Selecta PH-3005 - Electrode Usage and Maintenance; Maintenance; Maintenance and Troubleshooting

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Figure5‐8Measurementdisplay
5) Ifnecessary,youcanpressthe"Save/▼"keytoSavethemeasurementresults.
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 Toensure accurate measurement, the sample volumeinthecontainershouldbe sufficient toensure that the
junctionofthemeasuringandthereferenceelectrodeiscompletelyimmersedinthesample.
 Foraccuratemeasurement,itisrecommendedthatusers calibrate
and measureat thesametemperature.
6 MaintenanceandTroubleshooting
6.1 Maintenance
Thecorrectuseandmaintenanceofthemetercanensurethenormalandreliableoperationofthemeter,
especiallythepHmeter,whichhasahighinputimpedanceandiseasilydamagedbystaticelectricityandother
electromagneticinterference;Inaddition,itwilloftencomeintocontactwithchemicals,andtheuseenvironmentis
relativelyharsh,soreasonablemaintenanceisrequired:WhentheQ9interface ofthemeter is notconnectedto the
electrode,pleaseinserttheQ9short‐circuitplugtopreventthemeterfrombeingdamaged.
PleaseplacetheQ9short‐circuitpluginadryandcleanenvironmenttopreventtheshort‐circuitplugfrombeingcorroded
toaffecttheshort‐circuiteffect.
• Ifthemeterisnotusedforalongtime,pleasedisconnectthepowersupply.
• Theelectrodesocketofthemetermustbekeptcleananddry,andshouldnotbeincontactwithacid,alkaliorsalt
solution.
• Thehousingmaterial ofthismeterissensitivetocertainorganicsolventssuchastoluene, xylene,andmethylethyl
ketone(MEK).Ifliquidentersthehousing,itmaydamagethemeter.Tocleanthemeterhousing,wipegentlywitha
toweldampenedwithwaterandmilddetergent.
• Ifthemeterisnotusedforalongtime,pleasecoverthedustcover.
• Whentransportingthemeter,pleaseabidebythefollowinginstructions:
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• Unplugthemeterandremoveallconnectedcables.
• Removeelectrodeholder.
• Toavoidmeterdamageduringlongdistancetransportation,pleasetrytouseoriginalpacking.
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6.2 Electrodeusageandmaintenance
Before using the electrode, you should read the electrode manual carefully to know the type, structure and
applicationscopeoftheelectrode.ForcompositepHelectrodeswithplasticshells,thefollowingpointsshouldgenerally
benoted:
 The external reference supplement of the composite electrode is 3mol/L potassium chloride solution. The
supplementcanbeaddedfromthesmallholeatthetopoftheelectrode.Whenthecompositeelectrodeisnotin
use,therubbercovershouldbepulledtopreventthesupplementfromdryingup.