2-wire transmitter for pH and Redox (ORP)Model PH202G (S)

GS 12B6C3-E-H4th Edition

Flexibility, low maintenance and low installation costs areamong the benefits of the EXA PH202 pH transmitter. Designedto meet the exacting requirements of measuring pH and ORP inthe modern industrial environment, it contains many features toensure peak precision whatever the application.

This 2-wire (loop powered) transmitter is housed in a robust IP65field mountable case. The need for expensive cabling isminimised, and an IS version is available for hazardous area duty.

The famous EXA sensor diagnostics are enhanced by animproved impedance check, and the addition of a logbookfeature. Calibration history is available in the display, and fulllogbook data is accessible through the HART bi-directionalcommunication link, and is used to store important configuration,calibration and diagnostic data. Prediction of sensor failure ispossible by reference to the logbook.

Microprocessor-aided calibration uses internal buffer tables andstability checking to ensure maximum accuracy with minimumeffort. Process temperature compensation enhances accuracy inapplications where the influence of temperature is seen inprocess pH changes. pH and ORP or rH measurements can bemade simultaneously when an appropriate sensor combination isused.

FEATURES Universal pH/ORP, dual high impedance inputs On-line sensor checking HART communications interface Event logbook in software Process temperature compensation Differential input amplifier with equipotential screening Freely configurable ITP, slope and assymmetry Easy to use EXA control panel Password protection for all levels of software Intrinsically safe version - <Ex> II 2(1)G EEx ib[ia] IIC T4/T6

GeneralSpecifications

SYSTEM CONFIGURATION

Sensors Cables Fittings Transmitters AccessoriesTransmitters

AccessoriesBuffer powder packs to NIST (NBS) standard. Each box containsfive (5) packets, sufficient to make 200 ml of calibration solutionwhen dissolved in distilled water.

Part No pH value Reference temperature6C232 4.01 25 oC6C236 9.18 25 oC6C237 6.87 25 oC

Dual amplifier systemThe input amplifiers both have a very high input impedance (≥ 1013 Ω). This means the PH202 is capable of accepting glass,enamel and metal measuring and reference sensors. Togetherwith the ability to configure the ITP (isothermal point), the systemcan be adapted to accept almost all sensor types.

PROCESS TEMPERATURE COMPENSATION

The figure below shows the strong change in pH withtemperature, caused by the dissociation constant of waterchanging. This effectively shifts the neutral point from pH 7. Inorder to reliably control the pH of solutions it is necessary tocompensate for the changes. The EXA transmitters have asimple-to-operate system of process temperature compensationto provide optimum accuracy and best control. An applicationwhere this is particularly important is in the measurement ofalkalized boiler feed water.

pH as a function of temperature

pH at process

10ºC25ºC40ºC80ºC

temp.15

13

11

9

7

5

pH at reference temperature

5 6 7 8 9 10 11 12 13 14

pH 11.00 at 25ºC

becomes 9.80 pH at 80ºC

2

GS 12B6C3-E-H

ACCURATE pH MEASUREMENT

Electrode selectionIn order to make precise pH measurements, there are a numberof pre-requisites. Special attention should be paid to the choiceof the sensors to ensure compatibility with the chemicalcomposition of the process fluid. The speed of responserequired, the solids content and the flow rate of the fluid are alsocontributory factors. Other Yokogawa specification sheets coverthe choice of sensors. Any Yokogawa sales office can provideexpert advice.

Converter designThe system should be designed to minimize the effect of externalinfluences. The EXA series features dual high impedance inputamplifiers in a differential configuration with liquid earth. Thissystem is used to ensure compatibility with most available sensorcombinations. It also provides excellent noise rejection,minimizing the stray signals that can affect industrial pHmeasurements. Earth loop currents in damp and damagedcabling are eliminated by the equipotential screening. EXAinstruments offer a simple and effective process temperaturecompensation in addition to the usual compensation to theNernst equation.

MaintenanceIt is important that the system be well maintained. The electrodesmust be properly cleaned and regularly calibrated. Yokogawa on-line cleaning systems may be used where there is significantfouling of the sensors. Other influences from the electrodeholders can be less obvious, but important none the less. Welldesigned fittings make it easy to provide the routine maintenanceneeded for best accuracy. Flow through, retractable andimmersion assemblies are available.

