Ph Sampler Manual 010108

Burela Instrumentation Industrial pH Sampler _____________________________________________________________________________________________________________________________________________________________________________________________________________________

Page 1 Goro pH Sampler Manual.doc

Burela Manufactured Industrial pH Sampler

Goro Nickel Project



Contents

Page Introduction 3 Sampler Overview 3 Installation 3 Process connections 4 Sampler I/O 5 Operation & Control 5 Sequence Of Operation 7 Maintenance 11 Drawings 16 Recommended Spare Parts 19



Introduction The Burela Instrumentation industrial pH sampler is an on-line sampler operating on an approximate 2 minute cycle extracting a sample from the process, cooling the sample and presenting the cooled sample to a pH electrode, then washing all wetted parts with water plus a periodic weak acid wash to maintain a clean system. This sampler is suited to applications where high solution temperatures or process composition cause premature electrode failure when direct process insertion is used. The sampler will provide a low maintenance reliable and accurate indication of process pH over a wide range of process conditions and is able to be adapted to suit most applications. pH Sample Overview The ph sampler is housed in two B&R SST enclosures supported by a 50mm SST angle frame. The larger enclosure contains all the wet parts including valves, level sensors, regulators, acid pump, sample chambers and solenoid box. The smaller enclosure houses the PLC and all the electrics. All I/O and power are connected to terminals within the electrical enclosure. Potable water is connected to a pressure regulator located at the LH side of the sample enclosure. Air, acid supply and drains are all located along the bottom of the sample enclosure. All materials used in the sample enclosure have been selected to provide maximum reliability and corrosion resistance. High quality SST, polypropylene, polyethylene & polycarbonate materials have been extensively used. All manufactured parts have been designed with ease of maintenance in mind, using O-ring sealed connections where possible and hand operated connections within the main sample train. The sampler has a range of manual operations designed to assist the maintenance technician with both fault diagnostics and routine maintenance. See Routine Maintenance section. Installation The pH samplers require the following services.

• 220 – 240VAC power at 10 Amps • Potable Water ~ 200kPa • Compressed Air (Instrument Quality) ~ 600kPa • Suitable drain line approx 40mm return to process or sump • Interface to DCS or SCADA system for 4-20mA pH signal & optional

sampler fault indication and control



All electrical & signal connections are terminated within the Electrical Enclosure. Mains power required by the sampler is via a 220 – 240 VAC GPO protected by an earth leakage circuit breaker (RCD installed by customer). This GPO provides electrical isolation for the sampler. Mains power (220 – 240VAC) is terminated - AC active - Terminal 6 AC neutral - Terminal 11 Earth - Terminal 15

4Amp

240

VAC

4Amp

240

VAC

4Amp

240

VAC

4Amp

240

VAC

4Amp

240

VAC

F1 F2 F3 F4 F5

PLC 24VDC

Power

Supply

24VAC

Trans

former

E&H

level

switch

acid

pump

N N N N

11 12 13 14

E E E E

15 16 17 18

PLC − N

24VDC PS − N

24VAC T

X − N

E&h LS − N

ACID PUMP − N

240 VAC SUPPLY IN240VAC − N

IN

EARTH − IN

to R

1

to e&h ls − term 1

to 24vac tx primary

to 24vdc supply in

to plc supply in

6 7 8 9 10

Digital Input & outputs from DCS or PLC control system. Digital In 1 - Terminal 30 - Sampler RUN command Digital Out 1 - Terminal 28 - Sampler Fault Status Digital Out 2 - Terminal 29 - Read pH signal flag. Digital I/O Supply Terminal 53 - +24VDC Supply Digital I/O Common Terminal 31 - 24VCD Common Analog output from pH transmitter (4 – 20mA) Analog Out - Terminal 32 - 4 – 20 mA output + Analog Out Common Terminal 34 - 4 – 20 mA common

28 29 30 31 3432 33

B1 B2 B1 24

dc

com

pH

out

+

pH

out

com

to t

erm 3

to t

erm 4

to t

erm 5

to t

erm 5

1

to p

H t

x

to t

erm 4

8

dcs c

able

dcs c

able

dcs c

able

dcs c

able

dcs a

nalog in

dcs a

nalog in

pH

out

+out out in

to p

lc 1v1



All the sampler services are connected at the base of the wet parts enclosure.

