquo lights liquid Level is between maximum and minimum andis falling

bull Both LEDrsquos light liquid level is below minimum or is between minimum and maximumand is rising Contacts r1 and r2 are closed

Two bdquominimumldquo minus switching probes with built-in control function are used for this

control The self-control is only visible when both probes are immersed in liquid The signalappears for about 2 seconds when the power supply is switched onFor this period the output (contact r1 and r2) is conducting The voltage for the relay contacts

must not be taken from the power supply unit

Technical Data for Control Unit

Operating 110220 V AC or 1224 V DC Mounting position variable

Relay relay contact t 3 Amax

Temperature - 30 degC to + 75 degC

Protective system IP 54

Control Unit for filling or emptying

Housing plastic with control lamp 110 x 75 x 65 Part No 421 651

7182019 BEDIA Level Monitoring

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page 26

Probes operating on the capacitive principle

This probe is self-adjustable and can be used for liquids including high viscosity media and

powders

Short description

This BEDIA-Level Sensor is suitable for liquids including high viscosity media and powdersIt operates on the principle of electrical capacitance changes arising when an electrodesurrounded by air is immersed in a media This capacitance change causes an electric

circuit to oscillate thus switching the output transistor off The use of latest state-of-the-arthybrid technology allows the probe and the electronic circuitry to be enclosed in a singlesealed unit

ApplicationThe BEDIA-Level Sensor with itrsquos large temperature range and wide sensitivity adjusting

range is suitable for a wide spread of applications process control petrochemical industrytank level monitoring bottle and crate washing systems in breweries etc

Operating modes

Minimum switching Normally the sensing probe is immersed and the green LED indicates

As the level drops below the probe the green LED extinguishes

Maximum switching Normally the sensing probe is not immersed and the green LED

indicates As the level rises above the probe the green LED extinguishes

Diagram of working method

7182019 BEDIA Level Monitoring

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page 27

Technical data

Circuit voltage 9 - 36 V DC Short circuit and overload

protectedPower consumption normal operation typ17 mA

fault operation typ10 mATime-delay typ01 sec

OutputTransistor plus switching 300 mA (500 mA short-time) short-circuit and overload proof with integral suppression diode

Terminal

configuration

max 1 mm2 screw terminals (AWG 17) Operating

temperature range

- 20degC to + 130degC

- 20degC to + 85degCMaterial - probe envelope PA 12-Gf

(polyamide with glass fibre)- fitting V2A (DIN 14305AISI 303)

- housing cover PA6-3-T (trogamide -transparent)

- O-ring FKM (viton)

Cable length max 300 m

Mounting plane horizontal (by preference Cable gland PG 7Max switchingpoint hysteresis

sensor diameter Mass ca 250 g

Cable automotive cable FLR 3 x 075 black Temp range -50degC to + 150degCBEDIA-part-no for cut goods 422 210

Dimensional diagram

A B BEDIA part no

G 34A 16mm 422 900

frac34ldquo NPT 21mm 422 901

7182019 BEDIA Level Monitoring

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page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

7182019 BEDIA Level Monitoring

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7182019 BEDIA Level Monitoring

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page 11

420 700 Straight connector for bayonet 16 S for corrugated tubing NW10

420 701 90deg connector for bayonet 16 S for corrugated tubing NW 10420 702 Connector 90deg for cable

420 703 Straight connector for cable420 704 Cable with connector 421 672 300 mm

420 705 Cable with connector 420 703 300 mm

420 706 Cable with connector 420 702 1000 mm420 707 Cable with connector 420 703 1000 mm

420 708 Cable with connector 420 702 3000 mm

Technical data see page 12 Installation instruction see page 13

7182019 BEDIA Level Monitoring

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page 12

Probe with connector DIN 43 650

Environmental protection 65 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal output

minus potential

Signal output

plus potentialThread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref NoM 14 x 15 MIN 2 sec 7 sec 420 600 420 620 420 601 420 621

M 14 x 15 MAX 0 sec 7 sec 420 602 420 622 420 603 420 623M 18 x 15 MIN 2 sec 7 sec 420 604 420 624 420 605 420 625M 18 x 15 MAX 0 sec 7 sec 420 606 420 626 420 607 420 62714ldquo NPTF MIN 2 sec 7 sec 420 608 420 628 420 609 420 62914ldquoNPTF MAX 0 sec 7 sec 420 610 420 630 420 611 420 631

R 38ldquo MAX 0 sec 0 sec ---- ---- ---- 420 650

Accessories for probes with connector

421 880 connector M3x35 to DIN 43 650

Technical data see page 12 Installation instruction see page 13

7182019 BEDIA Level Monitoring

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page 13

Technical data for minimum and maximum probes

Operating voltage 12V-24V (-25+50)

Output current 1 A over the whole operating voltage range

Short-circuit and overload protected overt the entire temperature range

At minus switching probes the minus potential is switched through At plus switching probes the plus potential is switched through

Sensing point 18 mm +- 6 mm

Closed-circuit current consumption approx 6 mA

Voltage spikes 70 V dropping to Un in 270 ns

Medium temperature Water - 30degC to + 110degC

Oil - 30degC to + 125degC

Ambient temperature - 30degC to + 100degC

Storage temperature - 50degC to + 125degC

Response delay see table

Integral control function see table

Shock resistance 50 g half-sine 11 ms

Pressure on sensor up to 25 bar3675 PSI

Reverse polarity protection in-built between plus and minus terminal

Mounting attitude optional

Housing brass CuZn39Pb3

capacitively connected to frame

Weight approx 125 g

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or plus

potential to the minus terminal as otherwise the probes may be destroyed- Plus switching probes Do not connect plus potential to the signal terminal or minus

potential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

7182019 BEDIA Level Monitoring

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page 14

Installation Instruction for BEDIA Level Monitoring Probes

BEDIA Level Monitoring Probes may be installed in any attitude

Please observe the following instructions when installing the probe

1 To prevent false indication install the probe in a smooth area where it is not affected bysplashing media as may be the case when it is installed in a gear unit or directly in the

motor oil sump

2 To prevent false indication install the sensor at least 15mm from the wall away

Only for water - sensors

3 False indication may also occur if the sensor is mounted from above in a plasticcontainer with the medium carrying no potential In all other mounting attitudes the

housing will be in contact with the medium so as to ensure potential is available

4 Connection Diagram

Minus switching probes Plus switching probes

5 Connection of the cables free wheeling diode

Bayonet 16SThread M27x1

Bayonet 10SL Bayonet DIN 72585Bayonet DIN 43650

Cable

+ A 1 Brown

- B 2 White

S C 3 Green

sensor

wall

gt15mm

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page 15

Probe with bayonet 10 SL to VG 0095342Environmental protection 67 DIN 40050

Probe suitable for aqueous media Connection diagram

Signal outputminus potential

Signal outputplus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref No

M 18 x 15 MIN 1 sec 3 sec 421 903 421 950 421 470 421 471

M 18 x 15 MAX 1 sec 3 sec 421 951 421 952 421 472 421 473M 18 x 15 MIN 2 sec 7 sec ---- 421 984 ---- ----

M 18 x 15 MAX 0 sec 7 sec ---- 421 990 ---- ----

Probe with bayonet 10 SL to VG 0095342

Probe suitable for aqueous media

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Function-control

Integralcontrolfunction

Monitoringdelay

Aqueousliquids

Ref No

Oil and fueRef No

Aqueousliquids

Ref No

Oil and fueRef No

M 18 x 15 MIN 1 sec 3 sec 200 421 906 421 957 421 478 421 479M 18 x 15 MAX 1 sec 3 sec 200 421 958 421 959 421 480 421 481M 18 x 15 MIN 1 sec 3 sec 450 421 960 ---- ---- ----

Accessories for probes with connector Cannon for bajonet 10 SL

421 652 Straight connector for bayonet 10 SL

421 885 Straight connector for bayonet 10 SL421 646 Cable with connector 3 x 1 with license for cut goods

421 653 Cable with connector 421 652 2000 mm

421 657 Cable with connector 421 652 5000 mm421 648 Brazed adapter internal thread M 18 x 15

Technical data see following pages

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page 16

Technical data for minimum and maximum probes

Mechanical dataHousing stainless non-magneticThread M18x15 max tightening torque 30 NmSealing ring (not supplied with the system) 18x22 DIN 7603-CUFitting Cu-Zn alloy material No 20401

Connection see table to VG 0095342Isolation of sensor Tefzel ETFE

Marking function type number manufacturing date voltageMounting attitude optional immersion depth horizontal approx 3 mm plusmn 2 mm

immersion depth vertical approx 20 mm plusmn 6 mmMass approx 200 g Ambient temperature - 30degC to + 125degC

Storage temperature - 55degC to + 125degCMedium temperature - 30degC to + 125degCSinusoidal vibration (peak) 2 - 25 Hz 16mm amplitude

25 - 420 Hz 4 g amplitude

420 - 1330 Hz 5 g amplitude1330 - 2700 Hz 10 g amplitude2700 - 5000 Hz 25 g amplitude

Relative humidity up to 100

Environment Shock (peak)

50 g half-sine 11 ms

EMC IEC 801 (1-4) lt 500 mV rmsdepending on cables

EMC to VG 95373 only with external filterInterference suppression to VDE0871 limit B

Pressure on sensor max 25 bar3675 PSIMedia to be monitored water cooling water seawater oil fuel hydraulic oil

brake fluidDependability The performance is not impaired by small deposits on

the probe

Electric data Protection against reversepolarity

Voltage spikes

between UB and frame

70 V dropping to UN in270

Voltage rating 9 - 36 V Hysteresis of response max plusmn 5 mm aroundthe sensing point

Output open collector switchingminus potential

Response time - bdquolevelacceptableldquo

typically 1 s (05 s to15 s)

Closed-circuit current at24 V

lt 10 mA Response time - bdquolevelunacceptableldquo

Recovery time

typically 3 s (1 s to 4 s)

lt 2 s

Power consumption closed-circuit current plus

switching current

Integral control function see table

Switching capacity max 1 A continuous currentin the voltage range indicated

Terminal connection A = + UB B = - UB C = output signal

Load resistive and inductive Potential of housing

Dielectric strength

physically isolated fromplus UB and minus UB

VDE

0100500 VDC 1 minLoad inductance 500 mH Insulation resistance VDE 0160500 VAC50

Hz 1 minDielectric resistance gt 10 M Ohm

Voltage through lt 0 5 V

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or pluspotential to the minus terminal as otherwise the probes may be destroyed

- Plus switching probes Do not connect plus potential to the signal terminal or minuspotential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

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page 17

Probes operating on the capacitive principle Ex approvedEnvironmental protection 65 DIN 40050

Probe suitable for aqueousmedia

Probe suitable for oil and fuel

Certificate of ConformityEN 50014-1977 + A1 - A5 (VDE 01700171 Part 1187) General requirementsEN 50020-1977 + A1 - A2 (VDE 01700171 Part 7187) intrinsic safety bdquoIldquo

EEx Ia I

Probe for mining applications

Signal outputMinus potential

ThreadMonitoring

displayIntegralcontrolfunction

Monitoringdelay

Voltage (voltDC)

Aqueous liquids

Ref No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec DC 9-13 V 421 934 421 936M 14 x 15 MAX 2 sec 7 sec DC 9-13 V 421 935 421 937M 18 x 15 MIN 2 sec 7 sec DC 9-13 V 421 930 421 932

M 18 x 15 MAX 2 sec 7 sec DC 9-13 V 421 931 421 93314ldquo NPTF MIN 2 sec 7 sec DC 9-13 V 421 938 421 940

14ldquo NPTF MAX 2 sec 7 sec DC 9-13 V 421 939 421 941

UB+ = Brown

Minus = WhiteSignal = Green

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page 18

Technical data for minimum and maximum probes

Operating voltage 9 - 13 V DC

Closed-circuit current consumption approx 6 mA

Sensing point 20 mm plusmn 6 mm from sensor tip

Power output at the signal output open collector Should be limited to max 20 mA

by the user

Storage temperature - 30degC to +125degCOperating temperature - 30degC to +125degC

Fault indicating delay approx 7 sec

Integral control function approx 2 sec

Shock 50 g half-sine 11 ms

Vibration to GL requirements for type certified tests

Admissible pressure on sensor 5 bar735 PSI

Environmental protection IP 65

Protection against reverse polarity in-built between plus and minus terminal

Mounting attitude horizontal preferred

Housing brass CuZn39Pb3

Sensor coating ETFE Tefzelreg

Weight with 10 m cable approx 800 g

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page 19

Certificate of Conformity BVS 94C1001

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page 20

Certificate of Conformity BVS 94C1001

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page 21

Conductivity probeEnvironmental protection 65 DIN 40050

Probe suitable for aqueous media

Conductivity probe with bayonet 16 S

Signal outputMinus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous liquids

Ref No

M 14 x 15 MIN 2 sec 7 sec 422 200

M 14 x 15 MAX 2 sec 7 sec 422 201

14ldquo NPTF MIN 2 sec 7 sec 422 20414ldquo NPTF MAX 2 sec 7 sec 422 205

Accessories for probes with bayonet 16 S

421 672 Straight connector for bayonet 16 S for corrugated tubing NW 10421 673 90deg connector for bayonet 16 S for corrugated tubing NW 10421 772 Straight connector for bayonet 16 S with 56 mm cable sealing421 773 90deg connector for bayonet 16 S with 56 mm cable sealing

421 670 Cable with connector 421 672 300 mm

421 018 Cable with connector 421 772 1015 mm421 586 Cable with connector 421 772 1300 mm

421 668 Cable with connector 421 772 3000 mm421 671 Cable with connector 421 673 300 mm

421 891 Cable with connector 421 773 800 mm

421 585 Cable with connector 421 773 1300 mm

421 669 Cable with connector 421 773 5000 mm

7182019 BEDIA Level Monitoring

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page 22

Technical Data for minimum and maximum probes

Voltage rating DC 16 - 32 V

Power consumption typically 7 mA

Switching capacity 3 W (resistive load)

Output minus switching

Voltage drop approx 35 V with 3 W lamp load

Load dump protection 70 V 270 ns

Protection from fault conditions to VDE 0939

Lamp test in-built (approx 3 s)

Fault indicating delay approx 7 s

Free-wheeling diode Inductive loads A free wheeling diode eg 1N4007 has to bemounted at the load

Protection against reverse polarity in-built between plus and minus terminalObserve correct connection of plus and signal terminals

Operating temperature - 40degC to + 120degC

Storage temperature - 40degC to + 120degC

Admissible pressure on sensor 2 bar

Max tightening torque on thread 30 Nm

Mounting attitude optional

Housing brass MS CuZnPb3nickel-plated potential-free

Sensor coating Tefzel

983214

ETFE

Sensor brass MS CuZn39Pb3(immersed in the medium)

Weight approx 100 g

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page 23

Level monitoring in the oil sump

Which are the benefits of a level monitoring system in the oil sump over conventional

pressure and temperature sensorsTemperature sensors indicate very slowly When motor oil is lost e g by tubing breakagethe component temperature can no longer be conducted to the sensors

The lower limit value of oil pressure switches or sensors is set low (low oil pressure with themotor running at no load) At rated motor speed and with too little oil in the oil circuit an oil-airmixture may be produced without that a signal is put out The components are no longer

sufficiently cooled and lubricatedIn the two events described above the output signal is available either too late or even not atall so that the motor will be damaged The level monitoring system however indicates even

before the oil level becomes too low i e as soon as the oil level has fallen 10 to 20 mmbelow the minimum marking on the dipstick Oil pressure and oil temperature indication isalways ensured

Functional diagram

Installation instructions

1 Drain the motor oil

2 Secure the adjustable elbow coupling with the tubing and the sensor support at themotor The sensor housing should be adjustable through oblong holes to determine theminimum point

3 Install the ventilation for the crankcase (e g inspection hole cover)

4 Install and connect the sensor

5 Check for correct electrical function The minimum sensor must indicate now

6 Refill the oil up to the minimum marking on the dipstick

7 Move the sensor and support slowly down until the signal is no longer availableTheswitch point of the sensor is now exactly at the minimum oil level of the motor

8 Move the sensor down by another 10 to 20 mm and fix it The signal bdquooil level too lowldquowill now be put out when the level is approx 10 to 20 mm below the minimum markingon the dipstick

Legend Ref Nr

1 Tubing complete with 350 mm pipecoupling

421 660

Tubing complete with 450 mm pipe

coupling

421 661

Tubing complete with 550 mm pipecoupling

421 659

2 Sensor support 454 134

3 PA pipe available in meters 421 662

4 Level monitoring sensor

Oil MIN 9 - 36 V 421 595Oil MAX 9 - 36 V 421 599

5 withoutcable

withcable

Straight connector 421 672 421 67090deg connector 421 673 421 671

7182019 BEDIA Level Monitoring

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page 24

Accessories

Plug Connection

1 Straight taper M 27 x 1 orstraight taper bayonet 16 S

2 Gripping seal-ring NW 103 Sleeve nut for NH9-1513

A A Tapered rubber ring must

point into the sleeve nutB B Tube polyflex NW 10Part-No 421 642 M 27 x 1

Part-No 421 672 Bayonet 16 S

Plug Connection

1 Taper M 27 x 1 90deg or

2 Tape 90deg bayonet 16 S3 Gripping seal-ring NW 10

A Tapered rubber ring mustpoint into the sleeve nut

B Tube polyflex NW 10

Part-No 421 643 M 27 x 1Part-No 421 673 Bayonet 16 S

Screw-in Adapter

Outside M 22 x 15Inside M 14 x 15

Part-No 421 640

Braze-in Adapter

Inside 14ldquo NPFTPart-No 421 641

Inside M 14 x 15Part-No 421 644

Cable and Plug

Connection for Probes Approved by Classifica-tion Societies

A Cablem Part-No 421 646

B Plug connectionPart-No 421 645

Plug connection fittedwith 2 m cablePart-No 421 647

Inside M 18 x 15

Part-No 421 648

7182019 BEDIA Level Monitoring

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page 25

Control and Power Supply Unit 110220 V AC 1224 V DC Order No 421 650

Up to three probes can

be fed from this powersupply unit A relay 3 Amax with one normally

open and one normallyclosed contact is fittedwhich can be used for

additional control tasks A power supply unit isavailable for connection

to 220 V

The voltage for the

relay contacts must notbe taken from thepower supply unit

Housing plastic with control lamps MIN + MAX 110 x 75 x 65 _________________________________________________________________________Control Unit Best-Nr 421 651

for automatic filling and emptying of liquids This unit is designed to control two bdquominimumldquoprobes Probe 2 monitors the maximum liquid level probe 1 the minimum level An outputrelay with a change-over contact is switched automatically for external control tasks

Relays 1 and 2 are switched to conduct when the liquids falls below minimum level Whenthe liquid level reaches maximum relay circuits 1 and 2 are automatically interrupted

LED-display

bull no display liquid level above

bull maximum LED bdquomaximumldquo lights liquid Level is between maximum and minimum andis falling

bull Both LEDrsquos light liquid level is below minimum or is between minimum and maximumand is rising Contacts r1 and r2 are closed

Two bdquominimumldquo minus switching probes with built-in control function are used for this

control The self-control is only visible when both probes are immersed in liquid The signalappears for about 2 seconds when the power supply is switched onFor this period the output (contact r1 and r2) is conducting The voltage for the relay contacts

must not be taken from the power supply unit

Technical Data for Control Unit

Operating 110220 V AC or 1224 V DC Mounting position variable

Relay relay contact t 3 Amax

Temperature - 30 degC to + 75 degC

Protective system IP 54

Control Unit for filling or emptying

Housing plastic with control lamp 110 x 75 x 65 Part No 421 651

7182019 BEDIA Level Monitoring

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page 26

Probes operating on the capacitive principle

This probe is self-adjustable and can be used for liquids including high viscosity media and

powders

Short description

This BEDIA-Level Sensor is suitable for liquids including high viscosity media and powdersIt operates on the principle of electrical capacitance changes arising when an electrodesurrounded by air is immersed in a media This capacitance change causes an electric

circuit to oscillate thus switching the output transistor off The use of latest state-of-the-arthybrid technology allows the probe and the electronic circuitry to be enclosed in a singlesealed unit

ApplicationThe BEDIA-Level Sensor with itrsquos large temperature range and wide sensitivity adjusting

range is suitable for a wide spread of applications process control petrochemical industrytank level monitoring bottle and crate washing systems in breweries etc

Operating modes

Minimum switching Normally the sensing probe is immersed and the green LED indicates

As the level drops below the probe the green LED extinguishes

Maximum switching Normally the sensing probe is not immersed and the green LED

indicates As the level rises above the probe the green LED extinguishes

Diagram of working method

7182019 BEDIA Level Monitoring

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page 27

Technical data

Circuit voltage 9 - 36 V DC Short circuit and overload

protectedPower consumption normal operation typ17 mA

fault operation typ10 mATime-delay typ01 sec

OutputTransistor plus switching 300 mA (500 mA short-time) short-circuit and overload proof with integral suppression diode

Terminal

configuration

max 1 mm2 screw terminals (AWG 17) Operating

temperature range

- 20degC to + 130degC

- 20degC to + 85degCMaterial - probe envelope PA 12-Gf

(polyamide with glass fibre)- fitting V2A (DIN 14305AISI 303)

- housing cover PA6-3-T (trogamide -transparent)

- O-ring FKM (viton)

Cable length max 300 m

Mounting plane horizontal (by preference Cable gland PG 7Max switchingpoint hysteresis

sensor diameter Mass ca 250 g

Cable automotive cable FLR 3 x 075 black Temp range -50degC to + 150degCBEDIA-part-no for cut goods 422 210

Dimensional diagram

A B BEDIA part no

G 34A 16mm 422 900

frac34ldquo NPT 21mm 422 901

7182019 BEDIA Level Monitoring

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page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

7182019 BEDIA Level Monitoring

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page 12

Probe with connector DIN 43 650

Environmental protection 65 DIN 40050

Probe suitable for aqueous media Probe suitable for oil or fuel

Signal output

minus potential

Signal output

plus potentialThread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref NoM 14 x 15 MIN 2 sec 7 sec 420 600 420 620 420 601 420 621

M 14 x 15 MAX 0 sec 7 sec 420 602 420 622 420 603 420 623M 18 x 15 MIN 2 sec 7 sec 420 604 420 624 420 605 420 625M 18 x 15 MAX 0 sec 7 sec 420 606 420 626 420 607 420 62714ldquo NPTF MIN 2 sec 7 sec 420 608 420 628 420 609 420 62914ldquoNPTF MAX 0 sec 7 sec 420 610 420 630 420 611 420 631

