Redox Sensor Calibration (Cal) - ProMinent DULCOMETER Assembly And Operating Instructions Manual

Operating menus for the pH and redox measured variables
3. If temperature has been selected (only if
then set the buffer temperature with the keys
4.
Confirm the entry by pressing the
5.
Set the pH-value of the buffer
6. Immerse sensor in the buffer solution containing test container (e.g. pH 7). In so
doing, slightly move the sensor
7.
Then press
ð Calibration is running
8.
Then press
9.
Do not set the pH-value of the buffer
'CAL=SKIP SLOPE' appears (within no more than 10 s), press the
ð The calibration is now saved as successful if the values for
'SLOPE' are both 'OK' .
Incorrect calibration
Should the result of the calibration lie outside the specified tolerance limits, an error
message appears 'ERR' . In this case the current calibration will not be applied.
Check the prerequisites for the calibration and clear the error. Then repeat the cali‐
bration
10.
Then press
unsuccessful)
7.2

Redox sensor calibration (CAL)

Redox sensor calibration
The redox sensor cannot be calibrated. It is only possible to set an 'OFFSET' of the
order of ± 40 mV and then make a comparison using this value. Should the redox
sensor differ by more than ± 40 mV from the reference value, then it must be
checked in accordance with the requirements of the sensor operating instructions.
54
'ZERO' using the keys
.
to accept the value
to confirm the result or to terminate the calibration (if necessary, as
'TEMP' is set to 'auto' or 'manual' ),
, and
key again
'SLOPE' . Press the
, and
key to confirm and if
key again
'ZERO' and