5 | Bases for measurement
Dissolved oxygen measuring device
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B-H86.0.21.DB2-1.0
3. Fill the pipette with the KOH electrolyte and initially fill the membrane head to ¾
full. Rinse off the excess electrolyte.
4. Slowly fill the sensor via the fill opening. In the process, tilt the sensor from side to
side and tap the shaft to force out air bubbles. The sensor holds approximately 5
ml. If air bubbles no longer appear and the refill opening is filled up to the rim with
KOH, screw the in the seal screw again.
5. Rinse off excess KOH and screw the sensor on with the membrane head. In the
process, if there are any recognisable air bubbles under the membrane, KOH
must be added.
6. After filling, the sensor should rest for 2 hours before a calibration is started.
Outcome of an action
The sensor has now been refilled. A sensor evaluation during the calibration should
produce a result of 100%.
NOTE
Should it no longer be possible to calibrate the sensor or it only delivers unstable
measurements, it must be maintained and/or the membrane head must be replaced
