Horn Location On Nozzles; Mounting: Stillpipe Or Bypass (Sidepipe); Pipe Requirements - Siemens SITRANS LR250 Instruction Manual

Horn Location on Nozzles

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Mounting: Stillpipe or Bypass (Sidepipe)

This mounting arrangement is an alternative to the waveguide antenna option. It is used
for products with an ε
also be used to provide optimum signal conditions on foaming materials.

Pipe requirements

Diameter
Suitable pipe diameters are 50 mm (2") to 100 mm (4").
Smoothness
One continuous length of metallic pipe is preferred, without joints. If joints are
unavoidable, you must machine them to close tolerances (± 0.25 mm [± 0.010"]) and weld
a connecting sleeve on the outside.
Mounting on a stillpipe
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Page 16 SITRANS LR250 (HART) – INSTRUCTION MANUAL
10 mm (0.4")
less than 3 or for extremely turbulent or vortex conditions. It can
r
Mounting on a bypass
align
display
window
with
stillpipe
slots
The end of the horn should protrude a
minimum of 10 mm (0.4") to avoid inter-
ference with the nozzle
align display
window with
vents
optimum
diameter
80 mm (3")
7ML19985JE01