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279
PRESSURE SENSORS AND PRESSURE SWITCHES
J Relative pressure
J Absolute pressure
J Difference pressure
J Level measurement
J Pressure switches
DS_Pressure_sensors_and_pressure_switches 05/2014
280
Our pressure sensors are high-precision, thermally stable instruments that are designed for the measurement of pressure in liquids and gases. The functionality and sensor style are determined by the specific operating conditions. Thanks to the ease at which these reliable sensors can be installed, commissioned and operated, they are suitable for use in a wide variety of applications.
The in-depth knowledge and extensive expertise of our product specialists in both the field-sales and internal-sales teams translates to top-quality sensor solutions that are perfectly tailored to your measurement task. Furthermore, we also have a global network of hand-picked representatives.
Areas of application • Mechanical engineering
• Machine tools
• Measuring / control engineering
• Hydraulics / pneumatics
• Refrigeration technology
• Food industry
• Medical technology
• Filter control
• Automation
High-precision pressure measurement with SIKA
-281-281
By constantly examining technologies that can be applied to pressure measurement, we are committed to the continued refinement and development of our products.
Over the following pages you can get an insight into our extensive sensor portfolio, ranging from vacuum and pressure switches for liquids and gases, OEM pressure sensors for relative pressure measurement, sensors with a ceramic element for gauge pressure and differential pressure measurement, or piezoresistive solutions for absolute pressure, differential pressure or level measurement. Added to this, a wide range of bespoke special versions are also in use the world over.
282
Series DSW
Advantages
• Easy installation and commissioning
• Excellent value for money
• Short delivery times
• Linearity < 0.5 % of full scale value
• 2-fold overpressure-safe
Type DSW
Functional description
With this new pressure sensor, SIKA is ushering in a new generation of pressure measuring instruments for general industrial applications.
The DSW not only impresses users with its compact design, it also offers excellent quality at a very low price.
And with a range of international approvals, the DSW can be used worldwide. The various pressure ranges and process connections that are needed for the individual operating conditions are readily available.
Areas of application
• Mechanical engineering
• Machine tools
• Measuring / control engineering
• Hydraulics / pneumatics
• Pumps / compressors
Relative pressure
283
Technical data and dimensions
Technical data
General
Accuracy, linearity, hysteresis < ±0.5 % full scale
Temperature influence ≤ 1.0 % typ., ≤ 2.5 % max.
Response time < 4 msec
Medium temperature 0...80 °C (others on request)
Ambient temperature 0...80 °C (others on request)
Overpressure safety 2-fold full scale value
Fitting position Any
Connection G¼ A, ¼ NPT
Degree of protection IP65
Electrical data
Output / supply 4...20 mA, 8...30 VDC; 2-wire
Connection Angle plug DIN EN 175301-803 A
Load 2-wire: ≤ (Ub-8 V) / 0.02 A
Material
Housing Stainless steel 1.4404
Diaphragm NBR (nitrile butadiene)
Connection Stainless steel 1.4404
≈48
≈6114
SW27
∅28,5
G¼A
284
Order code
Order example DSW 43 1 H 1H 025Diaphragm
NBR (nitrile butadiene) 43Output
4...20 mAOthers
1X
SealingBack sealed H
Process connectionG¼ A¼ NPT
1H2H
Measuring range [bar]0...10...1.60...2.50...40...6
025035045055065
0...100...160...250...400...60
075085095105115
0...1000...1600...2500...4000...600
125135145155165
Other specifications on request
285
Advantages
• Good value
• Linearity < 0.5 % of full scale value
• 2-fold overpressure-safe
• High temperature resistance
• No mechanical ageing or creepage
• No filling liquid necessary
Type DSK
Functional description
A new type of ceramic sensor forms the core of these units.
It consists of a thin aluminium oxide diaphragm, on the rear side of which thick-film resistors are fitted in a Wheatstone bridge circuit.
For stabilisation purpose, this diaphragm is connected to a thickaluminium oxide baseplate and is mounted in an appropriate casing with threated connections.
If the diaphragm is subjected to pressure, it bends slightly and therby changing the resistance of the thick-film resistors.
A downstream electronic converts the resistance into an analog signal.