Potable water is connected to the pressure regulator located at the lower left hand side of the enclosure. ½” NB hose secured with a worm drive hose clip or similar Vacuum Eductor drain – 3/8” tubing to 40mm drain line Sampler Drain - 3/8” tubing to 40mm drain line Instrument Air Supply - Connect to pressure regulator located at bottom right of enclosure. ¼” air line connection. Process Sampler connection as discussed below.

Process Connections: The sampler process connection will vary with customer requirements. The sample has a 3/8” polypropylene tube from its sample chamber to the sample base. Customer connection will occur here. The sample probe will usually take the form of a 20 to 25mm SST pipe of nominated length into which a polypropylene tube is inserted with suitable fitting locating the tube at either end. The SST pipe with have either a flanged or threaded adapter fitted to attach to the process vessel. It is strongly recommended that the sample probe be located at the top of the vessel to permit insertion & removal of the probe while vessel is full. The sampler is capable of lifting the sample up to 6 meters based on a SG of 1.0. Location of the probe and the sampler must be arranged so that the required lift does not exceed this distance. A drain is required to return the sample and wash water back to the process or to a returns sump as preferred by the customer. This takes the form of a 40mm PVC pipe with an open tundish arrangement at the sampler end into which the sample cone drain is directed. Do not use a close-coupled configuration for the drain as this impairs reliable draining. Sampler I/O The sampler has one binary input, two binary outputs and one analog 4 – 20mA output used for the pH signal. The binary input is used to halt the sampler PLC program from the DCS or similar by toggling a 24VDC signal. 24VDC – sample running 0VDC – sampler stopped



Binary output 1 will indicate a fault condition as detected by the PLC. This will include conditions such as- Failed to start Failed to get sample Failed to drain sample cone This is a 24VDC signal, which is rest at the start of the next cycle. Binary output 2 is the read pH signal to the DCS sample & hold module. This is a 5 second 24VDC pulse. The analog output is sourced from the E&H pH transmitter, reading the pH value. This is a 4 – 20mA isolated output. Operation & Control The sampler has a range of control and maintenance switches located next to the pH transmitter in the Electrical Enclosure. These switches are mainly used during sample maintenance. There are also 5 indicating terminals located at the top right hand side of the electrical enclosure. There functions are as follows –

• Remote / Local Switch. o Remote - Sample will run continuously when switched to Remote

providing the DCS run command (Binary In 1) is active. o Local - Sample will only respond to local switch commands and

will not post any pH readings back to the DCS. • Local Start Switch

o This will allow the sampler to do 1 cycle provided the sampler is switched to Local and the Maintenance mode is not selected.

• Pause Switch o Switching the Pause switch ON will halt the PLC program until it is

switch OFF. Used mainly for faultfinding or service functions. • Service Mode

o This switch is used to place the sample into service mode. This will only occur when the sampler is in Local and the PLC program is at the beginning of its cycle. The service mode light will illuminate when these conditions are met.

o Service mode activates the valve switches. • Manual Valve Switches

o The 8 valve, solenoid & pump switches allow manual operation of these devices when Maintenance mode is selected.

o This function allows for easy operational checks to be conducted during sample maintenance.



• Indicating Terminals

o These indicators are use to indicate sampler status and level switch operation.

o Sample Level Switch - Terminal 1- Goes active when level switch detects the presence of a sample.

o Cone Level Switch – Terminal 2 – Goes active when switch detects sample or wash water in sample cone.

o Binary 1 In – Terminal 3 – Is active whenever the 24VDC run command from the DCS present.

o Binary 1 Out – Terminal 4 – Is active whenever a fault condition is detected. Will reset when fault is cleared.

o Binary 2 Out – Terminal 5 – Goes active when the Read pH signal is sent to the DCS.

• pH Transmitter – E&H model CM42 o For operation and calibration of the pH transmitter & electrode, refer to

the supplied instruction manual for this transmitter. • E&H Level Switch model FTW325

o For operation and functions of this device refer to the supplied instruction manual.

