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Diagnostics and troubleshooting
9.5 Treatment of measurement errors
Code
Text message
M511
Inconsistent software
configuration
9.5
Treatment of measurement errors
The tables below give typical examples of application-related measurement errors.
The images in column " Error description show the actual level as a dashed line and
the output level as a solid line.
1
2
Note
If the output level is constant, the cause could also be the fault setting of the current
output to " Hold value.
If the level is too low, the reason could be a line resistance that is too high
Fault description
Measured value shows a
too low or too high level
Measured value jumps
towards 100 %
34
Cause
A software unit requires a software
update
Real level
Level displayed by the transmitter
Cause
Min./max. adjustment not correct
Incorrect linearization curve
Due to the process, the amplitude
of the level echo sinks
A auto false echo suppression was
not carried out
Amplitude or position of a
false signal has changed (e.g.
condensation, buildup); auto
false echo suppression no longer
matches actual conditions
Rectification
Carry out software update
Rectification
Adapt min./max. adjustment
Adapt linearization curve
Carry out a auto false echo
suppression
Determine the reason for the
changed false signals, carry out
auto false echo suppression, e.g.
with condensation.
Operating Instructions, 08/2020, A5E50352144
SITRANS LR140
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