Yokogawa 2-Wire Dual Channel Transmitter/Analyzer FLXA21 Manual de usuario descargar pdf (Pagina 79)

<5. CALIBRATION OF pH/ORP>

5-5

IM 12A01A02-01E 5th Edition : Oct. 31, 2013-00

5.1.3 Sample calibration

A sample calibration is a single-point calibration for only the zero (asymmetric). It adjusts the

recordedreadingtoacollectedsamplevalue.Press[TakeSample]torecordacollectedsample

valueinmemory.Re-entertheSampleCal.screenandpress[Startcalibration]toperforma

sample calibration. This updates the recorded data.

NOTE

Whenasensororanelectrodeisexchangedorreplaced,sensorwellnessdatashouldbereset.

When a sensor is replaced, the replacement can be recorded manually into a logbook. (Refer to

thegure3.9.)

5.2 Temperature calibration

For the most accurate measurements, it is important to have a precise temperature

measurement. Measure the temperature with a high-precision thermometer and adjust the

sensor reading accordingly. For best accuracy, this should be done as near to the normal

operating temperature as possible.

5.3 ORP calibration (rH calibration)

ThecalibrationmodesforORPorrHare“Manual”and“Sample”.Noautomaticcalibration

feature is available in an ORP or rH calibration.

Calibration is performed stepwise. Follow the prompts displayed on the screen.

Astabilitycheckismadeateachmeasurementpoint.Proceedtothenextsteponlyafterthe

reading has stabilized.

NOTE

Whenasensororanelectrodeisexchangedorreplaced,sensorwellnessdatashouldbereset.

When a sensor is replaced, the replacement can be recorded manually into a logbook. (Refer to

thegure3.9.)

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Yokogawa 2-Wire Dual Channel Transmitter/Analyzer FLXA21 Manual de usuario Pagina 79