• Bestobell Mobrey Ultrasonic Level Switch o For operation and functions of this device refer to the supplied instruction

manual. Indicating Terminals

1 2 3 4 5

sample l

s −

to p

lc 1/4

cone l

s −

to p

lc 1/6

bin

ary 1 −

to e

xt o

/p2

bin

ary 2

− t

o e

xt o

/p 3

led led led led led

to t

erm 3

8

to e

&H l

s t

erm 5

to t

erm 2

3

to t

erm 2

4

to t

erm 2

5

bin

ary 1 input p

lc1/

5



Sequence of Operation The sampler will run continuously while ever the run signal from the DCS is present (binary input 1) and the local / remote switch is in remote. This is a generic program and may need fine tuning during commissioning.

1. Drain sample vessel & cone – 5 secs • Transfer valve open • Drain valve open • Vent valve open • Level switches off

Ensure all wash water from previous cycle is drained from the sampler.

2. Prep Sample Line – 10 secs • Transfer valve closed • Drain valve closed • Vent valve closed • Air purge open

Remove any wash water from sample line ready for next sample

3. Electrode acid wash – 2 secs • Transfer valve closed • Drain valve closed • Electrode wash solenoid on • Acid pump on

Ensure all contaminants are removed from electrode. Electrodes soak in weak acid until step 10

4. Such up sample – 1st Vacuum – 15 secs

• Vacuum Eductor air on • Vacuum valve open • Drain valve closed • Transfer valve closed

If catchpot level switch activated then step to step 8 Sampler will make 2 attempts to get sample.

5. 1st Vacuum Pause

• Vacuum off – 5 secs



6. Suck up sample – 2nd attempt

• Vacuum Eductor air on • Vacuum valve open • Drain valve closed • Transfer valve closed

If catchpot level switch activated then step to step 8

7. 2nd Vacuum pause – 5 sec • Vacuum off

If sample level switch did not detect a sample the Sampler Fault is posted to the DCS (Binary Out 1)

8. Purge Sample Line – 10 secs • Transfer valve closed • Vent valve closed • Air purge open

Remove sample from sample line

9. Drain Sample Cone – 5 secs • Transfer valve closed • Vent valve open • Drain valve open

Drain sample cone of weak acid wash

10. Rinse Electrodes – 10 secs • Vent valve open • Drain valve open • Electrode wash solenoid open

Remove all acid wash residue from electrodes

11. Drain Sample Cone – 5 secs • Drain valve open • Transfer valve closed • Electrode wash solenoid closed

Allow all wash water to drain from sample cone

12. Ready for Sample – 5 secs • Vent valve open • Drain valve closed • Transfer valve closed



13. Drop Sample into Sample Cone – 15 secs

• Transfer valve open • Drain valve closed • Vent valve open • Check for sample ( sample cone level switch activated )

Check sample has activated the sample cone level switch and allow pH electrodes to stabalize. If level switch not activated – no sample alarm activated – Binary output 1.

14. Read pH – 5 secs • Transfer valve open • Vent valve open • Drain valve closed • Read pH flag on ( Binary output 2 )

Binary output 2 activated for 5 seconds to allow DCS sample and hold module to update pH valve.

15. Check Online – 1 sec • Transfer valve open • Vent valve open • Drain valve closed

16. Drain Sample Cone – 3 secs

• Drain valve open • Transfer valve open • Vent valve open

Sample is drained from sample cone

17. Rinse Sample Cone – 3 secs • Drain valve open • Transfer valve open • Vent valve open • Electrode wash valve open





19. Fail to Drain Check – 0.1 sec • Drain valve open • Transfer valve open • Vent valve open • Check sample cone level switch is off

A fail to drain alarm is activated if the sample cone level switch is still on. Binary output 1.

20. Rinse Vacuum & Electrodes – 10 secs

• Drain valve open • Transfer valve open • Vacuum valve open • Wash Water valve open

21. Rinse Catchpot & Sample Cone – 5 secs

• Drain valve closed • Transfer valve closed • Vacuum valve open for 1 sec • Wash Water valve open • Electrode wash valve open

Sample catchpot, sample cone & vacuum eductor are washed 22. pH Probe Check

• Not used for Goro samplers

23. Purge & Sample Cone Drain – 5 secs • Drain valve open • Transfer valve closed • Vent valve closed • Air purge valve open

Purge out all wash water from sampler 24. Purge Off – 5 secs

• Drain valve closed • Transfer valve closed • Vent valve open

25. Rinse Water to Sample Cone – 5 secs

• Drain valve closed • Transfer valve open • Vent valve open



26. Rinse Sample Cone – 5 secs




28. Fail to Drain Check – 1 sec

• Check sample cone level switch is off If level switch is on fail to drain alarm is activated – Binary output 1. Sequencer stops until blockage is cleared.



