Micropilot M FMR 240 with PROFIBUS PA
Trouble-shooting
E Hauser
85
Error
Output
Possible cause
Remedy
If the surface is
not calm (e.g. fil-
ling, emptying,
agitator run-
ning), the measu-
red value jumps
sporadically to a
higher level
L00-FMR2xxxx-19-00-00-en-015
L00-FMR2xxxx-19-00-00-en-016
Signal is weakened
by the rough surface
– the interference
echoes are someti-
mes stronger
1.
Carry out tank mapping
→
basic setup
2.
Set the process cond. (004)
to "turb. surface" or "agitator"
3.
Increase the output dam-
ping (058)
4.
Optimise the orientation
(see Page 86)
5.
If necessary, select a better
mounting position and/or lar-
ger antenna (see Page 14)
During filling/
emptying the
measured value
jumps ownwards
L00-FMR2xxxx-19-00-00-en-017
Multiple echoes
yes
→
1.
Check the tank shape (002),
e.g. "dome ceiling" or "hori-
zontal cyl"
2.
In the range of the blocking
dist. (059) there is no echo
evaluation
→
Adapt the
value
3.
If possible, do not select
central installation position
(see Page 14)
4.
Perhaps use a stilling well
(see Page 21)
E 641 (loss of
echo)
L00-FMR2xxxx-19-00-00-en-018
Level echo is too
weak.
Possible causes:
•
Rough surface
due to filling/ emp-
tying
•
Agitator running
•
Foam
yes
→
1.
Check application arame-
ters (002), (003) and (004)
2.
Optimise alignment
(see Page 86)
3.
If necessary, select a better
installation position and/or
larger antenna (see Page 14)
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.
100%
0%
t
→
actual
expected
100%
0%
t
→
actual
expected
100%
0%
t
→
actual
expected
100%
E 641
0%
t
→
eingetreten
erwartet