LUC-M** with HART/4 mA ... 20 mA and PROFIBUS PA
Trouble shooting
D
O
C
T
-08
43A
01/
2010
1855
72
68
Error
Output
Possible cause
Elimination
On filling/
emptying the
measured value
drops
Multiple echoes
yes
→
1.
Check "tank shape" (002),
e. g. "dome ceiling" or
"horizontal cyl."
2.
In the "blocking distance"
(059) range there is no echo
evaluation
3.
If possible, do not select a
central installation position
4.
Possible user stilling well/echo
guide pipe
E 641 (echo loss)
Level echo is too
weak.
Possible causes:
-
Uneven surface
through filling/
emptying
-
Active agitator
-
Foam
-
Sensor not
aligned parallel
to product
surface
yes
→
1.
Check application parameters
(002), (003) and (004)
2.
If necessary, select a different
installation position and/or a
larger sensor
3.
Align the sensor parallel to the
product surface (particularly
for bulk solids applications)
expected
actual
100
%
0
%
t
¡
expected
actual
100
%
E 641
0
%
t
¡
Summary of Contents for LUC-M Series
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