![JUMO 202755/20 Operating Instructions Manual Download Page 52](http://html1.mh-extra.com/html/jumo/202755-20/202755-20_operating-instructions-manual_2031241052.webp)
11 Calibration
52
✱
Use the
and
keys to select REL. CELL CONSTANT; use the
key
to confirm the selection.
✱
When the measurement is stable, press the
key.
✱
Use the
and
keys to correct the indicated uncompensated
conductivity to match the known value for the reference solution.
✱
Press .
The relative cell constant calculated by the device is displayed.
✱
To accept the relative cell constant that has been determined -> press the
key for at least 3 seconds or
to reject the value -> press the
key.
The transmitter is in the calibration menu.
✱
Press the
key;
The transmitter is now in the measurement mode, and shows the
compensated conductivity of the reference solution.
11.3 Calibrating the temp. coefficient of the sample solution
11.3.1 Linear temperature coefficient (ALPHA)
The conductivity of any sample solution will change according to its individual
temperature coefficient.
We therefore recommend carrying out a calibration of the temperature
coefficient.
Requirements
- The supply voltage for the device must be present.
see Chapter 7 "Installation", Page 25ff.
PGM
PGM
PGM
PGM
EXIT
EXIT