Horn With Waveguide Extensions; Nozzle Fabrication - Siemens SITRANS L Operating Instructions Manual

B.2.6

Horn with waveguide extensions

• Recommended for long nozzles with a
small diameter. For example, if the nozzle
is 100 mm (4") in diameter and 460 mm
(18") in length), the rod antenna is not
suitable due to interference from the
nozzle.
• Waveguide extensions are available in
custom lengths.
• The horn must be connected to the
SITRANS LR200 process flange.
B.2.7

Nozzle fabrication

Weld seams must be on the outside of the nozzle. Seams or lips on the inside of the nozzle
may cause erratic readings.
SITRANS LR200 with PROFIBUS PA
Operating Instructions, 07/2021, A5E32337680-AF
B.2 Mounting guidelines
① If horn diameter is too large for the nozzle
opening, insert it from inside the vessel.
Antenna options
175