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Redox electrode calibration
The Pool Relax redox electrode must be calibrated once every three months to compensate for any deviations in its measurement
behaviour. The electrode must be replaced once a year.
These maintenance and replacement intervals absolutely must be complied with to ensure that measurements are correct and that
water quality is at its best.
As an example, the procedure for a 1-point calibration of the redox electrode is described here.
The 1-point calibration takes place in the main menu (customer). In this menu, select the Measuring & Control menu followed by the
Calibration menu.
Procedure for the 1-point redox calibration:
Dip the electrode in a buffer solution of 465 mV.
Wait until Current Value mV stabilises and remains constant.
Under Cal. Value, enter 465 and confirm with "OK".
Touch Next to start the calibration.
The page that now appears shows the Electrode Slope and Offset parameters (zero shift). Although it is possible to adjust these
values here, they do not need to be changed.
Touch Ready to complete the calibration.
Parameter
Purpose
Setting
1-Point Calibration mV – Calibration input
Cal. Value mV
mV reference value for calibration
465 if using the 465 mV buffer solution
Current Value mV
Display of pH value currently measured
Measurement reading
1-Point Calibration mV - Calibration Results
Offset mV
Calculated offset mV
Calculated during calibration
Current Value mV
Display of mV value currently measured
Measurement reading