R 38ldquo MAX 0 sec 0 sec ---- ---- ---- 420 650

Accessories for probes with connector

421 880 connector M3x35 to DIN 43 650

Technical data see page 12 Installation instruction see page 13

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page 13

Technical data for minimum and maximum probes

Operating voltage 12V-24V (-25+50)

Output current 1 A over the whole operating voltage range

Short-circuit and overload protected overt the entire temperature range

At minus switching probes the minus potential is switched through At plus switching probes the plus potential is switched through

Sensing point 18 mm +- 6 mm

Closed-circuit current consumption approx 6 mA

Voltage spikes 70 V dropping to Un in 270 ns

Medium temperature Water - 30degC to + 110degC

Oil - 30degC to + 125degC

Ambient temperature - 30degC to + 100degC

Storage temperature - 50degC to + 125degC

Response delay see table

Integral control function see table

Shock resistance 50 g half-sine 11 ms

Pressure on sensor up to 25 bar3675 PSI

Reverse polarity protection in-built between plus and minus terminal

Mounting attitude optional

Housing brass CuZn39Pb3

capacitively connected to frame

Weight approx 125 g

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or plus

potential to the minus terminal as otherwise the probes may be destroyed- Plus switching probes Do not connect plus potential to the signal terminal or minus

potential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

7182019 BEDIA Level Monitoring

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page 14

Installation Instruction for BEDIA Level Monitoring Probes

BEDIA Level Monitoring Probes may be installed in any attitude

Please observe the following instructions when installing the probe

1 To prevent false indication install the probe in a smooth area where it is not affected bysplashing media as may be the case when it is installed in a gear unit or directly in the

motor oil sump

2 To prevent false indication install the sensor at least 15mm from the wall away

Only for water - sensors

3 False indication may also occur if the sensor is mounted from above in a plasticcontainer with the medium carrying no potential In all other mounting attitudes the

housing will be in contact with the medium so as to ensure potential is available

4 Connection Diagram

Minus switching probes Plus switching probes

5 Connection of the cables free wheeling diode

Bayonet 16SThread M27x1

Bayonet 10SL Bayonet DIN 72585Bayonet DIN 43650

Cable

+ A 1 Brown

- B 2 White

S C 3 Green

sensor

wall

gt15mm

7182019 BEDIA Level Monitoring

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page 15

Probe with bayonet 10 SL to VG 0095342Environmental protection 67 DIN 40050

Probe suitable for aqueous media Connection diagram

Signal outputminus potential

Signal outputplus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref No

M 18 x 15 MIN 1 sec 3 sec 421 903 421 950 421 470 421 471

M 18 x 15 MAX 1 sec 3 sec 421 951 421 952 421 472 421 473M 18 x 15 MIN 2 sec 7 sec ---- 421 984 ---- ----

M 18 x 15 MAX 0 sec 7 sec ---- 421 990 ---- ----

Probe with bayonet 10 SL to VG 0095342

Probe suitable for aqueous media

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Function-control

Integralcontrolfunction

Monitoringdelay

Aqueousliquids

Ref No

Oil and fueRef No

Aqueousliquids

Ref No

Oil and fueRef No

M 18 x 15 MIN 1 sec 3 sec 200 421 906 421 957 421 478 421 479M 18 x 15 MAX 1 sec 3 sec 200 421 958 421 959 421 480 421 481M 18 x 15 MIN 1 sec 3 sec 450 421 960 ---- ---- ----

Accessories for probes with connector Cannon for bajonet 10 SL

421 652 Straight connector for bayonet 10 SL

421 885 Straight connector for bayonet 10 SL421 646 Cable with connector 3 x 1 with license for cut goods

421 653 Cable with connector 421 652 2000 mm

421 657 Cable with connector 421 652 5000 mm421 648 Brazed adapter internal thread M 18 x 15

Technical data see following pages

7182019 BEDIA Level Monitoring

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page 16

Technical data for minimum and maximum probes

Mechanical dataHousing stainless non-magneticThread M18x15 max tightening torque 30 NmSealing ring (not supplied with the system) 18x22 DIN 7603-CUFitting Cu-Zn alloy material No 20401

Connection see table to VG 0095342Isolation of sensor Tefzel ETFE

Marking function type number manufacturing date voltageMounting attitude optional immersion depth horizontal approx 3 mm plusmn 2 mm

immersion depth vertical approx 20 mm plusmn 6 mmMass approx 200 g Ambient temperature - 30degC to + 125degC

Storage temperature - 55degC to + 125degCMedium temperature - 30degC to + 125degCSinusoidal vibration (peak) 2 - 25 Hz 16mm amplitude

25 - 420 Hz 4 g amplitude

420 - 1330 Hz 5 g amplitude1330 - 2700 Hz 10 g amplitude2700 - 5000 Hz 25 g amplitude

Relative humidity up to 100

Environment Shock (peak)

50 g half-sine 11 ms

EMC IEC 801 (1-4) lt 500 mV rmsdepending on cables

EMC to VG 95373 only with external filterInterference suppression to VDE0871 limit B

Pressure on sensor max 25 bar3675 PSIMedia to be monitored water cooling water seawater oil fuel hydraulic oil

brake fluidDependability The performance is not impaired by small deposits on

the probe

Electric data Protection against reversepolarity

Voltage spikes

between UB and frame

70 V dropping to UN in270

Voltage rating 9 - 36 V Hysteresis of response max plusmn 5 mm aroundthe sensing point

Output open collector switchingminus potential

Response time - bdquolevelacceptableldquo

typically 1 s (05 s to15 s)

Closed-circuit current at24 V

lt 10 mA Response time - bdquolevelunacceptableldquo

Recovery time

typically 3 s (1 s to 4 s)

lt 2 s

Power consumption closed-circuit current plus

switching current

Integral control function see table

Switching capacity max 1 A continuous currentin the voltage range indicated

Terminal connection A = + UB B = - UB C = output signal

Load resistive and inductive Potential of housing

Dielectric strength

physically isolated fromplus UB and minus UB

VDE

0100500 VDC 1 minLoad inductance 500 mH Insulation resistance VDE 0160500 VAC50

Hz 1 minDielectric resistance gt 10 M Ohm

Voltage through lt 0 5 V

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or pluspotential to the minus terminal as otherwise the probes may be destroyed

- Plus switching probes Do not connect plus potential to the signal terminal or minuspotential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

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page 17

Probes operating on the capacitive principle Ex approvedEnvironmental protection 65 DIN 40050

Probe suitable for aqueousmedia

Probe suitable for oil and fuel

Certificate of ConformityEN 50014-1977 + A1 - A5 (VDE 01700171 Part 1187) General requirementsEN 50020-1977 + A1 - A2 (VDE 01700171 Part 7187) intrinsic safety bdquoIldquo

EEx Ia I

Probe for mining applications

Signal outputMinus potential

ThreadMonitoring

displayIntegralcontrolfunction

Monitoringdelay

Voltage (voltDC)

Aqueous liquids

Ref No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec DC 9-13 V 421 934 421 936M 14 x 15 MAX 2 sec 7 sec DC 9-13 V 421 935 421 937M 18 x 15 MIN 2 sec 7 sec DC 9-13 V 421 930 421 932

M 18 x 15 MAX 2 sec 7 sec DC 9-13 V 421 931 421 93314ldquo NPTF MIN 2 sec 7 sec DC 9-13 V 421 938 421 940

14ldquo NPTF MAX 2 sec 7 sec DC 9-13 V 421 939 421 941

UB+ = Brown

Minus = WhiteSignal = Green

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page 18

Technical data for minimum and maximum probes

Operating voltage 9 - 13 V DC

Closed-circuit current consumption approx 6 mA

Sensing point 20 mm plusmn 6 mm from sensor tip

Power output at the signal output open collector Should be limited to max 20 mA

by the user

Storage temperature - 30degC to +125degCOperating temperature - 30degC to +125degC

Fault indicating delay approx 7 sec

Integral control function approx 2 sec

Shock 50 g half-sine 11 ms

Vibration to GL requirements for type certified tests

Admissible pressure on sensor 5 bar735 PSI

Environmental protection IP 65

Protection against reverse polarity in-built between plus and minus terminal

Mounting attitude horizontal preferred

Housing brass CuZn39Pb3

Sensor coating ETFE Tefzelreg

Weight with 10 m cable approx 800 g

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page 19

Certificate of Conformity BVS 94C1001

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page 20

Certificate of Conformity BVS 94C1001

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page 21

Conductivity probeEnvironmental protection 65 DIN 40050

Probe suitable for aqueous media

Conductivity probe with bayonet 16 S

Signal outputMinus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous liquids

Ref No

M 14 x 15 MIN 2 sec 7 sec 422 200

M 14 x 15 MAX 2 sec 7 sec 422 201

14ldquo NPTF MIN 2 sec 7 sec 422 20414ldquo NPTF MAX 2 sec 7 sec 422 205

Accessories for probes with bayonet 16 S

421 672 Straight connector for bayonet 16 S for corrugated tubing NW 10421 673 90deg connector for bayonet 16 S for corrugated tubing NW 10421 772 Straight connector for bayonet 16 S with 56 mm cable sealing421 773 90deg connector for bayonet 16 S with 56 mm cable sealing

421 670 Cable with connector 421 672 300 mm

421 018 Cable with connector 421 772 1015 mm421 586 Cable with connector 421 772 1300 mm

421 668 Cable with connector 421 772 3000 mm421 671 Cable with connector 421 673 300 mm

421 891 Cable with connector 421 773 800 mm

421 585 Cable with connector 421 773 1300 mm

421 669 Cable with connector 421 773 5000 mm

7182019 BEDIA Level Monitoring

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page 22

Technical Data for minimum and maximum probes

Voltage rating DC 16 - 32 V

Power consumption typically 7 mA

Switching capacity 3 W (resistive load)

Output minus switching

Voltage drop approx 35 V with 3 W lamp load

Load dump protection 70 V 270 ns

Protection from fault conditions to VDE 0939

Lamp test in-built (approx 3 s)

Fault indicating delay approx 7 s

Free-wheeling diode Inductive loads A free wheeling diode eg 1N4007 has to bemounted at the load

Protection against reverse polarity in-built between plus and minus terminalObserve correct connection of plus and signal terminals

Operating temperature - 40degC to + 120degC

Storage temperature - 40degC to + 120degC

Admissible pressure on sensor 2 bar

Max tightening torque on thread 30 Nm

Mounting attitude optional

Housing brass MS CuZnPb3nickel-plated potential-free

Sensor coating Tefzel

983214

ETFE

Sensor brass MS CuZn39Pb3(immersed in the medium)

Weight approx 100 g

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page 23

Level monitoring in the oil sump

Which are the benefits of a level monitoring system in the oil sump over conventional

pressure and temperature sensorsTemperature sensors indicate very slowly When motor oil is lost e g by tubing breakagethe component temperature can no longer be conducted to the sensors

The lower limit value of oil pressure switches or sensors is set low (low oil pressure with themotor running at no load) At rated motor speed and with too little oil in the oil circuit an oil-airmixture may be produced without that a signal is put out The components are no longer

sufficiently cooled and lubricatedIn the two events described above the output signal is available either too late or even not atall so that the motor will be damaged The level monitoring system however indicates even

before the oil level becomes too low i e as soon as the oil level has fallen 10 to 20 mmbelow the minimum marking on the dipstick Oil pressure and oil temperature indication isalways ensured

Functional diagram

Installation instructions

1 Drain the motor oil

2 Secure the adjustable elbow coupling with the tubing and the sensor support at themotor The sensor housing should be adjustable through oblong holes to determine theminimum point

3 Install the ventilation for the crankcase (e g inspection hole cover)

4 Install and connect the sensor

5 Check for correct electrical function The minimum sensor must indicate now

6 Refill the oil up to the minimum marking on the dipstick

7 Move the sensor and support slowly down until the signal is no longer availableTheswitch point of the sensor is now exactly at the minimum oil level of the motor

8 Move the sensor down by another 10 to 20 mm and fix it The signal bdquooil level too lowldquowill now be put out when the level is approx 10 to 20 mm below the minimum markingon the dipstick

Legend Ref Nr

1 Tubing complete with 350 mm pipecoupling

421 660

Tubing complete with 450 mm pipe

coupling

421 661

Tubing complete with 550 mm pipecoupling

421 659

2 Sensor support 454 134

3 PA pipe available in meters 421 662

4 Level monitoring sensor

Oil MIN 9 - 36 V 421 595Oil MAX 9 - 36 V 421 599

5 withoutcable

withcable

Straight connector 421 672 421 67090deg connector 421 673 421 671

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page 24

Accessories

Plug Connection

1 Straight taper M 27 x 1 orstraight taper bayonet 16 S

2 Gripping seal-ring NW 103 Sleeve nut for NH9-1513

A A Tapered rubber ring must

point into the sleeve nutB B Tube polyflex NW 10Part-No 421 642 M 27 x 1

Part-No 421 672 Bayonet 16 S

Plug Connection

1 Taper M 27 x 1 90deg or

2 Tape 90deg bayonet 16 S3 Gripping seal-ring NW 10

A Tapered rubber ring mustpoint into the sleeve nut

B Tube polyflex NW 10

Part-No 421 643 M 27 x 1Part-No 421 673 Bayonet 16 S

Screw-in Adapter

Outside M 22 x 15Inside M 14 x 15

Part-No 421 640

Braze-in Adapter

Inside 14ldquo NPFTPart-No 421 641

Inside M 14 x 15Part-No 421 644

Cable and Plug

Connection for Probes Approved by Classifica-tion Societies

A Cablem Part-No 421 646

B Plug connectionPart-No 421 645

Plug connection fittedwith 2 m cablePart-No 421 647

Inside M 18 x 15

Part-No 421 648

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page 25

Control and Power Supply Unit 110220 V AC 1224 V DC Order No 421 650

Up to three probes can

be fed from this powersupply unit A relay 3 Amax with one normally

open and one normallyclosed contact is fittedwhich can be used for

additional control tasks A power supply unit isavailable for connection

to 220 V

The voltage for the

relay contacts must notbe taken from thepower supply unit

Housing plastic with control lamps MIN + MAX 110 x 75 x 65 _________________________________________________________________________Control Unit Best-Nr 421 651

for automatic filling and emptying of liquids This unit is designed to control two bdquominimumldquoprobes Probe 2 monitors the maximum liquid level probe 1 the minimum level An outputrelay with a change-over contact is switched automatically for external control tasks

Relays 1 and 2 are switched to conduct when the liquids falls below minimum level Whenthe liquid level reaches maximum relay circuits 1 and 2 are automatically interrupted

LED-display

bull no display liquid level above

bull maximum LED bdquomaximumldquo lights liquid Level is between maximum and minimum andis falling

bull Both LEDrsquos light liquid level is below minimum or is between minimum and maximumand is rising Contacts r1 and r2 are closed

Two bdquominimumldquo minus switching probes with built-in control function are used for this

control The self-control is only visible when both probes are immersed in liquid The signalappears for about 2 seconds when the power supply is switched onFor this period the output (contact r1 and r2) is conducting The voltage for the relay contacts

must not be taken from the power supply unit

Technical Data for Control Unit

Operating 110220 V AC or 1224 V DC Mounting position variable

Relay relay contact t 3 Amax

Temperature - 30 degC to + 75 degC

Protective system IP 54

Control Unit for filling or emptying

Housing plastic with control lamp 110 x 75 x 65 Part No 421 651

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page 26

Probes operating on the capacitive principle

This probe is self-adjustable and can be used for liquids including high viscosity media and

powders

Short description

This BEDIA-Level Sensor is suitable for liquids including high viscosity media and powdersIt operates on the principle of electrical capacitance changes arising when an electrodesurrounded by air is immersed in a media This capacitance change causes an electric

circuit to oscillate thus switching the output transistor off The use of latest state-of-the-arthybrid technology allows the probe and the electronic circuitry to be enclosed in a singlesealed unit

ApplicationThe BEDIA-Level Sensor with itrsquos large temperature range and wide sensitivity adjusting

range is suitable for a wide spread of applications process control petrochemical industrytank level monitoring bottle and crate washing systems in breweries etc

Operating modes

Minimum switching Normally the sensing probe is immersed and the green LED indicates

As the level drops below the probe the green LED extinguishes

Maximum switching Normally the sensing probe is not immersed and the green LED

indicates As the level rises above the probe the green LED extinguishes

Diagram of working method

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page 27

Technical data

Circuit voltage 9 - 36 V DC Short circuit and overload

protectedPower consumption normal operation typ17 mA

fault operation typ10 mATime-delay typ01 sec

OutputTransistor plus switching 300 mA (500 mA short-time) short-circuit and overload proof with integral suppression diode

Terminal

configuration

max 1 mm2 screw terminals (AWG 17) Operating

temperature range

- 20degC to + 130degC

- 20degC to + 85degCMaterial - probe envelope PA 12-Gf

(polyamide with glass fibre)- fitting V2A (DIN 14305AISI 303)

- housing cover PA6-3-T (trogamide -transparent)

- O-ring FKM (viton)

Cable length max 300 m

Mounting plane horizontal (by preference Cable gland PG 7Max switchingpoint hysteresis

sensor diameter Mass ca 250 g

Cable automotive cable FLR 3 x 075 black Temp range -50degC to + 150degCBEDIA-part-no for cut goods 422 210

Dimensional diagram

A B BEDIA part no

G 34A 16mm 422 900

frac34ldquo NPT 21mm 422 901

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page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

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page 13

Technical data for minimum and maximum probes

Operating voltage 12V-24V (-25+50)

Output current 1 A over the whole operating voltage range

Short-circuit and overload protected overt the entire temperature range

At minus switching probes the minus potential is switched through At plus switching probes the plus potential is switched through

Sensing point 18 mm +- 6 mm

Closed-circuit current consumption approx 6 mA

Voltage spikes 70 V dropping to Un in 270 ns

Medium temperature Water - 30degC to + 110degC

Oil - 30degC to + 125degC

Ambient temperature - 30degC to + 100degC

Storage temperature - 50degC to + 125degC

Response delay see table

Integral control function see table

Shock resistance 50 g half-sine 11 ms

Pressure on sensor up to 25 bar3675 PSI

Reverse polarity protection in-built between plus and minus terminal

Mounting attitude optional

Housing brass CuZn39Pb3

capacitively connected to frame

Weight approx 125 g

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or plus

potential to the minus terminal as otherwise the probes may be destroyed- Plus switching probes Do not connect plus potential to the signal terminal or minus

potential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

7182019 BEDIA Level Monitoring

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page 14

Installation Instruction for BEDIA Level Monitoring Probes

BEDIA Level Monitoring Probes may be installed in any attitude

Please observe the following instructions when installing the probe

1 To prevent false indication install the probe in a smooth area where it is not affected bysplashing media as may be the case when it is installed in a gear unit or directly in the

motor oil sump

2 To prevent false indication install the sensor at least 15mm from the wall away

Only for water - sensors

3 False indication may also occur if the sensor is mounted from above in a plasticcontainer with the medium carrying no potential In all other mounting attitudes the

housing will be in contact with the medium so as to ensure potential is available

4 Connection Diagram

Minus switching probes Plus switching probes

5 Connection of the cables free wheeling diode

Bayonet 16SThread M27x1

Bayonet 10SL Bayonet DIN 72585Bayonet DIN 43650

Cable

+ A 1 Brown

- B 2 White

S C 3 Green

sensor

wall

gt15mm

7182019 BEDIA Level Monitoring

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page 15

Probe with bayonet 10 SL to VG 0095342Environmental protection 67 DIN 40050

Probe suitable for aqueous media Connection diagram

Signal outputminus potential

Signal outputplus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref No

M 18 x 15 MIN 1 sec 3 sec 421 903 421 950 421 470 421 471

M 18 x 15 MAX 1 sec 3 sec 421 951 421 952 421 472 421 473M 18 x 15 MIN 2 sec 7 sec ---- 421 984 ---- ----

M 18 x 15 MAX 0 sec 7 sec ---- 421 990 ---- ----

Probe with bayonet 10 SL to VG 0095342

Probe suitable for aqueous media

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Function-control

Integralcontrolfunction

Monitoringdelay

Aqueousliquids

Ref No

Oil and fueRef No

Aqueousliquids

Ref No

Oil and fueRef No

M 18 x 15 MIN 1 sec 3 sec 200 421 906 421 957 421 478 421 479M 18 x 15 MAX 1 sec 3 sec 200 421 958 421 959 421 480 421 481M 18 x 15 MIN 1 sec 3 sec 450 421 960 ---- ---- ----

Accessories for probes with connector Cannon for bajonet 10 SL

421 652 Straight connector for bayonet 10 SL

421 885 Straight connector for bayonet 10 SL421 646 Cable with connector 3 x 1 with license for cut goods

421 653 Cable with connector 421 652 2000 mm

421 657 Cable with connector 421 652 5000 mm421 648 Brazed adapter internal thread M 18 x 15

Technical data see following pages

7182019 BEDIA Level Monitoring

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page 16

Technical data for minimum and maximum probes

Mechanical dataHousing stainless non-magneticThread M18x15 max tightening torque 30 NmSealing ring (not supplied with the system) 18x22 DIN 7603-CUFitting Cu-Zn alloy material No 20401

Connection see table to VG 0095342Isolation of sensor Tefzel ETFE

Marking function type number manufacturing date voltageMounting attitude optional immersion depth horizontal approx 3 mm plusmn 2 mm

immersion depth vertical approx 20 mm plusmn 6 mmMass approx 200 g Ambient temperature - 30degC to + 125degC

Storage temperature - 55degC to + 125degCMedium temperature - 30degC to + 125degCSinusoidal vibration (peak) 2 - 25 Hz 16mm amplitude

25 - 420 Hz 4 g amplitude

420 - 1330 Hz 5 g amplitude1330 - 2700 Hz 10 g amplitude2700 - 5000 Hz 25 g amplitude

Relative humidity up to 100

Environment Shock (peak)

50 g half-sine 11 ms

EMC IEC 801 (1-4) lt 500 mV rmsdepending on cables

EMC to VG 95373 only with external filterInterference suppression to VDE0871 limit B

Pressure on sensor max 25 bar3675 PSIMedia to be monitored water cooling water seawater oil fuel hydraulic oil

brake fluidDependability The performance is not impaired by small deposits on

the probe

Electric data Protection against reversepolarity

Voltage spikes

between UB and frame

70 V dropping to UN in270

Voltage rating 9 - 36 V Hysteresis of response max plusmn 5 mm aroundthe sensing point

Output open collector switchingminus potential

Response time - bdquolevelacceptableldquo

typically 1 s (05 s to15 s)

