16 InPro 42XX (i) Series pH electrode
InPro 42XX (i) pH electrode © 04 / 16 Mettler-Toledo GmbH
52 005 365 Printed in Switzerland
4 Installation and commissioning
1. While unpacking check the electrode for
mechanicaldamage.Pleasereportanydamage
immediatelytoyourMETTLERTOLEDOsupplier.
2.Removetheprotectivecapandrinsetheelectrode
for a short time with deionized water. If the
electrodehasalreadybeenusedthesensitivepart
canbecleanedwithasofttoothbrushandamild
soapsolution,andthenrinsedforashorttimewith
deionizedwater.Afterrinsingtheelectrodeshould
onlybedabbed.AnyrubbingofthepHsensitive
glasscanincreasetheresponsetimeasaresult
ofelectrostaticchargeaccumulation.
3.Check the spacebehind thepHsensitive glass
forairbubblesandremoveanyairbubblesthat
maybepresentbyshakingtheelectrodeslightly
in a vertical direction.
4.Placetheelectrodeintothehousingasdescribed
intheinstructionsforthehousing.
5.ConnecttheelectrodeandthepHtransmitterwith
thecorrespondingcable(VP6,VP8,AK9).Observe
the connections scheme that accompanies
thecableorthetransmitter.
6. Intelligent ISM
®
sensorssuchasInPro426Xienable
“PlugandMeasure” andexpandeddiagnostics.
Forinstallation,commissioningandoperationof
theISMsystempleaserefertoinstructionsforthe
transmitter, module and cable.
5 Operation: Calibration of the electrode
and pH transmitter
Before a calibration immerse the electrode for
10minutesinapH7.00orpH4.01buffersolution
whilst connected it to the transmitter. A 2-point
calibration is recommended, e.g. pH 7.00 and pH
4.01buffersolutions.Forfurtherdetailspleaseconsult
theoperatinginstructionsforthepHtransmitter.
6 Maintenance
1. After each working cycle the electrode tip and
diaphragm have to be carefully rinsed with
deionized water. Any remaning of the solution
beingmeasuredonthesepartsmustbeavoided
at all costs!
2. Iftheelectrodeisnotinuseithastobestoredwith
theelectrodetipandthediaphragmimmersedin
atankofelectrolyte(9823/3MKClorFriscolyt™
9848).).
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