Installation, Programming and Maintenance Microdos Pooltec
Rev. 1.0 EN
31
4.5.3.4.4. CALIBRATE THE POTENTIOSTATIC CHLORINE PROBE
NOTE:
• it will be necessary to do a comparative free chlorine test (e.g., a DPD1 photometric test).
•
ZERO CALIBRATION is factory performed then it is not possible.
•
Only GAIN CALIBRATION is possible.
GAIN CALIBRATION
RECOMMENDATIONS: before doing GAIN calibration, PAY ATTENTION TO THE FOLLOWING INSTRUCTIONS:
1. It is necessary to stabilize the water flow by turning the knob regulation till the floater stays in the upper position (60l/h).
2. Before calibrating the GAIN of the chlorine probe, stabilize the pH at the working conditions. (We recommend choosing a
value from 7.0 to 7.3pH).
3. It is necessary to do the Chlorine gain calibration at concentration values nearest possible to the desired setpoint. For
example, if the chlorine concentration desired is 1.20ppM it is strictly recommended to do the gain calibration with water in
those conditions. Use a DPD1 photometric test to check the chlorine concentration in the water sample taken from the Tap
(see the figure here below).
A = flow sensor
B = water inlet
C = water outlet
D = tap water sample
E = floater right position
F = water flow regulation
G = chlorine sensor
It is recommended to do the gain calibration after at least 2 or 3 hours of optimal working conditions, or alternatively it is possible to
do a first gain calibration after having installed Microdos Pooltec and the probe in the plant and then perform the definitive calibration
after 24 hours of working of the probe.
After having stabilized the flow and the pH and having stabilized the chlorine concentration at the optimal and desired value, wait for
the stabilization of the reading on the Microdos Pooltec display.
Do a DPD1 test on the water sample taken from the Tap of the probe holder (D).
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