User manual

WQ500 Series-EU-EN V1.2 10/13
5
Preparation
pH,ORP,Conductivity,TDS(TotalDissolvedSolids),andSalinity
1. ConnectACadaptertoapowersource.
2. Removetheprotectioncapfromtheelectrodeandconnecttotheinputconnector.
3. Connectthetemperatureprobetothemeterandpoweron.
4. Rinsetheelectrodewithcleanwaterandwipedry.
DO(DissolvedOxygen)
1. ConnecttheDOprobeandtemperatureprobetothemeterandremovetheprotectivecap.
2. Carefullyremovethemembranecap.
3. Fillmembranecapwiththeelectrodesolutiontothebottomofthethreads insidethecap.
4. PressthePowerbuttontoswitchthemeterON.
CalibrationandOperation
pHCalibration(NOTE:ORPdoesnotrequirecalibration)
Beforeaccuratemeasurementscanbeobtained,itisnecessarytocalibratethemeterwiththe
electrode.Typically,pH7iscalibratedfirstandthenoneormoreoftheotherbuffers.
1. ConnectthepHelectrodetothemeter’sBNCconnectorinput.
2. DiptheelectrodeandtemperatureprobeintothepH7.00buffersolution.Stirgentlyand
waitforastablereading.
3. PressandholdthePowerbuttonfor3secondstoentercalibrationmode.
4. TheLCDwilldisplayCALanda 7.00willflash.
5. WhencalibrationiscompletethedisplaywillstopflashingandshowSA
thenEND.
6. Themeterwillnowreturntonormaloperatingmode.
7. Rinsetheelectrodeandwipedry.DiptheelectrodeinpH4.01orpH10.01.TheLCDwill
indicateapercentageofslope(PTS)toshowthestatusoftheelectrode.
8. IfPTSisbelow70%
orabove130%theelectrodemustbereplaced.Aslopeof100%isideal.
Notes:
1. Calibrationerrorindicatoriconwillappear(ErrinsteadofSA)ifcalibrationfails.
2. Whendoinga2or3pointcalibration,calibratewithbufferpH7first,andthenfollowwith
bufferpH4orpH10.
3. pHcalibrationtype“USA”or“NIST”canbechangedintheAdvancedSettingmode(seethe
AdvancedSettingssection).
4. Thecalibrationpointsfor“USA”are1.68,4.01,7.00,10.01and12.45.
5. Thecalibrationpointsfor“NIST”are1.68,4.01,
6.86,9.18and12.45.