ProMinent DULCOMETER diaLog DACb Assembly And Operating Instruction page 108

Calibration
NOTICE!
Prerequisites for a correct calibration of
the sensor zero point
– The run in period for the sensor
has been adhered to
– There is permitted and constant
flow at the in-line probe housing
– There is temperature balance
between the sensor and the
sample water
– There is a constant pH value in the
permitted range
1. Press the key in the continuous dis‐
play.
2. Using the arrow keys select the
[Zero point]
3. Then press
CAL Cl
Zero point
Range
Accept with <CAL>
108
Fig. 64: Calibration of zero point
4. Then press
CAL Cl
Calibration successful
Slope
Zero point
continue with <CAL>
Fig. 65: Calibration of zero point
5. Import the result of the calibration into
the controller memory by pressing the
key
The controller displays the contin‐
ð
uous display again and operates
with the results of the calibration.
A1046
Incorrect calibration
Should the result of the cal‐
ibration lie outside the
specified tolerance limits,
an error message appears.
In this case the current cali‐
bration will not be applied.
Check the prerequisites for
the calibration and clear the
error. Then repeat the cali‐
bration
A1048