1-Point Calibration - JUMO 202550 Operating Instructions Manual

10 pH indicator
Calibration
with / without
"frozen process
value output"
Select
calibration
procedure

10.4 1-point calibration

You will need
Initial condition
30
Press the key (confirmation)
PGM
Press the key (return to the measurement mode).
EXIT
"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 electrode has been installed once more, the
again. The process value output is now coupled to the display again
The factory setting is: "Calibration without frozen process value
output".
Press the key repeatedly, until "C211" appears in the lower display.
PGM
Use the and
Calibration procedure
1-point calibration, process value output not frozen
1-point calibration, process value output frozen
2-point calibration, process value output not frozen
2-point calibration, process value output frozen
Press the key (confirmation)
PGM
Press the key (return to the measurement mode).
EXIT
- a buffer solution with a pH value which roughly corresponds to the medium
measured later.
- a thermometer, if you want to use manual temperature compensation.
- a Pt100 or Pt1000 temperature probe, if you require automatic temperature
compensation.
A pH combination electrode connected to the 2-wire transmitter that is
attached to the dTRANS Az 01, as well as a Pt100 or Pt1000 temperature
probe (if required),
Chapter 10.1 "pH measurement circuit", page 28ff.
Select calibration procedure,
Chapter 10.3 "Preparation", page 29ff.
The operating level is unlocked,
"Unlocking the levels", page 27, (code word 0110)
keys to set the configuration parameter:
key must be pressed
PGM
.
X X 0 X
0
1
2
3