JUMO 202710/30, Руководство по эксплуатации

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5 Measuring
5.1 The measuring cell
The conductivity measurement is a relatively straightforward measurement.
The measuring cell that is securely connected to the device remains stable for
a long time when properly used and can be aligned using the integrated cali-
bration function (see chapter 7.2, page 33).
Use
For measuring purposes, the measuring cell must be immersed in the mea-
surement medium to a minimum depth of 30 mm and a maximum depth of
110 mm.
The measuring cell can be stored dry or standing in clean water.
A measuring cell that has been stored under dry conditions requires a slightly
longer time to display a stable measured value than a measuring cell that has
been stored under wet conditions.
Before the measuring cell is moved into a liquid with a significantly different
conductivity, it should be rinsed and the residual moisture should be captured
with an absorbent cloth or paper.
If an unexpectedly high or low conductivity is measured, this can be traced
back to pollutants on the electrodes. In this case, the measuring cell can be
cleaned with an aqueous detergent solution.
NOTE!
Never bring the measuring cell into contact with water-repellent substances
such as oil or silicone.
When performing measurements in measurement media with low conductivity,
it is necessary to ensure sufficient flow to the electrodes.
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