CellOx 325
Maintenance, cleaning, replacement
9
ba25301e06
12/2017
5.3
Changing the electrolyte and membrane cap
CAUTION
Before starting to work with the sensor, please note the G
ENERAL
MAINTENANCE
INSTRUCTIONS
on page 8.
General
information
WTW delivers the sensor ready to operate (see section 3). The electrolyte
solution and membrane cap must only be replaced if:
a calibration error occurs and the membrane is heavily contaminated
the membrane is damaged
the electrolyte solution is exhausted.
in case of a leak message by the measuring instrument
Changing the electrolyte and membrane cap
Unscrew the membrane cap.
Caution: Electrolyte solution!
For disposal of the membrane
head and electrolyte solution,
see section 5.6.
Rinse the sensor head with
deionized water.
Carefully rub and dry the
counter electrode with a lint-
free paper towel.
Immerse the sensor head
including the counter
electrode in RL/G cleaning
solution.
Allow to react for 1 to 3
minutes.
Thoroughly rinse the sensor
head with deionized water.
Water the counter electrode in
deionized water for at least
10 minutes.
RL/G
H O
2
