41
14 Redox indicator
Select
calibration
procedure
✱
Press the
key repeatedly, until “C211” appears in the lower display.
Use the
and
keys to set the configuration code:
1
select display unit [mV] in C111!
2
select display unit [%] in C111!
✱
Press the
key (confirmation)
✱
Press the
key (return to the measurement mode).
14.3 1-point calibration
You will need
- a buffer solution (measurement solution) with a redox voltage which roughly
corresponds to the medium measured later.
Initial condition
A metal combination electrode is connected to a 2-wire transmitter for redox
voltage, that in its turn is attached to a JUMO dTRANS Az 01,
Chapter 14.1 “Redox measurement circuit”, page 39.
The calibration procedure has been selected,
Chapter 14.2 “Calibration”, page 39.
The operating level is unlocked,
Chapter 9.5 “Programming”, page 27, (code word 0110)
The instrument is in the measurement mode,
Chapter 9.2 “Principle of operation”, page 24.
Calibration
✱
Immerse the metal combination electrode in the buffer solution
✱
Press the
+
(Cal) keys
✱
The lower display shows “Cal1” with the decimal point flashing.
✱
Using the
or
keys, set the displayed value to the value of the
reference buffer solution.
When the redox voltage has stabilized, the calibration procedure is
complete.
✱
Press the
key.
The instrument stores the new zero.
The instrument is in the measurement mode again.
Calibration procedure
X
X
0
X
1-point calibration, process value output not frozen
0
1
1-point calibration, process value output frozen
1
1
2-point calibration, process value output not frozen
2
2
2-point calibration, process value output frozen
3
2
PGM
PGM
EXIT
If, on completion of calibration, the instrument shows “Err” in the
temperature display,
Chapter 34.1 “Messages”, page 101.
PGM
PGM
