Siemens Sitrans LR200 Instruction Manual page 174

Waveguide Antenna
Notes:
• You can connect a maximum of two waveguides
together.
• This option is recommended only for clean liquids,
and only on vessels without an agitator, with no
turbulence.
• Horizontal stress on this antenna must be avoided,
otherwise mechanical support may be required.
• Process temperature and pressure capabilities are
dependent upon information on the process device
tag. The reference drawing listed on the tag can be
downloaded from our website at:
www.siemens.com/LR200.
• Recommended for products with a dK lower than 3.
• See Propagation Factor (2.8.3.) on page 86 for the
related propagation factor.
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.
Page 166 SITRANS LR200 (HART) – INSTRUCTION MANUAL
minimum
80 mm (3")
If horn diameter is too large
for the nozzle opening, insert
it from inside the vessel.
7ML19985JP02
vent
hole