ProMinent DULCOMETER Assembly And Operating Instructions Manual page 55

3. If temperature has been selected (only if
then set the buffer temperature with the keys
4. Confirm the entry by pressing the
5.
Do not set the pH-value of the buffer
'CAL=SKIP ZERO' appears (within no more than 10 s), press the
ð You have skipped the zero point calibration and are now in the slope calibra‐
tion screen
6. Set the pH-value of the buffer
7. Immerse sensor in the buffer solution containing test container (e.g. pH 4). In so
doing, slightly move the sensor
8. Then press
ð Calibration is running
9. Then press
10. The determined values for the zero point and slope are displayed
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
11.
Then press
unsuccessful)
Operating menus for the measured variables pH and ORP
'SLOPE' 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 or key
'ZERO' . Press the
key to confirm and if
key again
, and
'ZERO' and
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