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Reference Manual
00809-0100-4026, Rev HA
Section 3: Mechanical Installation
November 2014
Mechanical Installation
3.3.8 Beamwidth
The following recommendations should be considered when mounting the transmitter:
The transmitter should be mounted with as few internal structures as possible within
the beam angle
The flat tank wall can be located within the antenna beam angle if there is a minimum
distance from the transmitter to the tank wall (see Figure 3-15 for preferred
installation)
Figure 3-16. Beamwidth at Various Distances from the Flange
Table 3-5. Beamwidth for the Rosemount 5402 Model (in ft [m])
Distance
Antenna
2 in. (DN 50) cone/
process seal
3 in. (DN 80) cone/
process seal
4 in. (DN 100) cone/
process seal
16 ft (5 m) 4.9 (1.5) 3.3 (1.0) 3.3 (1.0)
33 ft (10 m) 9.8 (3.0) 6.6 (2.0) 4.9 (1.5)
49 ft (15 m) 14.8 (4.5) 9.8 (3.0) 8.2 (2.5)
66 ft (20 m) 19.7 (6.0) 13.1 (4.0) 9.8 (3.0)
Distance
5401
(low frequency)
5402
(high frequency)
16 ft (5 m)
33 ft (10 m)
49 ft (15 m)
66 ft (20 m)
Beamwidth
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