Xylem WTW DurOx 325, Operating Manual, Page: 10 / 20

Maintenance, cleaning, replacement DurOx 325
10 ba25400e04 10/2020
Carefully shake off the drops
of water. Fill a new membrane cap with
ELY/G electrolyte solution. Remove any air bubbles by
carefully tapping the
membrane head. Additionally,
you can prevent air bubbles
by throwing the first filling
away and refilling the
membrane cap.
Thoroughly rinse the sensor
head with electrolyte solution. Hold the sensor inclined and
screw on the membrane head
fingertight using a paper
towel. Excess electrolyte
solution is forced out of the
ventilation area. Check the filling:
Inspect the face surface. No
air bubbles may be present
within the dashed circle. Air
bubbles outside this area do
not interfere.
Note
For measurements under high pressure the filling must be
completely free of air bubbles.
Readiness to measure After approx. 30 to 50 minutes, the sensor is ready for operation.
Subsequently calibrate the sensor.
Note
If you want to measure very low oxygen concentrations (< 0.5 %
saturation), we recommend to let the sensor rest overnight and
then calibrate it.
EL
Y/G
EL
Y/G
Ventilation area
points upwards
3 mm