Orientation In A Vessel With Obstructions; Mounting On A Stillpipe Or Bypass Pipe - Siemens Sitrans LR200 Instruction Manual

Orientation in a vessel with obstructions

Polarization reference point

Mounting on a Stillpipe or Bypass Pipe

A stillpipe or bypass is used for products with a low dK
turbulent conditions exist. It can also be used to provide optimum signal conditions on
foaming materials.
Stillpipe or Bypass Pipe requirements
• The pipe diameter must be matched with the horn size. Use the largest horn size
that will fit the stillpipe/bypass pipe (see
• Suitable pipe diameters:
Not recommended:
• One continuous length of metallic pipe is preferred, without joints
• Joints (if unavoidable) must be machined to ± 0.25 mm (± 0.010") and must have a
welded connecting sleeve on the outside.
• Bypass vent
1)
Dielectric constant of material measured
See
2)
Bad joints create reflections.
3)
To equalize pressure and keep the liquid level in the bypass constant with the liquid
level in the vessel.
Page 18 SITRANS LR200 (HART) – INSTRUCTION MANUAL
polarization
axis
polarization reference point
For best results on a vessel with obstructions, or a stillpipe with
openings, orient the front or back of the device toward the
Mounting on a Stillpipe or Bypass Pipe
obstructions (see
page 18 for an illustration).
display
40 mm (1.5") to 100 mm (4").
(152.4 mm/ 6" or 203.2 mm/ 8")
required at the upper end of the bypass
1)
, or when vortex or extremely
Flanged Horn dimensions
on page 9.
on
on page 154).
2)
.
3)
7ML19985JP02