Endress+Hauser Liquiline CM44P - Page 152

Diagnostics and troubleshooting Liquiline CM44P
152 Endress+Hauser
No. Message Factory settings Sensor
type
Tests or remedial action
S
1)
D
2)
F
3)
198 Operating time M On Off C Operating hours > 150 °C, measurement
can still take place
1. Replace sensor.
2. Change monitoring limit.
3. Disable monitoring.
199 Operating time M On Off All except
U, Phot
Total operating hours
215 Simulation active C On Off All except
Phot
Simulation active
End simulation by changing to measuring
mode.
408 Calibration aborted M Off Off P, C, O, I,
DI, Phot
Calibration aborted
500 Sensor calibration M On Off All Calibration aborted, main measured
value varies
Reasons: sensor too old, sensor
occasionally dry, calibration value not
constant
1. Check sensor.
2. Check calibration solution.
501 Sensor calibration M On Off All except
U, Phot
Calibration aborted, temperature
measured value varies
Reasons: sensor too old, sensor
occasionally dry, temperature of
calibration solution not constant
1. Check sensor.
2. Regulate calibration solution
temperature.
505 Sensor calibration M On Off P, O, I, DI Max. zero point warning, measurement
can still take place
Possible reasons: sensor old or defective,
reference blocked, calibration solution
too old or contaminated
1. Check or replace sensor.
2. Check or replace calibration
solution.
3. Repeat calibration.
507 Sensor calibration M On Off P, O, I, DI Min. zero point warning, measurement
can still take place
Possible reasons: sensor old or defective,
reference blocked, calibration solution
too old or contaminated
1. Check or replace sensor.
2. Check or replace calibration
solution.
3. Repeat calibration.