WT.050.560.001.UA.IM.0714
72
Depolox
®
3 plus ReSIDUAl ANAlYZeR
eVoQUA
W3T140188
Commissioning the Membrane Sensor for Ozone Oz7
CAUTION: When unscrewing the filled membrane cap, both elastomer seals
lying one on top of the other above the type imprint must be pushed to the
side to allow air to flow into the electrolyte chamber, otherwise the mem-
brane will be destroyed due to developing negative pressure.
1. Remove the black insulating tube from the electrode finger.
2. Open the container with the membrane cap, empty out the water and
remove the membrane cap.
3. Fill the membrane cap up to the top of the threads inside the cap with
the included gel electrolyte.
NOTE: Ensure that only one elastomer seal is in the slot and that the
valve opening closes.
4. Rub gold working electrode with the included lapping paper (special
emery). To do this, lay the lapping paper on a paper towel, take hold
of the corner and while holding the measuring cell vertically, slide the
electrode end one to two times over the rough side of the lapping paper.
5. Then place the electrode shaft on the filled membrane cap and slowly
screw the membrane cap in place by hand.
NOTE: Because the excess electrolyte escapes through the hose valve,
do not clamp it shut.
6. Then push the second elastomer seal in the slot over the first one.
NOTE: The elastomer seals may not form creases.
7. Rinse away the escaped electrolyte with water.
NOTE: The membrane cap must be completely screwed onto the electrode
shaft so that there is no gap between the two! After approximately two
hours, the membrane sensor is sufficiently run in so that it can be initially
calibrated. The calibration must be repeated after approx. one day.
!
Summary of Contents for Wallace & Tiernan Depolox 3 plus
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