Endress+Hauser Liquiline CM44P - Page 155

Liquiline CM44P Diagnostics and troubleshooting
Endress+Hauser 155
No. Message Factory settings Sensor
type
Tests or remedial action
S
1)
D
2)
F
3)
556 Temperature low S On On C Process temperature above/below
compensation table
• Process value outside specification
• Table incomplete
‣
Extend table.
557 Temperature high S On On C
558 Conductivity low S On On C Process conductivity above/below
compensation table
• Process value outside specification
• Table incomplete
‣
Extend table.
559 Conductivity high S On On C
560 Conduc.
compensation
S On On C Conductivity compensation above/below
compensation table
• Process value outside specification
• Table incomplete
‣
Extend table.
561 Conduc.
compensation
S On On C
720 Membrane change M On Off I Membrane cap must be replaced
1. Replace membrane cap.
2. Reset timer.
722 Sensor reference F On On P Alarm: Reference membrane impedance
too low.
1. Check or replace sensor.
2. Check/correct reference limit
value.
723 Sensor reference M On Off I Warning: Reference membrane
impedance too low.
Can continue measuring until the alarm
occurs.
1. Check or replace sensor.
2. Check/correct reference limit
value.
724 Sensor reference F On On I Alarm: Reference membrane impedance
too high.
1. Check or replace sensor.
2. Check/correct reference limit
value.
725 Sensor reference M On Off I Warning: Reference membrane
impedance too high.
Can continue measuring until the alarm
occurs.
1. Check or replace sensor.
2. Check/correct reference limit
value.
734 Calibration quality M On Off O (opt.) Warning: The calibration quality index
indicates a substantial change since the
last calibration.
Measurement can still take place.
1. Repeat calibration.
2. Check the sensor and replace if
necessary.