Installation Instructions

Maintenance Page 19/24
Installation and commissioning instructions
 Position the bead-filled cap under the probe and fill it back on the probe by turning clockwise
and locking the packing cap on the O-ring above the copper electrode.
3) Change of the copper counter-electrode
The change of the copper counter-electrode must be done every year. This period may vary depending
on water quality and flow rate on electrodes.
Please follow these steps to change the copper counter-electrodes:
 Disconnect the power supply wires from the measurement loop.
 Remove the probe from the measuring chamber (see above)
 Take the probe vertically and undo the packing cap by turning clockwise, take care not to lose
glass beads.
 Loosen the copper counter-electrode clockwise.
 Collect and discard the seals. At each electrode change the seals must be changed. BE
CARREFUL NOT to damage the platinum or gold rod!
 Replace new gasket and tighten new copper counter-electrode until O-ring is tight.
 Reassemble the packaging cap with the glass beads.
 After a change of counter-electrode the zero-point and slope calibration must be carried out as
described in § « VI Calibration ».
During all operations be careful not to touch and damage the gold or platinum rod.