Extech Instruments PH210 Manual

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PH210-en-GB_v1.3 11/14

BatteryReplacement

The9Vbatterythatpowerstheinstrumentrequiresreplacingwhenthebatteryiconflasheson

thedisplay.Toreplacethebatteryfollowthestepsbelow:

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1. Disconnecttheelectrode/probefromtheinstrument.

2. OpentherearbatterycompartmentusingascrewdrivertoremovethetwoPhillipshead

screwsthatsecurethecompartment.

3. Carefullyremovetheoldbatteryfromthecompartmentlidchamberandgentlyunsnap

thebattery’sterminalsfromthewired(red/black)connectors.

4. Installanew9Vbatterybysnappingthebatteryterminalsontothewiredconnectors

(observingcorrectpolarity)andinsertingthebatteryintothecompartmentlidchamber.

5. Installthecompartmentlidchamberintothemeterhousingandsecurewiththetwo

screws.

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Neverdisposeofusedbatteriesorrechargeablebatteriesinhouseholdwaste.

Asconsumers,usersarelegallyrequiredtotakeusedbatteriestoappropriate

collectionsites,theretailstorewhere thebatterieswerepurchased,orwherever

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batteriesaresold.

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Disposal:Donotdisposeofthisinstrumentinhouseholdwaste.Theuserisobligatedtotake

end‐of‐lifedevicestoadesignatedcollectionpointforthedisposalofelectricalandelectronic

equipment.

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ElectrodeMaintenanceandTroubleshooting

Mostmeasurementdifficultiesarecausedbytheelectrode.Carefulhandlingandproperstorageof

theelectrodewillincreasemeasurementaccuracyandelectrodelife.

Electrodesshouldberinsedoftentoremovealltracesofstoragesolution,processmedium,or

previoustestsolution.

ElectrodeStorage

TheelectrodeshouldbestoredinasoakerbottleorwettingcapfilledwithpH4buffer.Never

storeanelectrodeindistilledordeionizedwaterasthiswillcausemigrationofthefillsolution

fromtheelectrode.

ElectrodeCleaning

Thetypeofelectrodecoatingthatoccursovertimewilldeterminethecleaningmethod.Soft

coatings can be removed by vigorous stirring or by using a squirt bottle. Organic chemical

coating(hard coatings)shouldbe chemicallyremoved.Onlyinextremecasesshouldthebulbbe

cleanedmechanically.