JUMO 202610.0, Operating Instructions Manual, Page: 44 / 68

10 Calibration
44
Calibration
unsuccessful If no stable value is produced within 15 minutes after pressing the key, the
two-wire transmitter for dissolved oxygen will remain in the service mode. The
output current will remain at the value defined as the service current (factory-
set to 18 mA).
Basic version:
✱
Press key briefly (about 1 sec). The old calibration data will be restored
and the two-wire transmitter for dissolved oxygen will again go into the
measurement mode (with the old calibration data).
Standard and maximum versions:
The LC display signals ERROR.
✱
Keep the pressed down. The old calibration data will be restored and
the two-wire transmitter for dissolved oxygen will go into the measurement
mode again.
✱
Restart the calibration by pressing the key. Keep the key pressed down
for more than 2 seconds. The output signal will be set to the value (normally
18 mA) that has been defined as the service current.
✱
After repeated unsuccessful calibration, the sensor module will have to be
replaced.
➩
Chapter 12.2 “Replacing the sensor module”, page 59.
Cancel
calibration Only possible on the standard and maximum versions.
✱
Press the EXIT key.
CAL
CAL
EXIT
CAL