Parametrization Errors - Endress+Hauser Levelflex FMP53 Operating Instructions Manual

Diagnostics and troubleshooting
66
12.1.2

Parametrization errors

Parametrization errors for level measurements
Problem
Measured value is incorrect
No change of measured value
on filling/emptying
Echo lost diagnostic
message appears after the
supply voltage is switched on.
Device displays a level when
the tank is empty.
Wrong slope of the level over
the entire measuring range
Possible cause
If measured distance (Setup
→ Distance) matches the real
distance:
Calibration error
If measured distance (Setup
→ Distance) does not match the real
distance:
An interference echo is present.
An interference echo is present.
Buildup at the probe.
Error in the echo tracking.
Echo threshold too high.
Level echo suppressed.
Incorrect probe length
Interference echo
Wrong tank type selected.
Levelflex FMP53 PROFIBUS PA
Remedy
• Check the Empty calibration
parameter (→  103) and correct if
necessary.
• Check the Full calibration parameter
(→  103) and correct if necessary.
• Check the linearization and correct if
necessary (Linearization submenu
(→  119)).
Carry out mapping (Confirm distance
parameter (→  106)).
Carry out mapping (Confirm distance
parameter (→  106)).
Clean the probe.
Deactivate echo tracking (Expert
→ Sensor → Echo tracking → Evaluation
mode = History off).
Check the Medium group parameter
(→  102).
If necessary, select a more detailed
setting with the Medium property
parameter (→  113).
Delete the map and record it again if
necessary (Record map parameter
(→  107)).
Perform probe length correction
(Confirm probe length parameter
(→  134)).
Carry out mapping over the entire probe
length when the tank is empty (Confirm
distance parameter (→  106)).
Select the correct Tank type parameter
(→  101).
Endress+Hauser