Calibration Of Ph Sensors. Description Of The Setting Ranges; Calibration Of Ph Sensors. Description Of The Error Messages - ProMinent DULCOMETER D1Cb Series Instructions For Assembly And Use

Measured Variables and Operating Menus for Potentiometric Sensors
7.5.2

Calibration of pH Sensors. Description of the Setting Ranges

Setting
Starting value
Calibration Reading
temperature
Buffer values Reading
(whole digit
rounded up)
7.5.3

Calibration of pH Sensors. Description of the Error Messages

Error message
Buffer gap too small
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 calibra‐
tion.
72
Possible values
Increment
0.1 ℃
0.01 pH
Condition Effect
∆buffer <2 pH During the calibration process: recalibrate buffer 2!
Back to the permanent display
< -60 mV Basic load metering
> +60 mV Basic load metering
< 40 mV/pH Basic load metering
> 65mV/pH Basic load metering
Lower value Upper value
0 °C 100 ℃
-1.45 pH 15.45 pH
Note: old zero point and
gradient remain
Note: old zero point and
gradient remain
Note: old zero point and
gradient remain
Note: old zero point and
gradient remain
Note: old zero point and
gradient remain
Note: old zero point and
gradient remain
Remarks
Error
message if the
two buffers lie
too close to
each other (<2
pH values)