Selecta PH-3005 - Accessories; Technical Support; Troubleshooting

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6.3 Troubleshooting
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Table
6‐2
CommonTroubleshooting
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7 TechnicalSupport
Accessories
Pleaserefertotheaccessoriestableforpurchasingrecommendations.
Table7‐1Meteraccessories
Name Description
E‐301‐QCpHthree
composite
Conventionalsamplemeasurement
REX‐5Multifunctional
ElectrodeHolder
Holdtheelectrodesduringmeasurement
PowerAdapter
Input:AC100～240V,Output:DC9V
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No. Phenomenon Solutions
1 Notswitchedon
Checkwhetherthepoweradapterhasvoltageoutputornot.
2 Unabletocalibrate
InaccuratepreparationofstandardpHbuffersolutionsordamaged
electrodes.
3
Thereadingjumpsbackandforth
Checkwhetherthereareinterferingdevicesaroundthedetection
instrument,pleasestayawayfromtheinterferingdevicesorshieldthem.
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4
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Inaccuratemeasurements
CheckwhetherthestandardpHbuffersolutioniscontaminated,replacethe
standardpHbuffersolutionandre‐calibrate;iftheelectrodeis
contaminatedorthecloggingliquidjunctionisblocked,cleanitaccordingto
theelectrodeinstructions.
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5
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Slowmeasurementresponse
Iftheglassbulboftheelectrodeispolluted,cleanitaccordingtothe
electrodemanualandthetypeofcontamination.Ifthetemperatureof
themeasuredsolutionislow,itisanormalphenomenon.