The selection of the buffer solutions is important to ensure thebest possible calibration. Yokogawa strongly recommends theuse of NIST (NBS) buffers. These are chosen as primary bufferstandards because of the maximum buffer capacity exhibited bythese solutions. Commercial buffers (adjusted with NaOH) havethe limited advantage of an integer value, with the disadvantagesof loss of buffer capacity and greater temperature dependence.Yokogawa sets the pH/temperature relationships for NIST buffersin the software of the EXA pH converters. This combinationprovides the best calibration possible.

3

GS 12B6C3-E-H

SENSOR CHECKING

On-line checks Real-time sensor checking in the 2 wire transmitter is one of themost important features of the EXA PH202 transmitter.

By special circuitry on the input board an alternating voltage isapplied to the liquid earth pin and the sensors. The impedanceof the measuring electrode (pH-glass or ORP-metal electrode)and reference electrode are independently measured. Themeasured values are compared to limiting values.

Sensor Checking

Faults The pH-sensor is checked for low impedance to detect breakageof the bulb and for high impedance to detect an open circuit.

The Redox sensor is checked for high impedance to detect anopen circuit.

The reference electrode is also checked for high impedance todetect fouling of the diaphragm, poisoning of the reference liquidor non immersion of the sensors.

These faults can be transmitted to the control room or remotepanel by a discrete current output of 22 mA or 3.9 mA over the2-wire connection. (Overrange mA-output signal is limited at 20.5 mA).

The fault is also flagged on the display by a special marker fieldand an error code in the message display.

Off-line checks During calibration of a pH measuring system, the response of thesensors is measured and checked. Sensitivity and drift arecalculated and checked. During calibration of an ORP measuringsystem, the drift of the sensors is calculated and checked. If anyof these are outside the limits, an error is signaled.

The comprehensive combination of on-line and off-line checkingmonitors all key aspects of the measurement to give an earlywarning, if the reading is faulty.

THREE LEVEL OPERATION

The EXA PH202 transmitter uses a 3-level operating system totake full advantage of the microprocessor while retaining thetraditional simplicity of a 2-wire transmitter. Advanced functionsare separated from conventional operation to avoid confusion.They can be activated as required for each individual application.

1. The normal maintenance functions are accessible through theflexible window by pushing the keys underneath.

2. Functions required to commission the instrument are hiddento discourage unauthorized tampering. The front cover isremoved to reveal the commissioning menu and the hiddenaccess key (marked ).

3. Specialized functions can be adjusted via the SERVICEmenu. In this case access is by using “service codes”.

Three level operation

MAINTENANCE level :Use : Normal operation and checkingHow : Simple operation by dialog through

the closed front coverExample : Calibration with buffers

COMMISSIONING level :Use : For normal commissioningHow : Removal of the front cover reveals the

access key and second menuExample : Selecting a measuring range

SERVICE level :Use : Only for specialist functionsHow : Through special coded entriesExample : Process temperature compensation

With this 3-level user-friendly approach, the instrument can beoperated by anyone. Commissioning is straight-forward andneeds no calibration equipment compared to analog instruments.Specialist functions available via access codes are invisible duringnormal operation. All three levels can be separately protectedagainst unauthorized access by a password system using a threedigit code.

SET HOLDSERVICE

*OUTPUTSET HOLD

MEASURE

MAN.CALDISPLAY

HOLDTEMPERATURE

AUT.CAL

COMMISSIONING

SERVICESERVICE

*

MAINTENANCE

NO MODEYES

ENT>

HOLD TEMP.MAN. F AIL

YES NO

ENT

MEASURE

MAN.CALDISPLA Y

HOLD

YYOOKKOOGGAAWWAA

MODE

TEMP.

AUT.CAL OUTPUT

pH

mV

SERVICE>

YOKOGAWAMade in the Netherlands

YOKOGAWA

MΩ kΩ

BREAKAGE

NON-IMMERSION

FOULING

Model Suffix Option Descriptioncode code

PH202G ....................................... .. pH/ORP transmitterS..... ..................................... Intrinsically safe

..................................... pH/ORP transmitter-E ............................ .... ATEX certified-U ........................... ..... FM certified-C ................................. CSA certified-N ................................. Non-Incendive version

-E ..................... ........ English instruction manual*Options /H ......... Hood for sun protection

/U ......... Pipe and wall mounting .............. hardware/Q ......... Quality certificate/SCT...... Stainless steel tag

J. Power supply : Nominal 24 volt DC loop poweredsystem.

- PH202G : 17 to 40 volts dependant on load.- PH202S : 17 to 31.5 volts dependent on load.

