Siemens sitrans LR 400 Instruction Manual page 16

Correct Installation in Mounting Nozzle
The bottom edge of the antenna must project into the vessel to avoid reflective
interference at the wall of the nozzle. Above 6" process nozzle diameter, the antenna does
not need to project beyond the nozzle unless the radiation cone (the extension of the
antenna's angle) touches the nozzle wall.
Installation of SITRANS LR 400 Solids Version
0.38"
(10 mm)
2" horn: 6.5" (165.5 mm)
3" horn: 9.0" (228.3 mm)
4" horn: 11.5" (291.2 mm)
7ML19985JC02 SITRANS LR 400 (Solids) – INSTRUCTION MANUAL
SITRA NS LR 400
10 mm
Easy Aimer ball locking bolts
top clamping plate (upper socket)
bottom clamping plate (lower socket)
30°
max.
customer gasket [recommended
thickness 1.5 to 1.8 mm (0.06 to
0.07")], as required
customer mounting plate
with at least ø 4" (102 mm)
central opening, as required
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