Maintenance: pH Sampler Wet Parts Layout Squitch Level Switch Solenoid Sample Enclosure Chamber Vacuum Generator Electrolyte Reservoir Transfer Valve Sample Cone Air Regulator Wash Water Valve Electrode Acid Wash Valve Pump Pressure Regulator Drain Valve The sample requires periodic maintenance to maintain reliable & accurate operation. The frequency and level of this maintenance may vary depending on the service the sample is attached to. The normal maintenance period is once a week where the following task should be undertaken. A hose is provided inside the wet part enclosure to enable water to be added to the acid container and wash down the wet parts in the event of spills or leaks.



To perform the sample maintenance, place the sample into Local and allow the current cycle to end. Switch to Maintenance mode to allow operation of the valve maintenance switches. Maintenance mode ON light will illuminate when sampler cycle ends.

• Clean & Buffer pH electrodes as per manufactures instructions. A 2 buffer check is recommended, appropriate to the pH range being used.

• Replenish acid container – nominal 10% Sulphuric Acid It is recommended that a drip tray or bund be installed under acid carboy; this could be drained back to tank.

• Check correct operation of acid pump, ensure pump & lines are free of air. Prime if necessary.

• Replenish KCl electrolyte reservoir and check reservoir pressure. Observe correct procedure for disconnecting and reconnecting airline to KCl reservoir. Refer to manufactures instructions for this procedure.

• Clean sample catchpot & sample cone of process residue as necessary. • Clean transfer & drain valves, check for wear, leaks and smooth operation.

Ensure that when valves are reassembled the ball is central in its housing to prevent stress and subsequent breakage of the valve spindle. Note that these valves have been fitted with SST balls and pactene seats to provide long valve life. Apply a small amount of silicone grease to the moving parts. The spring tension adjuster adjusts return action of the valve.

• Clean and apply a smear of silicone grease to the insulated part of the sample cone level probe. This prevents moisture tracking between the level probe & the earth probe.

• Check for process buildup in the vacuum generator. Clean as necessary. • Check the vent valve and line are clean. A blocked vent will prevent the

sample being dropped into the sample cone. • Check for correct operation of all other valves via the maintenance

switches. • Ensure all connections are tightened correctly with no leaks. • With sampler still in Local, switch off the Maintenance mode and press

the Local Start button. The sampler will do 1 cycle but does not post any results to the DCS. During this cycle observe operation of sampler and check all components for correct operation.

• If satisfied with the sampler operation return it to continuous operation by placing it back to Remote.



Electrical Enclosure Layout Indicating Terminals PLC – Allen Bradley 24VAC Micrologic 1100 Power Supply

Supply Fuses 24VDC Power Supply

E&H Field Connections Level Switch Control Panel Layout pH Transmitter Sampler Control Switches Valve Maint Switches



Drawings:



to t

erm 1

REVDWG NO.FSCM NO.SIZE

SHEETSCALE

Burela Instrumentation P/LGoro Nickel

pH Sampler Electrical Panel Layout

4Amp

240

VAC

4Amp

240

VAC

4Amp

240

VAC

4Amp

240

VAC

4Amp

240

VAC

F1 F2 F3 F4 F5

PLC 24VDC

Power

Supply

24VAC

Trans

former

E&H

level

switch

acid

pump

N N N N

11 12 13 14

E E E E

15 16 17 18

24vdc

relay

24vdc

relay

24vdc

relay

acid

pump

wash

water

elect

wash

4Amp

24

VAC

4Amp

24

VDC

F6 F7

24vac

supply24vdc

supply

19 20 21 22 23 24 25

Transformer

24VAC

Secondary

Primary

1 2 3 4 5

e&h

level

switch

ftw

32528 29 30 31 34 35 36 37 38 39 40 41 4232 33 43 44 45 46 47 48 49 50 51 52 53 54 55