NOTE:The transmitter contains a switched power supply, drawingits energy from the 0-4 mA section of the signal,Consequently the 17 volt limit is applied at 4 mA. Thecharacteristic of the unit is such that above about 7 mA onthe output, supply voltage can drop to 13.5 volts withoutproblem.

K. Input isolation : 1000 V DC

GENERAL SPECIFICATIONS

A. Input specifications : Dual high impedance inputs (2 x1013Ω) with provision for liquid earthconnection. Suitable for inputs fromglass or enamel pH & referencesensors and ORP metal electrodes.

B. Input ranges- pH : -2 to 16 pH - ORP : -1500 to 1500 mV- rH : 0 to 55 rH- Temperature : -30 to 140 0C (-20 to 300 ºF)

for 8k55 sensor -10 to 120 ºC (10 to 250 ºF)for 10k NTC sensor -20 to 140 ºC(0 to 300 ºF)

C. Span- pH : min 1 max 20 pH

ORP : min 100 max 2000 mVrH : min 2 max 55 rH

D. Output signals : 4-20 mA loop powered, isolatedfrom input, maximum load 475 Ω at24 V DC. With the possibility of 22 mA “FAIL” signal (burn up)and 3.9 mA (burn down).

E. Temperature compensation- Range : Automatic or manual compensation

to Nernst equation. Process compensation byconfigurable coefficient.Compensation range -30 to 140 ˚C.Adjustable ITP (Iso-thermal point ofintersection).

F. Calibration : Semi-automatic using preconfiguredNIST buffer tables 4, 7 & 9, of withuser defined buffer tables, withautomatic stability check.Manual adjustment to grab sample.Slope and Asymmetry Potentialsetting.Zero point can be selected forcalibration and display instead or As.Pot. (IEC746-2)

G. Serial communication: Bi-directional HART digital

communication superimposed on the4-20 mA signal.

H. Logbook : Software record of important eventsand diagnostic data. Availablethrough HART link, with keydiagnostic information available in thedisplay.

I. Display : Custom liquid crystal display, with amain display of 31/2 digits 12.5 mmhigh.Message display of 6 alphanumericcharacters, 7 mm high.Warning flags and units (pH and mV).

4

GS 12B6C3-E-H

* For other languages, please contact your local sales office

MODEL AND SUFFIX CODES

Single electrodes

CONNECTION DIAGRAM FOR SENSORS

Red

ref pH/ORPtemp.

Green Yellow

Color code

rd bl

rdblbkwt

====

redblueblackwhite

11 12 14 17 13 15 16HIGH IMPLOW IMP

HART SUPPLY TEMP LE INPUT 2 INPUT 1

rd bl

bk

bl rd

K. Operation protection: 3-digit programmable password.

L. Sensor impedance checking: Independent impedance check on

measuring and reference sensorelements, with temperaturecompensation. Display of sensorimpedance on message line of display.FAIL flag in event of “out of limits”impedance, and the possibility of 22mA or 3.9 mA error signal

M.Intrinsic safety (PH202S only)ATEX : EEx ib[ia] IIC T4 for ambient temp.<55˚C

EEx ib[ia] IIC T6 for ambient temp.<40˚C

CSA : Ex ia Class I, Division 1, Group C&D,T3C

FM : Class I, Division 1,Group ABCD T3B forambient temp. < 55°C T4 for ambienttemp. < 40°C

N. Non-Incendive FM : Class l, Division 2, Group ABCD T4 for

ambient temp. < 55°C T6 for ambienttemp. < 40°C

ATEX : EEx nA[L] IIC T4 for ambient temp.<55˚C EEx nA[L] IIC T6 for ambienttemp.< 40˚C

O. Regulatory complianceEMC : meets council directive

89/336/EECEmission : meets EN 55022 Class AImmunity : meets EN 50082-2ATEX : meets directive 94/9/EC

P. HART DD specification: The PH202 Device Description is

available, enabling communicationwith the Handheld communicator andcompatible devices

5

GS 12B6C3-E-H

OPERATING SPECIFICATIONS

A. Performance : pH- Linearity : ≤0.01 pH ± 0.02 mA - Repeatability : <0.01 pH ± 0.02 mA- Accuracy : ≤0.01 pH ± 0.02 mAPerformance : ORP- Linearity : ≤1 mV ± 0.02 mA - Repeatability : <1 mV ± 0.02 mA- Accuracy : ≤1 mV ± 0.02 mAPerformance : Temperature with Pt1000 Ω,

