Section 5.3 do, Module, Hanging – Xylem ConOx User Manual
Page 12: Electrolyte, Solution, Membrane, Ion section 5.3 do
Maintenance, cleaning, replacement
ConOx
36
5.3
DO module: Changing the electrolyte solution and
membrane cap
Caution
Before starting to work with the sensor, please note the G
ENERAL
MAINTENANCE
INSTRUCTIONS
General
information
WTW delivers the DO module ready to use (see section 3). The electrolyte
solution and the membrane cap must only be replaced if:
l
a calibration error occurs and the membrane is heavily contaminated
l
the membrane is damaged
l
the electrolyte solution is exhausted.
Changing the electrolyte solution and membrane cap
Unscrew the membrane cap.
Caution: Electrolyte solution!
For disposal of the membrane
cap and electrolyte solution,
see section 5.7.
Rinse the sensor head with
deionized water.
Carefully rub and dry the
counter electrode with a lint-
free paper towel.
Immerse the sensor head in-
cluding the counter electrode
in RL/G cleaning solution.
Allow to react for 1 to 3 min-
utes.
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