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

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
calibration
10. Then press
unsuccessful)
8.2

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 instruc‐
tions.
Operating menus for the measured variables pH and ORP
'ZERO' using the keys
.
to accept the value
to confirm the result or to terminate the calibration (if necessary, as
key again
'SLOPE' . Press the
, and
key to confirm and if
key again
'ZERO' and
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