Closed-circuit current at24 V

lt 10 mA Response time - bdquolevelunacceptableldquo

Recovery time

typically 3 s (1 s to 4 s)

lt 2 s

Power consumption closed-circuit current plus

switching current

Integral control function see table

Switching capacity max 1 A continuous currentin the voltage range indicated

Terminal connection A = + UB B = - UB C = output signal

Load resistive and inductive Potential of housing

Dielectric strength

physically isolated fromplus UB and minus UB

VDE

0100500 VDC 1 minLoad inductance 500 mH Insulation resistance VDE 0160500 VAC50

Hz 1 minDielectric resistance gt 10 M Ohm

Voltage through lt 0 5 V

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or pluspotential to the minus terminal as otherwise the probes may be destroyed

- Plus switching probes Do not connect plus potential to the signal terminal or minuspotential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

7182019 BEDIA Level Monitoring

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page 17

Probes operating on the capacitive principle Ex approvedEnvironmental protection 65 DIN 40050

Probe suitable for aqueousmedia

Probe suitable for oil and fuel

Certificate of ConformityEN 50014-1977 + A1 - A5 (VDE 01700171 Part 1187) General requirementsEN 50020-1977 + A1 - A2 (VDE 01700171 Part 7187) intrinsic safety bdquoIldquo

EEx Ia I

Probe for mining applications

Signal outputMinus potential

ThreadMonitoring

displayIntegralcontrolfunction

Monitoringdelay

Voltage (voltDC)

Aqueous liquids

Ref No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec DC 9-13 V 421 934 421 936M 14 x 15 MAX 2 sec 7 sec DC 9-13 V 421 935 421 937M 18 x 15 MIN 2 sec 7 sec DC 9-13 V 421 930 421 932

M 18 x 15 MAX 2 sec 7 sec DC 9-13 V 421 931 421 93314ldquo NPTF MIN 2 sec 7 sec DC 9-13 V 421 938 421 940

14ldquo NPTF MAX 2 sec 7 sec DC 9-13 V 421 939 421 941

UB+ = Brown

Minus = WhiteSignal = Green

7182019 BEDIA Level Monitoring

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page 18

Technical data for minimum and maximum probes

Operating voltage 9 - 13 V DC

Closed-circuit current consumption approx 6 mA

Sensing point 20 mm plusmn 6 mm from sensor tip

Power output at the signal output open collector Should be limited to max 20 mA

by the user

Storage temperature - 30degC to +125degCOperating temperature - 30degC to +125degC

Fault indicating delay approx 7 sec

Integral control function approx 2 sec

Shock 50 g half-sine 11 ms

Vibration to GL requirements for type certified tests

Admissible pressure on sensor 5 bar735 PSI

Environmental protection IP 65

Protection against reverse polarity in-built between plus and minus terminal

Mounting attitude horizontal preferred

Housing brass CuZn39Pb3

Sensor coating ETFE Tefzelreg

Weight with 10 m cable approx 800 g

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 1929

page 19

Certificate of Conformity BVS 94C1001

7182019 BEDIA Level Monitoring

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page 20

Certificate of Conformity BVS 94C1001

7182019 BEDIA Level Monitoring

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page 21

Conductivity probeEnvironmental protection 65 DIN 40050

Probe suitable for aqueous media

Conductivity probe with bayonet 16 S

Signal outputMinus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous liquids

Ref No

M 14 x 15 MIN 2 sec 7 sec 422 200

M 14 x 15 MAX 2 sec 7 sec 422 201

14ldquo NPTF MIN 2 sec 7 sec 422 20414ldquo NPTF MAX 2 sec 7 sec 422 205

Accessories for probes with bayonet 16 S

421 672 Straight connector for bayonet 16 S for corrugated tubing NW 10421 673 90deg connector for bayonet 16 S for corrugated tubing NW 10421 772 Straight connector for bayonet 16 S with 56 mm cable sealing421 773 90deg connector for bayonet 16 S with 56 mm cable sealing

421 670 Cable with connector 421 672 300 mm

421 018 Cable with connector 421 772 1015 mm421 586 Cable with connector 421 772 1300 mm

421 668 Cable with connector 421 772 3000 mm421 671 Cable with connector 421 673 300 mm

421 891 Cable with connector 421 773 800 mm

421 585 Cable with connector 421 773 1300 mm

421 669 Cable with connector 421 773 5000 mm

7182019 BEDIA Level Monitoring

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page 22

Technical Data for minimum and maximum probes

Voltage rating DC 16 - 32 V

Power consumption typically 7 mA

Switching capacity 3 W (resistive load)

Output minus switching

Voltage drop approx 35 V with 3 W lamp load

Load dump protection 70 V 270 ns

Protection from fault conditions to VDE 0939

Lamp test in-built (approx 3 s)

Fault indicating delay approx 7 s

Free-wheeling diode Inductive loads A free wheeling diode eg 1N4007 has to bemounted at the load

Protection against reverse polarity in-built between plus and minus terminalObserve correct connection of plus and signal terminals

Operating temperature - 40degC to + 120degC

Storage temperature - 40degC to + 120degC

Admissible pressure on sensor 2 bar

Max tightening torque on thread 30 Nm

Mounting attitude optional

Housing brass MS CuZnPb3nickel-plated potential-free

Sensor coating Tefzel

983214

ETFE

Sensor brass MS CuZn39Pb3(immersed in the medium)

Weight approx 100 g

7182019 BEDIA Level Monitoring

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page 23

Level monitoring in the oil sump

Which are the benefits of a level monitoring system in the oil sump over conventional

pressure and temperature sensorsTemperature sensors indicate very slowly When motor oil is lost e g by tubing breakagethe component temperature can no longer be conducted to the sensors

The lower limit value of oil pressure switches or sensors is set low (low oil pressure with themotor running at no load) At rated motor speed and with too little oil in the oil circuit an oil-airmixture may be produced without that a signal is put out The components are no longer

sufficiently cooled and lubricatedIn the two events described above the output signal is available either too late or even not atall so that the motor will be damaged The level monitoring system however indicates even

before the oil level becomes too low i e as soon as the oil level has fallen 10 to 20 mmbelow the minimum marking on the dipstick Oil pressure and oil temperature indication isalways ensured

Functional diagram

Installation instructions

1 Drain the motor oil

2 Secure the adjustable elbow coupling with the tubing and the sensor support at themotor The sensor housing should be adjustable through oblong holes to determine theminimum point

3 Install the ventilation for the crankcase (e g inspection hole cover)

4 Install and connect the sensor

5 Check for correct electrical function The minimum sensor must indicate now

6 Refill the oil up to the minimum marking on the dipstick

7 Move the sensor and support slowly down until the signal is no longer availableTheswitch point of the sensor is now exactly at the minimum oil level of the motor

8 Move the sensor down by another 10 to 20 mm and fix it The signal bdquooil level too lowldquowill now be put out when the level is approx 10 to 20 mm below the minimum markingon the dipstick

Legend Ref Nr

1 Tubing complete with 350 mm pipecoupling

421 660

Tubing complete with 450 mm pipe

coupling

421 661

Tubing complete with 550 mm pipecoupling

421 659

2 Sensor support 454 134

3 PA pipe available in meters 421 662

4 Level monitoring sensor

Oil MIN 9 - 36 V 421 595Oil MAX 9 - 36 V 421 599

5 withoutcable

withcable

Straight connector 421 672 421 67090deg connector 421 673 421 671

7182019 BEDIA Level Monitoring

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page 24

Accessories

Plug Connection

1 Straight taper M 27 x 1 orstraight taper bayonet 16 S

2 Gripping seal-ring NW 103 Sleeve nut for NH9-1513

A A Tapered rubber ring must

point into the sleeve nutB B Tube polyflex NW 10Part-No 421 642 M 27 x 1

Part-No 421 672 Bayonet 16 S

Plug Connection

1 Taper M 27 x 1 90deg or

2 Tape 90deg bayonet 16 S3 Gripping seal-ring NW 10

A Tapered rubber ring mustpoint into the sleeve nut

B Tube polyflex NW 10

Part-No 421 643 M 27 x 1Part-No 421 673 Bayonet 16 S

Screw-in Adapter

Outside M 22 x 15Inside M 14 x 15

Part-No 421 640

Braze-in Adapter

Inside 14ldquo NPFTPart-No 421 641

Inside M 14 x 15Part-No 421 644

Cable and Plug

Connection for Probes Approved by Classifica-tion Societies

A Cablem Part-No 421 646

B Plug connectionPart-No 421 645

Plug connection fittedwith 2 m cablePart-No 421 647

Inside M 18 x 15

Part-No 421 648

7182019 BEDIA Level Monitoring

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page 25

Control and Power Supply Unit 110220 V AC 1224 V DC Order No 421 650

Up to three probes can

be fed from this powersupply unit A relay 3 Amax with one normally

open and one normallyclosed contact is fittedwhich can be used for

additional control tasks A power supply unit isavailable for connection

to 220 V

The voltage for the

relay contacts must notbe taken from thepower supply unit

Housing plastic with control lamps MIN + MAX 110 x 75 x 65 _________________________________________________________________________Control Unit Best-Nr 421 651

for automatic filling and emptying of liquids This unit is designed to control two bdquominimumldquoprobes Probe 2 monitors the maximum liquid level probe 1 the minimum level An outputrelay with a change-over contact is switched automatically for external control tasks

Relays 1 and 2 are switched to conduct when the liquids falls below minimum level Whenthe liquid level reaches maximum relay circuits 1 and 2 are automatically interrupted

LED-display

bull no display liquid level above

bull maximum LED bdquomaximumldquo lights liquid Level is between maximum and minimum andis falling

bull Both LEDrsquos light liquid level is below minimum or is between minimum and maximumand is rising Contacts r1 and r2 are closed

Two bdquominimumldquo minus switching probes with built-in control function are used for this

control The self-control is only visible when both probes are immersed in liquid The signalappears for about 2 seconds when the power supply is switched onFor this period the output (contact r1 and r2) is conducting The voltage for the relay contacts

must not be taken from the power supply unit

Technical Data for Control Unit

Operating 110220 V AC or 1224 V DC Mounting position variable

Relay relay contact t 3 Amax

Temperature - 30 degC to + 75 degC

Protective system IP 54

Control Unit for filling or emptying

Housing plastic with control lamp 110 x 75 x 65 Part No 421 651

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page 26

Probes operating on the capacitive principle

This probe is self-adjustable and can be used for liquids including high viscosity media and

powders

Short description

This BEDIA-Level Sensor is suitable for liquids including high viscosity media and powdersIt operates on the principle of electrical capacitance changes arising when an electrodesurrounded by air is immersed in a media This capacitance change causes an electric

circuit to oscillate thus switching the output transistor off The use of latest state-of-the-arthybrid technology allows the probe and the electronic circuitry to be enclosed in a singlesealed unit

ApplicationThe BEDIA-Level Sensor with itrsquos large temperature range and wide sensitivity adjusting

range is suitable for a wide spread of applications process control petrochemical industrytank level monitoring bottle and crate washing systems in breweries etc

Operating modes

Minimum switching Normally the sensing probe is immersed and the green LED indicates

As the level drops below the probe the green LED extinguishes

Maximum switching Normally the sensing probe is not immersed and the green LED

indicates As the level rises above the probe the green LED extinguishes

Diagram of working method

7182019 BEDIA Level Monitoring

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page 27

Technical data

Circuit voltage 9 - 36 V DC Short circuit and overload

protectedPower consumption normal operation typ17 mA

fault operation typ10 mATime-delay typ01 sec

OutputTransistor plus switching 300 mA (500 mA short-time) short-circuit and overload proof with integral suppression diode

Terminal

configuration

max 1 mm2 screw terminals (AWG 17) Operating

temperature range

- 20degC to + 130degC

- 20degC to + 85degCMaterial - probe envelope PA 12-Gf

(polyamide with glass fibre)- fitting V2A (DIN 14305AISI 303)

- housing cover PA6-3-T (trogamide -transparent)

- O-ring FKM (viton)

Cable length max 300 m

Mounting plane horizontal (by preference Cable gland PG 7Max switchingpoint hysteresis

sensor diameter Mass ca 250 g

Cable automotive cable FLR 3 x 075 black Temp range -50degC to + 150degCBEDIA-part-no for cut goods 422 210

Dimensional diagram

A B BEDIA part no

G 34A 16mm 422 900

frac34ldquo NPT 21mm 422 901

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page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

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page 14

Installation Instruction for BEDIA Level Monitoring Probes

BEDIA Level Monitoring Probes may be installed in any attitude

Please observe the following instructions when installing the probe

1 To prevent false indication install the probe in a smooth area where it is not affected bysplashing media as may be the case when it is installed in a gear unit or directly in the

motor oil sump

2 To prevent false indication install the sensor at least 15mm from the wall away

Only for water - sensors

3 False indication may also occur if the sensor is mounted from above in a plasticcontainer with the medium carrying no potential In all other mounting attitudes the

housing will be in contact with the medium so as to ensure potential is available

4 Connection Diagram

Minus switching probes Plus switching probes

5 Connection of the cables free wheeling diode

Bayonet 16SThread M27x1

Bayonet 10SL Bayonet DIN 72585Bayonet DIN 43650

Cable

+ A 1 Brown

- B 2 White

S C 3 Green

sensor

wall

gt15mm

7182019 BEDIA Level Monitoring

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page 15

Probe with bayonet 10 SL to VG 0095342Environmental protection 67 DIN 40050

Probe suitable for aqueous media Connection diagram

Signal outputminus potential

Signal outputplus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref No

M 18 x 15 MIN 1 sec 3 sec 421 903 421 950 421 470 421 471

M 18 x 15 MAX 1 sec 3 sec 421 951 421 952 421 472 421 473M 18 x 15 MIN 2 sec 7 sec ---- 421 984 ---- ----

M 18 x 15 MAX 0 sec 7 sec ---- 421 990 ---- ----

Probe with bayonet 10 SL to VG 0095342

Probe suitable for aqueous media

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Function-control

Integralcontrolfunction

Monitoringdelay

Aqueousliquids

Ref No

Oil and fueRef No

Aqueousliquids

Ref No

Oil and fueRef No

M 18 x 15 MIN 1 sec 3 sec 200 421 906 421 957 421 478 421 479M 18 x 15 MAX 1 sec 3 sec 200 421 958 421 959 421 480 421 481M 18 x 15 MIN 1 sec 3 sec 450 421 960 ---- ---- ----

Accessories for probes with connector Cannon for bajonet 10 SL

421 652 Straight connector for bayonet 10 SL

421 885 Straight connector for bayonet 10 SL421 646 Cable with connector 3 x 1 with license for cut goods

421 653 Cable with connector 421 652 2000 mm

421 657 Cable with connector 421 652 5000 mm421 648 Brazed adapter internal thread M 18 x 15

Technical data see following pages

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page 16

Technical data for minimum and maximum probes

Mechanical dataHousing stainless non-magneticThread M18x15 max tightening torque 30 NmSealing ring (not supplied with the system) 18x22 DIN 7603-CUFitting Cu-Zn alloy material No 20401

Connection see table to VG 0095342Isolation of sensor Tefzel ETFE

Marking function type number manufacturing date voltageMounting attitude optional immersion depth horizontal approx 3 mm plusmn 2 mm

immersion depth vertical approx 20 mm plusmn 6 mmMass approx 200 g Ambient temperature - 30degC to + 125degC

Storage temperature - 55degC to + 125degCMedium temperature - 30degC to + 125degCSinusoidal vibration (peak) 2 - 25 Hz 16mm amplitude

25 - 420 Hz 4 g amplitude

420 - 1330 Hz 5 g amplitude1330 - 2700 Hz 10 g amplitude2700 - 5000 Hz 25 g amplitude

Relative humidity up to 100

Environment Shock (peak)

50 g half-sine 11 ms

EMC IEC 801 (1-4) lt 500 mV rmsdepending on cables

EMC to VG 95373 only with external filterInterference suppression to VDE0871 limit B

Pressure on sensor max 25 bar3675 PSIMedia to be monitored water cooling water seawater oil fuel hydraulic oil

brake fluidDependability The performance is not impaired by small deposits on

the probe

Electric data Protection against reversepolarity

Voltage spikes

between UB and frame

70 V dropping to UN in270

Voltage rating 9 - 36 V Hysteresis of response max plusmn 5 mm aroundthe sensing point

Output open collector switchingminus potential

Response time - bdquolevelacceptableldquo

typically 1 s (05 s to15 s)

Closed-circuit current at24 V

lt 10 mA Response time - bdquolevelunacceptableldquo

Recovery time

typically 3 s (1 s to 4 s)

lt 2 s

Power consumption closed-circuit current plus

switching current

Integral control function see table

Switching capacity max 1 A continuous currentin the voltage range indicated

Terminal connection A = + UB B = - UB C = output signal

Load resistive and inductive Potential of housing

Dielectric strength

physically isolated fromplus UB and minus UB

VDE

0100500 VDC 1 minLoad inductance 500 mH Insulation resistance VDE 0160500 VAC50

Hz 1 minDielectric resistance gt 10 M Ohm

Voltage through lt 0 5 V

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or pluspotential to the minus terminal as otherwise the probes may be destroyed

- Plus switching probes Do not connect plus potential to the signal terminal or minuspotential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

7182019 BEDIA Level Monitoring

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page 17

Probes operating on the capacitive principle Ex approvedEnvironmental protection 65 DIN 40050

Probe suitable for aqueousmedia

Probe suitable for oil and fuel

Certificate of ConformityEN 50014-1977 + A1 - A5 (VDE 01700171 Part 1187) General requirementsEN 50020-1977 + A1 - A2 (VDE 01700171 Part 7187) intrinsic safety bdquoIldquo

EEx Ia I

Probe for mining applications

Signal outputMinus potential

ThreadMonitoring

displayIntegralcontrolfunction

Monitoringdelay

Voltage (voltDC)

Aqueous liquids

Ref No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec DC 9-13 V 421 934 421 936M 14 x 15 MAX 2 sec 7 sec DC 9-13 V 421 935 421 937M 18 x 15 MIN 2 sec 7 sec DC 9-13 V 421 930 421 932

M 18 x 15 MAX 2 sec 7 sec DC 9-13 V 421 931 421 93314ldquo NPTF MIN 2 sec 7 sec DC 9-13 V 421 938 421 940

14ldquo NPTF MAX 2 sec 7 sec DC 9-13 V 421 939 421 941

UB+ = Brown

Minus = WhiteSignal = Green

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page 18

Technical data for minimum and maximum probes

Operating voltage 9 - 13 V DC

Closed-circuit current consumption approx 6 mA

Sensing point 20 mm plusmn 6 mm from sensor tip

Power output at the signal output open collector Should be limited to max 20 mA

by the user

Storage temperature - 30degC to +125degCOperating temperature - 30degC to +125degC

Fault indicating delay approx 7 sec

Integral control function approx 2 sec

Shock 50 g half-sine 11 ms

Vibration to GL requirements for type certified tests

Admissible pressure on sensor 5 bar735 PSI

Environmental protection IP 65

Protection against reverse polarity in-built between plus and minus terminal

Mounting attitude horizontal preferred

Housing brass CuZn39Pb3

Sensor coating ETFE Tefzelreg

Weight with 10 m cable approx 800 g

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page 19

Certificate of Conformity BVS 94C1001

7182019 BEDIA Level Monitoring

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page 20

Certificate of Conformity BVS 94C1001

7182019 BEDIA Level Monitoring

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page 21

Conductivity probeEnvironmental protection 65 DIN 40050

Probe suitable for aqueous media

Conductivity probe with bayonet 16 S

Signal outputMinus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous liquids

Ref No

M 14 x 15 MIN 2 sec 7 sec 422 200

M 14 x 15 MAX 2 sec 7 sec 422 201

14ldquo NPTF MIN 2 sec 7 sec 422 20414ldquo NPTF MAX 2 sec 7 sec 422 205

Accessories for probes with bayonet 16 S

421 672 Straight connector for bayonet 16 S for corrugated tubing NW 10421 673 90deg connector for bayonet 16 S for corrugated tubing NW 10421 772 Straight connector for bayonet 16 S with 56 mm cable sealing421 773 90deg connector for bayonet 16 S with 56 mm cable sealing

421 670 Cable with connector 421 672 300 mm

421 018 Cable with connector 421 772 1015 mm421 586 Cable with connector 421 772 1300 mm

421 668 Cable with connector 421 772 3000 mm421 671 Cable with connector 421 673 300 mm

421 891 Cable with connector 421 773 800 mm

421 585 Cable with connector 421 773 1300 mm

421 669 Cable with connector 421 773 5000 mm

7182019 BEDIA Level Monitoring

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page 22

Technical Data for minimum and maximum probes

Voltage rating DC 16 - 32 V

Power consumption typically 7 mA

Switching capacity 3 W (resistive load)

Output minus switching

Voltage drop approx 35 V with 3 W lamp load

Load dump protection 70 V 270 ns

Protection from fault conditions to VDE 0939

Lamp test in-built (approx 3 s)

Fault indicating delay approx 7 s

Free-wheeling diode Inductive loads A free wheeling diode eg 1N4007 has to bemounted at the load

Protection against reverse polarity in-built between plus and minus terminalObserve correct connection of plus and signal terminals

Operating temperature - 40degC to + 120degC

Storage temperature - 40degC to + 120degC

Admissible pressure on sensor 2 bar

Max tightening torque on thread 30 Nm

Mounting attitude optional

Housing brass MS CuZnPb3nickel-plated potential-free

Sensor coating Tefzel

983214

ETFE

Sensor brass MS CuZn39Pb3(immersed in the medium)

Weight approx 100 g

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page 23

Level monitoring in the oil sump

Which are the benefits of a level monitoring system in the oil sump over conventional

pressure and temperature sensorsTemperature sensors indicate very slowly When motor oil is lost e g by tubing breakagethe component temperature can no longer be conducted to the sensors

The lower limit value of oil pressure switches or sensors is set low (low oil pressure with themotor running at no load) At rated motor speed and with too little oil in the oil circuit an oil-airmixture may be produced without that a signal is put out The components are no longer

sufficiently cooled and lubricatedIn the two events described above the output signal is available either too late or even not atall so that the motor will be damaged The level monitoring system however indicates even

before the oil level becomes too low i e as soon as the oil level has fallen 10 to 20 mmbelow the minimum marking on the dipstick Oil pressure and oil temperature indication isalways ensured

Functional diagram

Installation instructions

1 Drain the motor oil

2 Secure the adjustable elbow coupling with the tubing and the sensor support at themotor The sensor housing should be adjustable through oblong holes to determine theminimum point

