JUMO 202550 Operating Instructions Manual page 54

18 Conductivity indicator
Calibration
with / without
"frozen process
value output"
Select
calibration
procedure
52
"Freezing" the process value output means that, during calibration, the output
signal is held at the value that was produced immediately before calibration
started. This is to avoid an uncontrolled reaction from any PLC that may be
connected to the output of the indicator/controller.
While the process value output is frozen, the lower display shows "donE" after
the last calibration step, and the upper display shows the latest measurement.
The process value output remains unchanged!
After the conductivity cell has been installed once more, the
pressed. The process value output is now coupled to the display again
The factory setting is:
"Calibration without frozen process value output".
The instrument is in the measurement mode.
Unlock the configuration level, if necessary,
"Unlocking the levels", page 27 (code word 0300).
Press the key twice, for more than 2 seconds (but less than 4 seconds),
PGM
to access the configuration level.
The lower display shows "C111".
Press the key repeatedly, until "C211" appears in the lower display.
PGM
Use the and
Calibration procedure
Calibration of the cell constant, process value output not frozen
Calibration of the cell constant, process value output frozen
Determination of the temperature coefficient, process value
output not frozen
Determination of the temperature coefficient, process value
output frozen
Press the key (confirmation)
PGM
Press the key (return to the measurement mode).
EXIT
keys to set the configuration parameter:
key must be
PGM
.
X X 0 X
0
1
2
3