24

ac

n

24

ac

n

24

dc

com

24

dc

com

24

dc

com

24

dc

com

24

dc

com

B1 B2 B1 24

dc

com

pH

out

+

pH

out

com

sls vnt pge xfr drn vac vac

gen

24

vdc

+

24

vdc

−

external

output

module

vdc

out0

out1

out2out3

out4

out5

out6

out7

vdc

l n e

com 1/0 1/1 1/2 1/3 com 1/4 1/5 1/6 1/7 1/8 1/9 com 1v1

A.B. Micrologic 1100

out 0 out 1 out 2 out 3 out 4 out 524vdc c

om

maint s

w

local s

w

local

start

pause

24vdc c

om

sample l

evel s

witch

B1−in

sample c

one l

eve l

sw

spare

spare

spare

24vdc c

om

pH a

nalog in

out 0 − electrode wash valve

out 1 − acid pump

out 2 − binary 1

out 3 − binary 2

out 4 − spare

out 5 − spare

out 6 − spare

out 7 − 24vdc maint supply

vdc − 24vdc+

vent v

alve

purge v

alve

transfer v

alve

drain v

alve

wash w

ater v

alve

vacuum v

alve

24vdc+

24vdc+

24vdc+

24vdc+

24vdc+

24vdc+

240vac− F1

240vac− n1

earth

sample l

s − t

o p

lc 1/4

cone l

s − t

o p

lc 1/6

binary 1 − t

o e

xt o

/p2

binary 2

− t

o e

xt o

/p 3

led led led led led

to t

erm 3

8

to e

&H l

s t

erm 5

to t

erm 2

3

to t

erm 2

4

to t

erm 2

5

24vac

240vac

to f

3

to n

3 − t

erm 12

to f

6

to t

erm 19

to 2

4vac t

ransformer

to 2

4vdc p

s −ve

to r

1 − com

to r

2 − c

om

to r

3 − c

om

to t

erm 5

to 2

4vac t

ransformer

to 2

4vdc p

s +

ve

to t

erm 3

to t

erm 4

to t

erm 5

to t

erm 5

1

to p

H t

x

to t

erm 4

8

to p

lc o

/p 0

to p

lc o

/p 0

1

to p

lv o

/p 0

2

to p

lc o

/p 0

3

to p

lc o

/p 0

5

to v

ac m

aint s

w

to m

aint ind l

ight − c

om

to t

erm 3

1

24vdc − c

om input

24vdc t

o p

H t

x

24vdc t

o p

lc o

/p’s

24vdc+ input

dcs c

able

dcs c

able

dcs c

able

dcs c

able

dcs a

nalog in

dcs a

nalog in

to s

amp l

s

to v

ent s

olenoid

to p

urge s

olenoid

to t

ransfer s

olenoid

to d

rain s

olenoid

to v

acuum s

olenoid

to v

ac g

enerator s

olenoid

vent s

olenoid − c

om

purge s

olenoid − c

om

transfer s

olenoid − c

om

drain s

olenoid − c

om

vavuum s

olenoid − c

om

vac g

enerator s

olenoid − c

om

24vdc+ t

o s

witch p

anel

24vdc+ t

o f

tw325 t

erm 6

24vdc+ t

o s

amp l

s

to s

amp l

s − c

om

4 5 6 17

1 2 15 16

7 8 9 10

cone level probe

cone level probe earth

24ovac−n term14

24vac − f4

24vdc+ term 55

switched o/p to term 2

240vac − f2240vac−n term12

earth term16

to term 21to f7

+ + − −

l n e

24VDC

power supply

WEIDMULLER

TRIDONIC ATCO

OMT75

PLC − N

24VDC P

S − N

24VAC T

X − N

E&h L

S − N

ACID

PUMP − N

TO F5TO ACID PUMP

TO F6

TO WASH WATER SOL

TO F6

TO ELECT

WASH SOL

WW S

OL − N

EW S

OL − N

TO T

ERM 4

5

r1 r2 r3

TO R

1 & R

2

TO T

ERM 5

2

240 VAC SUPPLY IN

240VAC − N

IN

EARTH − IN

nts 1 OF 1

TO P

LC E

XT 1

& A

P M

AIN

T S

W

DC C

OM

DC C

OM

DC C

OM

TO P

LC O

/P 4

& W

W M

AIN

T S

W

TO P

LC E

XT 0

& E

W M

AIN

T S

W

to R

1

to e

&h l

s − t

erm 1

to 2

4vac t

x p

rim

ary

to 2

4vdc s

upply in

to p

lc s

upply in

pH

out

+out out in

vnt

sw

pge

swxfr

swdrn

sw

vac

sw

to p

lc 1v1

to d

rain m

aint s

w

to t

ransfer m

aint s

w

to p

urge m

aint s

w

to v

ent m

aint s

w

6 7 8 9 10 26 27

56

24VDC+ t

o d

cs r

un input

to t

erm 3

4

binary 1 input p

