BSV PRO200 User Manual page 55

3) Switch on the electrolysis / dosing System. The CL reading will slowly
increase and will be stable after some minutes.
Note: When the probe is switched on for the first time, the stabilization
time could take longer than usual. In any case, it is recommendable to
wait for at least 3 hours before making a first calibration.
4) Calibration
Wait until the CL reading is stable. If a difference between the display
reading and the water testing by means of DPD-1 testing is observed,
perform a calibration as follows:
a. DPD-1 test. Take a water sample from the small plastic tap
placed at the bottom part of the probe holder.
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Manual PRO v.3