Cerabar M, Deltapilot M
Diagnostics and troubleshooting
Hauser
63
Diagnostic event
Cause
Remedial measure
Code
Description
M431 Calibration
The calibration performed would cause the nominal sensor range to be
exceeded or undershot.
• Check the measuring range
• Check the position adjustment
• Check the setting
M434 Scaling
• Values for calibration (e.g. lower range value and upper range value)
are too close together.
• Lower range value and/or upper range value exceed or fall below the
sensor range limits.
• The sensor was replaced and the customer-specific configuration
does not suit the sensor.
• Unsuitable download carried out.
• Check the measuring range
• Check the setting
• Contact Hauser Service
M438 Data record
• The supply voltage is disconnected when writing.
• An error occurred when writing.
• Check the setting
• Restart the device
• Replace the electronics module
M803 Current loop
Impedance of the load resistor at the analog output is too high
• Check the wiring and the load at the current
output
• If the current output is not required, switch it
off via the configuration
• Connect the current output to the load
"S" messages
Diagnostic event
Cause
Remedial measure
Code
Description
S110 Working range T • Excess temperature or low temperature present.
• Electromagnetic effects are greater than specifications in the technical data.
• Sensor defective.
• Check the process temperature
• Check the temperature range
S140 Working range P • Overpressure or negative pressure present.
• Electromagnetic effects are greater than specifications in the technical data.
• Sensor defective.
• Check the process pressure
• Check the sensor range
S822 Process temp.
• The temperature measured in the sensor is greater than the upper nominal tempera-
ture of the sensor.
• The temperature measured in the sensor is lower than the lower nominal tempera-
ture of the sensor.
• Check the temperature
• Check the setting
S841 Sensor range
• Overpressure or low pressure present.
• Sensor defective.
• Check the pressure value
• Contact Hauser Service
S971 Calibration
• The current is outside the permitted range from 3.8 to 20.5 mA.
• The present pressure value is outside the configured measuring range (but may be
within the sensor range).
• Check the pressure value
• Check the measuring range
• Check the setting