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15.1.1.2
2-Point Calibration of the pH Sensor (CAL)
Calibrating the controller diaLog DACb
2.
Press
CAL pH
Calibration process
Buffer detection
Buffer manufacturer
Buffer value 1
Buffer value 2
Buffer temperature
Fig. 35: Selecting the calibration process
ð The menu for selecting the calibration process appears.
3.
Use the arrow keys to select the required menu item and
press
ð The input window appears and you can make the neces‐
sary settings for your process
4.
Use the arrow keys to select the calibration process and
press
5.
Continue with
ð You can now start your chosen calibration process.
Correct sensor operation
Correct measuring and metering is only pos‐
–
sible if the sensor is working perfectly.
Refer to the sensor's operating instructions.
–
2-point calibration is strongly recommended
–
and is preferable to other methods.
The sensor needs to be removed and refitted
–
in the in-line probe housing for calibration.
Refer to the operating instructions for your in-
line probe housing.
2 point
requirement
ProMinent
pH 7
pH 4
Off
A1025
75
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