Siemens SITRANS LR150 - Treatment of Measurement Errors

Diagnostics and troubleshooting
12.5Treatment of measurement errors
Code
Text message
Cause Rectification DevSpec
State in CMD 48
M510
No
communication
with the main
controller
Communication between main
electronics and display module
disturbed
Check the connection cable to
the display
Send transmitter for repair
Bit10 of
Byte14…24
M511
Inconsistent
software
configuration
A software unit requires a
software update
Carry out software update Bit11 of
Byte14…24
12.5 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
Real level
2
Level displayed by the transmitter
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 Cause Rectification
Min./max. adjustment not correct Adapt min./max. adjustmentMeasured value shows a
too low or too high level
Incorrect linearization curve Adapt linearization curve
Measured value jumps
towards 100%
Due to the process, the amplitude
of the level echo sinks
A auto false echo suppression was
not carried out
Carry out a auto false echo
suppression
80
SITRANS LR150
Operating Instructions, 08/2020, A5E50352155