3 Install the ventilation for the crankcase (e g inspection hole cover)

4 Install and connect the sensor

5 Check for correct electrical function The minimum sensor must indicate now

6 Refill the oil up to the minimum marking on the dipstick

7 Move the sensor and support slowly down until the signal is no longer availableTheswitch point of the sensor is now exactly at the minimum oil level of the motor

8 Move the sensor down by another 10 to 20 mm and fix it The signal bdquooil level too lowldquowill now be put out when the level is approx 10 to 20 mm below the minimum markingon the dipstick

Legend Ref Nr

1 Tubing complete with 350 mm pipecoupling

421 660

Tubing complete with 450 mm pipe

coupling

421 661

Tubing complete with 550 mm pipecoupling

421 659

2 Sensor support 454 134

3 PA pipe available in meters 421 662

4 Level monitoring sensor

Oil MIN 9 - 36 V 421 595Oil MAX 9 - 36 V 421 599

5 withoutcable

withcable

Straight connector 421 672 421 67090deg connector 421 673 421 671

7182019 BEDIA Level Monitoring

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page 24

Accessories

Plug Connection

1 Straight taper M 27 x 1 orstraight taper bayonet 16 S

2 Gripping seal-ring NW 103 Sleeve nut for NH9-1513

A A Tapered rubber ring must

point into the sleeve nutB B Tube polyflex NW 10Part-No 421 642 M 27 x 1

Part-No 421 672 Bayonet 16 S

Plug Connection

1 Taper M 27 x 1 90deg or

2 Tape 90deg bayonet 16 S3 Gripping seal-ring NW 10

A Tapered rubber ring mustpoint into the sleeve nut

B Tube polyflex NW 10

Part-No 421 643 M 27 x 1Part-No 421 673 Bayonet 16 S

Screw-in Adapter

Outside M 22 x 15Inside M 14 x 15

Part-No 421 640

Braze-in Adapter

Inside 14ldquo NPFTPart-No 421 641

Inside M 14 x 15Part-No 421 644

Cable and Plug

Connection for Probes Approved by Classifica-tion Societies

A Cablem Part-No 421 646

B Plug connectionPart-No 421 645

Plug connection fittedwith 2 m cablePart-No 421 647

Inside M 18 x 15

Part-No 421 648

7182019 BEDIA Level Monitoring

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page 25

Control and Power Supply Unit 110220 V AC 1224 V DC Order No 421 650

Up to three probes can

be fed from this powersupply unit A relay 3 Amax with one normally

open and one normallyclosed contact is fittedwhich can be used for

additional control tasks A power supply unit isavailable for connection

to 220 V

The voltage for the

relay contacts must notbe taken from thepower supply unit

Housing plastic with control lamps MIN + MAX 110 x 75 x 65 _________________________________________________________________________Control Unit Best-Nr 421 651

for automatic filling and emptying of liquids This unit is designed to control two bdquominimumldquoprobes Probe 2 monitors the maximum liquid level probe 1 the minimum level An outputrelay with a change-over contact is switched automatically for external control tasks

Relays 1 and 2 are switched to conduct when the liquids falls below minimum level Whenthe liquid level reaches maximum relay circuits 1 and 2 are automatically interrupted

LED-display

bull no display liquid level above

bull maximum LED bdquomaximumldquo lights liquid Level is between maximum and minimum andis falling

bull Both LEDrsquos light liquid level is below minimum or is between minimum and maximumand is rising Contacts r1 and r2 are closed

Two bdquominimumldquo minus switching probes with built-in control function are used for this

control The self-control is only visible when both probes are immersed in liquid The signalappears for about 2 seconds when the power supply is switched onFor this period the output (contact r1 and r2) is conducting The voltage for the relay contacts

must not be taken from the power supply unit

Technical Data for Control Unit

Operating 110220 V AC or 1224 V DC Mounting position variable

Relay relay contact t 3 Amax

Temperature - 30 degC to + 75 degC

Protective system IP 54

Control Unit for filling or emptying

Housing plastic with control lamp 110 x 75 x 65 Part No 421 651

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page 26

Probes operating on the capacitive principle

This probe is self-adjustable and can be used for liquids including high viscosity media and

powders

Short description

This BEDIA-Level Sensor is suitable for liquids including high viscosity media and powdersIt operates on the principle of electrical capacitance changes arising when an electrodesurrounded by air is immersed in a media This capacitance change causes an electric

circuit to oscillate thus switching the output transistor off The use of latest state-of-the-arthybrid technology allows the probe and the electronic circuitry to be enclosed in a singlesealed unit

ApplicationThe BEDIA-Level Sensor with itrsquos large temperature range and wide sensitivity adjusting

range is suitable for a wide spread of applications process control petrochemical industrytank level monitoring bottle and crate washing systems in breweries etc

Operating modes

Minimum switching Normally the sensing probe is immersed and the green LED indicates

As the level drops below the probe the green LED extinguishes

Maximum switching Normally the sensing probe is not immersed and the green LED

indicates As the level rises above the probe the green LED extinguishes

Diagram of working method

7182019 BEDIA Level Monitoring

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page 27

Technical data

Circuit voltage 9 - 36 V DC Short circuit and overload

protectedPower consumption normal operation typ17 mA

fault operation typ10 mATime-delay typ01 sec

OutputTransistor plus switching 300 mA (500 mA short-time) short-circuit and overload proof with integral suppression diode

Terminal

configuration

max 1 mm2 screw terminals (AWG 17) Operating

temperature range

- 20degC to + 130degC

- 20degC to + 85degCMaterial - probe envelope PA 12-Gf

(polyamide with glass fibre)- fitting V2A (DIN 14305AISI 303)

- housing cover PA6-3-T (trogamide -transparent)

- O-ring FKM (viton)

Cable length max 300 m

Mounting plane horizontal (by preference Cable gland PG 7Max switchingpoint hysteresis

sensor diameter Mass ca 250 g

Cable automotive cable FLR 3 x 075 black Temp range -50degC to + 150degCBEDIA-part-no for cut goods 422 210

Dimensional diagram

A B BEDIA part no

G 34A 16mm 422 900

frac34ldquo NPT 21mm 422 901

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page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

7182019 BEDIA Level Monitoring

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page 15

Probe with bayonet 10 SL to VG 0095342Environmental protection 67 DIN 40050

Probe suitable for aqueous media Connection diagram

Signal outputminus potential

Signal outputplus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous

liquidsRef No

Oil and fuel

Ref No

Aqueous

liquidsRef No

Oil and fuel

Ref No

M 18 x 15 MIN 1 sec 3 sec 421 903 421 950 421 470 421 471

M 18 x 15 MAX 1 sec 3 sec 421 951 421 952 421 472 421 473M 18 x 15 MIN 2 sec 7 sec ---- 421 984 ---- ----

M 18 x 15 MAX 0 sec 7 sec ---- 421 990 ---- ----

Probe with bayonet 10 SL to VG 0095342

Probe suitable for aqueous media

Signal outputminus potential

Signal outputplus potential

Thread Monitoringdisplay

Function-control

Integralcontrolfunction

Monitoringdelay

Aqueousliquids

Ref No

Oil and fueRef No

Aqueousliquids

Ref No

Oil and fueRef No

M 18 x 15 MIN 1 sec 3 sec 200 421 906 421 957 421 478 421 479M 18 x 15 MAX 1 sec 3 sec 200 421 958 421 959 421 480 421 481M 18 x 15 MIN 1 sec 3 sec 450 421 960 ---- ---- ----

Accessories for probes with connector Cannon for bajonet 10 SL

421 652 Straight connector for bayonet 10 SL

421 885 Straight connector for bayonet 10 SL421 646 Cable with connector 3 x 1 with license for cut goods

421 653 Cable with connector 421 652 2000 mm

421 657 Cable with connector 421 652 5000 mm421 648 Brazed adapter internal thread M 18 x 15

Technical data see following pages

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page 16

Technical data for minimum and maximum probes

Mechanical dataHousing stainless non-magneticThread M18x15 max tightening torque 30 NmSealing ring (not supplied with the system) 18x22 DIN 7603-CUFitting Cu-Zn alloy material No 20401

Connection see table to VG 0095342Isolation of sensor Tefzel ETFE

Marking function type number manufacturing date voltageMounting attitude optional immersion depth horizontal approx 3 mm plusmn 2 mm

immersion depth vertical approx 20 mm plusmn 6 mmMass approx 200 g Ambient temperature - 30degC to + 125degC

Storage temperature - 55degC to + 125degCMedium temperature - 30degC to + 125degCSinusoidal vibration (peak) 2 - 25 Hz 16mm amplitude

25 - 420 Hz 4 g amplitude

420 - 1330 Hz 5 g amplitude1330 - 2700 Hz 10 g amplitude2700 - 5000 Hz 25 g amplitude

Relative humidity up to 100

Environment Shock (peak)

50 g half-sine 11 ms

EMC IEC 801 (1-4) lt 500 mV rmsdepending on cables

EMC to VG 95373 only with external filterInterference suppression to VDE0871 limit B

Pressure on sensor max 25 bar3675 PSIMedia to be monitored water cooling water seawater oil fuel hydraulic oil

brake fluidDependability The performance is not impaired by small deposits on

the probe

Electric data Protection against reversepolarity

Voltage spikes

between UB and frame

70 V dropping to UN in270

Voltage rating 9 - 36 V Hysteresis of response max plusmn 5 mm aroundthe sensing point

Output open collector switchingminus potential

Response time - bdquolevelacceptableldquo

typically 1 s (05 s to15 s)

Closed-circuit current at24 V

lt 10 mA Response time - bdquolevelunacceptableldquo

Recovery time

typically 3 s (1 s to 4 s)

lt 2 s

Power consumption closed-circuit current plus

switching current

Integral control function see table

Switching capacity max 1 A continuous currentin the voltage range indicated

Terminal connection A = + UB B = - UB C = output signal

Load resistive and inductive Potential of housing

Dielectric strength

physically isolated fromplus UB and minus UB

VDE

0100500 VDC 1 minLoad inductance 500 mH Insulation resistance VDE 0160500 VAC50

Hz 1 minDielectric resistance gt 10 M Ohm

Voltage through lt 0 5 V

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or pluspotential to the minus terminal as otherwise the probes may be destroyed

- Plus switching probes Do not connect plus potential to the signal terminal or minuspotential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

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page 17

Probes operating on the capacitive principle Ex approvedEnvironmental protection 65 DIN 40050

Probe suitable for aqueousmedia

Probe suitable for oil and fuel

Certificate of ConformityEN 50014-1977 + A1 - A5 (VDE 01700171 Part 1187) General requirementsEN 50020-1977 + A1 - A2 (VDE 01700171 Part 7187) intrinsic safety bdquoIldquo

EEx Ia I

Probe for mining applications

Signal outputMinus potential

ThreadMonitoring

displayIntegralcontrolfunction

Monitoringdelay

Voltage (voltDC)

Aqueous liquids

Ref No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec DC 9-13 V 421 934 421 936M 14 x 15 MAX 2 sec 7 sec DC 9-13 V 421 935 421 937M 18 x 15 MIN 2 sec 7 sec DC 9-13 V 421 930 421 932

M 18 x 15 MAX 2 sec 7 sec DC 9-13 V 421 931 421 93314ldquo NPTF MIN 2 sec 7 sec DC 9-13 V 421 938 421 940

14ldquo NPTF MAX 2 sec 7 sec DC 9-13 V 421 939 421 941

UB+ = Brown

Minus = WhiteSignal = Green

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page 18

Technical data for minimum and maximum probes

Operating voltage 9 - 13 V DC

Closed-circuit current consumption approx 6 mA

Sensing point 20 mm plusmn 6 mm from sensor tip

Power output at the signal output open collector Should be limited to max 20 mA

by the user

Storage temperature - 30degC to +125degCOperating temperature - 30degC to +125degC

Fault indicating delay approx 7 sec

Integral control function approx 2 sec

Shock 50 g half-sine 11 ms

Vibration to GL requirements for type certified tests

Admissible pressure on sensor 5 bar735 PSI

Environmental protection IP 65

Protection against reverse polarity in-built between plus and minus terminal

Mounting attitude horizontal preferred

Housing brass CuZn39Pb3

Sensor coating ETFE Tefzelreg

Weight with 10 m cable approx 800 g

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page 19

Certificate of Conformity BVS 94C1001

7182019 BEDIA Level Monitoring

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page 20

Certificate of Conformity BVS 94C1001

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page 21

Conductivity probeEnvironmental protection 65 DIN 40050

Probe suitable for aqueous media

Conductivity probe with bayonet 16 S

Signal outputMinus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous liquids

Ref No

M 14 x 15 MIN 2 sec 7 sec 422 200

M 14 x 15 MAX 2 sec 7 sec 422 201

14ldquo NPTF MIN 2 sec 7 sec 422 20414ldquo NPTF MAX 2 sec 7 sec 422 205

Accessories for probes with bayonet 16 S

421 672 Straight connector for bayonet 16 S for corrugated tubing NW 10421 673 90deg connector for bayonet 16 S for corrugated tubing NW 10421 772 Straight connector for bayonet 16 S with 56 mm cable sealing421 773 90deg connector for bayonet 16 S with 56 mm cable sealing

421 670 Cable with connector 421 672 300 mm

421 018 Cable with connector 421 772 1015 mm421 586 Cable with connector 421 772 1300 mm

421 668 Cable with connector 421 772 3000 mm421 671 Cable with connector 421 673 300 mm

421 891 Cable with connector 421 773 800 mm

421 585 Cable with connector 421 773 1300 mm

421 669 Cable with connector 421 773 5000 mm

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page 22

Technical Data for minimum and maximum probes

Voltage rating DC 16 - 32 V

Power consumption typically 7 mA

Switching capacity 3 W (resistive load)

Output minus switching

Voltage drop approx 35 V with 3 W lamp load

Load dump protection 70 V 270 ns

Protection from fault conditions to VDE 0939

Lamp test in-built (approx 3 s)

Fault indicating delay approx 7 s

Free-wheeling diode Inductive loads A free wheeling diode eg 1N4007 has to bemounted at the load

Protection against reverse polarity in-built between plus and minus terminalObserve correct connection of plus and signal terminals

Operating temperature - 40degC to + 120degC

Storage temperature - 40degC to + 120degC

Admissible pressure on sensor 2 bar

Max tightening torque on thread 30 Nm

Mounting attitude optional

Housing brass MS CuZnPb3nickel-plated potential-free

Sensor coating Tefzel

983214

ETFE

Sensor brass MS CuZn39Pb3(immersed in the medium)

Weight approx 100 g

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page 23

Level monitoring in the oil sump

Which are the benefits of a level monitoring system in the oil sump over conventional

pressure and temperature sensorsTemperature sensors indicate very slowly When motor oil is lost e g by tubing breakagethe component temperature can no longer be conducted to the sensors

The lower limit value of oil pressure switches or sensors is set low (low oil pressure with themotor running at no load) At rated motor speed and with too little oil in the oil circuit an oil-airmixture may be produced without that a signal is put out The components are no longer

sufficiently cooled and lubricatedIn the two events described above the output signal is available either too late or even not atall so that the motor will be damaged The level monitoring system however indicates even

before the oil level becomes too low i e as soon as the oil level has fallen 10 to 20 mmbelow the minimum marking on the dipstick Oil pressure and oil temperature indication isalways ensured

Functional diagram

Installation instructions

1 Drain the motor oil

2 Secure the adjustable elbow coupling with the tubing and the sensor support at themotor The sensor housing should be adjustable through oblong holes to determine theminimum point

3 Install the ventilation for the crankcase (e g inspection hole cover)

4 Install and connect the sensor

5 Check for correct electrical function The minimum sensor must indicate now

6 Refill the oil up to the minimum marking on the dipstick

7 Move the sensor and support slowly down until the signal is no longer availableTheswitch point of the sensor is now exactly at the minimum oil level of the motor

8 Move the sensor down by another 10 to 20 mm and fix it The signal bdquooil level too lowldquowill now be put out when the level is approx 10 to 20 mm below the minimum markingon the dipstick

Legend Ref Nr

1 Tubing complete with 350 mm pipecoupling

421 660

Tubing complete with 450 mm pipe

coupling

421 661

Tubing complete with 550 mm pipecoupling

421 659

2 Sensor support 454 134

3 PA pipe available in meters 421 662

4 Level monitoring sensor

Oil MIN 9 - 36 V 421 595Oil MAX 9 - 36 V 421 599

5 withoutcable

withcable

Straight connector 421 672 421 67090deg connector 421 673 421 671

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page 24

Accessories

Plug Connection

1 Straight taper M 27 x 1 orstraight taper bayonet 16 S

2 Gripping seal-ring NW 103 Sleeve nut for NH9-1513

A A Tapered rubber ring must

point into the sleeve nutB B Tube polyflex NW 10Part-No 421 642 M 27 x 1

Part-No 421 672 Bayonet 16 S

Plug Connection

1 Taper M 27 x 1 90deg or

2 Tape 90deg bayonet 16 S3 Gripping seal-ring NW 10

A Tapered rubber ring mustpoint into the sleeve nut

B Tube polyflex NW 10

Part-No 421 643 M 27 x 1Part-No 421 673 Bayonet 16 S

Screw-in Adapter

Outside M 22 x 15Inside M 14 x 15

Part-No 421 640

Braze-in Adapter

Inside 14ldquo NPFTPart-No 421 641

Inside M 14 x 15Part-No 421 644

Cable and Plug

Connection for Probes Approved by Classifica-tion Societies

A Cablem Part-No 421 646

B Plug connectionPart-No 421 645

Plug connection fittedwith 2 m cablePart-No 421 647

Inside M 18 x 15

Part-No 421 648

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page 25

Control and Power Supply Unit 110220 V AC 1224 V DC Order No 421 650

Up to three probes can

be fed from this powersupply unit A relay 3 Amax with one normally

open and one normallyclosed contact is fittedwhich can be used for

additional control tasks A power supply unit isavailable for connection

to 220 V

The voltage for the

relay contacts must notbe taken from thepower supply unit

Housing plastic with control lamps MIN + MAX 110 x 75 x 65 _________________________________________________________________________Control Unit Best-Nr 421 651

for automatic filling and emptying of liquids This unit is designed to control two bdquominimumldquoprobes Probe 2 monitors the maximum liquid level probe 1 the minimum level An outputrelay with a change-over contact is switched automatically for external control tasks

Relays 1 and 2 are switched to conduct when the liquids falls below minimum level Whenthe liquid level reaches maximum relay circuits 1 and 2 are automatically interrupted

LED-display

bull no display liquid level above

bull maximum LED bdquomaximumldquo lights liquid Level is between maximum and minimum andis falling

bull Both LEDrsquos light liquid level is below minimum or is between minimum and maximumand is rising Contacts r1 and r2 are closed

Two bdquominimumldquo minus switching probes with built-in control function are used for this

control The self-control is only visible when both probes are immersed in liquid The signalappears for about 2 seconds when the power supply is switched onFor this period the output (contact r1 and r2) is conducting The voltage for the relay contacts

must not be taken from the power supply unit

Technical Data for Control Unit

Operating 110220 V AC or 1224 V DC Mounting position variable

Relay relay contact t 3 Amax

Temperature - 30 degC to + 75 degC

Protective system IP 54

Control Unit for filling or emptying

Housing plastic with control lamp 110 x 75 x 65 Part No 421 651

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page 26

Probes operating on the capacitive principle

This probe is self-adjustable and can be used for liquids including high viscosity media and

powders

Short description

This BEDIA-Level Sensor is suitable for liquids including high viscosity media and powdersIt operates on the principle of electrical capacitance changes arising when an electrodesurrounded by air is immersed in a media This capacitance change causes an electric

circuit to oscillate thus switching the output transistor off The use of latest state-of-the-arthybrid technology allows the probe and the electronic circuitry to be enclosed in a singlesealed unit

ApplicationThe BEDIA-Level Sensor with itrsquos large temperature range and wide sensitivity adjusting

range is suitable for a wide spread of applications process control petrochemical industrytank level monitoring bottle and crate washing systems in breweries etc

Operating modes

Minimum switching Normally the sensing probe is immersed and the green LED indicates

As the level drops below the probe the green LED extinguishes

Maximum switching Normally the sensing probe is not immersed and the green LED

indicates As the level rises above the probe the green LED extinguishes

Diagram of working method

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page 27

Technical data

Circuit voltage 9 - 36 V DC Short circuit and overload

protectedPower consumption normal operation typ17 mA

fault operation typ10 mATime-delay typ01 sec

OutputTransistor plus switching 300 mA (500 mA short-time) short-circuit and overload proof with integral suppression diode

Terminal

configuration

max 1 mm2 screw terminals (AWG 17) Operating

temperature range

- 20degC to + 130degC

- 20degC to + 85degCMaterial - probe envelope PA 12-Gf

(polyamide with glass fibre)- fitting V2A (DIN 14305AISI 303)

- housing cover PA6-3-T (trogamide -transparent)

- O-ring FKM (viton)

Cable length max 300 m

Mounting plane horizontal (by preference Cable gland PG 7Max switchingpoint hysteresis

sensor diameter Mass ca 250 g

Cable automotive cable FLR 3 x 075 black Temp range -50degC to + 150degCBEDIA-part-no for cut goods 422 210

Dimensional diagram

A B BEDIA part no

G 34A 16mm 422 900

frac34ldquo NPT 21mm 422 901

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page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

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page 16

Technical data for minimum and maximum probes

Mechanical dataHousing stainless non-magneticThread M18x15 max tightening torque 30 NmSealing ring (not supplied with the system) 18x22 DIN 7603-CUFitting Cu-Zn alloy material No 20401

Connection see table to VG 0095342Isolation of sensor Tefzel ETFE

Marking function type number manufacturing date voltageMounting attitude optional immersion depth horizontal approx 3 mm plusmn 2 mm

immersion depth vertical approx 20 mm plusmn 6 mmMass approx 200 g Ambient temperature - 30degC to + 125degC

Storage temperature - 55degC to + 125degCMedium temperature - 30degC to + 125degCSinusoidal vibration (peak) 2 - 25 Hz 16mm amplitude

25 - 420 Hz 4 g amplitude

420 - 1330 Hz 5 g amplitude1330 - 2700 Hz 10 g amplitude2700 - 5000 Hz 25 g amplitude

Relative humidity up to 100

Environment Shock (peak)

50 g half-sine 11 ms

EMC IEC 801 (1-4) lt 500 mV rmsdepending on cables

EMC to VG 95373 only with external filterInterference suppression to VDE0871 limit B

Pressure on sensor max 25 bar3675 PSIMedia to be monitored water cooling water seawater oil fuel hydraulic oil

brake fluidDependability The performance is not impaired by small deposits on

the probe

Electric data Protection against reversepolarity

Voltage spikes

between UB and frame

70 V dropping to UN in270

Voltage rating 9 - 36 V Hysteresis of response max plusmn 5 mm aroundthe sensing point

