Xylem WQL-pH pH DATALOGGERS - Manual (Page 37)

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