Maintenance
CCS240/241
28
Hauser
a
1
2
3
A0037414
1
Sensor
2
Gas phase of aqueous chlorine dioxide solution
3
Aqueous chlorine dioxide solution
a
Distance between sensor and liquid, 5 to 10 mm (0.2 to 0.4 in)
1. Close the medium inlet and outlet and make sure that no medium can escape from the
assembly.
2. Remove sensor from assembly .
3. Unscrew measuring chamber and set aside.
4. Polish the sensor's gold cathode using the polishing sheet: Place a wetted strip of the
sheet in your hand, polish the gold cathode on the strip using circular movements, and
rinse the sensor with deionized water.
5. If necessary:
Top up the electrolyte in the measuring chamber and screw the measuring chamber
back onto the sensor shaft.
6. Fill the beaker to approx. 10 mm (0.4 in) with aqueous chlorine dioxide solution and put
in a safe place.
7. The sensor must not touch the liquid.
Place the sensor in the gas phase approx. 5 to 10 mm (0.2 to 0.4 in) above the aqueous
chlorine dioxide solution.
The sensor current will now increase. The absolute value and the rate of increase
depend on the temperature of the aqueous chlorine dioxide solution.