Delta OHM HD2109.1, Operating Manual

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HD2109
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V2.4
8. Wait approximately 2 hours before using the probe, then calibrate.
ATTENTION:
The electrolyte solution contains Potassium Hydroxide (KOH) and is caustic!
Avoid contact with skin, use suitable gloves and protect the eyes. In case of
contact, rinse immediately and thouroughly with water.
Note : some residues (lead oxide and carbonate) due to the reaction of the electrolyte solution with
oxygen can be visible inside the membrane; such residues do not compromise the probe operability
and can be removed by unscrewing the head of the probe and rinsing the membrane during the
regular periodic maintenance. The accumulation of many residues in a short time (few days) may
indicate the presence of air bubbles inside the probe due to an incorrect filling, to the cap not suffi-
ciently closed or to leakage in the membrane.
DO9709SS
POLAROGRAPHIC PROBE
1. Unscrew the probe's head with the membrane
permeable to oxygen.
2. If necessary, replace the membrane.
3. Fill the probe's head with the DO 9701
electrolyte solution until the level indicated in
the figure (filling level).
4. Eliminate any possible air bubble in the
electrolyte solution.
5. Screw the probe's head back on carefully.
DO9709SS.1
GALVANIC PROBE
1. Unscrew the probe's head and the membrane permeable to oxygen. If necessary, replace the
membrane.
2. Attach the needle to a 10 ml syringe.
3. Using the syringe, withdraw the DO 9701.1 electrolyte solution.
4. Remove the air bubbles inside the syringe. Insert the needle into one of the four
holes surrounding the cathode of the probe and inject the solution until it leaks
out. The fill volume is approximately 5 ml.