Balluff BMD 1L K Série Notice D'utilisation page 179

Measurement error with constant level
Fault description
1. Measured value
shows a too low or too
high level
2. Measured value
Fault description
3. Measured value re-
mains in the area of the
4. Measured value re-
mains momentarily
-
ing and then jumps to
the correct level
5. Measured value
jumps sporadically to
6. Measured value
0 m distance
Error pattern Reason
•
Min./max. adjustment not
correct
•
Incorrect linearisation curve
•
Running time error (small meas-
•
Due to the process, the
amplitude of the product echo
decreases
•
A false signal suppression was
not carried out
•
Amplitude or position of a
false signal has changed (e.g.
buildup); false signal suppres-
sion no longer matches
Error pattern Reason
•
Echo from the probe end larger
than the product echo, for exam-
oil-based, solvents, etc.
•
Turbulence on the product
0
time
•
Changing condensation or
contamination on the probe
0 time
•
Level echo is no longer detected
in the close range due to false
signals in the close range. The
tion mode. The max. level (0 m
distance) as well as the status
are outputted.
10 Diagnostics and servicing
•
Adapt min./max. adjustment
•
Adapt linearisation curve
•
Repeat setup
•
Carry out a false signal suppres-
sion
•
Determine the reason for the
changed false signals, carry out
false signal suppression, e.g.
with buildup
•
Check parameter "Medium"
and "Vessel height", adapt if
< 2.5 necessary
r
•
Check parameters, change if
necessary, e.g. in dosing vessel,
reactor
•
Carry out a false signal suppres-
sion
•
Eliminate false signals in the
close range
•
Check installation conditions
•
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