Calibration Of Ph Sensors. Description Of The Setting Ranges; Calibration Of Ph Sensors. Description Of The Error Messages - ProMinent DULCOMETER D1Cb Assembly And Operating Instructions Manual

Measured Variables and Operating Menus for Potentiometric Sensors
8.5.2

Calibration of pH Sensors. Description of the Setting Ranges

Setting
Starting
value
Calibration Reading
temperature
Buffer Reading
values (whole digit
rounded up)
8.5.3

Calibration of pH Sensors. Description of the Error Messages

Error message
Buffer gap too small ∆buffer <2 pH
pH zero point low
pH zero point high
pH gradient low
pH gradient high
pH reading
unsteady
°C reading
unsteady
The following applies to all error messages: eliminate the source of the error and
repeat calibration.
Possible values
Increment
0.1 ℃
0.01 pH
Condition Effect
During the calibration process: recalibrate
buffer 2!
Back to the permanent display
< -60 mV Basic load metering Note: old zero point and
> +60 mV Basic load metering Note: old zero point and
< 40 mV/pH Basic load metering Note: old zero point and
> 65mV/pH Basic load metering Note: old zero point and
Lower value Upper value
0 °C 100 ℃
-1.45 pH 15.45 pH
gradient remain
gradient remain
gradient remain
gradient remain
Note: old zero point and
gradient remain
Note: old zero point and
gradient remain
Remarks
Error mes‐
sage if the
two buffers
lie too close
to each
other (<2 pH
values)
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