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6.6.2.Recommend calibrating one time every month under the normal circumstances; The
use of the conductance electrode after a period of time also needs to be calibrated
once.
6.6.3. Keeping the conductivity electrode clean and wash it with purified water, then throw
off the water on it before and after testing. It’s better to rinse electrodes with sample
solution;
6.6.4. The DJS series platinum black conductivity electrode surface is plated with a layer of
metal platinum black to used as lowering the electrode polarization, enlarge measuring
range, so can not polish the surface of platinum black, only can wash it in water by
shaking, in case to damage the platinum black coating; for organic stained things can
be washed with hot water with detergent or alcohol.
6.6.5. Conductivity electrode before use can be immersed in purified water, to prevent the
platinum black from passivation, if found the platinum black plated electrode is invalid,
can immerse it into 10% nitric acid solution or 10% hydrochloric acid for 2 minutes,
then rinse with purified water and again test. If the situation does not improve, then
need to replace platinum black, or replacing a new conductivity electrode.
6.6.6. When it appears an abnormal reading when calibrating or displaying, please set P10
as
“
ON
”
to make the meter restore to producer setting mode, and then do calibrate
and measure again.
