Mettler Toledo pH electrode InPro3100/InPro3100UD User manual

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14 InPro 3100 (i) pH electrode

InPro 3100 (i) pH electrode © 04 / 16 Mettler-Toledo GmbH

52 002 293 Printed in Switzerland

1 Introduction ...................................................................15

2 Safetyinstructions ..........................................................15

3 Product description ......................................................... 15

4 Installationandcommissioning .......................................16

5 Operation .......................................................................16

5.1 CalibrationoftheelectrodeandpHtransmitter ..................16

5.2 Sterilization of electrode ..................................................16

5.3 TemperaturesensorofInPro3100(analogversion) ...........16

6 Maintenance ..................................................................17

7 Trouble-shooting(sluggishresponsetime,insufcientsensiti-

vityetc.) ........................................................................17

8 Disposal

........................................................................17

9 Guarantee ......................................................................17

Contents

en

InPro

3100 (i)

pH Electrode

Instruction Manual

InProandISMareregisteredtrademarks

ofMettler-ToledoGmbHinSwitzerland,theUSA,

theEuropeanUnionandafurthervecountries.

12 mm

0.47"

Connectortype(here:VP)

Bridgeelectrolyte

Silver-iontrapanddiaphgragm

Referenceelectrolyte

Temperaturesensor

Argenthalreferenceelement

Diaphragm

pH sensitive glass

en Instruction Manual

InPro 3100 (i) pH electrode 15

Printed in Switzerland 52 002 293

1 Introduction

The METTLER TOLEDO InPro 3100(i) pH electrodes are

low-maintenance, autoclavable and pressure-resistant

measuringelectrodeswithagel-typereferenceelectrolyte.

The reference element incorporates a silver-ion trap to

preventsilversuldeprecipitationonthediaphragm.Incase

ofInPro3100,atemperaturesensorisintegrated,mainlyfor

automatictemperaturecompensationpossibilitiesofthepH

signal during calibration and operation.

The InPro 3100(i) electrodes are mainly designed for

the measurement of pH value in biotechnical processes

at moderate pressures (<6bar). It can be used under

industrial fermentation, pilot and laboratory conditions,

and is particularly intended for those processes where

intermediatesterilizationorautoclavingisindispensable.

Pleasereadthroughtheseoperatinginstructionscarefully

beforecommissioning,inordertoensuretrouble-freeuse.

2 Safetyinstructions

The InPro 3100(i) electrodes are intended solely for the

purposedescribedin§1above.Theelectrodeconsistspartly

ofglassandshouldbehandledcarefully.Iftheelectrodeis

tobecleanedorcalibratedusingacidoralkalinesolutions,

safetygoggles and gloves shouldbeworn.Localsafety

regulationsareapplicabletothehandlingoftheelectrode.

Pleasefollowtheguidelinesenclosedforaninstallationin

theEx-zone.

We recommend that you only operate the electrode in

combination with original parts from METTLER TOLEDO.

Operationandmaintenanceshouldbecarriedoutonlyby

trainedpersonnelandstaffwhohavereadandunderstood

theoperatinginstructions.

3 Product description

The inscriptionon each electrode contains thefollowing

information:

METTLER TOLEDO Manufactureroftheelectrode

InPro

®

310XiUD/SG/yyy/zzzTypedesignation;X=membrane

glass;i=ISMDigital;UD=upside

down/SG=ancillaryelectrode/

yyy=rodlengthinmm/zzz=type

oftemperaturesensor

combinationpH Typeofelectrode

pH0…14 pHmeasurementrange

0…80°C/140°C(130°C) Temperaturerangeforoperation/

sterilization(forInPro3100UD)

OrderNo.5200XXXX Ordernumber

SEV14ATEX0168X Identicationandnumber

ofcerticate

IECExSEV14.0025X Identicationandnumber

ofcerticate

IS/I,II,III/1/ABCDEFG/T6 FMapproved

Seeinstructionmanual! Instruction(Observethe

operating instructions)

Inadditioneachelectrodeisallocatedaserialnumberon

theplug-inheadtoenableidenticationandtraceability.

en

16 InPro 3100 (i) pH electrode

InPro 3100 (i) pH electrode © 04 / 16 Mettler-Toledo GmbH

52 002 293 Printed in Switzerland

4 Installationandcommissioning

1. On unpacking, check the electrode for mechanical

damage of the pH sensitive glass and shaft. Report

any damage immediately to your METTLER TOLEDO

supplier.

2. Removethewateringcapandbrieyrinsetheelectrode

withdeionizedwater.Afterrinsing,theelectrodeshould

onlybedabbeddrywithatissue.DonotrubthepH

sensitive glass, since this can lead to electrostatic

chargingandsluggishresponsetimes.

3. CheckthespacebehindthepHsensitiveglassforthe

presenceofanyairbubblesandremovesamebygently

swingingtheelectrodeinaverticalplane.

4. Please refer to the instruction manual of the relative

housinginordertoinstalltheelectrode.

5. Connect the electrode to the pH transmitter, using a

cable with the appropriate connector (VP connector

forInPro3100).Pleaserefertothewiringandterminal

diagramaccompanyingthecable.

6. Intelligent ISM

®

electrodessuchasInPro310Xienable

“Plug and Measure” and extended diagnostics. For

installation, commissioning and operation of the

ISM system please observe the instructions for the

transmitter,moduleandcable.