Output open collector switchingminus potential

Response time - bdquolevelacceptableldquo

typically 1 s (05 s to15 s)

Closed-circuit current at24 V

lt 10 mA Response time - bdquolevelunacceptableldquo

Recovery time

typically 3 s (1 s to 4 s)

lt 2 s

Power consumption closed-circuit current plus

switching current

Integral control function see table

Switching capacity max 1 A continuous currentin the voltage range indicated

Terminal connection A = + UB B = - UB C = output signal

Load resistive and inductive Potential of housing

Dielectric strength

physically isolated fromplus UB and minus UB

VDE

0100500 VDC 1 minLoad inductance 500 mH Insulation resistance VDE 0160500 VAC50

Hz 1 minDielectric resistance gt 10 M Ohm

Voltage through lt 0 5 V

CAUTION

- Minus switching probes Do not connect minus potential to the signal terminal or pluspotential to the minus terminal as otherwise the probes may be destroyed

- Plus switching probes Do not connect plus potential to the signal terminal or minuspotential to the plus terminal as otherwise the probes may be destroyed

- Inductive loads A free wheeling diode eg 1N4007 has to be mounted at the load

7182019 BEDIA Level Monitoring

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page 17

Probes operating on the capacitive principle Ex approvedEnvironmental protection 65 DIN 40050

Probe suitable for aqueousmedia

Probe suitable for oil and fuel

Certificate of ConformityEN 50014-1977 + A1 - A5 (VDE 01700171 Part 1187) General requirementsEN 50020-1977 + A1 - A2 (VDE 01700171 Part 7187) intrinsic safety bdquoIldquo

EEx Ia I

Probe for mining applications

Signal outputMinus potential

ThreadMonitoring

displayIntegralcontrolfunction

Monitoringdelay

Voltage (voltDC)

Aqueous liquids

Ref No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec DC 9-13 V 421 934 421 936M 14 x 15 MAX 2 sec 7 sec DC 9-13 V 421 935 421 937M 18 x 15 MIN 2 sec 7 sec DC 9-13 V 421 930 421 932

M 18 x 15 MAX 2 sec 7 sec DC 9-13 V 421 931 421 93314ldquo NPTF MIN 2 sec 7 sec DC 9-13 V 421 938 421 940

14ldquo NPTF MAX 2 sec 7 sec DC 9-13 V 421 939 421 941

UB+ = Brown

Minus = WhiteSignal = Green

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page 18

Technical data for minimum and maximum probes

Operating voltage 9 - 13 V DC

Closed-circuit current consumption approx 6 mA

Sensing point 20 mm plusmn 6 mm from sensor tip

Power output at the signal output open collector Should be limited to max 20 mA

by the user

Storage temperature - 30degC to +125degCOperating temperature - 30degC to +125degC

Fault indicating delay approx 7 sec

Integral control function approx 2 sec

Shock 50 g half-sine 11 ms

Vibration to GL requirements for type certified tests

Admissible pressure on sensor 5 bar735 PSI

Environmental protection IP 65

Protection against reverse polarity in-built between plus and minus terminal

Mounting attitude horizontal preferred

Housing brass CuZn39Pb3

Sensor coating ETFE Tefzelreg

Weight with 10 m cable approx 800 g

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page 19

Certificate of Conformity BVS 94C1001

7182019 BEDIA Level Monitoring

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page 20

Certificate of Conformity BVS 94C1001

7182019 BEDIA Level Monitoring

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page 21

Conductivity probeEnvironmental protection 65 DIN 40050

Probe suitable for aqueous media

Conductivity probe with bayonet 16 S

Signal outputMinus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous liquids

Ref No

M 14 x 15 MIN 2 sec 7 sec 422 200

M 14 x 15 MAX 2 sec 7 sec 422 201

14ldquo NPTF MIN 2 sec 7 sec 422 20414ldquo NPTF MAX 2 sec 7 sec 422 205

Accessories for probes with bayonet 16 S

421 672 Straight connector for bayonet 16 S for corrugated tubing NW 10421 673 90deg connector for bayonet 16 S for corrugated tubing NW 10421 772 Straight connector for bayonet 16 S with 56 mm cable sealing421 773 90deg connector for bayonet 16 S with 56 mm cable sealing

421 670 Cable with connector 421 672 300 mm

421 018 Cable with connector 421 772 1015 mm421 586 Cable with connector 421 772 1300 mm

421 668 Cable with connector 421 772 3000 mm421 671 Cable with connector 421 673 300 mm

421 891 Cable with connector 421 773 800 mm

421 585 Cable with connector 421 773 1300 mm

421 669 Cable with connector 421 773 5000 mm

7182019 BEDIA Level Monitoring

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page 22

Technical Data for minimum and maximum probes

Voltage rating DC 16 - 32 V

Power consumption typically 7 mA

Switching capacity 3 W (resistive load)

Output minus switching

Voltage drop approx 35 V with 3 W lamp load

Load dump protection 70 V 270 ns

Protection from fault conditions to VDE 0939

Lamp test in-built (approx 3 s)

Fault indicating delay approx 7 s

Free-wheeling diode Inductive loads A free wheeling diode eg 1N4007 has to bemounted at the load

Protection against reverse polarity in-built between plus and minus terminalObserve correct connection of plus and signal terminals

Operating temperature - 40degC to + 120degC

Storage temperature - 40degC to + 120degC

Admissible pressure on sensor 2 bar

Max tightening torque on thread 30 Nm

Mounting attitude optional

Housing brass MS CuZnPb3nickel-plated potential-free

Sensor coating Tefzel

983214

ETFE

Sensor brass MS CuZn39Pb3(immersed in the medium)

Weight approx 100 g

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2329

page 23

Level monitoring in the oil sump

Which are the benefits of a level monitoring system in the oil sump over conventional

pressure and temperature sensorsTemperature sensors indicate very slowly When motor oil is lost e g by tubing breakagethe component temperature can no longer be conducted to the sensors

The lower limit value of oil pressure switches or sensors is set low (low oil pressure with themotor running at no load) At rated motor speed and with too little oil in the oil circuit an oil-airmixture may be produced without that a signal is put out The components are no longer

sufficiently cooled and lubricatedIn the two events described above the output signal is available either too late or even not atall so that the motor will be damaged The level monitoring system however indicates even

before the oil level becomes too low i e as soon as the oil level has fallen 10 to 20 mmbelow the minimum marking on the dipstick Oil pressure and oil temperature indication isalways ensured

Functional diagram

Installation instructions

1 Drain the motor oil

2 Secure the adjustable elbow coupling with the tubing and the sensor support at themotor The sensor housing should be adjustable through oblong holes to determine theminimum point

3 Install the ventilation for the crankcase (e g inspection hole cover)

4 Install and connect the sensor

5 Check for correct electrical function The minimum sensor must indicate now

6 Refill the oil up to the minimum marking on the dipstick

7 Move the sensor and support slowly down until the signal is no longer availableTheswitch point of the sensor is now exactly at the minimum oil level of the motor

8 Move the sensor down by another 10 to 20 mm and fix it The signal bdquooil level too lowldquowill now be put out when the level is approx 10 to 20 mm below the minimum markingon the dipstick

Legend Ref Nr

1 Tubing complete with 350 mm pipecoupling

421 660

Tubing complete with 450 mm pipe

coupling

421 661

Tubing complete with 550 mm pipecoupling

421 659

2 Sensor support 454 134

3 PA pipe available in meters 421 662

4 Level monitoring sensor

Oil MIN 9 - 36 V 421 595Oil MAX 9 - 36 V 421 599

5 withoutcable

withcable

Straight connector 421 672 421 67090deg connector 421 673 421 671

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2429

page 24

Accessories

Plug Connection

1 Straight taper M 27 x 1 orstraight taper bayonet 16 S

2 Gripping seal-ring NW 103 Sleeve nut for NH9-1513

A A Tapered rubber ring must

point into the sleeve nutB B Tube polyflex NW 10Part-No 421 642 M 27 x 1

Part-No 421 672 Bayonet 16 S

Plug Connection

1 Taper M 27 x 1 90deg or

2 Tape 90deg bayonet 16 S3 Gripping seal-ring NW 10

A Tapered rubber ring mustpoint into the sleeve nut

B Tube polyflex NW 10

Part-No 421 643 M 27 x 1Part-No 421 673 Bayonet 16 S

Screw-in Adapter

Outside M 22 x 15Inside M 14 x 15

Part-No 421 640

Braze-in Adapter

Inside 14ldquo NPFTPart-No 421 641

Inside M 14 x 15Part-No 421 644

Cable and Plug

Connection for Probes Approved by Classifica-tion Societies

A Cablem Part-No 421 646

B Plug connectionPart-No 421 645

Plug connection fittedwith 2 m cablePart-No 421 647

Inside M 18 x 15

Part-No 421 648

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2529

page 25

Control and Power Supply Unit 110220 V AC 1224 V DC Order No 421 650

Up to three probes can

be fed from this powersupply unit A relay 3 Amax with one normally

open and one normallyclosed contact is fittedwhich can be used for

additional control tasks A power supply unit isavailable for connection

to 220 V

The voltage for the

relay contacts must notbe taken from thepower supply unit

Housing plastic with control lamps MIN + MAX 110 x 75 x 65 _________________________________________________________________________Control Unit Best-Nr 421 651

for automatic filling and emptying of liquids This unit is designed to control two bdquominimumldquoprobes Probe 2 monitors the maximum liquid level probe 1 the minimum level An outputrelay with a change-over contact is switched automatically for external control tasks

Relays 1 and 2 are switched to conduct when the liquids falls below minimum level Whenthe liquid level reaches maximum relay circuits 1 and 2 are automatically interrupted

LED-display

bull no display liquid level above

bull maximum LED bdquomaximumldquo lights liquid Level is between maximum and minimum andis falling

bull Both LEDrsquos light liquid level is below minimum or is between minimum and maximumand is rising Contacts r1 and r2 are closed

Two bdquominimumldquo minus switching probes with built-in control function are used for this

control The self-control is only visible when both probes are immersed in liquid The signalappears for about 2 seconds when the power supply is switched onFor this period the output (contact r1 and r2) is conducting The voltage for the relay contacts

must not be taken from the power supply unit

Technical Data for Control Unit

Operating 110220 V AC or 1224 V DC Mounting position variable

Relay relay contact t 3 Amax

Temperature - 30 degC to + 75 degC

Protective system IP 54

Control Unit for filling or emptying

Housing plastic with control lamp 110 x 75 x 65 Part No 421 651

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2629

page 26

Probes operating on the capacitive principle

This probe is self-adjustable and can be used for liquids including high viscosity media and

powders

Short description

This BEDIA-Level Sensor is suitable for liquids including high viscosity media and powdersIt operates on the principle of electrical capacitance changes arising when an electrodesurrounded by air is immersed in a media This capacitance change causes an electric

circuit to oscillate thus switching the output transistor off The use of latest state-of-the-arthybrid technology allows the probe and the electronic circuitry to be enclosed in a singlesealed unit

ApplicationThe BEDIA-Level Sensor with itrsquos large temperature range and wide sensitivity adjusting

range is suitable for a wide spread of applications process control petrochemical industrytank level monitoring bottle and crate washing systems in breweries etc

Operating modes

Minimum switching Normally the sensing probe is immersed and the green LED indicates

As the level drops below the probe the green LED extinguishes

Maximum switching Normally the sensing probe is not immersed and the green LED

indicates As the level rises above the probe the green LED extinguishes

Diagram of working method

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2729

page 27

Technical data

Circuit voltage 9 - 36 V DC Short circuit and overload

protectedPower consumption normal operation typ17 mA

fault operation typ10 mATime-delay typ01 sec

OutputTransistor plus switching 300 mA (500 mA short-time) short-circuit and overload proof with integral suppression diode

Terminal

configuration

max 1 mm2 screw terminals (AWG 17) Operating

temperature range

- 20degC to + 130degC

- 20degC to + 85degCMaterial - probe envelope PA 12-Gf

(polyamide with glass fibre)- fitting V2A (DIN 14305AISI 303)

- housing cover PA6-3-T (trogamide -transparent)

- O-ring FKM (viton)

Cable length max 300 m

Mounting plane horizontal (by preference Cable gland PG 7Max switchingpoint hysteresis

sensor diameter Mass ca 250 g

Cable automotive cable FLR 3 x 075 black Temp range -50degC to + 150degCBEDIA-part-no for cut goods 422 210

Dimensional diagram

A B BEDIA part no

G 34A 16mm 422 900

frac34ldquo NPT 21mm 422 901

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2829

page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2929

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 1729

page 17

Probes operating on the capacitive principle Ex approvedEnvironmental protection 65 DIN 40050

Probe suitable for aqueousmedia

Probe suitable for oil and fuel

Certificate of ConformityEN 50014-1977 + A1 - A5 (VDE 01700171 Part 1187) General requirementsEN 50020-1977 + A1 - A2 (VDE 01700171 Part 7187) intrinsic safety bdquoIldquo

EEx Ia I

Probe for mining applications

Signal outputMinus potential

ThreadMonitoring

displayIntegralcontrolfunction

Monitoringdelay

Voltage (voltDC)

Aqueous liquids

Ref No

Oil and fuel

Ref No

M 14 x 15 MIN 2 sec 7 sec DC 9-13 V 421 934 421 936M 14 x 15 MAX 2 sec 7 sec DC 9-13 V 421 935 421 937M 18 x 15 MIN 2 sec 7 sec DC 9-13 V 421 930 421 932

M 18 x 15 MAX 2 sec 7 sec DC 9-13 V 421 931 421 93314ldquo NPTF MIN 2 sec 7 sec DC 9-13 V 421 938 421 940

14ldquo NPTF MAX 2 sec 7 sec DC 9-13 V 421 939 421 941

UB+ = Brown

Minus = WhiteSignal = Green

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 1829

page 18

Technical data for minimum and maximum probes

Operating voltage 9 - 13 V DC

Closed-circuit current consumption approx 6 mA

Sensing point 20 mm plusmn 6 mm from sensor tip

Power output at the signal output open collector Should be limited to max 20 mA

by the user

Storage temperature - 30degC to +125degCOperating temperature - 30degC to +125degC

Fault indicating delay approx 7 sec

Integral control function approx 2 sec

Shock 50 g half-sine 11 ms

Vibration to GL requirements for type certified tests

Admissible pressure on sensor 5 bar735 PSI

Environmental protection IP 65

Protection against reverse polarity in-built between plus and minus terminal

Mounting attitude horizontal preferred

Housing brass CuZn39Pb3

Sensor coating ETFE Tefzelreg

Weight with 10 m cable approx 800 g

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 1929

page 19

Certificate of Conformity BVS 94C1001

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2029

page 20

Certificate of Conformity BVS 94C1001

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2129

page 21

Conductivity probeEnvironmental protection 65 DIN 40050

Probe suitable for aqueous media

Conductivity probe with bayonet 16 S

Signal outputMinus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous liquids

Ref No

M 14 x 15 MIN 2 sec 7 sec 422 200

M 14 x 15 MAX 2 sec 7 sec 422 201

14ldquo NPTF MIN 2 sec 7 sec 422 20414ldquo NPTF MAX 2 sec 7 sec 422 205

Accessories for probes with bayonet 16 S

421 672 Straight connector for bayonet 16 S for corrugated tubing NW 10421 673 90deg connector for bayonet 16 S for corrugated tubing NW 10421 772 Straight connector for bayonet 16 S with 56 mm cable sealing421 773 90deg connector for bayonet 16 S with 56 mm cable sealing

421 670 Cable with connector 421 672 300 mm

421 018 Cable with connector 421 772 1015 mm421 586 Cable with connector 421 772 1300 mm

421 668 Cable with connector 421 772 3000 mm421 671 Cable with connector 421 673 300 mm

421 891 Cable with connector 421 773 800 mm

421 585 Cable with connector 421 773 1300 mm

421 669 Cable with connector 421 773 5000 mm

7182019 BEDIA Level Monitoring

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page 22

Technical Data for minimum and maximum probes

Voltage rating DC 16 - 32 V

Power consumption typically 7 mA

Switching capacity 3 W (resistive load)

Output minus switching

Voltage drop approx 35 V with 3 W lamp load

Load dump protection 70 V 270 ns

Protection from fault conditions to VDE 0939

Lamp test in-built (approx 3 s)

Fault indicating delay approx 7 s

Free-wheeling diode Inductive loads A free wheeling diode eg 1N4007 has to bemounted at the load

Protection against reverse polarity in-built between plus and minus terminalObserve correct connection of plus and signal terminals

Operating temperature - 40degC to + 120degC

Storage temperature - 40degC to + 120degC

Admissible pressure on sensor 2 bar

Max tightening torque on thread 30 Nm

Mounting attitude optional

Housing brass MS CuZnPb3nickel-plated potential-free

Sensor coating Tefzel

983214

ETFE

Sensor brass MS CuZn39Pb3(immersed in the medium)

Weight approx 100 g

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2329

page 23

Level monitoring in the oil sump

Which are the benefits of a level monitoring system in the oil sump over conventional

pressure and temperature sensorsTemperature sensors indicate very slowly When motor oil is lost e g by tubing breakagethe component temperature can no longer be conducted to the sensors

The lower limit value of oil pressure switches or sensors is set low (low oil pressure with themotor running at no load) At rated motor speed and with too little oil in the oil circuit an oil-airmixture may be produced without that a signal is put out The components are no longer

sufficiently cooled and lubricatedIn the two events described above the output signal is available either too late or even not atall so that the motor will be damaged The level monitoring system however indicates even

before the oil level becomes too low i e as soon as the oil level has fallen 10 to 20 mmbelow the minimum marking on the dipstick Oil pressure and oil temperature indication isalways ensured

Functional diagram

Installation instructions

1 Drain the motor oil

2 Secure the adjustable elbow coupling with the tubing and the sensor support at themotor The sensor housing should be adjustable through oblong holes to determine theminimum point

3 Install the ventilation for the crankcase (e g inspection hole cover)

4 Install and connect the sensor

5 Check for correct electrical function The minimum sensor must indicate now

6 Refill the oil up to the minimum marking on the dipstick

7 Move the sensor and support slowly down until the signal is no longer availableTheswitch point of the sensor is now exactly at the minimum oil level of the motor

8 Move the sensor down by another 10 to 20 mm and fix it The signal bdquooil level too lowldquowill now be put out when the level is approx 10 to 20 mm below the minimum markingon the dipstick

Legend Ref Nr

1 Tubing complete with 350 mm pipecoupling

421 660

Tubing complete with 450 mm pipe

coupling

421 661

Tubing complete with 550 mm pipecoupling

421 659

2 Sensor support 454 134

3 PA pipe available in meters 421 662

4 Level monitoring sensor

Oil MIN 9 - 36 V 421 595Oil MAX 9 - 36 V 421 599

5 withoutcable

withcable

Straight connector 421 672 421 67090deg connector 421 673 421 671

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2429

page 24

Accessories

Plug Connection

1 Straight taper M 27 x 1 orstraight taper bayonet 16 S

2 Gripping seal-ring NW 103 Sleeve nut for NH9-1513

A A Tapered rubber ring must

point into the sleeve nutB B Tube polyflex NW 10Part-No 421 642 M 27 x 1

Part-No 421 672 Bayonet 16 S

Plug Connection

1 Taper M 27 x 1 90deg or

2 Tape 90deg bayonet 16 S3 Gripping seal-ring NW 10

A Tapered rubber ring mustpoint into the sleeve nut

B Tube polyflex NW 10

Part-No 421 643 M 27 x 1Part-No 421 673 Bayonet 16 S

Screw-in Adapter

Outside M 22 x 15Inside M 14 x 15

Part-No 421 640

Braze-in Adapter

Inside 14ldquo NPFTPart-No 421 641

Inside M 14 x 15Part-No 421 644

Cable and Plug

Connection for Probes Approved by Classifica-tion Societies

A Cablem Part-No 421 646

B Plug connectionPart-No 421 645

Plug connection fittedwith 2 m cablePart-No 421 647

Inside M 18 x 15

Part-No 421 648

7182019 BEDIA Level Monitoring

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page 25

Control and Power Supply Unit 110220 V AC 1224 V DC Order No 421 650

Up to three probes can

be fed from this powersupply unit A relay 3 Amax with one normally

open and one normallyclosed contact is fittedwhich can be used for

additional control tasks A power supply unit isavailable for connection

to 220 V

The voltage for the

relay contacts must notbe taken from thepower supply unit

Housing plastic with control lamps MIN + MAX 110 x 75 x 65 _________________________________________________________________________Control Unit Best-Nr 421 651

for automatic filling and emptying of liquids This unit is designed to control two bdquominimumldquoprobes Probe 2 monitors the maximum liquid level probe 1 the minimum level An outputrelay with a change-over contact is switched automatically for external control tasks

Relays 1 and 2 are switched to conduct when the liquids falls below minimum level Whenthe liquid level reaches maximum relay circuits 1 and 2 are automatically interrupted

LED-display

bull no display liquid level above

bull maximum LED bdquomaximumldquo lights liquid Level is between maximum and minimum andis falling

bull Both LEDrsquos light liquid level is below minimum or is between minimum and maximumand is rising Contacts r1 and r2 are closed

Two bdquominimumldquo minus switching probes with built-in control function are used for this

control The self-control is only visible when both probes are immersed in liquid The signalappears for about 2 seconds when the power supply is switched onFor this period the output (contact r1 and r2) is conducting The voltage for the relay contacts

must not be taken from the power supply unit

Technical Data for Control Unit

Operating 110220 V AC or 1224 V DC Mounting position variable

Relay relay contact t 3 Amax

Temperature - 30 degC to + 75 degC

Protective system IP 54

Control Unit for filling or emptying

Housing plastic with control lamp 110 x 75 x 65 Part No 421 651

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2629

page 26

Probes operating on the capacitive principle

This probe is self-adjustable and can be used for liquids including high viscosity media and

powders

Short description

This BEDIA-Level Sensor is suitable for liquids including high viscosity media and powdersIt operates on the principle of electrical capacitance changes arising when an electrodesurrounded by air is immersed in a media This capacitance change causes an electric

circuit to oscillate thus switching the output transistor off The use of latest state-of-the-arthybrid technology allows the probe and the electronic circuitry to be enclosed in a singlesealed unit

ApplicationThe BEDIA-Level Sensor with itrsquos large temperature range and wide sensitivity adjusting

range is suitable for a wide spread of applications process control petrochemical industrytank level monitoring bottle and crate washing systems in breweries etc