Areas of application
• Refrigeration technology
• Mechanical engineering
• Process engineering
• Hydraulics
Series DSK
286
Technical data
General
Accuracy, linearity, hysteresis < ±0.3 % full scale
Temperature influence < ±0.04 % full scale/K
Response time < 5 ms
Medium temperature -15...80 °C
Ambient temperature -15...80 °C
Overpressure safety 2-fold full scale value
Fitting position Any
Connection G¼ A, G½ A
Degree of protection IP65
Electrical data
Output / supply 4...20 mA, 11...33 VDC; 2-wire 0...5 V, 11...33 VDC; 3-wire0...10 V, 18...33 VDC; 3-wire
Connection Spark plug, DIN EN 175301-803 A
Load 2-wire: < (Ub-11 V) / 0.02 A 3-wire: > 10 kΩ / < 100 nF
Material
Housing Aluminium, anodised
Diaphragm FPM, NBR or EPDM
Connection Stainless steel 1.4305
Technical data and dimensions
to 40 bar to 60 bar
G G¼ A G½ A G¼ A G½ A
l 16 20 12 16
s 3 5 10≥100 bar = 69≤60 bar = 59
Ø 4
0
G
10
SW27
l
s
≥ 100 bar ~ 140 (mounted)≤ 60 bar ~ 94 (mounted)
287
Order code
* Only possible with Viton seal
Order example DSK 33 0 A 1H 315 ÖFDiaphragm
FKM (fluro-elastomer)NBR (nitrile butadiene)EPDM (ethylene butadiene)
334353
Output4...20 mA0...10 V0...5 V
123
SealingFront sealedBack sealed
AH
Process connectionG¼ AG½ A
1H3H
Measuring range [bar]-1...0-1...0.6-1...1.5-1...3-1...5
315505515525535
-1...90...0.30...0.60...10...1.6
545005015025035
0...2.50...40...60...100...16
045055065075085
0...250...400...600...1000...160
095105115125135
0...2500...400*0...600
145155165
OptionsOil and grease-free ÖF
288
Series DSA / DSP
Advantages
• High linearity < 0.5 % (0.25 %) of full scale value
• Good reproducibility
• Inside, front or front-flush diaphragm
• 3-fold overpressure-safe (max. bursting pressure)
• Robust design
Relative and absolute pressure
Type DSA
Functional description
Series DSA / DSP pressure sensors are used to measure relative pressure, overpressure or absolute pressure.
High-quality stainless steel and front-flush diaphragm also allow these sensors to be used in viscous or contaminated media.
The measuring element is a silicon chip, out of which a diaphragm has been etched. A Wheatstone bridge circuit is formed by the apllication of foreign ions to the silicon diaphragm.When the diaphragm bends, a resistance change results which is a measurement of the pressure. If the rear side of the chip is prestressed with a reference vaccum, absolute pressure can also be measured.
Since silicon chips are very sensitive, the entire chip is enclosed in a measurering element chamber. This is for reasons of media compatibility. The chamber is separated from the medium by a stainless steel diaphragm. The pressure is transmitted with neutral oil.
Areas of application
• Mechanical engineering
• Hydraulics
• Medical technology
289
Technical data
General
Accuracy, linearity, hysteresis ≤ ±0.25 % full scale
Temperature influence
0...70 °C (typical / max.)> 0.1...0.5 bar> 0.5...2 bar> 2...100 bar> 100...600 bar
≤ 1.0 % / 1.5 % full scale≤ 0.7 % / 1.0 % full scale≤ 0.7 % / 1.0 % full scale≤ 0.7 % / 1.0 % full scale
-25...100 °C (typical / max.)> 0.1...0.5 bar> 0.5...2 bar> 2...100 bar> 100...600 bar
≤ 2.0 % / 2.5 % full scale≤ 1.0 % / 1.5 % full scale≤ 1.0 % / 1.5 % full scale≤ 1.0 % / 1.5 % full scale
Response time < 1 ms / 10...90 % full scale
Medium temperature 0...70 °C-25...100 °C
Ambient temperature -40...100 °C
Overpressure safety 3-fold (min. 3 bar, max. burst pressure)
Connection G¼ A, G½ A, DIN and flange
Degree of protection IP65
Electrical data
Output / supply 4...20 mA, 11...33 VDC; 2-wire0...5 V, 15...33 VDC; 3-wire0...10 V, 15...33 VDC; 3-wire
Connection Angle plug, DIN EN 175301-803 A
Load 2-wire: (Ub-9 V) / 0.02 A3-wire: > 10 kΩ
Material
Housing Stainless steel 1.4435
Diaphragm FKM (Fluro-elastomer)
Connection Stainless steel 1.4435
Type DSA / DSP...A1H Type DSA / DSP...A3H
Technical data and dimensions
13,5
12
32,5
Ø27
Ø19
Ø24
Ø24
G 1
/2G
1/4
25
32,5 25
SW27
SW27
13,5
12
32,5
Ø27
Ø19
Ø24
Ø24
G 1
/2G
1/4
25
32,5 25
SW27
SW27
290
Order code
Order example DSA 24 1 A 1H 126Accuracy
0.25 % 24Output
4...20 mA0...10 V0...5 V
123
DiaphragmInsideFront (only G½ A possible)
AV
Process connectionG¼ AG½ A
1H3H
Measuring range [bar]0...0.10...0.160...0.250...0.40...0.6
126136146156015
0...10...1.60...2.50...40...6
025035045055065
0...100...16
075085
291
Order code
* nur mit G½ A möglich
Order example DSP 34 1 A 1H 126Accuracy
0.25 % 34Output
4...20 mA0...10 V0...5 V
123
DiaphragmInsideFront
AV
Process connectionG¼ AG½ A
1H3H
Measuring range [bar]0...0.10...0.160...0.250...0.40...0.6
126136146156015
0...10...1.60...2.50...40...6
025035045055065
0...100...160...250...400...60
075085095105115
0...1000...1600...2500...4000...600
125135145155165
292
Series DDS
Advantages
• Good value
• Linearity < 0.5 % of full scale value
• High temperature resistance
• No mechanical ageing
• Very low temperature sensitivity
• Protected against polarity change and short-circuit strength
• One-sided overload max. 2-folded pressure range
Difference pressure
Type DDS
Functional description
The structure of the difference pressure transmitter, series DDS, is based upon a new ceramic technology and is remarkable of a high temperature resistance and a special longterm stability.The thick-film resistors on the ceramic diaphragm form a Wheatstone bridge circuit.
