Endress+Hauser Liquiline CM44P - Page 154

Diagnostics and troubleshooting Liquiline CM44P
154 Endress+Hauser
No. Message Factory settings Sensor
type
Tests or remedial action
S
1)
D
2)
F
3)
518 Sensor calibration M On Off P, O, I, DI Delta slope 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.
520 Sensor calibration M On Off P, O, I, DI Delta 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.
522 Sensor calibration M On Off P (ISFET) Delta operating 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.
534 Electrolyte warning M On Off DI Electrolyte consumption warning
The limit set for the electrolyte capacity
has been reached.
1. Replace electrolyte.
2. Reset consumption counter.
3. Replace sensor.
535 Sensor check M On Off O (amp.),
DI
Specified number of cap calibrations is
reached
Measurement can still take place.
‣
Replace sensor cap.
550 Process
temperature
S On On C Process temperature above/below
concentration table
• Process value outside specification
• Table incomplete
‣
Extend table.
551 Process
temperature
S On On C
552 Conductivity low S On On C Process concentration above/below
concentration table
• Process value outside specification
• Table incomplete
‣
Extend table.
553 Conductivity high S On On C
554 Concentration low S On On C Process concentration above/below
concentration table
• Process value outside specification
• Table incomplete
‣
Extend table.
555 Concentration high S On On C