lc1/5



30

17

4

4

4

PLC

24vdc p/s

24vac tx

E&H LS

f1

f2

f3

f4

f5

4A

240VAC 50HZ SupplyN EA

4

4

primary

secondary

4A

4A

4A

4Amotor

acid pump

r1

com

1/0

1/1

1/2

1/3

com

1/4

1/5

1/6

1/7

1/8

com

1v1

4

4

dc com24vdc

24vdc power supply

f7 4A

35 1sls

56

54

maint

remote

local

local start

pause

cls

plc inputs

5

22

plc to maint mode in local

local input command

start plc in local

pause plc in local

sample level switch

cone level switch

Binary 1 IN

spare

spare

0/0

0/1

0/2

0/3

0/4

0/5

1/0

1/1

1/2

1/3

1/4

1/5

1/6

1/7

plc outputs

plc ext outputs

44 51

23R2

39 48

40 49

42 50

46 52

vent

purge

transfer

drain

wash water

vacuum

vac gen

24R3electrode wash relay

22R1acid pump relay

28

29

spare

spare

binary 1 to dcs

binary 2 to dcs

36 47

maint sw

maint sw

maint sw

maint sw

maint sw

maint sw

24vdc maint supply

maint on

indicator

maint sw

maint sw

24vdc+ 24vdc−

point B

point A

point A

point B

5024vdc com

2

bestobel

squitch

sample level

switch

5

24vactransformer

240vac

24vacf6 4A

16

R2

R3

wash water solenoid

electrode wash solenoid

Itemref

Designed by

Edition Sheet

ScaleDateFilenameTitle/Name, designation, material, dimension etcQuantity Article No./Reference

pH sampler wiring diagram

pH sampler wiring diagram.skf 03/12/07 nts

1 of 1Goro pH samplers

General wiring diagram for pH samplers using

the micrologic 1100 plc

Valve maintenance switches located under pH transmitter

Supply to maintenance switches is via output 07 of the relay

extender module & is only activated when sampler is in local,

maint switch selected and sampler at end of it’s cycle

Maintenance light will indicate when power is on.

spare

45

43

41

38

37



Typical Interconnection Arrangement with DCS or Similar System

Sampler DCS Systemplc ext module 2

plc ext module 3

plc input 1/5

pH transmitter

iO terminals

digital input module

diguital input module

digital output module

analog input module

4/20 mAsample & hold

module

+24VDC

24vdc com

+24VDC

24vdc com

+24vdc

24vdc com

+24vdc

24vdc com

Binary output 1

binary output 2

binary input 1

analog out 4 − 20mA

28

24

29

24

56

30

33

34

pH Sampler & DCS interface connections

GORO Nickel Project

binary 1 input

sampler fault

binary 2 input

read pH signal

sampler RUN

output signal

update pH value

when read pH is ON



Recommended Spare Parts PART No Recommended

QTY DESCRIPTION

91 2 SMC valve 1/4” teflon N/O, LVA-21-02-C 93 2 SMC valve 1/4” teflon N/C, LVA-20-02-C 80 2 Valve wash water 2 Acid metering pump poppet valves KB0101 (Viton) 81 2 VALVE- Ball, True Blue 15 mm P/N ABVS-050-X-V-T-PV, normally closed, c/w

actuator & spring return kit, viton 'O' rings, threaded 1/2" B.S.P. socket connection, PVC

81B 4 Stainless steel ball to suit True Blue valve 81C 20 Pactene valve seats to suit True Blue valve (2/valve) 201 1 Pump, Iwaki metering – P/N KB3X, 240VAC 50HZ 202 2

EDUCTOR, (Ejector), Vacuum, SMC P/N ZHI3DS010202

217 1 pH Transmitter – E&H Liquidline CM42 270 1 Relay 24VDC Single pole – AB H700HK36Z244 313 1 Level probe Squitch 1" BSPT thread, probe length 27 mm, 316 st.st. body. 361 1 Regulator – Water Pressure, RMC PS50-500, R1/2, 500kpa

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Ph Sampler Manual 010108