Mettler Toledo pH electrodes InPro4501VP and InPro4501 User manual

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InPro 4501 pH Combination Electrode 11

InPro 4501 pH Combination Electrode © 02 / 16 Mettler-Toledo GmbH

52 002 390 Printed in Switzerland

InPro 4501

pH Combination Electrodes

General instructions

1. Introduction

Thesegeneralinstructionsmustbereadilyavailabletoopera-

torsoftheelectrodeatalltimes.Beforeusingtheelectrode,

theseinstructionsmustbereadandunderstoodbyalloperat-

ingpersonnel.

The



METTLER



TOLEDO



electrode



versions



InPro

®

4501VPand

InPro4501xedcablearelow-maintenance,temperature-com-

pensatedpHcombinationelectrodescontainingpolymerelec-

trolyte (Xerolyt

®

Plus), and are hereafter referred to as the

InPro4501 family. An integrated temperaturesensor (RTD)

provides automatic compensation of the electrode slope to

ensureaccuratereadings.

T

heInPro4501familyissuitableforpHmeasurementsin:

–

e

mulsions and suspensions

– sulde-bearingmedia

– solutions

c

ontaining

h

eavy

m

etals

(

lead,

m

ercury,

s

ilver,

e

tc.)

– processes

w

ith

r

apid

p

ressure



uctuations

(

within

t

he

g

iven

r

ange)

– measurements

in



w

astewater

a

nd

in



d

econtamination

p

ro-

cessesforindustrialefuents

– heavilycontaminatedmedia

ATTENTION:TheInPro4501familyelectrodesareunsuitable

forsterilization/autoclavingprocedures,forpro-

cesseswithrapidtemperatureuctuationsorfood

andbeverageapplications.

2. Safety remarks

TheInPro4501familyofelectrodesisintendedsolelyforthe

purposedescribedin§1above.Theelectrodesconsistpartly

ofglass.Iftheyaretobecleanedorcalibratedusingacidor

alkaline solutions, protective clothing (goggles and gloves)

mustbeworn.Inaddition,localandin-house-safetyregula-

tionsmustbeobserved.

W

e

r

ecommend

t

hat

t

he

e

lectrodes

o

nly

b

e

p

ut

in

to

o

peration

in



c

onjunction

w

ith

o

riginal

p

roducts

/



a

ccessories

f

rom



M

ETTLER

T

OLEDO.

T

he

e

lectrodes

m

ay

b

e

o

perated

a

nd



s

erviced

o

nly

b

y

p

ersonnel

f

amiliar

w

ith

t

he

e

quipment

in



q

uestion

a

nd

w

ho

h

ave

r

ead

a

nd

u

nderstood

t

hese

in

struc-

tions.

3. Product description

Themarkingsoneachelectrodeprovidethefollowinginforma-

tion:

InPro 4501 VP/xxx/yyy Designation/temperaturesensor/

solutionground(SG)

InPro 4501/xxx / yyy/zzz/www Fixedcabledesignation/

temperature

sensor/solution

ground(SG)/cablelength/

cable end

C

ombination electrode typeofsensor

Pt100/Pt1000 Typeofbuilt-intemperaturesen-

sor

p

H 1…14/0…100 °C pHmeasuringrange/tempera-

ture range

O

rder no. 41 453 310x Ordering number VP

Order no. 10 453 30xx Orderingnumberxedcable

en

en Instruction Manual

12 InPro 4501 pH Combination Electrode

Printed in Switzerland 52 002 390

4. Installation and preparation for use

1.Onunpacking,andagainpriortoinstallation,checktheelec-

trodevisuallyforsignsofmechanicaldamagetotheglass

membrane,theshaftandtheconnector.Reportanyfaultsor

defectsimmediatelytoyour authorizedMETTLERTOLEDO

dealer.

2.Removethewateringcapandrinsetheelectrodewithdis-

tilled orde-ionized water.Useonlysofttissuetodab the

electrodedry.Donotrubtheglassmembranesincethiscan

leadtosluggishresponsebehavioroftheelectrode.

3.Electrodeswithadryglassmembranemustbeconditioned

forseveralhoursina3molKClsolutionbeforebeingused.

4.Connectalwaysthesolutionground(bluecable)tothetrans-

mitter.

5.UsePTFEtapetosealtheNPTthread.

6.Ifpossibleusetheprotectionsleeve(orderno.52401808).

5. Cabling

TheInPro4501VPisequippedwithaVarioPinconnector.To

connect thecableto theelectrode,attach and gently rotate

untiltheconnectorisengaged(groove).Screwthecablecap

nutontotheelectrodeuntiltheconnectionissecure.Theplug

assemblyshouldbettedhand-tightonly;notoolsshouldbe

used.Fordetailsoftheexactassignmentoftheindividualcable

leads to the VP pins, please refer to the instruction leaet

“Preparationofthecableforconnectiontothetransmitter”sup-

pliedtogetherwiththecable.

