Trouble-shooting Levelflex M FMP41C with HART/4...20 mA
68 Endress + Hauser
9.3 Application errors
Error Output Possible cause Remedy
A warning or alarm
has occurred.
Depending on the configuration See table of
error messages
(→ ä 66)
1. See table of error messages
(→ ä 66)
Measured value
(00) is incorrect
L00-FMP4xxxx-19-00-00-en-019
Measured distance
(008) OK?
yes
→
1. Check empty calibr. (005) and
full calibr. (006)
2. Check linearisation:
→
level/ullage (040)
→
max. scale (046)
→
diameter vessel (047)
→
Check table
no
↓
An interference echo
may have been
evaluated.
yes
→
1. Carry out tank mapping
→
basic setup
No change off
measured value on
filling/emptying
L00-FMR2xxxx-19-00-00-en-014
Interference echo from
installations, nozzle
or extension on the
probe
1. Carry out tank mapping
→
basic setup
2. If necessary, clean probe
3. If necessary, select better
mounting position
E 641 (loss of
echo) after turn on
the power supply
If the instrument is configured to Hold by loss of
echo the output is set to any value/current.
noise level during the
initialisation phase to
high.
Repeat once more empty calibr.
(005).
Caution!
Before conformation change with
O
or
S
to the edit mode.
20 mA/100%
F m/ft
E m/ft
4 mA/0% t
→
D m/ft (008)
actual
expected
20 mA/100%
4 mA/0% t
→
actual
expected
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