Operating modes

Minimum switching Normally the sensing probe is immersed and the green LED indicates

As the level drops below the probe the green LED extinguishes

Maximum switching Normally the sensing probe is not immersed and the green LED

indicates As the level rises above the probe the green LED extinguishes

Diagram of working method

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2729

page 27

Technical data

Circuit voltage 9 - 36 V DC Short circuit and overload

protectedPower consumption normal operation typ17 mA

fault operation typ10 mATime-delay typ01 sec

OutputTransistor plus switching 300 mA (500 mA short-time) short-circuit and overload proof with integral suppression diode

Terminal

configuration

max 1 mm2 screw terminals (AWG 17) Operating

temperature range

- 20degC to + 130degC

- 20degC to + 85degCMaterial - probe envelope PA 12-Gf

(polyamide with glass fibre)- fitting V2A (DIN 14305AISI 303)

- housing cover PA6-3-T (trogamide -transparent)

- O-ring FKM (viton)

Cable length max 300 m

Mounting plane horizontal (by preference Cable gland PG 7Max switchingpoint hysteresis

sensor diameter Mass ca 250 g

Cable automotive cable FLR 3 x 075 black Temp range -50degC to + 150degCBEDIA-part-no for cut goods 422 210

Dimensional diagram

A B BEDIA part no

G 34A 16mm 422 900

frac34ldquo NPT 21mm 422 901

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2829

page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2929

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 1829

page 18

Technical data for minimum and maximum probes

Operating voltage 9 - 13 V DC

Closed-circuit current consumption approx 6 mA

Sensing point 20 mm plusmn 6 mm from sensor tip

Power output at the signal output open collector Should be limited to max 20 mA

by the user

Storage temperature - 30degC to +125degCOperating temperature - 30degC to +125degC

Fault indicating delay approx 7 sec

Integral control function approx 2 sec

Shock 50 g half-sine 11 ms

Vibration to GL requirements for type certified tests

Admissible pressure on sensor 5 bar735 PSI

Environmental protection IP 65

Protection against reverse polarity in-built between plus and minus terminal

Mounting attitude horizontal preferred

Housing brass CuZn39Pb3

Sensor coating ETFE Tefzelreg

Weight with 10 m cable approx 800 g

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 1929

page 19

Certificate of Conformity BVS 94C1001

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2029

page 20

Certificate of Conformity BVS 94C1001

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2129

page 21

Conductivity probeEnvironmental protection 65 DIN 40050

Probe suitable for aqueous media

Conductivity probe with bayonet 16 S

Signal outputMinus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous liquids

Ref No

M 14 x 15 MIN 2 sec 7 sec 422 200

M 14 x 15 MAX 2 sec 7 sec 422 201

14ldquo NPTF MIN 2 sec 7 sec 422 20414ldquo NPTF MAX 2 sec 7 sec 422 205

Accessories for probes with bayonet 16 S

421 672 Straight connector for bayonet 16 S for corrugated tubing NW 10421 673 90deg connector for bayonet 16 S for corrugated tubing NW 10421 772 Straight connector for bayonet 16 S with 56 mm cable sealing421 773 90deg connector for bayonet 16 S with 56 mm cable sealing

421 670 Cable with connector 421 672 300 mm

421 018 Cable with connector 421 772 1015 mm421 586 Cable with connector 421 772 1300 mm

421 668 Cable with connector 421 772 3000 mm421 671 Cable with connector 421 673 300 mm

421 891 Cable with connector 421 773 800 mm

421 585 Cable with connector 421 773 1300 mm

421 669 Cable with connector 421 773 5000 mm

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2229

page 22

Technical Data for minimum and maximum probes

Voltage rating DC 16 - 32 V

Power consumption typically 7 mA

Switching capacity 3 W (resistive load)

Output minus switching

Voltage drop approx 35 V with 3 W lamp load

Load dump protection 70 V 270 ns

Protection from fault conditions to VDE 0939

Lamp test in-built (approx 3 s)

Fault indicating delay approx 7 s

Free-wheeling diode Inductive loads A free wheeling diode eg 1N4007 has to bemounted at the load

Protection against reverse polarity in-built between plus and minus terminalObserve correct connection of plus and signal terminals

Operating temperature - 40degC to + 120degC

Storage temperature - 40degC to + 120degC

Admissible pressure on sensor 2 bar

Max tightening torque on thread 30 Nm

Mounting attitude optional

Housing brass MS CuZnPb3nickel-plated potential-free

Sensor coating Tefzel

983214

ETFE

Sensor brass MS CuZn39Pb3(immersed in the medium)

Weight approx 100 g

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2329

page 23

Level monitoring in the oil sump

Which are the benefits of a level monitoring system in the oil sump over conventional

pressure and temperature sensorsTemperature sensors indicate very slowly When motor oil is lost e g by tubing breakagethe component temperature can no longer be conducted to the sensors

The lower limit value of oil pressure switches or sensors is set low (low oil pressure with themotor running at no load) At rated motor speed and with too little oil in the oil circuit an oil-airmixture may be produced without that a signal is put out The components are no longer

sufficiently cooled and lubricatedIn the two events described above the output signal is available either too late or even not atall so that the motor will be damaged The level monitoring system however indicates even

before the oil level becomes too low i e as soon as the oil level has fallen 10 to 20 mmbelow the minimum marking on the dipstick Oil pressure and oil temperature indication isalways ensured

Functional diagram

Installation instructions

1 Drain the motor oil

2 Secure the adjustable elbow coupling with the tubing and the sensor support at themotor The sensor housing should be adjustable through oblong holes to determine theminimum point

3 Install the ventilation for the crankcase (e g inspection hole cover)

4 Install and connect the sensor

5 Check for correct electrical function The minimum sensor must indicate now

6 Refill the oil up to the minimum marking on the dipstick

7 Move the sensor and support slowly down until the signal is no longer availableTheswitch point of the sensor is now exactly at the minimum oil level of the motor

8 Move the sensor down by another 10 to 20 mm and fix it The signal bdquooil level too lowldquowill now be put out when the level is approx 10 to 20 mm below the minimum markingon the dipstick

Legend Ref Nr

1 Tubing complete with 350 mm pipecoupling

421 660

Tubing complete with 450 mm pipe

coupling

421 661

Tubing complete with 550 mm pipecoupling

421 659

2 Sensor support 454 134

3 PA pipe available in meters 421 662

4 Level monitoring sensor

Oil MIN 9 - 36 V 421 595Oil MAX 9 - 36 V 421 599

5 withoutcable

withcable

Straight connector 421 672 421 67090deg connector 421 673 421 671

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2429

page 24

Accessories

Plug Connection

1 Straight taper M 27 x 1 orstraight taper bayonet 16 S

2 Gripping seal-ring NW 103 Sleeve nut for NH9-1513

A A Tapered rubber ring must

point into the sleeve nutB B Tube polyflex NW 10Part-No 421 642 M 27 x 1

Part-No 421 672 Bayonet 16 S

Plug Connection

1 Taper M 27 x 1 90deg or

2 Tape 90deg bayonet 16 S3 Gripping seal-ring NW 10

A Tapered rubber ring mustpoint into the sleeve nut

B Tube polyflex NW 10

Part-No 421 643 M 27 x 1Part-No 421 673 Bayonet 16 S

Screw-in Adapter

Outside M 22 x 15Inside M 14 x 15

Part-No 421 640

Braze-in Adapter

Inside 14ldquo NPFTPart-No 421 641

Inside M 14 x 15Part-No 421 644

Cable and Plug

Connection for Probes Approved by Classifica-tion Societies

A Cablem Part-No 421 646

B Plug connectionPart-No 421 645

Plug connection fittedwith 2 m cablePart-No 421 647

Inside M 18 x 15

Part-No 421 648

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2529

page 25

Control and Power Supply Unit 110220 V AC 1224 V DC Order No 421 650

Up to three probes can

be fed from this powersupply unit A relay 3 Amax with one normally

open and one normallyclosed contact is fittedwhich can be used for

additional control tasks A power supply unit isavailable for connection

to 220 V

The voltage for the

relay contacts must notbe taken from thepower supply unit

Housing plastic with control lamps MIN + MAX 110 x 75 x 65 _________________________________________________________________________Control Unit Best-Nr 421 651

for automatic filling and emptying of liquids This unit is designed to control two bdquominimumldquoprobes Probe 2 monitors the maximum liquid level probe 1 the minimum level An outputrelay with a change-over contact is switched automatically for external control tasks

Relays 1 and 2 are switched to conduct when the liquids falls below minimum level Whenthe liquid level reaches maximum relay circuits 1 and 2 are automatically interrupted

LED-display

bull no display liquid level above

bull maximum LED bdquomaximumldquo lights liquid Level is between maximum and minimum andis falling

bull Both LEDrsquos light liquid level is below minimum or is between minimum and maximumand is rising Contacts r1 and r2 are closed

Two bdquominimumldquo minus switching probes with built-in control function are used for this

control The self-control is only visible when both probes are immersed in liquid The signalappears for about 2 seconds when the power supply is switched onFor this period the output (contact r1 and r2) is conducting The voltage for the relay contacts

must not be taken from the power supply unit

Technical Data for Control Unit

Operating 110220 V AC or 1224 V DC Mounting position variable

Relay relay contact t 3 Amax

Temperature - 30 degC to + 75 degC

Protective system IP 54

Control Unit for filling or emptying

Housing plastic with control lamp 110 x 75 x 65 Part No 421 651

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2629

page 26

Probes operating on the capacitive principle

This probe is self-adjustable and can be used for liquids including high viscosity media and

powders

Short description

This BEDIA-Level Sensor is suitable for liquids including high viscosity media and powdersIt operates on the principle of electrical capacitance changes arising when an electrodesurrounded by air is immersed in a media This capacitance change causes an electric

circuit to oscillate thus switching the output transistor off The use of latest state-of-the-arthybrid technology allows the probe and the electronic circuitry to be enclosed in a singlesealed unit

ApplicationThe BEDIA-Level Sensor with itrsquos large temperature range and wide sensitivity adjusting

range is suitable for a wide spread of applications process control petrochemical industrytank level monitoring bottle and crate washing systems in breweries etc

Operating modes

Minimum switching Normally the sensing probe is immersed and the green LED indicates

As the level drops below the probe the green LED extinguishes

Maximum switching Normally the sensing probe is not immersed and the green LED

indicates As the level rises above the probe the green LED extinguishes

Diagram of working method

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2729

page 27

Technical data

Circuit voltage 9 - 36 V DC Short circuit and overload

protectedPower consumption normal operation typ17 mA

fault operation typ10 mATime-delay typ01 sec

OutputTransistor plus switching 300 mA (500 mA short-time) short-circuit and overload proof with integral suppression diode

Terminal

configuration

max 1 mm2 screw terminals (AWG 17) Operating

temperature range

- 20degC to + 130degC

- 20degC to + 85degCMaterial - probe envelope PA 12-Gf

(polyamide with glass fibre)- fitting V2A (DIN 14305AISI 303)

- housing cover PA6-3-T (trogamide -transparent)

- O-ring FKM (viton)

Cable length max 300 m

Mounting plane horizontal (by preference Cable gland PG 7Max switchingpoint hysteresis

sensor diameter Mass ca 250 g

Cable automotive cable FLR 3 x 075 black Temp range -50degC to + 150degCBEDIA-part-no for cut goods 422 210

Dimensional diagram

A B BEDIA part no

G 34A 16mm 422 900

frac34ldquo NPT 21mm 422 901

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2829

page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2929

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 1929

page 19

Certificate of Conformity BVS 94C1001

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2029

page 20

Certificate of Conformity BVS 94C1001

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2129

page 21

Conductivity probeEnvironmental protection 65 DIN 40050

Probe suitable for aqueous media

Conductivity probe with bayonet 16 S

Signal outputMinus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous liquids

Ref No

M 14 x 15 MIN 2 sec 7 sec 422 200

M 14 x 15 MAX 2 sec 7 sec 422 201

14ldquo NPTF MIN 2 sec 7 sec 422 20414ldquo NPTF MAX 2 sec 7 sec 422 205

Accessories for probes with bayonet 16 S

421 672 Straight connector for bayonet 16 S for corrugated tubing NW 10421 673 90deg connector for bayonet 16 S for corrugated tubing NW 10421 772 Straight connector for bayonet 16 S with 56 mm cable sealing421 773 90deg connector for bayonet 16 S with 56 mm cable sealing

421 670 Cable with connector 421 672 300 mm

421 018 Cable with connector 421 772 1015 mm421 586 Cable with connector 421 772 1300 mm

421 668 Cable with connector 421 772 3000 mm421 671 Cable with connector 421 673 300 mm

421 891 Cable with connector 421 773 800 mm

421 585 Cable with connector 421 773 1300 mm

421 669 Cable with connector 421 773 5000 mm

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2229

page 22

Technical Data for minimum and maximum probes

Voltage rating DC 16 - 32 V

Power consumption typically 7 mA

Switching capacity 3 W (resistive load)

Output minus switching

Voltage drop approx 35 V with 3 W lamp load

Load dump protection 70 V 270 ns

Protection from fault conditions to VDE 0939

Lamp test in-built (approx 3 s)

Fault indicating delay approx 7 s

Free-wheeling diode Inductive loads A free wheeling diode eg 1N4007 has to bemounted at the load

Protection against reverse polarity in-built between plus and minus terminalObserve correct connection of plus and signal terminals

Operating temperature - 40degC to + 120degC

Storage temperature - 40degC to + 120degC

Admissible pressure on sensor 2 bar

Max tightening torque on thread 30 Nm

Mounting attitude optional

Housing brass MS CuZnPb3nickel-plated potential-free

Sensor coating Tefzel

983214

ETFE

Sensor brass MS CuZn39Pb3(immersed in the medium)

Weight approx 100 g

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2329

page 23

Level monitoring in the oil sump

Which are the benefits of a level monitoring system in the oil sump over conventional

pressure and temperature sensorsTemperature sensors indicate very slowly When motor oil is lost e g by tubing breakagethe component temperature can no longer be conducted to the sensors

The lower limit value of oil pressure switches or sensors is set low (low oil pressure with themotor running at no load) At rated motor speed and with too little oil in the oil circuit an oil-airmixture may be produced without that a signal is put out The components are no longer

sufficiently cooled and lubricatedIn the two events described above the output signal is available either too late or even not atall so that the motor will be damaged The level monitoring system however indicates even

before the oil level becomes too low i e as soon as the oil level has fallen 10 to 20 mmbelow the minimum marking on the dipstick Oil pressure and oil temperature indication isalways ensured

Functional diagram

Installation instructions

1 Drain the motor oil

2 Secure the adjustable elbow coupling with the tubing and the sensor support at themotor The sensor housing should be adjustable through oblong holes to determine theminimum point

3 Install the ventilation for the crankcase (e g inspection hole cover)

4 Install and connect the sensor

5 Check for correct electrical function The minimum sensor must indicate now

6 Refill the oil up to the minimum marking on the dipstick

7 Move the sensor and support slowly down until the signal is no longer availableTheswitch point of the sensor is now exactly at the minimum oil level of the motor

8 Move the sensor down by another 10 to 20 mm and fix it The signal bdquooil level too lowldquowill now be put out when the level is approx 10 to 20 mm below the minimum markingon the dipstick

Legend Ref Nr

1 Tubing complete with 350 mm pipecoupling

421 660

Tubing complete with 450 mm pipe

coupling

421 661

Tubing complete with 550 mm pipecoupling

421 659

2 Sensor support 454 134

3 PA pipe available in meters 421 662

4 Level monitoring sensor

Oil MIN 9 - 36 V 421 595Oil MAX 9 - 36 V 421 599

5 withoutcable

withcable

Straight connector 421 672 421 67090deg connector 421 673 421 671

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2429

page 24

Accessories

Plug Connection

1 Straight taper M 27 x 1 orstraight taper bayonet 16 S

2 Gripping seal-ring NW 103 Sleeve nut for NH9-1513

A A Tapered rubber ring must

point into the sleeve nutB B Tube polyflex NW 10Part-No 421 642 M 27 x 1

Part-No 421 672 Bayonet 16 S

Plug Connection

1 Taper M 27 x 1 90deg or

2 Tape 90deg bayonet 16 S3 Gripping seal-ring NW 10

A Tapered rubber ring mustpoint into the sleeve nut

B Tube polyflex NW 10

Part-No 421 643 M 27 x 1Part-No 421 673 Bayonet 16 S

Screw-in Adapter

Outside M 22 x 15Inside M 14 x 15

Part-No 421 640

Braze-in Adapter

Inside 14ldquo NPFTPart-No 421 641

Inside M 14 x 15Part-No 421 644

Cable and Plug

Connection for Probes Approved by Classifica-tion Societies

A Cablem Part-No 421 646

B Plug connectionPart-No 421 645

Plug connection fittedwith 2 m cablePart-No 421 647

Inside M 18 x 15

Part-No 421 648

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2529

page 25

Control and Power Supply Unit 110220 V AC 1224 V DC Order No 421 650

Up to three probes can

be fed from this powersupply unit A relay 3 Amax with one normally

open and one normallyclosed contact is fittedwhich can be used for

additional control tasks A power supply unit isavailable for connection

to 220 V

The voltage for the

relay contacts must notbe taken from thepower supply unit

Housing plastic with control lamps MIN + MAX 110 x 75 x 65 _________________________________________________________________________Control Unit Best-Nr 421 651

for automatic filling and emptying of liquids This unit is designed to control two bdquominimumldquoprobes Probe 2 monitors the maximum liquid level probe 1 the minimum level An outputrelay with a change-over contact is switched automatically for external control tasks

Relays 1 and 2 are switched to conduct when the liquids falls below minimum level Whenthe liquid level reaches maximum relay circuits 1 and 2 are automatically interrupted

LED-display

bull no display liquid level above

bull maximum LED bdquomaximumldquo lights liquid Level is between maximum and minimum andis falling

bull Both LEDrsquos light liquid level is below minimum or is between minimum and maximumand is rising Contacts r1 and r2 are closed

Two bdquominimumldquo minus switching probes with built-in control function are used for this

control The self-control is only visible when both probes are immersed in liquid The signalappears for about 2 seconds when the power supply is switched onFor this period the output (contact r1 and r2) is conducting The voltage for the relay contacts

must not be taken from the power supply unit

Technical Data for Control Unit

Operating 110220 V AC or 1224 V DC Mounting position variable

Relay relay contact t 3 Amax

Temperature - 30 degC to + 75 degC

Protective system IP 54

Control Unit for filling or emptying

Housing plastic with control lamp 110 x 75 x 65 Part No 421 651

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2629

page 26

Probes operating on the capacitive principle

This probe is self-adjustable and can be used for liquids including high viscosity media and

powders

Short description

This BEDIA-Level Sensor is suitable for liquids including high viscosity media and powdersIt operates on the principle of electrical capacitance changes arising when an electrodesurrounded by air is immersed in a media This capacitance change causes an electric

circuit to oscillate thus switching the output transistor off The use of latest state-of-the-arthybrid technology allows the probe and the electronic circuitry to be enclosed in a singlesealed unit

ApplicationThe BEDIA-Level Sensor with itrsquos large temperature range and wide sensitivity adjusting

range is suitable for a wide spread of applications process control petrochemical industrytank level monitoring bottle and crate washing systems in breweries etc

Operating modes

Minimum switching Normally the sensing probe is immersed and the green LED indicates

As the level drops below the probe the green LED extinguishes

Maximum switching Normally the sensing probe is not immersed and the green LED

indicates As the level rises above the probe the green LED extinguishes

Diagram of working method

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2729

page 27

Technical data

Circuit voltage 9 - 36 V DC Short circuit and overload

protectedPower consumption normal operation typ17 mA

fault operation typ10 mATime-delay typ01 sec

OutputTransistor plus switching 300 mA (500 mA short-time) short-circuit and overload proof with integral suppression diode

Terminal

configuration

max 1 mm2 screw terminals (AWG 17) Operating

temperature range

- 20degC to + 130degC

- 20degC to + 85degCMaterial - probe envelope PA 12-Gf

(polyamide with glass fibre)- fitting V2A (DIN 14305AISI 303)

- housing cover PA6-3-T (trogamide -transparent)

- O-ring FKM (viton)

Cable length max 300 m

Mounting plane horizontal (by preference Cable gland PG 7Max switchingpoint hysteresis

sensor diameter Mass ca 250 g

Cable automotive cable FLR 3 x 075 black Temp range -50degC to + 150degCBEDIA-part-no for cut goods 422 210

Dimensional diagram

A B BEDIA part no

G 34A 16mm 422 900

frac34ldquo NPT 21mm 422 901

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2829

page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2929

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2029

page 20

Certificate of Conformity BVS 94C1001

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2129

page 21

Conductivity probeEnvironmental protection 65 DIN 40050

Probe suitable for aqueous media

Conductivity probe with bayonet 16 S

Signal outputMinus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous liquids

Ref No

M 14 x 15 MIN 2 sec 7 sec 422 200

M 14 x 15 MAX 2 sec 7 sec 422 201

14ldquo NPTF MIN 2 sec 7 sec 422 20414ldquo NPTF MAX 2 sec 7 sec 422 205

Accessories for probes with bayonet 16 S

421 672 Straight connector for bayonet 16 S for corrugated tubing NW 10421 673 90deg connector for bayonet 16 S for corrugated tubing NW 10421 772 Straight connector for bayonet 16 S with 56 mm cable sealing421 773 90deg connector for bayonet 16 S with 56 mm cable sealing

421 670 Cable with connector 421 672 300 mm

421 018 Cable with connector 421 772 1015 mm421 586 Cable with connector 421 772 1300 mm

421 668 Cable with connector 421 772 3000 mm421 671 Cable with connector 421 673 300 mm

421 891 Cable with connector 421 773 800 mm

421 585 Cable with connector 421 773 1300 mm

421 669 Cable with connector 421 773 5000 mm

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2229

page 22

Technical Data for minimum and maximum probes

Voltage rating DC 16 - 32 V

Power consumption typically 7 mA

Switching capacity 3 W (resistive load)

Output minus switching

Voltage drop approx 35 V with 3 W lamp load

Load dump protection 70 V 270 ns

Protection from fault conditions to VDE 0939

Lamp test in-built (approx 3 s)

Fault indicating delay approx 7 s

Free-wheeling diode Inductive loads A free wheeling diode eg 1N4007 has to bemounted at the load

Protection against reverse polarity in-built between plus and minus terminalObserve correct connection of plus and signal terminals

