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Calibrating the controller diaLog DACb
CAL pH
Last calibration
Zero point
Slope
CAL setup
Calibration process
Buffer temperature
continue with <CAL>
Fig. 41: pH sensor calibration (CAL)
1.
Continue with
2.
Take a water sample at the in-line probe housing and, using
a suitable method (measuring strips, hand measuring instru‐
ment), measure the pH value of the sample
CAL pH
1) Take sample
2) Determine pH value
pH value
Change with <OK>
Fig. 42: Instructions for determining the pH value using the
[Sample] method
3.
Press
4.
Use the arrow keys to enter the pH value you have deter‐
mined in the controller
5.
Press
6.
Accept the pH value by pressing
ð All the values of the calibration result are shown in the
display.
Incorrect calibration
An error message appears if the result of the cali‐
bration lies outside the specified tolerance limits. In
this case, the current calibration is not applied.
Check the prerequisites for calibration and clear
the error. Then repeat calibration.
7.
Transfer the result of the calibration into the controller
memory by pressing
ð The controller displays the continuous display again and
operates with the results of the calibration.
06/05/2013 14:26:07
Sample (1-point)
Manual
continue with <CAL>
A1023
A1022
81
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