Necessity of calibrating the zero point
Calibration of the zero point is not generally necessary.
Calibration of the zero point is only necessary if the
sensor is operated at the lower limit of the measuring
range or if the 0.5 ppm sensor version is used.
A container with water, which is free of additives that could falsify
the measured result, is needed for calibration. Immerse the dis‐
mounted, but still electrically connected to the
DULCOMETER
®
D1Cb / D1Cc, sensor in this water. Use the
sensor to stir the water for approx. 5 minutes until the measured
value displayed at the DULCOMETER
®
D1Cb / D1Cc is steady
and close to "0".
1.
Select Calibration menu. Then press
2.
Select "Zero point" of unit to be calibrated using the key
3.
Continue with
ð
A prompt is shown in the display
4.
Confirm prompt with the key
5.
Continue with
6.
Apply the "zero point" displayed during calibration using the
key
7.
Then press
ð
Display shows the values determined.
8.
Then press
ð
Refer to the Error Message table should an error be dis‐
played.
NOTICE!
Then definitively calibrate the slope with a suitable ref‐
erence method (e.g. DPD. titration etc.).
Calibration of amperometric sensors:
Zero point (only in the complete oper‐
ating menu)
Start up
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