Chauvin Arnoux C.A 10001 Bedienungsanleitung Seite 18

5.2. CLEANING
5.2.1. HOUSING
Since the C.A 10001 is waterproof, you can wash the hous-
ing with soap and water. Do not use alcohol, solvents, or
hydrocarbons.
5.2.2. ELECTRODE
The presence of white deposits on the electrode is due to
the evaporation of the storage solution. To eliminate them,
rinse with water.
Do not use aggressive and/or abrasive products and do not
scratch the glass ball. Rinse the surface of the glass and the
external part of the junction with de-ionized water.
If rinsing is not enough, use cleaning solutions suited to the
type of contamination. Silver sulphide deposits are washed
with a solution of thiourea in 0.1mol/L hydrochloric acid.
Clogging by silver chloride can be eliminated with a concen-
trated ammonia solution. Proteins are cleaned using an acid
pepsin solution.
5.3. MAINTENANCE
Keep your electrode in an electrolytic solution in its bottle
or in another ion-rich aqueous solution in order to ensure
uninterrupted hydration of the membrane.
Do not keep the electrode dry or in distilled or de-ionized
water, since this could affect the membrane and shorten the
life of the electrode.
Use fresh buffer solutions for each calibration.
Rinse the electrode in de-ionized water after each meas-
urement.
5.4. TROUBLESHOOTING
The instrument fails to switch on when the
„ Check that the batteries are in place and that the polarities
are correct.
„ Replace the batteries and try again.
„ Remove the batteries for one minute, then put them back
in place and try again.
The instrument responds slowly
Clean the electrode. Refer to §5.2.2.
The measurement fluctuates rapidly
The electrode is not immersed far enough in the solution
or the junction is fouled. In this case, refer to §5.2.2. for the
cleaning procedure.
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key is pressed.