Measuring - Testo 252 Bedienungsanleitung

Conductivity measurement

Measuring

You have connected the sensor according to the
chapter "Instructions of use" and prepared the
measuring instrument according to "Storing cell
Type 8
Type 11
constants" and "Setting a temperature
coefficient". The instrument is switched on.
Place the sensor in the measuring solution.
With type 11, the measuring solution must be
up to the air vents. Make sure that all the air
has escaped from the measuring cell (move the
measuring cell gently when dipping into the
solution) otherwise the measured values
fluctuate and are pressure dependent .
With type 8 , the solution must be just over the
level of the 4 electrodes. The air vent must not
be immersed.
After a short adaption phase, the conductivity
value, based on the set reference temperature, and
the temperature are displayed.
By pressing the page key, you can call up the salt
content of the electrolyte which corresponds with
the conductivity. This value in mg/l NaCl is
calculated from the conductivity measured.
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