Diagnostics and troubleshooting
9.6 Return procedure
Fault description
Cause
Rectification
After eliminating the false signals,
the auto false echo suppression
must be deleted. Carry out a new
auto false echo suppression
Measured value jumps
sporadically towards
100 % during emptying
Changing condensation or
contamination on the antenna
Carry out auto false echo
suppression or increase auto false
echo suppression in the close range
by editing
Various echoes from an uneven
medium surface, e.g. an extraction
funnel
Check parameter "Material Type"
and adapt, if necessary
Measured value fluctuates
around 10 … 20 %
Reflections from the medium
surface via the vessel wall
(deflection)
Optimize installation position and
transmitter orientation
9.6
Return procedure
Enclose the delivery note, the return goods delivery note and the decontamination
declaration in a clear plastic pouch and attach it firmly to the outside of the
packaging. Any devices/replacement parts which are returned without a
decontamination declaration will be cleaned at your expense before further
processing.
Required forms:
• Delivery note
• Return goods delivery note with the following information: https://
www.siemens.com/processinstrumentation/returngoodsnote
• Product (item description)
• Number of returned devices/replacements parts
• Reason for returning the item(s)
38
SITRANS LR140
Operating Instructions, 08/2020,
A5E50352144