3 kΩ Balco, 5 k1Ω, 8k55Ω, 350Ω,6k8Ω and NTC 10kΩ

- Linearity : ≤0.3 ˚C ± 0.02 mA - Repeatability : <0.1 ˚C ± 0.02 mA- Accuracy : ≤0.3 ˚C ± 0.02 mAPerformance : Temperature with Pt100 Ω- Linearity : ≤0.4 ˚C ± 0.02 mA - Repeatability : <0.1 ˚C ± 0.02 mA- Accuracy : ≤0.4 ˚C ± 0.02 mA

B. Ambient operating temperature: -10 to + 55 ˚C (10 to 131 ˚F)

Excursions to -30 ˚C do not influencethe current output function, andexcursions to +70 ˚C are acceptabletoo.

C. Storage temperature: -30 to +70 ˚C (-20 to 160 ˚F)

D. Humidity : 10 to 90% RH

E. HART® specification- Min. cable diameter : 0.51 m, 24 AWG- Max. cable length : 1500 m

Refer to standard HART specifications for more detail.See www.hartcomm.org

F. Housing : Cast aluminum case with chemicallyresistant coating, cover with flexiblepolycarbonate window. Case color isoff-white and cover is moss green.Cable entry is via two 1/2” polyamide

glands. Cable terminals are providedfor up to 2.5 mm2 finished wires.Weather resistant to IP65 and NEMA4X standards. Pipe wall or panelmounting, using optional hardware.

G. Shipping details : Package size w x h x d 290 x 225 x 170 mm. 11.5 x 8.9 x 6.7 in.Packed weight approximately 2.5 kg(5lb).

H. Data protection : EEPROM for configuration andlogbook, and lithium cell for clock.

I. Watchdog timer : Checks microprocessor

J. Automatic safeguard : Return to measuring mode when no

keystroke is made for 10 min.

KEMA 00 ATEX 1115X<Ex> ll 3 G

LR 96123-6

FMRC J.I. 473A7.AX

FMRC J.I.5D4A9.AX

KEMA 00 ATEX 1068X<Ex> ll 2(1) G

6

GS 12B6C3-E-H

CABLES AND TERMINALS

The PH202 is equipped with terminals suitable for the connectionof finished cables in the size range: 0.13 to 2.5 mm (26 to 14AWG). The glands will form a tight seal on cables with an outsidediameter in the range of 7 to 12 mm (9/32 to 15/32 inches).

Signal processing (pH/ORP/rH)With the correct sensor configuration, the PH202 can measurepH, ORP and rH. (ORP is the oxidation reduction potential,including the effect of pH. The rH value is ORP compensated forthe effect of pH). Combinations of pH and ORP or pH and rH canbe displayed simultaneously.

Communication and logbookThe PH202 is equipped with HART communication capabilitysuperimposed on the output signal. Through this HART interfaceand PC202 software, users can read data from the instrumentand reconfigure the instrument remotely from a personalcomputer, or hand held communicator.In combination with 2-way communication, the PH202 andPC202 offer a Logbook feature. This is a software record ofevents, calibrations and alarms. A total of approximately 100event can be stored in the Logbook. Important diagnosticinformation can also be read on the LCD or the personalcomputer display via PC202.

Sensor cablegland

Power/Outputcable gland

Grounding terminal

7

GS 12B6C3-E-H

ATEX CLASSIFICATION

The PH202 is connected as a conventional 2-wire transmitter,using a 24 Volt DC supply. Depending on load requirements thismay be up to 40 Volts (31.5 Volts for the PH202S IS version).The supply voltage/load diagram shows the dependency.When using the IS version (PH202S) the power supply must bevia a certified power supply, isolating unit or barrier, conformingto one of the following safety descriptions:1. Maximum voltage out 31.5 V DC

Maximum current out 54.6 mA2. Maximum voltage out 31.5 V DC

Maximum power out 1.169 Watts3. Maximum voltage out 31.5 V DC

Internal barrier resistance 300 Ω

NOTE:These safety descriptions are alternatives, and not intended to beread in combination.

These safety descriptions cover most of the commonly usedindustry standard barriers, isolators and power supplies. Sometypical models are shown in the table below.

Manufacturer Model no. (HART compatible)MTL 3046B, 788, 4788, 5042, etc.Stahl 9303/15 - 22 - 11, 9001/01-280-085-10, etcPepprl & Fuchs KHD2 IST/Ex11, KHD3 IST/Ex1, Z428/Ex, etc.Elcon 1025, 1026, etc.