Operating temperature - 40degC to + 120degC

Storage temperature - 40degC to + 120degC

Admissible pressure on sensor 2 bar

Max tightening torque on thread 30 Nm

Mounting attitude optional

Housing brass MS CuZnPb3nickel-plated potential-free

Sensor coating Tefzel

983214

ETFE

Sensor brass MS CuZn39Pb3(immersed in the medium)

Weight approx 100 g

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2329

page 23

Level monitoring in the oil sump

Which are the benefits of a level monitoring system in the oil sump over conventional

pressure and temperature sensorsTemperature sensors indicate very slowly When motor oil is lost e g by tubing breakagethe component temperature can no longer be conducted to the sensors

The lower limit value of oil pressure switches or sensors is set low (low oil pressure with themotor running at no load) At rated motor speed and with too little oil in the oil circuit an oil-airmixture may be produced without that a signal is put out The components are no longer

sufficiently cooled and lubricatedIn the two events described above the output signal is available either too late or even not atall so that the motor will be damaged The level monitoring system however indicates even

before the oil level becomes too low i e as soon as the oil level has fallen 10 to 20 mmbelow the minimum marking on the dipstick Oil pressure and oil temperature indication isalways ensured

Functional diagram

Installation instructions

1 Drain the motor oil

2 Secure the adjustable elbow coupling with the tubing and the sensor support at themotor The sensor housing should be adjustable through oblong holes to determine theminimum point

3 Install the ventilation for the crankcase (e g inspection hole cover)

4 Install and connect the sensor

5 Check for correct electrical function The minimum sensor must indicate now

6 Refill the oil up to the minimum marking on the dipstick

7 Move the sensor and support slowly down until the signal is no longer availableTheswitch point of the sensor is now exactly at the minimum oil level of the motor

8 Move the sensor down by another 10 to 20 mm and fix it The signal bdquooil level too lowldquowill now be put out when the level is approx 10 to 20 mm below the minimum markingon the dipstick

Legend Ref Nr

1 Tubing complete with 350 mm pipecoupling

421 660

Tubing complete with 450 mm pipe

coupling

421 661

Tubing complete with 550 mm pipecoupling

421 659

2 Sensor support 454 134

3 PA pipe available in meters 421 662

4 Level monitoring sensor

Oil MIN 9 - 36 V 421 595Oil MAX 9 - 36 V 421 599

5 withoutcable

withcable

Straight connector 421 672 421 67090deg connector 421 673 421 671

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2429

page 24

Accessories

Plug Connection

1 Straight taper M 27 x 1 orstraight taper bayonet 16 S

2 Gripping seal-ring NW 103 Sleeve nut for NH9-1513

A A Tapered rubber ring must

point into the sleeve nutB B Tube polyflex NW 10Part-No 421 642 M 27 x 1

Part-No 421 672 Bayonet 16 S

Plug Connection

1 Taper M 27 x 1 90deg or

2 Tape 90deg bayonet 16 S3 Gripping seal-ring NW 10

A Tapered rubber ring mustpoint into the sleeve nut

B Tube polyflex NW 10

Part-No 421 643 M 27 x 1Part-No 421 673 Bayonet 16 S

Screw-in Adapter

Outside M 22 x 15Inside M 14 x 15

Part-No 421 640

Braze-in Adapter

Inside 14ldquo NPFTPart-No 421 641

Inside M 14 x 15Part-No 421 644

Cable and Plug

Connection for Probes Approved by Classifica-tion Societies

A Cablem Part-No 421 646

B Plug connectionPart-No 421 645

Plug connection fittedwith 2 m cablePart-No 421 647

Inside M 18 x 15

Part-No 421 648

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2529

page 25

Control and Power Supply Unit 110220 V AC 1224 V DC Order No 421 650

Up to three probes can

be fed from this powersupply unit A relay 3 Amax with one normally

open and one normallyclosed contact is fittedwhich can be used for

additional control tasks A power supply unit isavailable for connection

to 220 V

The voltage for the

relay contacts must notbe taken from thepower supply unit

Housing plastic with control lamps MIN + MAX 110 x 75 x 65 _________________________________________________________________________Control Unit Best-Nr 421 651

for automatic filling and emptying of liquids This unit is designed to control two bdquominimumldquoprobes Probe 2 monitors the maximum liquid level probe 1 the minimum level An outputrelay with a change-over contact is switched automatically for external control tasks

Relays 1 and 2 are switched to conduct when the liquids falls below minimum level Whenthe liquid level reaches maximum relay circuits 1 and 2 are automatically interrupted

LED-display

bull no display liquid level above

bull maximum LED bdquomaximumldquo lights liquid Level is between maximum and minimum andis falling

bull Both LEDrsquos light liquid level is below minimum or is between minimum and maximumand is rising Contacts r1 and r2 are closed

Two bdquominimumldquo minus switching probes with built-in control function are used for this

control The self-control is only visible when both probes are immersed in liquid The signalappears for about 2 seconds when the power supply is switched onFor this period the output (contact r1 and r2) is conducting The voltage for the relay contacts

must not be taken from the power supply unit

Technical Data for Control Unit

Operating 110220 V AC or 1224 V DC Mounting position variable

Relay relay contact t 3 Amax

Temperature - 30 degC to + 75 degC

Protective system IP 54

Control Unit for filling or emptying

Housing plastic with control lamp 110 x 75 x 65 Part No 421 651

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2629

page 26

Probes operating on the capacitive principle

This probe is self-adjustable and can be used for liquids including high viscosity media and

powders

Short description

This BEDIA-Level Sensor is suitable for liquids including high viscosity media and powdersIt operates on the principle of electrical capacitance changes arising when an electrodesurrounded by air is immersed in a media This capacitance change causes an electric

circuit to oscillate thus switching the output transistor off The use of latest state-of-the-arthybrid technology allows the probe and the electronic circuitry to be enclosed in a singlesealed unit

ApplicationThe BEDIA-Level Sensor with itrsquos large temperature range and wide sensitivity adjusting

range is suitable for a wide spread of applications process control petrochemical industrytank level monitoring bottle and crate washing systems in breweries etc

Operating modes

Minimum switching Normally the sensing probe is immersed and the green LED indicates

As the level drops below the probe the green LED extinguishes

Maximum switching Normally the sensing probe is not immersed and the green LED

indicates As the level rises above the probe the green LED extinguishes

Diagram of working method

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2729

page 27

Technical data

Circuit voltage 9 - 36 V DC Short circuit and overload

protectedPower consumption normal operation typ17 mA

fault operation typ10 mATime-delay typ01 sec

OutputTransistor plus switching 300 mA (500 mA short-time) short-circuit and overload proof with integral suppression diode

Terminal

configuration

max 1 mm2 screw terminals (AWG 17) Operating

temperature range

- 20degC to + 130degC

- 20degC to + 85degCMaterial - probe envelope PA 12-Gf

(polyamide with glass fibre)- fitting V2A (DIN 14305AISI 303)

- housing cover PA6-3-T (trogamide -transparent)

- O-ring FKM (viton)

Cable length max 300 m

Mounting plane horizontal (by preference Cable gland PG 7Max switchingpoint hysteresis

sensor diameter Mass ca 250 g

Cable automotive cable FLR 3 x 075 black Temp range -50degC to + 150degCBEDIA-part-no for cut goods 422 210

Dimensional diagram

A B BEDIA part no

G 34A 16mm 422 900

frac34ldquo NPT 21mm 422 901

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2829

page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2929

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2129

page 21

Conductivity probeEnvironmental protection 65 DIN 40050

Probe suitable for aqueous media

Conductivity probe with bayonet 16 S

Signal outputMinus potential

Thread Monitoring

display

Integral

controlfunction

Monitoring

delay

Aqueous liquids

Ref No

M 14 x 15 MIN 2 sec 7 sec 422 200

M 14 x 15 MAX 2 sec 7 sec 422 201

14ldquo NPTF MIN 2 sec 7 sec 422 20414ldquo NPTF MAX 2 sec 7 sec 422 205

Accessories for probes with bayonet 16 S

421 672 Straight connector for bayonet 16 S for corrugated tubing NW 10421 673 90deg connector for bayonet 16 S for corrugated tubing NW 10421 772 Straight connector for bayonet 16 S with 56 mm cable sealing421 773 90deg connector for bayonet 16 S with 56 mm cable sealing

421 670 Cable with connector 421 672 300 mm

421 018 Cable with connector 421 772 1015 mm421 586 Cable with connector 421 772 1300 mm

421 668 Cable with connector 421 772 3000 mm421 671 Cable with connector 421 673 300 mm

421 891 Cable with connector 421 773 800 mm

421 585 Cable with connector 421 773 1300 mm

421 669 Cable with connector 421 773 5000 mm

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2229

page 22

Technical Data for minimum and maximum probes

Voltage rating DC 16 - 32 V

Power consumption typically 7 mA

Switching capacity 3 W (resistive load)

Output minus switching

Voltage drop approx 35 V with 3 W lamp load

Load dump protection 70 V 270 ns

Protection from fault conditions to VDE 0939

Lamp test in-built (approx 3 s)

Fault indicating delay approx 7 s

Free-wheeling diode Inductive loads A free wheeling diode eg 1N4007 has to bemounted at the load

Protection against reverse polarity in-built between plus and minus terminalObserve correct connection of plus and signal terminals

Operating temperature - 40degC to + 120degC

Storage temperature - 40degC to + 120degC

Admissible pressure on sensor 2 bar

Max tightening torque on thread 30 Nm

Mounting attitude optional

Housing brass MS CuZnPb3nickel-plated potential-free

Sensor coating Tefzel

983214

ETFE

Sensor brass MS CuZn39Pb3(immersed in the medium)

Weight approx 100 g

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2329

page 23

Level monitoring in the oil sump

Which are the benefits of a level monitoring system in the oil sump over conventional

pressure and temperature sensorsTemperature sensors indicate very slowly When motor oil is lost e g by tubing breakagethe component temperature can no longer be conducted to the sensors

The lower limit value of oil pressure switches or sensors is set low (low oil pressure with themotor running at no load) At rated motor speed and with too little oil in the oil circuit an oil-airmixture may be produced without that a signal is put out The components are no longer

sufficiently cooled and lubricatedIn the two events described above the output signal is available either too late or even not atall so that the motor will be damaged The level monitoring system however indicates even

before the oil level becomes too low i e as soon as the oil level has fallen 10 to 20 mmbelow the minimum marking on the dipstick Oil pressure and oil temperature indication isalways ensured

Functional diagram

Installation instructions

1 Drain the motor oil

2 Secure the adjustable elbow coupling with the tubing and the sensor support at themotor The sensor housing should be adjustable through oblong holes to determine theminimum point

3 Install the ventilation for the crankcase (e g inspection hole cover)

4 Install and connect the sensor

5 Check for correct electrical function The minimum sensor must indicate now

6 Refill the oil up to the minimum marking on the dipstick

7 Move the sensor and support slowly down until the signal is no longer availableTheswitch point of the sensor is now exactly at the minimum oil level of the motor

8 Move the sensor down by another 10 to 20 mm and fix it The signal bdquooil level too lowldquowill now be put out when the level is approx 10 to 20 mm below the minimum markingon the dipstick

Legend Ref Nr

1 Tubing complete with 350 mm pipecoupling

421 660

Tubing complete with 450 mm pipe

coupling

421 661

Tubing complete with 550 mm pipecoupling

421 659

2 Sensor support 454 134

3 PA pipe available in meters 421 662

4 Level monitoring sensor

Oil MIN 9 - 36 V 421 595Oil MAX 9 - 36 V 421 599

5 withoutcable

withcable

Straight connector 421 672 421 67090deg connector 421 673 421 671

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2429

page 24

Accessories

Plug Connection

1 Straight taper M 27 x 1 orstraight taper bayonet 16 S

2 Gripping seal-ring NW 103 Sleeve nut for NH9-1513

A A Tapered rubber ring must

point into the sleeve nutB B Tube polyflex NW 10Part-No 421 642 M 27 x 1

Part-No 421 672 Bayonet 16 S

Plug Connection

1 Taper M 27 x 1 90deg or

2 Tape 90deg bayonet 16 S3 Gripping seal-ring NW 10

A Tapered rubber ring mustpoint into the sleeve nut

B Tube polyflex NW 10

Part-No 421 643 M 27 x 1Part-No 421 673 Bayonet 16 S

Screw-in Adapter

Outside M 22 x 15Inside M 14 x 15

Part-No 421 640

Braze-in Adapter

Inside 14ldquo NPFTPart-No 421 641

Inside M 14 x 15Part-No 421 644

Cable and Plug

Connection for Probes Approved by Classifica-tion Societies

A Cablem Part-No 421 646

B Plug connectionPart-No 421 645

Plug connection fittedwith 2 m cablePart-No 421 647

Inside M 18 x 15

Part-No 421 648

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2529

page 25

Control and Power Supply Unit 110220 V AC 1224 V DC Order No 421 650

Up to three probes can

be fed from this powersupply unit A relay 3 Amax with one normally

open and one normallyclosed contact is fittedwhich can be used for

additional control tasks A power supply unit isavailable for connection

to 220 V

The voltage for the

relay contacts must notbe taken from thepower supply unit

Housing plastic with control lamps MIN + MAX 110 x 75 x 65 _________________________________________________________________________Control Unit Best-Nr 421 651

for automatic filling and emptying of liquids This unit is designed to control two bdquominimumldquoprobes Probe 2 monitors the maximum liquid level probe 1 the minimum level An outputrelay with a change-over contact is switched automatically for external control tasks

Relays 1 and 2 are switched to conduct when the liquids falls below minimum level Whenthe liquid level reaches maximum relay circuits 1 and 2 are automatically interrupted

LED-display

bull no display liquid level above

bull maximum LED bdquomaximumldquo lights liquid Level is between maximum and minimum andis falling

bull Both LEDrsquos light liquid level is below minimum or is between minimum and maximumand is rising Contacts r1 and r2 are closed

Two bdquominimumldquo minus switching probes with built-in control function are used for this

control The self-control is only visible when both probes are immersed in liquid The signalappears for about 2 seconds when the power supply is switched onFor this period the output (contact r1 and r2) is conducting The voltage for the relay contacts

must not be taken from the power supply unit

Technical Data for Control Unit

Operating 110220 V AC or 1224 V DC Mounting position variable

Relay relay contact t 3 Amax

Temperature - 30 degC to + 75 degC

Protective system IP 54

Control Unit for filling or emptying

Housing plastic with control lamp 110 x 75 x 65 Part No 421 651

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2629

page 26

Probes operating on the capacitive principle

This probe is self-adjustable and can be used for liquids including high viscosity media and

powders

Short description

This BEDIA-Level Sensor is suitable for liquids including high viscosity media and powdersIt operates on the principle of electrical capacitance changes arising when an electrodesurrounded by air is immersed in a media This capacitance change causes an electric

circuit to oscillate thus switching the output transistor off The use of latest state-of-the-arthybrid technology allows the probe and the electronic circuitry to be enclosed in a singlesealed unit

ApplicationThe BEDIA-Level Sensor with itrsquos large temperature range and wide sensitivity adjusting

range is suitable for a wide spread of applications process control petrochemical industrytank level monitoring bottle and crate washing systems in breweries etc

Operating modes

Minimum switching Normally the sensing probe is immersed and the green LED indicates

As the level drops below the probe the green LED extinguishes

Maximum switching Normally the sensing probe is not immersed and the green LED

indicates As the level rises above the probe the green LED extinguishes

Diagram of working method

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2729

page 27

Technical data

Circuit voltage 9 - 36 V DC Short circuit and overload

protectedPower consumption normal operation typ17 mA

fault operation typ10 mATime-delay typ01 sec

OutputTransistor plus switching 300 mA (500 mA short-time) short-circuit and overload proof with integral suppression diode

Terminal

configuration

max 1 mm2 screw terminals (AWG 17) Operating

temperature range

- 20degC to + 130degC

- 20degC to + 85degCMaterial - probe envelope PA 12-Gf

(polyamide with glass fibre)- fitting V2A (DIN 14305AISI 303)

- housing cover PA6-3-T (trogamide -transparent)

- O-ring FKM (viton)

Cable length max 300 m

Mounting plane horizontal (by preference Cable gland PG 7Max switchingpoint hysteresis

sensor diameter Mass ca 250 g

Cable automotive cable FLR 3 x 075 black Temp range -50degC to + 150degCBEDIA-part-no for cut goods 422 210

Dimensional diagram

A B BEDIA part no

G 34A 16mm 422 900

frac34ldquo NPT 21mm 422 901

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2829

page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2929

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2229

page 22

Technical Data for minimum and maximum probes

Voltage rating DC 16 - 32 V

Power consumption typically 7 mA

Switching capacity 3 W (resistive load)

Output minus switching

Voltage drop approx 35 V with 3 W lamp load

Load dump protection 70 V 270 ns

Protection from fault conditions to VDE 0939

Lamp test in-built (approx 3 s)

Fault indicating delay approx 7 s

Free-wheeling diode Inductive loads A free wheeling diode eg 1N4007 has to bemounted at the load

Protection against reverse polarity in-built between plus and minus terminalObserve correct connection of plus and signal terminals

Operating temperature - 40degC to + 120degC

Storage temperature - 40degC to + 120degC

Admissible pressure on sensor 2 bar

Max tightening torque on thread 30 Nm

Mounting attitude optional

Housing brass MS CuZnPb3nickel-plated potential-free

Sensor coating Tefzel

983214

ETFE

Sensor brass MS CuZn39Pb3(immersed in the medium)

Weight approx 100 g

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2329

page 23

Level monitoring in the oil sump

Which are the benefits of a level monitoring system in the oil sump over conventional

pressure and temperature sensorsTemperature sensors indicate very slowly When motor oil is lost e g by tubing breakagethe component temperature can no longer be conducted to the sensors

The lower limit value of oil pressure switches or sensors is set low (low oil pressure with themotor running at no load) At rated motor speed and with too little oil in the oil circuit an oil-airmixture may be produced without that a signal is put out The components are no longer

sufficiently cooled and lubricatedIn the two events described above the output signal is available either too late or even not atall so that the motor will be damaged The level monitoring system however indicates even

before the oil level becomes too low i e as soon as the oil level has fallen 10 to 20 mmbelow the minimum marking on the dipstick Oil pressure and oil temperature indication isalways ensured

Functional diagram

Installation instructions

1 Drain the motor oil

2 Secure the adjustable elbow coupling with the tubing and the sensor support at themotor The sensor housing should be adjustable through oblong holes to determine theminimum point

3 Install the ventilation for the crankcase (e g inspection hole cover)

4 Install and connect the sensor

5 Check for correct electrical function The minimum sensor must indicate now

6 Refill the oil up to the minimum marking on the dipstick

7 Move the sensor and support slowly down until the signal is no longer availableTheswitch point of the sensor is now exactly at the minimum oil level of the motor

8 Move the sensor down by another 10 to 20 mm and fix it The signal bdquooil level too lowldquowill now be put out when the level is approx 10 to 20 mm below the minimum markingon the dipstick

Legend Ref Nr

1 Tubing complete with 350 mm pipecoupling

421 660

Tubing complete with 450 mm pipe

coupling

421 661

Tubing complete with 550 mm pipecoupling

421 659

2 Sensor support 454 134

3 PA pipe available in meters 421 662

4 Level monitoring sensor

Oil MIN 9 - 36 V 421 595Oil MAX 9 - 36 V 421 599

5 withoutcable

withcable

Straight connector 421 672 421 67090deg connector 421 673 421 671

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2429

page 24

Accessories

Plug Connection

1 Straight taper M 27 x 1 orstraight taper bayonet 16 S

2 Gripping seal-ring NW 103 Sleeve nut for NH9-1513

A A Tapered rubber ring must

point into the sleeve nutB B Tube polyflex NW 10Part-No 421 642 M 27 x 1

Part-No 421 672 Bayonet 16 S

Plug Connection

1 Taper M 27 x 1 90deg or

2 Tape 90deg bayonet 16 S3 Gripping seal-ring NW 10

A Tapered rubber ring mustpoint into the sleeve nut

B Tube polyflex NW 10

Part-No 421 643 M 27 x 1Part-No 421 673 Bayonet 16 S

Screw-in Adapter

Outside M 22 x 15Inside M 14 x 15

Part-No 421 640

Braze-in Adapter

Inside 14ldquo NPFTPart-No 421 641

Inside M 14 x 15Part-No 421 644

Cable and Plug

Connection for Probes Approved by Classifica-tion Societies

A Cablem Part-No 421 646

B Plug connectionPart-No 421 645

Plug connection fittedwith 2 m cablePart-No 421 647

Inside M 18 x 15

Part-No 421 648

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2529

page 25

Control and Power Supply Unit 110220 V AC 1224 V DC Order No 421 650

Up to three probes can

be fed from this powersupply unit A relay 3 Amax with one normally

open and one normallyclosed contact is fittedwhich can be used for

additional control tasks A power supply unit isavailable for connection

to 220 V

The voltage for the

relay contacts must notbe taken from thepower supply unit

Housing plastic with control lamps MIN + MAX 110 x 75 x 65 _________________________________________________________________________Control Unit Best-Nr 421 651

for automatic filling and emptying of liquids This unit is designed to control two bdquominimumldquoprobes Probe 2 monitors the maximum liquid level probe 1 the minimum level An outputrelay with a change-over contact is switched automatically for external control tasks

Relays 1 and 2 are switched to conduct when the liquids falls below minimum level Whenthe liquid level reaches maximum relay circuits 1 and 2 are automatically interrupted

LED-display

bull no display liquid level above

bull maximum LED bdquomaximumldquo lights liquid Level is between maximum and minimum andis falling

bull Both LEDrsquos light liquid level is below minimum or is between minimum and maximumand is rising Contacts r1 and r2 are closed

Two bdquominimumldquo minus switching probes with built-in control function are used for this

control The self-control is only visible when both probes are immersed in liquid The signalappears for about 2 seconds when the power supply is switched onFor this period the output (contact r1 and r2) is conducting The voltage for the relay contacts

must not be taken from the power supply unit

Technical Data for Control Unit

Operating 110220 V AC or 1224 V DC Mounting position variable

Relay relay contact t 3 Amax

Temperature - 30 degC to + 75 degC

Protective system IP 54

Control Unit for filling or emptying

Housing plastic with control lamp 110 x 75 x 65 Part No 421 651

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2629

page 26

Probes operating on the capacitive principle

This probe is self-adjustable and can be used for liquids including high viscosity media and

powders

Short description

This BEDIA-Level Sensor is suitable for liquids including high viscosity media and powdersIt operates on the principle of electrical capacitance changes arising when an electrodesurrounded by air is immersed in a media This capacitance change causes an electric

circuit to oscillate thus switching the output transistor off The use of latest state-of-the-arthybrid technology allows the probe and the electronic circuitry to be enclosed in a singlesealed unit

