ProMinent DULCOMETER D1Cc - Calibration of Ph Sensors. Description of the Setting Ranges; Calibration of Ph Sensors. Description of the Error Messages

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