Supply voltage/ load diagram Minimum terminal voltage at the PH202

Load

Res

ista

nce

(Ω)

Voltage (V)

1200

11001000

800800

600

400

200

0

475

0 17 18 24 31.5 40limit forPH202S

Com-municationrange

818

1100

230

17

12

4 7 20Ter

min

al v

olta

ge (

V)

Output Current (mA)

FM CLASSIFICATION

Sensor(s) are of a passive type to be regarded as ‘simpleapparatus’, devices which neither store nor generate voltagesover 1.2V, currents over 0.1 A, power over 25 mW or energyover 20 µJ, or are FMRC entity approved and meet connectionrequirements.

Electrical data of the EXA PH202S- Supply and output circuit (terminal + and -):

Maximum input voltage Vmax = 31.5 V.Maximum input current Imax = 105 mA.Maximum input power Pmax = 1.75 W.Effective internal capacitance Cl = 22nFEffective internal inductance LI = 22µH.

- Sensor input circuit (terminals 11 through 19):Maximum output voltage Vt = 14.4 V.Maximum output current It= 32.3 mA.Maximum allowed external capacitance Ca = 670 nF.Maximum allowed external inductance La = 36 mH.

Any FMRC approved barrier or power supply may be used thatmeets the following requirements:

Voc or Vt < 31.5 V

Isc or It < 105 mAPmax < 1.75 WCa > 22nF + Ccable

La > 22µH + Lcable.

Installation should be in accordance with ANSI/RP 12.6 and NECrequirements. Maximum safe area voltage should not exceed 250 Vrms.

When a HART compatible hand held communicator is used onthe ISside of the barrier, refer to the manufacturers control drawing ofthe HHT and the barrier to determine the cable parameters.

CSA CLASSIFICATION

Sensor(s) are thermocouples, RTD’s, passive resistive switchdevices, or are CSA entity Approved and meet connectionrequirements.- Sensor input circuit (terminals 11 trough 19):

Maximum output voltage = 14.4 VMaximum output current = 32.3 mAMaximum allowed external capacitance = 2.55 µFMaximum allowed external inductance = 125 mH

Barriers and power supply should be CSA certified. Thespecifications must not exceed the following maximum values.- Supply and output circuit (terminals + and -):

Maximum input voltage = 31.5 VMaximum input current = 105 mAEffective internal capacitance = 22 nFEffective internal inductance = 22 µH

Installation should be in accordance with Canadian ElectricalCode, Part I or CED, Part I. Maximum safe area voltage shouldnot exceed 250 VRMS.

The hand held communicator must be of an explosion safe type– CSA certified – in case it is used in the hazardous area.

Non- IncendiveThe sensor input circuit (terminals 11 through 19) for the EXAPH202G (S) is non-incendive, having the parameters :

Maximum output voltage = 14.4 V. Maximum output current = 32.3 mA.Maximum allowed external capacitance = 1.4 µF.Maximum allowed external inductance = 900 mH.

It is certified for use in hazardous areas without the use of anapproved barrier as follows:ATEX <Ex>II 3G EEx nA [L] IIC T6...T4FM Class 1, Div 2, Group ABCD, T4...T3B

8

GS 12B6C3-E-H

SE

NS

OR

(S)

term

inal

11-

19

Hazardous area Safe area

+_

G

Protectiveearth

Protectiveearth

Intrinsically safe designFM Class1, Div.1,Group ABCD, T3B for ambient temp.<55ºC

T4 for ambient temp.<40ºCEXA PH202S (pH/ORP-transmitter)

+

_

LoadResistance

FMRC approvedsafety barrier or power suppy(HART compatible)

Suitable values are:Vmax = ≤ 31.5 Volts DCImax = ≤ 105 mA

24 v

olts

DC

Nom

inal

Sup

ply

Vol

tage

.

For electrical datasee text below

Safe area

Out

put

Sup

ply

+_

G

Protective earth

+_

SE

NS

OR

(S)

term

inal

11-

19

Uo = 31.5 Volts DCIo = 54.6 mAPo = 1.72 WattorUo = 21 Volts DCIo = 100 mAPo = 2.1 Watt

For electrical datasee text below

SE

NS

OR

(S)

term

inal

11-

19

Hazardous areaZone 0 or 1 Zone 1

Safe area

+_

G

Protectiveearth

Protectiveearth

Intrinsically safe design<Ex> II 2(1)G EEX ib [ia] IIC: T4 for ambient temp.<55ºC

T6 for ambient temp.<40ºCCertificate nr. KEMA 00 ATEX 1068XEXA PH202S (pH/ORP-transmitter)

+

_

LoadResistance

EEX ibCertified safety barrier orpower suppy with Rint = 300 Ω(HART compatible)

Uo = 31.5 Volts DCIo = 105 mAPo = 0.82 Watt

24 v

olts

DC

Nom

inal

Sup

ply

Vol

tage

.

