18
Reference Manual
00809-0100-4026, Rev KC
Mechanical Installation
October 2018
Mechanical Installation
3.3 Mounting considerations
Before installing a Rosemount 5400, consider specific mounting requirements, vessel, and process char-
acteristics.
3.3.1 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 “Beam width” on page 32 for more 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. Proper Mounting Position
The antenna is normally aligned vertically.
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