The bridge circuit amplifier supplies the calibrated voltage or current signal as a standard signal.
The output signal is protected against polarity change and shortcircuit strength.
Areas of application
• Gaseous and liquid medium
• Heating technique
• Filter control
• Process engineering
293
Technical data
General
Accuracy, linearity, hysteresis < 0.5 % full scale
Temperature influence < 0.06 % full scale
Response time < 5 msec
Medium temperature -15...80 °C
Overpressure safety Max. 2-folded pressure range
Connection NozzleScrewed pipe joint
Degree of protection IP65With cable socket IP67
Static pressure Max. 25 bar
Electrical data
Output / supply 4...20 mA, 11...33 VDC; 2-wire0...10 V, 18...33 VDC; 3-wire0...5 V, 11...33 VDC; 3-wire
Connection Angle plug, DIN EN 175301-803 APlug DIN EN 60130-91.5 m cable with PG screwing
Load 2-wire: (Ub-11 V) / 0.02 A3-wire: >10 kΩ
Material
Housing Stainless steel 1.4305
Diaphragm FPM, EPDM, NBR, MVQ, CR
Connection Stainless steel 1.4305
Technical data and dimensions
SteckdoseDIN EN 175301-803-A
Stai
nles
s st
eel ~
136
/ PVD
F ~1
30 (m
ount
ed)
294
Order code
Order example DDS 33 1 H1 1 100Sealing material
FPM (fluro-elastomer)EPDM (ethylene butadiene)MVQ (silicone polymer)NBR (nitrile butadiene)CR (chloropren-butadiene)
3353634373
Output4...20 mA0...10 V0...5 V
2-wire3-wire3-wire
123
Process connectionTube connectionScrewed pipe joint
CuZn, 6 mm1.4305, 6 mm1.4305, 8 mm
H1H3H4
Electr. connectionAngle plug, DIN EN 175301-803 ACable 1.5 m with PG screwingPlug DIN EN 60130-9
123
Measuring range [bar]0...0.10...0.20...0.250...0.30...0.4
110120125130140
0...0.50...0.60...10...1.60...2.5
150160200216225
0...40...60...100...160...25
240260300316325
295
Series DSN / DSL
Advantages
• Linearity < 0.5 % (0.25 %) of full scale value
• 3-fold overpressure-safe
• Mechanically protected diaphragm
• 100 % leak-proof by virtue of being
• Fully welded
Level measurement
Type DSN
Functional description
Series DSN / DSL pressure sensors are mainly used to measure liquid filling levels.
The measuring element is a silicon chip, out of wich a diaphragm has been etched. A Wheatsone bridge circuit is formed by application of foreign ions to the silicon diaphragm.
When the diaphragm bends, a resistance change results which is a measurement of the pressure. In the level probe design the rear side of the diaphragm is connected to the surrounding air pressure by a compensating line.
The units can also be used in troubled media.