For electrical datasee text below

Hazardous areaZone 0 or 1 Zone 1

Intrinsically safe design<Ex> II 2(1)G EEX ib [ia] IIC: T4 for ambient temp.<55ºC

T6 for ambient temp.<40ºCCertificate nr. KEMA 00 ATEX 1068XEXA PH202S (pH/ORP-transmitter)

EEX ibCertified RepeaterPower Suppy with Rint = 300 Ω(HART compatible)

9

GS 12B6C3-E-H

Safe area

Out

put

Sup

ply

+_

G

Hazardous area

Protective earth

+_

SE

NS

OR

(S)

term

inal

11-

19

Intrinsically safe designCSA Ex ia Class1, Div. 1,Group C&D, T3C for ambient temp.<55ºC

EXA PH202S (pH/ORP-transmitter)CSA certifiedPower suppy(HART compatible)

Suitable values are:Vmax = 31.5 Volts DCImax = 54.6 mAorVmax = 21 Volts DCImax = 85 mA

SE

NS

OR

(S)

term

inal

11-

19

Hazardous area Safe area

+_

G

Protectiveearth

Protectiveearth

Intrinsically safe designCSA Ex ia Class1, Div.1,Group C&D, T3C for ambienttemp.<55ºC

EXA PH202S (pH/ORP-transmitter)

+

_

LoadResistance

CSA certifiedsafety barrier or power suppy(HART compatible)

Suitable values are:Vmax = 31.5 Volts DCImax = 105 mA

24 v

olts

DC

Nom

inal

Sup

ply

Vol

tage

.

For electrical datasee text below

Safe area

Out

put

Sup

ply

+_

G

Hazardous area

Protective earth

+_

SE

NS

OR

(S)

term

inal

11-

19

Intrinsically safe designFM Class, Div. 1, Group ABCD: T3B for ambient temp.<55ºC

T4 for ambient temp.<40ºCEXA PH202S (pH/ORP-transmitter)

FMRC approvedPower suppy(HART compatible)

Suitable values are:Voc Vt ≤ 31.5 Volts DCIsc or It 54.6 mAorVoc or Vt ≤ 21 Volts DCIsc or It ≤ 85 mAFor electrical data

see text below

or

10

GS 12B6C3-E-H

SYSTEM CONNECTION

1 21 2 18018010010000

INPUTOUTPUT/SUPPLY

Safety BarrierPH202S only ref

pH/ORPtemp.

FITTING SENSORS

2,5 or 10 m

DISTRIBUTOR

RECORDER

COMPUTER HAND HELDCOMMUNICATOR

CU

RR

EN

T O

UT

PU

T

11

GS 12B6C3-E-H

Panel mountingSurface mounting

Universal pipe/wall mounting

Cut-out dimension Spacing panelcut-out dimension

162 (6.4)

180

(7)

30 (1.2)

92 (3.6)

115 (4.5)

56 ±2.2

1/2”supply

M6 bolts (2X)

1/2”input

min. 203(min. 8.0)

154(6.06)

2x ø4(0.16)

30 (1.18)

30 (1

.18)

172

(6.7

7)

min

. 22

9

(min

. 9.

0)

Pipe mounting(vertical)

Wall mounting Pipe mounting(horizontal)

2” ND. pipe

56(2.20)

2x ø6.5

(0.26)

4x ø10

(0.4)

70

(2.75)

115(4.5)

(3.6)

200

(7.8

7)

DIMENSIONS AND MOUNTING

Option /U: universal pipe/wall mounting kit

Unit: mm (inch)

92

GS 12B6C3-E-HSubject to change without notice Printed in The Netherlands, 04-011 (A) QCopyright©

EUROPEAN HEADQUARTERSYokogawa Europe B.V.Databankweg 203821 AL AMERSFOORTThe NetherlandsTel. +31-33-4641 611Fax +31-33-4641 610E-mail: info@yokogawa.nlwww.yokogawa-europe.com

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Distributors in:Denmark, Finland, Greece,Norway, Portugal, RussianFederation, Sweden, Switzerlandand Turkey.

Block 02, 10-00

ISO 9001

CERTIFICATEDFIRM