ProMinent DULCODOS Pool Comfort, Assembly And Operating Instructions Manual, Page: 35 / 84

CAL Cl
A1039
Zero point
Slope
Slope calibration
Calibration of zero point
4.00 mA
Last calibration 31.03. 2013 13:11:11
100 %
Fig. 19: Display [Calibration] with the example of [Chlorine]
Calibrating measuring channel 1 and measuring
channel 2
The calibration processes are identical for meas‐
uring channel 1 and measuring channel 2. How‐
ever, it is necessary to calibrate each measuring
channel separately
7.3.1.1 Calibrating the pH sensor
To ensure a high level of measuring accuracy, adjust the pH
sensor at set time intervals. This calibration interval seriously
depends on the application of the pH sensor and on the required
measurement accuracy and reproducibility. The calibration interval
can vary between daily and every few months.
Tab. 4: Valid calibration values
Assessment Zero point Slope
Very good -30 mV … +30 mV 56 mV/pH … 60 mV/pH
Good -45 mV … +45 mV 56 mV/pH … 61 mV/pH
Acceptable -60 mV … +60 mV 55 mV/pH … 62 mV/pH
If you measure the pH with potential equalisation,
set this [Potential equalisation] procedure as a
parameter when selecting the measured variable
as a parameter.
Calibrate the pH-sensor for the function: pH com‐
pensation for chlorine measurement
It is mandatory that the pH measurement is always
calibrated first, followed by the chlorine measure‐
ment. Calibration of the chlorine measurement
should always follow every further calibration of the
pH measurement, otherwise the chlorine measure‐
ment will be inaccurate.
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