Areas of application
• Wells
• Open containers
• Bodies of water
296
Technical data and dimensions
Technical data
General
Accuracy, linearity ≤ ±0.25 % full scale
Temperature influence
-5...50 °C (typical / max.)> 1...5 bar> 5...20 bar
≤ 1 % / 1.5 % full scale≤ 0,7 % / 1 % full scale
-5...80 °C (typical / max.)> 1...5 bar> 5...20 bar
≤ 2 % / 2.5 % full scale≤ 1 % / 1.5 % full scale
Response time < 1 msec / 10...90 % full scale
Medium temperature -5...50 °C (-5...80 °C on request)
Overpressure safety 3-fold full scale value (min. 3 bar)
Degree of protection IP68
Electrical data
Output / supply 4...20 mA, 9...33 VDC; 2-wire0...5 V, 12...30 VDC; 3-wire0...10 V, 12...30 VDC; 3-wire0...20 mA, 18...33 VDC; 3-wire
Connection Cable with air pressure compensating tube
Load 2-wire: < (Ub-11V) / 0,02 A 3-wire: < 250 Ω
Material
Housing Stainless steel 1.4404
Diaphragm Viton (Standard), EPDM
Cabel PUR, FEP* or PE*
* On request
Ø6 P
E-/PU
R cable
Ø5 Teflon cable
DSN - without ballast weight 88DSL - with ballast weight 175
A [mm]
297
Order code
Order example DS N 23 000K 126 010Construction
ShortLong
NL
Accuracy0.25 % 24
Output4...20 mA0...10 V0...5 V
100K200K300K
Measuring range [bar]0...0.10...0.160...0.250...0.40...0.6
126136146156015
0...10...1.60...2.50...40...6
025035045055065
0...100...16
075085
Cable length [m]P. e. 10 m cable PUR XXX
298
Series DSU / DSV
Advantages
• Pressure range 2...6000 mbar
• Reproducibility 5 %
• Temperature range -40...80 °C
• High operation safety because of robust mechanics
• Switching difference adjustable
• Changeable as contact
• Maximum overpressure 1.5-fold operating pressure
Vacuum and pressure switches for liquids and gases
Type DSU 620
Type DSV 625
Functional description
Series DSU / DSV vacuum and pressure switches are used for surveilllance of liquids and gas in industrial applications.
The robust mechanics guarantees a highly operation safety, even in case of vibrations.
The units posses a highly long-term stability of the adjusted switch points.
They are especially remarkable of a standard program with many different versions and an ideal cost effectiveness.
Areas of application
• Process engineering
• Automation
• Heating, climate, ventilation
299
Technical data
General
Smallest cutting-in pressure 2 mbar
Smallest switching difference 1 mbar
ReproducibilityDiaphragm NBR or siliconDiaphragm FPM and EPDM
5 %10 %
Medium temperatureDiaphragm NBRDiaphragm FPM und EPDMDiaphragm silicon
0...80 °C-10...80 °C-40...80 °C
Connection Nozzle 6 mm or female thread M5Thread: G⅛ A, G¼ A, M12 x 1
Degree of protection IP54 with covering hoodIP00 without covering hood
General technical data
Connections AMP plug 6.3 mm
Contact system Switch 250 DAC 1 A or 6 A
Cable screw Screwing PG 9
Technical data and dimensions
Type DSU 620 Type DSU 625 Type DSV 625
300
Order code
Order example DSU 620 1 1H 008
Diaphragm
NBRFPMEPDMMVQ
nitrile butadienefluro-elastomerethylene butadienesilicone polymer
1234
Connection
TubeFemale thread
1H2H
Measuring range Max. operation pressure Contact rating 250 V
2...8 mbar6...75 mbar12...80 mbar12...200 mbar25...220 mbar
50 mbar500 mbar500 mbar500 mbar500 mbar
1 A1 A6 A1 A6 A
008075080200220
Accessories
Covering hood made of plastic DSU 620625000
Order example DSU 625 1 1H 008
Diaphragm
NBRFPMEPDMMVQ
nitrile butadienefluro-elastomerethylene butadienesilicone polymer
1234
Connection
G⅛ AM12 x 1G¼ AG¼ A
AluminiumAluminiumAluminiumBrass
1H2H3H4H
Measuring range pressure Max. operation pressure Contact rating 250 V
2...8 mbar6...75 mbar12...80 mbar12...200 mbar25...220 mbar80...2000 mbar120...2200 mbar1000...6000 mbar
50 mbar500 mbar500 mbar500 mbar500 mbar10000 mbar10000 mbar10000 mbar
1 A1 A6 A1 A6 A1 A6 A6 A
008075080200220020022060
Accessories
Covering hood made of plastic DSU 620625000
301
Order example DSV 625 1 1H 030
Membran
NBRFPMEPDMMVQ
nitrile butadienefluro-elastomerethylene butadienesilicone polymer
1234
Connection
G⅛ AM12 x 1G¼ AG¼ A
AluminiumAluminiumAluminiumBrass
1H2H3H4H
Measuring range vacuum Max. operation pressure Contact rating 250 V
-4...-30 mbar-15...-80 mbar-30...-150 mbar-50...-600 mbar-100...-900 mbar
100 mbar500 mbar500 mbar10000 mbar10000 mbar
1 A6 A6 A6 A6 A
030080150600900
Accessories
Covering hood made of plastic DSU 620625000