Sitrans Lr400; Structure - Siemens Sitrans LR400 Instruction Manual

SITRANS LR400

SITRANS LR400 is a long-range FMCW radar level transmitter. It is suitable for use in
liquids and solids, for low dielectric liquids, and high pressure applications or applications
with extreme dust. This version also incorporates a purging option for sticky solids
applications. The narrow antenna beam results in a sharp emission cone, which makes
SITRANS LR400 quite insensitive to vessel interferences.
This manual applies to the 7ML5421 version only. Please see Instruction
Note:
Manual 7ML19985JC02 for information about the SITRANS LR400, 7ML5420
version.

Structure

housing
connection
cover
intermediate
flange
device tag
process flange
threaded ring
The terminals for the power cable and the signal cable are behind the connection cover
on the left side of the housing. The signal cable must be fed in from the right through the
cable glands.
The end of the antenna must reach inside the vessel through the vessel nozzle (see
page 16).
If the device is rotated, return the orientation of the housing to its previous position with
reference to the enclosure, to ensure similar performance.
7ML19985FH06 SITRANS LR400 (7ML5421) – INSTRUCTION MANUAL
cable gland
electronics cover
display module
infra-red hand
programmer
(ordered
separately)
horn antenna
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