Diagnostics, troubleshooting CM42-MAA101EBE00
20 Endress+Hauser
172 Operating time alarm M
The operating time for the sensor which you specified has been reached.
Replace the sensor to ensure the operability of the measuring point. If a
new sensor is used, the counters are reset to the new sensor data.
173 Oper.time >80°C alarm M
The sensor has reached the operating time under extreme conditions
which you specified. Replace the sensor to ensure the operability of the
measuring point. If a new sensor is used, the counters are reset to the
new sensor data.
174 Oper.time >100°C alarm M
175 Oper.time <-300mV alarm M
176 Oper.time >300mV alarm M
177 Delta slope alarm M
Sensor aged. Replace the sensor.
178 Delta zero alarm M
180 Cal. expired alarm M
The operated hours counter has reached its limit. Perform a calibration.
This resets the counter.
181 No. steril. alarm M
The number of sterilizations which you specified has been reached.
Replace the sensor.
182 Operating time warning M
The operating time for the sensor which you specified has almost been
reached. Prepare to replace the sensor.
183 Oper.time >80°C warn M
The sensor will soon have reached the operating time under extreme
conditions which you specified. Prepare to replace the sensor.
184 Oper.time >100°C warn M
185 Oper.time <-300mV warn M
186 Oper.time >300mV warn M
190 Cal. expired warning M The operated hours counter is reaching its limit. Plan a calibration.
191 No. steril. warning M The number of sterilizations which you specified will be reached shortly.
203 Wrong transmitter type F
Use a sensor module that suits the software.
(Software version 10... for pH, 13... for conductivity, 20... for oxygen)
215 Simulation active C Active corresponding to your settings
218 Current output not available F Contact the Service Team!
219 Power supply bad C
Interference amplitude of power supply too high
– Incorrect power supply or unshielded cables used
– Connect the device to a clean power supply.
– Make sure the cable is grounded correctly.
– The error is not rectified until the interference amplitude is gone or if
it is in the frequency range for HART communication.
238 Delta slope alarm C
Sensor aged. Replace the sensor.
239 Delta zero alarm C
318 Glass imp. too high alarm M
Sensor check system warning
– Check glass electrode for breakage and hairline cracks
– Check medium temperature
319 Ref. imp. too high alarm M
Sensor check system warning
– Check reference electrode for contamination and damage
– Clean reference electrode
No. Display text Cat. Tests and/or remedial measures
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