Location On A Nozzle; Polarization Reference Point - Siemens SITRANS LR250 Instruction Manual

Location on a nozzle

On a nozzle, the horn should protrude a minimum or 100 mm (4") to avoid interference.
A manhole cover is typically a covered nozzle with a diameter 610 mm (24") or greater. To
provide optimum signal conditions on a manhole cover, locate the horn off-center,
typically 100 mm (4") from the side.
shield
GRAPHIC TO BE UPDATED GRAPHIC TO BE UPDATED
For details on other applications, see
Note:
page 109.

Polarization reference point

For best results on a tank with obstructions, or a stillpipe with openings, orient the front
or back of the device toward the obstructions (see
(Sidepipe)
on page 117 for an illustration.)
Page 14 SITRANS LR250 (HART) – INSTRUCTION MANUAL
retaining collar
threaded connection
10 mm
(0.4")
Appendix G: Special Applications
Mounting: Stillpipe or Bypass
polarization
reference point
display
on
7ML19985JE01