BSVILLAGE PISCINE Simpool Mode D'emploi page 50

Simpool pH model
Programmable digital peristaltic pump
The pH cycle period features a Ton time during which the pump is active and a Toff time during which the pump is
stationary.
The Ton and Toff times are calculated at the beginning of a pH cycle based on the following formulas:
The pH Proportional Band can be programmed with the following values: 0.5/ 1/ 1.5/ 3 pH.
Example:

pH Setpoint = 7 pH

pH Cycle Period = 500 sec

Operating Mode = Acid

pH proportional band = 1 pH

Read value = 7.5 pH
The calibration of the pH probe is conducted for the 7.00 and 4.01 pH sections, which correspond to the pH values
of the buffer solutions provided in the installation kit. These values can be changed to adapt them to the available
buffer solutions.
If the application allows to work around a 7.00 pH value, you will be able to calibrate the probe for a single point. In
this case, the probe gain taken into account matches the theoretical one.
At the end of the calibration, the quality of the probe is displayed as a percentage. If the value is less than or equal
to 25%, the probe must be replaced.
The pH of a solution is influenced by the temperature as well and to compensate for this influence you need to
know its value. You can choose to offset the pH value automatically and with the temperature acquired by the
PT100 probe or to set the value manually.
ADSP7000407
Fig. 10 - Acid and alkaline operating diagrams
rev. 1.2
INSTRUCTION AND MAINTENANCE MANUAL
27/03/2015
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