InPro4501



xed

c

able.

T

here

a

re

t

wo

o

ptions

f

or

t

ermination

f

ortheInPro4501withxedcable:

• BNC

c

onnector

f

or

p

H

c

ombination

e

lectrode

w

ith

s

tripped

a

ndtinnedleadsforRTDandsolutionground.

• StrippedandtinnedleadsforpHcombinationelectrode,for

RTDandsolutionground.

Refertoyourtransmitterinstructionmanualforcorrectwiring.

ATTENTION:Thesolutiongroundleadisdesignedtogotoa

galvanicallyisolatedterminalonthetransmitter

andshouldnotbeusedasanoutergroundshield.

Ifthetransmitterdoesnothavesensordiagnos-

tics,thisleadshouldbeleftunterminated.

Color Function

black/transparent Glass

red Coaxshield/reference

grey RTDsensing(temperaturesensor,

3-wire

connection)

blue Solutionground

white RTDreturn(temperaturesensor,

2-wire

connection)

green RTDin(temperaturesensor,

2-wire

connection)

green/yellow Cableshield

6. Calibration and measurement

InPro4501VPelectrodesrequiretwo-pointcalibration.Before

calibration,thewateringcapmustberemovedfromthepH

electrode.Theelectrodeisthendippedsuccessivelyintotwo

differentbuffersolutions,eachof knownpHvalue,and the

transmittercalibratedtothesebuffervalues(forexample,buf-

ferspH4.01andpH7.00).Pleasenotetheinstructionsgiven

intheoperatingmanualofthetransmitter.Calibrationshould

berepeatedasandwhenneeded.

en

InPro 4501 pH Combination Electrode 13

InPro 4501 pH Combination Electrode © 02 / 16 Mettler-Toledo GmbH

52 002 390 Printed in Switzerland

7. Maintenance

– ElectrodeswithXerolytPluspolymerelectrolytecannotbe

relled.

– Electrodesshouldnotbestoreddryforanyperiodoftime

– Duringstorage,thewateringcapshouldbeinplace,lled

withFriscolyt

®

or3molKClsolution.

– Neverstoreanelectrodeindistilledordeionizedwater,as

thisshortensthelifetimeoftheelectrode.

– Should the electrode dry out, it must be conditioned for

24hoursinFriscolyt(orderingno.512340053for250mL,

or51340054for6x250mL)beforereuse.Aftercondition-

ing,recalibrationisrequired.

– After each workcycle, the tip of the electrode should be

cleanedusingde-ionizedwater.

ATTENTION:

D

o

n

ot

u

nder

a

ny

c

ircumstance

u

se

M

ETTLER



T

OLEDO

r

eactivating

s

olution

(

ordering

n

o.

5

1319053

/



in



U

SA

4

39895125)

a

s

t

his

c

on-

tains

h

ydrouoric

a

cid

(

HF)

w

hich

w

ould

a

ttack

t

heXerolytreferencesystem.

8. Diagnostics

Theelectrodesareequippedwithagroundingringwhichal-

lowsadiagnosticofthediaphragmcondition.Ifthisdiaphragm

(openjunction)shouldbecomecloggedorifthereferencere-

sistance exceeds a certain value (see transmitteroperation

manual),itisthennecessarytoreplacetheelectrode.Elec-

trodesoftheInPro4501familyshouldasageneralrulenotbe

cleanedwithacidiccleaningsolutions,e.g.diaphragmclean-

ingsolution,reactivationsolution,etc.However,byextremely

carefulapplication,itispossibletoreactivatetheglassmem-

brane,see«point9»below.

9. Troubleshooting(sluggishresponsetime,insuf-

cientsensitivity,etc.)

ATTENTION: The glass membrane must be very cautiously

dabbedwithHFsolutionusinganebrushandtakingcarethat

solutiondoesnotcomeintocontactwiththetitaniumpin(me-

tallic solution ground). Also check the electrode connector

(onlyVPversion)forpossibletracesofmoisture.Ifnecessary,

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

drycarefully.

10. Disposal

DisposeofInPro4501familyelectrodesinaccordancewith

localorstateregulations.

11. Guarantee

METTLERTOLEDOgrants12monthswarrantycoveringmanu-

facturingdefects,validfromthedateofproductionoftheelec-

trode.

InPro,

X

erolyt

a

nd

F

riscolyt

a

re

t

rademarks

o

f

t

he

M

ettler

T

oledo

G

roup.

Allothertrademarksarethepropertyoftheirrespectiveholders.

en

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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[email protected]

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390

www.mt.com/pro

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