5 Operation

5.1CalibrationoftheelectrodeandpHtransmitter

FortheInPro3100(i)electrodea2-pointpHcalibrationis

recommended.Beforecalibration,rstremovethewatering

cap.Tospeeduptheresponsetimeoftheelectrodeafter

longtransportandstorageperiods,andbeforecalibration,

diptheelectrodeintobufferpH7,bufferpH4andbufferpH

7again,eachtimeforaboutoneminute.Theelectrodeis

thendippedsuccessivelyintotwodifferentbuffersolutions

withgivenpHreferencevaluesandthetransmittercalibrated

tothesebuffervalues.NormallyyoustartwithbufferpH7

fordeterminingthe0-pointandthenbufferpH4or9for

determiningtheslope.Inthecaseofmicroprocessor-based

transmitters with buffer recognition,the order of the two

chosenbuffer solutionsis irrelevant.Whenever possible,

atemperaturesensor(forInPro3100theintegratedone)

should be connected to the transmitter and “automatic

temperaturemeasurement”selectedthere.Pleasereferto

theinstructionmanualofthetransmitterforfurtherdetails.

5.2Sterilizationofelectrode

TheInPro3100(i)electrodecanbesterilizedeitherthrough

autoclaving (remove red protection cap) or through in-

situ sterilization with steam or superheated fermentation

medium. Sterilization temperatures above 140°Care not

allowed,andexcessivesterilizationtime(forinstancet>30

minat140°C)could notably shorten the life time of the

electrode.Repeatedsterilizationand/orautoclavingofthe

electrodecanleadtoaslightcolorationoftheelectrolyte.

This color change does not effect the functioning of the

electrode.

5.3TemperaturesensorofInPro3100(analogversion)

The integrated Pt100/1000 temperature sensor in the

InPro3100isprimarilyintendedforautomatictemperature

compensationofthepHsignalandnotforanyaccurate

andsafetemperatureindicationorcontroloftheprocess

temperature. If you anyhow want to try this, check that

yourtransmitter has the required temperature indication

accuracyandafree outletforthesignal.Furthermore,a

calibrationofthetemperaturesignalmightbenecessary.

en

InPro 3100 (i) pH electrode 17

Printed in Switzerland 52 002 293

6 Maintenance

1. Carefully rinse the electrode tip and diaphragm with

deionizedwateraftereachproductioncycle.Underno

circumstancesmustmeasuringsolutionbeallowedto

dryontheseparts!

2. When the electrode is not in operation, store it with

electrode tip and diaphragm well submerged into

9823

/3MKClor9816/Viscolyt™electrolyte.

3. Iftheelectrodeisstoredmountedinitshousing,the

same rule as in 2) above applies, but the storage

electrolytehastobeslightlymodied,with2partsof

buffersolutionpH9.2to10partsofelectrolyte,thisin

ordertoavoidcorrosionofhousingparts.

4. Ifanelectrodeisstoreddryforafewdaysbymistake,

letitsoakinthenormalstorageelectrolyteforseveral

hoursbeforeuse.

5. Occasionallychecktheconnectorforpossibletracesof

moisture.Ifnecessary,cleanwellwithdeionizedwater

oralcohol,andafterwardsdrycarefully.

7 Trouble-shooting(sluggishresponsetime,

insufcientsensitivityetc.)

TheglassmembranecanbereactivatedusingaHFsolution

(orderno.51319053).Theelectrodetip(onlypHsensitive

glasspart)isimmersedintotheHFsolutionforaperiodof

about5minutes,isthenimmediatelyandthoroughlyrinsed

withdeionizedwaterandthereafterstoredinbuffersolution

pH4(seepoint6above)uptothediaphragmfor12hours.

Po s siblep rote inpre c ipita t ionandblocka geoft h e diaphra g m

canbetreatedwithourspecialelectrodecleaner(orderno.

51340068).However,useofthediaphragmcleaner(order

no.51340070)isnormallynotnecessaryforthiselectrode

type,asthebuilt-insilver-iontrappreventstheformationof

silversuldecontamination.

Also,checktheconnectorforpossibletracesofmoisture.If

necessary,cleanwellusingdeionizedwateroralcohol,and

afterwardsdrycarefully.

8 Disposal

If no relative ofcial regulations are in force, used or

defectiveInPro3100(i)electrodesandthepackagingcan

bedisposedofasordinaryhouseholdwaste.

9 Guarantee

Onmanufacturingdefects,12monthsafterdelivery.

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74 InPro 3100 (i) pH electrode

52 002 293 Printed in Switzerland

–

Notes

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Brazil Mettler-ToledoInd.eCom.Ltda.

 AvenidaTamboré,418–Tamboré,

 BR-06460-000Barueri/SP,Brazil

 Phone+551141667400

 e-mailmettler@mettler.com.br;service@mettler.com.br

France Mettler-ToledoAnalyseIndustrielleS.A.S.

 30,Bld.deDouaumont,FR-75017Paris,France

 Phone+33147370600

 e-mailmtpro-f@mt.com

Germany Mettler-ToledoGmbH

 Prozeßanalytik,Ockerweg3,DE-35396Gießen

 Phone+49641507-444

 e-mailprozess@mt.com

Switzerland Mettler-Toledo(Schweiz)GmbH

 ImLangacher,CH-8606Greifensee

 Phone+41449444760

 e-mailProSupport.ch@mt.com

United States METTLER TOLEDO

 ProcessAnalytics

 900MiddlesexTurnpike,Bld.8,Billerica,MA01821,USA

 Phone+17813018800

 Freephone+18003528763(onlyUSA)

 e-mailmtprous@mt.com

FormoreaddressesofMETTLERTOLEDOMarketOrganizationspleasegoto:

www.mt.com/pro-MOs

Mettler-ToledoGmbH,ProcessAnalytics,ImHackacker15,CH-8902Urdorf

Phone+41447296211,Fax+41447296636

Subjecttotechnicalchanges

PrintedinSwitzerland.52002293

www.mt.com/pro

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