ApplicationThe BEDIA-Level Sensor with itrsquos large temperature range and wide sensitivity adjusting

range is suitable for a wide spread of applications process control petrochemical industrytank level monitoring bottle and crate washing systems in breweries etc

Operating modes

Minimum switching Normally the sensing probe is immersed and the green LED indicates

As the level drops below the probe the green LED extinguishes

Maximum switching Normally the sensing probe is not immersed and the green LED

indicates As the level rises above the probe the green LED extinguishes

Diagram of working method

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2729

page 27

Technical data

Circuit voltage 9 - 36 V DC Short circuit and overload

protectedPower consumption normal operation typ17 mA

fault operation typ10 mATime-delay typ01 sec

OutputTransistor plus switching 300 mA (500 mA short-time) short-circuit and overload proof with integral suppression diode

Terminal

configuration

max 1 mm2 screw terminals (AWG 17) Operating

temperature range

- 20degC to + 130degC

- 20degC to + 85degCMaterial - probe envelope PA 12-Gf

(polyamide with glass fibre)- fitting V2A (DIN 14305AISI 303)

- housing cover PA6-3-T (trogamide -transparent)

- O-ring FKM (viton)

Cable length max 300 m

Mounting plane horizontal (by preference Cable gland PG 7Max switchingpoint hysteresis

sensor diameter Mass ca 250 g

Cable automotive cable FLR 3 x 075 black Temp range -50degC to + 150degCBEDIA-part-no for cut goods 422 210

Dimensional diagram

A B BEDIA part no

G 34A 16mm 422 900

frac34ldquo NPT 21mm 422 901

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2829

page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2929

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2329

page 23

Level monitoring in the oil sump

Which are the benefits of a level monitoring system in the oil sump over conventional

pressure and temperature sensorsTemperature sensors indicate very slowly When motor oil is lost e g by tubing breakagethe component temperature can no longer be conducted to the sensors

The lower limit value of oil pressure switches or sensors is set low (low oil pressure with themotor running at no load) At rated motor speed and with too little oil in the oil circuit an oil-airmixture may be produced without that a signal is put out The components are no longer

sufficiently cooled and lubricatedIn the two events described above the output signal is available either too late or even not atall so that the motor will be damaged The level monitoring system however indicates even

before the oil level becomes too low i e as soon as the oil level has fallen 10 to 20 mmbelow the minimum marking on the dipstick Oil pressure and oil temperature indication isalways ensured

Functional diagram

Installation instructions

1 Drain the motor oil

2 Secure the adjustable elbow coupling with the tubing and the sensor support at themotor The sensor housing should be adjustable through oblong holes to determine theminimum point

3 Install the ventilation for the crankcase (e g inspection hole cover)

4 Install and connect the sensor

5 Check for correct electrical function The minimum sensor must indicate now

6 Refill the oil up to the minimum marking on the dipstick

7 Move the sensor and support slowly down until the signal is no longer availableTheswitch point of the sensor is now exactly at the minimum oil level of the motor

8 Move the sensor down by another 10 to 20 mm and fix it The signal bdquooil level too lowldquowill now be put out when the level is approx 10 to 20 mm below the minimum markingon the dipstick

Legend Ref Nr

1 Tubing complete with 350 mm pipecoupling

421 660

Tubing complete with 450 mm pipe

coupling

421 661

Tubing complete with 550 mm pipecoupling

421 659

2 Sensor support 454 134

3 PA pipe available in meters 421 662

4 Level monitoring sensor

Oil MIN 9 - 36 V 421 595Oil MAX 9 - 36 V 421 599

5 withoutcable

withcable

Straight connector 421 672 421 67090deg connector 421 673 421 671

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2429

page 24

Accessories

Plug Connection

1 Straight taper M 27 x 1 orstraight taper bayonet 16 S

2 Gripping seal-ring NW 103 Sleeve nut for NH9-1513

A A Tapered rubber ring must

point into the sleeve nutB B Tube polyflex NW 10Part-No 421 642 M 27 x 1

Part-No 421 672 Bayonet 16 S

Plug Connection

1 Taper M 27 x 1 90deg or

2 Tape 90deg bayonet 16 S3 Gripping seal-ring NW 10

A Tapered rubber ring mustpoint into the sleeve nut

B Tube polyflex NW 10

Part-No 421 643 M 27 x 1Part-No 421 673 Bayonet 16 S

Screw-in Adapter

Outside M 22 x 15Inside M 14 x 15

Part-No 421 640

Braze-in Adapter

Inside 14ldquo NPFTPart-No 421 641

Inside M 14 x 15Part-No 421 644

Cable and Plug

Connection for Probes Approved by Classifica-tion Societies

A Cablem Part-No 421 646

B Plug connectionPart-No 421 645

Plug connection fittedwith 2 m cablePart-No 421 647

Inside M 18 x 15

Part-No 421 648

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2529

page 25

Control and Power Supply Unit 110220 V AC 1224 V DC Order No 421 650

Up to three probes can

be fed from this powersupply unit A relay 3 Amax with one normally

open and one normallyclosed contact is fittedwhich can be used for

additional control tasks A power supply unit isavailable for connection

to 220 V

The voltage for the

relay contacts must notbe taken from thepower supply unit

Housing plastic with control lamps MIN + MAX 110 x 75 x 65 _________________________________________________________________________Control Unit Best-Nr 421 651

for automatic filling and emptying of liquids This unit is designed to control two bdquominimumldquoprobes Probe 2 monitors the maximum liquid level probe 1 the minimum level An outputrelay with a change-over contact is switched automatically for external control tasks

Relays 1 and 2 are switched to conduct when the liquids falls below minimum level Whenthe liquid level reaches maximum relay circuits 1 and 2 are automatically interrupted

LED-display

bull no display liquid level above

bull maximum LED bdquomaximumldquo lights liquid Level is between maximum and minimum andis falling

bull Both LEDrsquos light liquid level is below minimum or is between minimum and maximumand is rising Contacts r1 and r2 are closed

Two bdquominimumldquo minus switching probes with built-in control function are used for this

control The self-control is only visible when both probes are immersed in liquid The signalappears for about 2 seconds when the power supply is switched onFor this period the output (contact r1 and r2) is conducting The voltage for the relay contacts

must not be taken from the power supply unit

Technical Data for Control Unit

Operating 110220 V AC or 1224 V DC Mounting position variable

Relay relay contact t 3 Amax

Temperature - 30 degC to + 75 degC

Protective system IP 54

Control Unit for filling or emptying

Housing plastic with control lamp 110 x 75 x 65 Part No 421 651

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2629

page 26

Probes operating on the capacitive principle

This probe is self-adjustable and can be used for liquids including high viscosity media and

powders

Short description

This BEDIA-Level Sensor is suitable for liquids including high viscosity media and powdersIt operates on the principle of electrical capacitance changes arising when an electrodesurrounded by air is immersed in a media This capacitance change causes an electric

circuit to oscillate thus switching the output transistor off The use of latest state-of-the-arthybrid technology allows the probe and the electronic circuitry to be enclosed in a singlesealed unit

ApplicationThe BEDIA-Level Sensor with itrsquos large temperature range and wide sensitivity adjusting

range is suitable for a wide spread of applications process control petrochemical industrytank level monitoring bottle and crate washing systems in breweries etc

Operating modes

Minimum switching Normally the sensing probe is immersed and the green LED indicates

As the level drops below the probe the green LED extinguishes

Maximum switching Normally the sensing probe is not immersed and the green LED

indicates As the level rises above the probe the green LED extinguishes

Diagram of working method

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2729

page 27

Technical data

Circuit voltage 9 - 36 V DC Short circuit and overload

protectedPower consumption normal operation typ17 mA

fault operation typ10 mATime-delay typ01 sec

OutputTransistor plus switching 300 mA (500 mA short-time) short-circuit and overload proof with integral suppression diode

Terminal

configuration

max 1 mm2 screw terminals (AWG 17) Operating

temperature range

- 20degC to + 130degC

- 20degC to + 85degCMaterial - probe envelope PA 12-Gf

(polyamide with glass fibre)- fitting V2A (DIN 14305AISI 303)

- housing cover PA6-3-T (trogamide -transparent)

- O-ring FKM (viton)

Cable length max 300 m

Mounting plane horizontal (by preference Cable gland PG 7Max switchingpoint hysteresis

sensor diameter Mass ca 250 g

Cable automotive cable FLR 3 x 075 black Temp range -50degC to + 150degCBEDIA-part-no for cut goods 422 210

Dimensional diagram

A B BEDIA part no

G 34A 16mm 422 900

frac34ldquo NPT 21mm 422 901

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2829

page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2929

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2429

page 24

Accessories

Plug Connection

1 Straight taper M 27 x 1 orstraight taper bayonet 16 S

2 Gripping seal-ring NW 103 Sleeve nut for NH9-1513

A A Tapered rubber ring must

point into the sleeve nutB B Tube polyflex NW 10Part-No 421 642 M 27 x 1

Part-No 421 672 Bayonet 16 S

Plug Connection

1 Taper M 27 x 1 90deg or

2 Tape 90deg bayonet 16 S3 Gripping seal-ring NW 10

A Tapered rubber ring mustpoint into the sleeve nut

B Tube polyflex NW 10

Part-No 421 643 M 27 x 1Part-No 421 673 Bayonet 16 S

Screw-in Adapter

Outside M 22 x 15Inside M 14 x 15

Part-No 421 640

Braze-in Adapter

Inside 14ldquo NPFTPart-No 421 641

Inside M 14 x 15Part-No 421 644

Cable and Plug

Connection for Probes Approved by Classifica-tion Societies

A Cablem Part-No 421 646

B Plug connectionPart-No 421 645

Plug connection fittedwith 2 m cablePart-No 421 647

Inside M 18 x 15

Part-No 421 648

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2529

page 25

Control and Power Supply Unit 110220 V AC 1224 V DC Order No 421 650

Up to three probes can

be fed from this powersupply unit A relay 3 Amax with one normally

open and one normallyclosed contact is fittedwhich can be used for

additional control tasks A power supply unit isavailable for connection

to 220 V

The voltage for the

relay contacts must notbe taken from thepower supply unit

Housing plastic with control lamps MIN + MAX 110 x 75 x 65 _________________________________________________________________________Control Unit Best-Nr 421 651

for automatic filling and emptying of liquids This unit is designed to control two bdquominimumldquoprobes Probe 2 monitors the maximum liquid level probe 1 the minimum level An outputrelay with a change-over contact is switched automatically for external control tasks

Relays 1 and 2 are switched to conduct when the liquids falls below minimum level Whenthe liquid level reaches maximum relay circuits 1 and 2 are automatically interrupted

LED-display

bull no display liquid level above

bull maximum LED bdquomaximumldquo lights liquid Level is between maximum and minimum andis falling

bull Both LEDrsquos light liquid level is below minimum or is between minimum and maximumand is rising Contacts r1 and r2 are closed

Two bdquominimumldquo minus switching probes with built-in control function are used for this

control The self-control is only visible when both probes are immersed in liquid The signalappears for about 2 seconds when the power supply is switched onFor this period the output (contact r1 and r2) is conducting The voltage for the relay contacts

must not be taken from the power supply unit

Technical Data for Control Unit

Operating 110220 V AC or 1224 V DC Mounting position variable

Relay relay contact t 3 Amax

Temperature - 30 degC to + 75 degC

Protective system IP 54

Control Unit for filling or emptying

Housing plastic with control lamp 110 x 75 x 65 Part No 421 651

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2629

page 26

Probes operating on the capacitive principle

This probe is self-adjustable and can be used for liquids including high viscosity media and

powders

Short description

This BEDIA-Level Sensor is suitable for liquids including high viscosity media and powdersIt operates on the principle of electrical capacitance changes arising when an electrodesurrounded by air is immersed in a media This capacitance change causes an electric

circuit to oscillate thus switching the output transistor off The use of latest state-of-the-arthybrid technology allows the probe and the electronic circuitry to be enclosed in a singlesealed unit

ApplicationThe BEDIA-Level Sensor with itrsquos large temperature range and wide sensitivity adjusting

range is suitable for a wide spread of applications process control petrochemical industrytank level monitoring bottle and crate washing systems in breweries etc

Operating modes

Minimum switching Normally the sensing probe is immersed and the green LED indicates

As the level drops below the probe the green LED extinguishes

Maximum switching Normally the sensing probe is not immersed and the green LED

indicates As the level rises above the probe the green LED extinguishes

Diagram of working method

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2729

page 27

Technical data

Circuit voltage 9 - 36 V DC Short circuit and overload

protectedPower consumption normal operation typ17 mA

fault operation typ10 mATime-delay typ01 sec

OutputTransistor plus switching 300 mA (500 mA short-time) short-circuit and overload proof with integral suppression diode

Terminal

configuration

max 1 mm2 screw terminals (AWG 17) Operating

temperature range

- 20degC to + 130degC

- 20degC to + 85degCMaterial - probe envelope PA 12-Gf

(polyamide with glass fibre)- fitting V2A (DIN 14305AISI 303)

- housing cover PA6-3-T (trogamide -transparent)

- O-ring FKM (viton)

Cable length max 300 m

Mounting plane horizontal (by preference Cable gland PG 7Max switchingpoint hysteresis

sensor diameter Mass ca 250 g

Cable automotive cable FLR 3 x 075 black Temp range -50degC to + 150degCBEDIA-part-no for cut goods 422 210

Dimensional diagram

A B BEDIA part no

G 34A 16mm 422 900

frac34ldquo NPT 21mm 422 901

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2829

page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2929

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2529

page 25

Control and Power Supply Unit 110220 V AC 1224 V DC Order No 421 650

Up to three probes can

be fed from this powersupply unit A relay 3 Amax with one normally

open and one normallyclosed contact is fittedwhich can be used for

additional control tasks A power supply unit isavailable for connection

to 220 V

The voltage for the

relay contacts must notbe taken from thepower supply unit

Housing plastic with control lamps MIN + MAX 110 x 75 x 65 _________________________________________________________________________Control Unit Best-Nr 421 651

for automatic filling and emptying of liquids This unit is designed to control two bdquominimumldquoprobes Probe 2 monitors the maximum liquid level probe 1 the minimum level An outputrelay with a change-over contact is switched automatically for external control tasks

Relays 1 and 2 are switched to conduct when the liquids falls below minimum level Whenthe liquid level reaches maximum relay circuits 1 and 2 are automatically interrupted

LED-display

bull no display liquid level above

bull maximum LED bdquomaximumldquo lights liquid Level is between maximum and minimum andis falling

bull Both LEDrsquos light liquid level is below minimum or is between minimum and maximumand is rising Contacts r1 and r2 are closed

Two bdquominimumldquo minus switching probes with built-in control function are used for this

control The self-control is only visible when both probes are immersed in liquid The signalappears for about 2 seconds when the power supply is switched onFor this period the output (contact r1 and r2) is conducting The voltage for the relay contacts

must not be taken from the power supply unit

Technical Data for Control Unit

Operating 110220 V AC or 1224 V DC Mounting position variable

Relay relay contact t 3 Amax

Temperature - 30 degC to + 75 degC

Protective system IP 54

Control Unit for filling or emptying

Housing plastic with control lamp 110 x 75 x 65 Part No 421 651

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2629

page 26

Probes operating on the capacitive principle

This probe is self-adjustable and can be used for liquids including high viscosity media and

powders

Short description

This BEDIA-Level Sensor is suitable for liquids including high viscosity media and powdersIt operates on the principle of electrical capacitance changes arising when an electrodesurrounded by air is immersed in a media This capacitance change causes an electric

circuit to oscillate thus switching the output transistor off The use of latest state-of-the-arthybrid technology allows the probe and the electronic circuitry to be enclosed in a singlesealed unit

ApplicationThe BEDIA-Level Sensor with itrsquos large temperature range and wide sensitivity adjusting

range is suitable for a wide spread of applications process control petrochemical industrytank level monitoring bottle and crate washing systems in breweries etc

Operating modes

Minimum switching Normally the sensing probe is immersed and the green LED indicates

As the level drops below the probe the green LED extinguishes

Maximum switching Normally the sensing probe is not immersed and the green LED

indicates As the level rises above the probe the green LED extinguishes

Diagram of working method

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2729

page 27

Technical data

Circuit voltage 9 - 36 V DC Short circuit and overload

protectedPower consumption normal operation typ17 mA

fault operation typ10 mATime-delay typ01 sec

OutputTransistor plus switching 300 mA (500 mA short-time) short-circuit and overload proof with integral suppression diode

Terminal

configuration

max 1 mm2 screw terminals (AWG 17) Operating

temperature range

- 20degC to + 130degC

- 20degC to + 85degCMaterial - probe envelope PA 12-Gf

(polyamide with glass fibre)- fitting V2A (DIN 14305AISI 303)

- housing cover PA6-3-T (trogamide -transparent)

- O-ring FKM (viton)

Cable length max 300 m

Mounting plane horizontal (by preference Cable gland PG 7Max switchingpoint hysteresis

sensor diameter Mass ca 250 g

Cable automotive cable FLR 3 x 075 black Temp range -50degC to + 150degCBEDIA-part-no for cut goods 422 210

Dimensional diagram

A B BEDIA part no

G 34A 16mm 422 900

frac34ldquo NPT 21mm 422 901

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2829

page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2929

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2629

page 26

Probes operating on the capacitive principle

This probe is self-adjustable and can be used for liquids including high viscosity media and

powders

Short description

This BEDIA-Level Sensor is suitable for liquids including high viscosity media and powdersIt operates on the principle of electrical capacitance changes arising when an electrodesurrounded by air is immersed in a media This capacitance change causes an electric

circuit to oscillate thus switching the output transistor off The use of latest state-of-the-arthybrid technology allows the probe and the electronic circuitry to be enclosed in a singlesealed unit

ApplicationThe BEDIA-Level Sensor with itrsquos large temperature range and wide sensitivity adjusting

range is suitable for a wide spread of applications process control petrochemical industrytank level monitoring bottle and crate washing systems in breweries etc

Operating modes

Minimum switching Normally the sensing probe is immersed and the green LED indicates

As the level drops below the probe the green LED extinguishes

Maximum switching Normally the sensing probe is not immersed and the green LED

indicates As the level rises above the probe the green LED extinguishes

Diagram of working method

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2729

page 27

Technical data

Circuit voltage 9 - 36 V DC Short circuit and overload

protectedPower consumption normal operation typ17 mA

fault operation typ10 mATime-delay typ01 sec

OutputTransistor plus switching 300 mA (500 mA short-time) short-circuit and overload proof with integral suppression diode

Terminal

configuration

max 1 mm2 screw terminals (AWG 17) Operating

temperature range

- 20degC to + 130degC

- 20degC to + 85degCMaterial - probe envelope PA 12-Gf

(polyamide with glass fibre)- fitting V2A (DIN 14305AISI 303)

- housing cover PA6-3-T (trogamide -transparent)

- O-ring FKM (viton)

Cable length max 300 m

Mounting plane horizontal (by preference Cable gland PG 7Max switchingpoint hysteresis

sensor diameter Mass ca 250 g

Cable automotive cable FLR 3 x 075 black Temp range -50degC to + 150degCBEDIA-part-no for cut goods 422 210

Dimensional diagram

A B BEDIA part no

G 34A 16mm 422 900

frac34ldquo NPT 21mm 422 901

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2829

page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2929

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2729

page 27

Technical data

Circuit voltage 9 - 36 V DC Short circuit and overload

protectedPower consumption normal operation typ17 mA

fault operation typ10 mATime-delay typ01 sec

OutputTransistor plus switching 300 mA (500 mA short-time) short-circuit and overload proof with integral suppression diode

Terminal

configuration

max 1 mm2 screw terminals (AWG 17) Operating

temperature range

- 20degC to + 130degC

- 20degC to + 85degCMaterial - probe envelope PA 12-Gf

(polyamide with glass fibre)- fitting V2A (DIN 14305AISI 303)

- housing cover PA6-3-T (trogamide -transparent)

- O-ring FKM (viton)

Cable length max 300 m

Mounting plane horizontal (by preference Cable gland PG 7Max switchingpoint hysteresis

sensor diameter Mass ca 250 g

Cable automotive cable FLR 3 x 075 black Temp range -50degC to + 150degCBEDIA-part-no for cut goods 422 210

Dimensional diagram

A B BEDIA part no

G 34A 16mm 422 900

frac34ldquo NPT 21mm 422 901

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2829

page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2929

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2829

page 28

Connection diagram

Installation

To avoid distributions caused of different installations the level sensor has to be justed ininstalled condition and with the medium controlled at a ambient and medium temperature of

approx + 23degC

1 Install the Level Sensor

2 Loosen cable gland (PG7) unscrew housing cover3 Feed the cable through these two parts Connect the cable according to the connection

diagram (the cover is now loosely attached to the cable)

4 Set the changeover switch either to minimum switching or maximum switching 1 = Minimum 2 = Maximum

5 Check that the supply voltage corresponds to the value shown on the Level Sensor and

connect power supply (red LED indicates)The sensing probe must be thoroughly cleaned The unit must be re-adjusted for different media

6 Increase the medium level so as to partly cover the sensing probe Leave onlyapproximately 2 to 3 mm clear in case of high viscosity media

7 The level sensor can be justed with a screw-driver

Maximum sensorGreen LED indicates (The sensor is not sensitive enough)

- turn the potentiometer slowly (response delay) to the right (+)until the LED extinguishes The sensor is now adjusted

Green LED does NOT indicate (The sensor is too sensitive)

- turn the potentiometer slowly (response delay) to the left (-) until the LED indicatesThen turn slowly to the right (+) until the LED extinguishes The sensor is now adjusted

Minimum sensor

Green LED does NOT indicate (The sensor is not sensitive enough)- turn the potentiometer slowly (response delay) to the right (+) until the LED indicates

The sensor is now adjusted

Green LED indicates (The sensor is too sensitive)- turn the potentiometer slowly (response delay) to the left (-) until the LED extinguishes

Then turn slowly to the right (+) until the LED indicates The sensor is now adjusted

8 Verify the adjustment as followsImmerse the probe several times in the medium until there is some deposit on the front

or top of the probe (with high viscosity media)- Maximum sensor slowly drop the medium level The green LED should indicate as

soon as the probe is no longer immersed

- Minimum sensor slowly increase the medium level The green LED should indicateas soon as the probe is fully immersed

Clean the probe if another adjustment is necessary9 Replace cover (K) and tighten the PG cable gland (PG7)

The sensor is now ready for use

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2929

7182019 BEDIA Level Monitoring

httpslidepdfcomreaderfullbedia-level-monitoring 2929