Mounting: Stillpipe Or Sidepipe - Siemens SITRANS LR200 Instruction Manual

Mounting: Stillpipe or Sidepipe

This is an alternative to the waveguide antenna option, used for products with an ε
than 3 or for extremely turbulent or vortex conditions. This mounting arrangement can
also be used to provide optimum signal conditions on foaming materials.
Suitable pipe diameters are 50 mm (2") to 250 mm (10"). Use a horn antenna for
preference, but a rod antenna can also be used.
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.
Propagation Factor
See
Ensure there is a vent at the upper end of the side pipe to equalize pressure and keep the
liquid-level in the pipe constant with the liquid-level in the vessel.
7ML19985HP01 SITRANS LR 200 (PROFIBUS PA) – INSTRUCTION MANUAL
vent hole
on page 97 for the related propagation factor.
less
r
Suitable pipe diameters are
50 mm (2") to 250 mm (10").
A horn antenna is
preferable, but a rod
antenna can be used.
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