ABB LMT100 Operation Instructions Manual page 51

L M T S E R I E S | M A G N E TO S T R I C T I V E L E V E L T R A N S M I T T E R | O I/ L M T 1 0 0/ 2 0 0 - E N R E V. B
Procedure • Record the current Level Value before the mounting
change
• Change the mounting from Top to Bottom or vicer
versa
• Change the Signal Polarity in the Diagnostic Menu
(typically Standard for bottom mount and Reversed
for top mount)
• If the points were just swapped and kept in the
same position (point 00 became point 01 and vice
versa), the level indicated might deviate between
2-3 mm from what was read in the original
mounting orientation but if the the points were
physically displaced up or down the deviation might
be larger
• Calculate the deviation of the level reading between
previous and new mounting
• There are two ways to handle this:
- Edit parameter <Out> of both points 00 & 01 to
add the determined deviation
- Apply Offset Notice that when the Offset is
used it leaves behind the LRV & URV, which need
to be set again
• End
51