Rosemount 5401, Справочное руководство

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Reference Manual
00809-0100-4026, Rev FA
July 2009
3-3
Rosemount 5400 Series
MOUNTING
CONSIDERATIONS
Before installing a Rosemount 5400 Series transmitter, consider specific
mounting requirements, vessel, and process characteristics.
Mounting Location
For optimal performance, the transmitter should be installed in locations with
a clear and unobstructed view of the level surface (A):
• Filling inlets creating turbulence (B), and stationary metallic objects with
horizontal surfaces (C) should be kept outside the signal beam – see
page 3-10 for beamwidth information
• Agitators with large horizontal blades may reduce the performance of
the transmitter, so install the transmitter in a location where this effect is
minimized. Vertical or slanted blades are often invisible to radar, but
create turbulence (D)
• Do not install the transmitter in the center of the tank (E)
• Because of circular polarization, there is no clearance distance
requirement from the tank wall if it is flat and free of obstructions such
as heating coils and ladders (F). Usually, the optimal location is 1/4 of
the diameter from the tank wall
Figure 3-1. It is important to
consider the proper mounting
position.
• The antenna is normally aligned vertically
(D) (A) (E) (B) (F) (C)