Xylem WQL-pH pH DATALOGGERS User Manual

Page 37

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WQL-pH

Calibrating for pH measurements

111

ba75821e01

10/2009

Calibration

evaluation

After calibrating, the current system condition is evaluated. The asymmetry
and slope are evaluated separately. The probe symbol shows the worse case
evaluation of both.

.

Display

Asymmetry [mV]

Slope

[mV/pH]

-15 ... +15

-60.5 ... -58

-20 ... +20

-58 ... -57

-25 ... +25

-61 ... -60.5
or
-57 ... -56

Clean the electrode
according to the electrode
operating manual

-30 ... +30

-62 ... -61
or
-56 ... -50

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