Endress+Hauser Liquicap M FMI51 HART - Possible Measuring Errors; Measured Value Is Incorrect

Diagnostics and troubleshooting Liquicap M FMI51 HART
78 Endress+Hauser
Warning codes
• W103, W153
Initializing - Please wait
- if the message does not disappear after a few seconds replace the electronics
• W153
Initializing
- if the message does not disappear after a few seconds replace the electronics
• W 425
Warning insulation defective
- check insulation
• W 429
Proof test active
- wait until the proof test is completed
• W 1601
Linearization curve not monotone for level
- re-enter linearization
• W 1611
Level linearization points
- enter additional linearization points
• W 1662
The temperature at electronic insert too high (max. temp. at sensor exceeded)
- lower ambient temperature by suitable measures
• W 430
Data of probe and electronic insert not compatible
- check probe, perform a total reset
• W 1671
Linearization table entered incorrectly
- re-adjust table
• W 1681
Current outside measuring range
- perform basic setup and check linearization
• W 1683
Current turn down calibration faulty
- repeat calibration
• W 1801
Level simulation switched on
- switch off level simulation
• W 1802
Simulation switched on
- switch off simulation
• W 1806
The current output is in simulation mode
- set the current output to normal mode
• W 511
The electronic insert has lost calibration data
- contact Endress+Hauser-Service
If none of the proposed remedial measures achieves the desired result, perform the
reset →  43
8.3 Possible measuring errors
8.3.1 Measured value is incorrect
If the measured values are incorrect, follow this procedure:
1. Verify empty and full calibration.
2. Clean the probe.