Levelflex FMP51, FMP52, FMP54 Trouble shooting
Endress+Hauser 85
Error Possible cause Remedial action
Interference echo Carry out mapping over entire probe when
the tank is empty (® ä 124).
Wrong slope of the level in the
entire measuring range
Wrong tank type selected. Set the Tank type parameter correctly
(® ä 117).
Parametrization errors for interface measurements
Error Possible cause Remedial action
When "flooded" is selected in
"Tank level", the measured
interface level jumps to higher
values during draining
operations.
The total level is detected outside the
upper blocking distance.
Increase the blocking distance (® ä 133).
Select "Tank level" = "Partially filled"
(® ä 117).
When "Partially filled" is
selected in "Tank level", the
measured total level jumps to
lower values during filling
operations.
The total level runs into the upper
blocking distance.
Reduce blocking distance (® ä 133).
Wrong slope of the measured
interface level
Wrong dielectric constant (DC value). Enter the correct dielectric constant (DC
value) of the upper medium (® ä 119).
The measured values for the
interface and the total level are
identical
Echo threshold for the total level too
high due to a wrong dielectric constant.
Enter the correct dielectric constant (DC
value) of the upper medium (® ä 119).
If the interface layers are thin,
the total level jumps to the
interface level.
The thickness of the upper medium is
less than 60 mm (2.4 in).
Interface measurement is only possible if
the thickness of the interface is greater than
60 mm (2.4 in).
The measured interface layer
jumps.
Emulsion layer present. Emulsion layers affect the measurement.
Please contact Endress+Hauser.
11.2 Diagnostic information on local display
11.2.1
Diagnostic message
Faults detected by the self-monitoring system of the measuring device are displayed as a
diagnostic message in alternation with the measured value display.
Measured value display in alarm condition Diagnostic message
S441
1
2
4
3
X X X X X X XX
X X X X X X X XX X
2
S
S
mA
i
20.50
5
Curr.output1
Menu
A0013939-EN
1
2
3
4
5
Status signal
Status symbol (symbol for event level)
Status symbol with diagnostics event
Event text
Operating elements