User manual

WQ500 Series-EU-EN V1.2 10/13

ORPCalibration

CalibrationisnotnecessaryforORP.However,ORPshouldbeverifiedwithORPstandardsolution

tocheckwhethertheelectrodeisinproperworkingorderornot.

Conductivity,TDS,andSalinityCalibration

1. DiptheConductivitycellandthetemperatureprobeintothestandardsolution1413μS/cm.

2. Stirgentlyandwaituntilthereadingisstable.

3. Press and hold the Power button for 3 sec. to enter the calibration mode. The display will

showCALand1413μS/cmwillflash.

When calibration is complete the display will stop flashing and indicate SA, then End. The

meterwillthenreturntothenormaloperatingmode.

Notes:

1. Calibratingwith12.88mS/cmstandardsolutionisbetterformeasuringwithhighconductivity

solutions.

2. TheiconCONDwilldisplayautomaticallyduringcalibrationmode.

3. Calibrationerrorindicatoriconwillappear(ErrinsteadofSA)ifcalibrationfails.

4. Ifthereadingisnot0μS/cmwhilethecellisinair(notdippedintoanysolution),calibratein

airtoobtainareading

of0μS/cm.

5. The Conductivity calibration points are: 0, 84μS/cm, 1413μS/cm, 12.88mS/cm and

80.0mS/cm.

DOCalibration

1. WiththeDOprobeattached,pressPowerbuttontoturnonmeterandthenpressMODEto

selectO2mode.

2. Wait10to30minutesfortheprobetopolarize.Thereadingshouldbeapprox.101.7%

(saturation)aftertheprobehascompletelypolarized

3. Removetheprobe.PressandholdPowerfor3sec.toentercalibrationmode.Thedisplaywill

showCALand101.7%willflash.

ThedisplaywillstopflashingandindicateSA,thenEndwhen

calibrationiscomplete.Themeterwillreturntothenormaloperatingmode.

4. Optional’zerooxygen’calibration:(improvesmeasurementaccuracyforveryloworveryhigh

DOmeasurements).Placetheprobeintoazerooxygencalibrationsolution,suchas

5%

sodiumsulfite,waitforstabilityandpressandholdPowertoentercalibration.Stabilityina

zerosolutionmaytakemanyminutes,dependingonprobehistory.

Note:

1. TheiconO2willdisplayautomaticallyduringcalibrationmode.

2. Calibrationerrorindicatoriconwillappear(ErrinsteadofSA)ifcalibrationfails.

3. Ifthe readingisnot0% whentheprobe isdisconnected,calibrateit inairwithoutprobe to

obtainareadingof0%.

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