Endress+Hauser Liquiline CM44P - Page 147

Liquiline CM44P Diagnostics and troubleshooting
Endress+Hauser 147
No. Message Factory settings Sensor
type
Tests or remedial action
S
1)
D
2)
F
3)
140 Sensor check F On Off O Sensor range errors
‣
Contact the Service Department.
141 Polarization F On Off C (cond.) Polarization warning
The measured value is corrupted at high
conductivity levels.
‣
Use a sensor with a larger cell
constant.
142 Sensor signal F On Off C Reasons: sensor in air, sensor defective
1. Check installation.
2. Replace sensor.
143 Sensor check F On Off C Sensor self-test error
1. Replace sensor.
2. Contact the Service Department.
144 Conductivity range S Off On C Conductivity outside measuring range
‣
Use a sensor with a suitable cell
constant.
146 Sensor temperature S Off Off C, N, T, S Temperature outside specification
1. Check the temperature.
2. Check electrode system.
3. Replace sensor type.
147 Sensor check F On On C (ind.) Coil transmission current too high
Reasons: transmission coil short-circuit,
inductance too low
1. Replace sensor.
2. Contact the Service Department.
148 Sensor check F On On C (ind.) Reasons: transmission coil interrupted,
inductance too high
1. Replace sensor.
2. Contact the Service Department.
149 Sensor LED F On On T Sensor LED error
1. Replace sensor.
2. Contact the Service Department.
151 Sensor buildup F On On T Buildup, high degree of contamination
1. Clean sensor.
2. Replace sensor.
3. Contact the Service Department.
152 Sensor data invalid M Off Off C (ind.) No calibration data
‣
Perform air set calibration.
153 Sensor defective F On On N, T, S,
Phot
Sensor lamp defective
Reasons: aging, end of operating life,
mechanical disturbance/vibration
1. Replace sensor.
2. Contact the Service Department.
154 Sensor data invalid M Off Off C Factory calibration is used
‣
Calibrate.