Beam Width And Beam Angle - Emerson Rosemount 5408 Reference Manual

Reference Manual
00809-0100-4408, Rev BA
3.3.6

Beam width and beam angle

The transmitter should be mounted with as few internal structures as possible within the signal beam.
Refer to
Figure 3-5. Beam Angle and Beam Width

W
Table 3-3. Beam Angle
Antenna size
2-in. (DN50) cone/process seal
3-in. (DN80) cone/process seal
4-in. (DN100) cone/process seal
8-in. (DN200) parabolic
Table 3-4. Beam Width, ft. (m)
Distance (D)
16 (5)
33 (10)
49 (15)
66 (20)
82 (25)
98 (30)
131 (40)
Mechanical Installation
Table 3-3 for beam angle and
D
2-in. cone/
process seal
5.2 (1.6)
10.4 (3.2)
15.6 (4.8)
20.8 (6.3)
26.0 (7.9)
31.2 (9.5)
41.6 (12.7)
Table 3-4 for beam width at different distances.
Beam angle (α)
18°
14°
10°
4.5°
Beam width (W)
3-in. cone/
process seal
4.0 (1.2)
8.1 (2.5)
12.1 (3.7)
16.1 (4.9)
20.1 (6.1)
24.2 (7.4)
32.2 (9.8)
Mechanical Installation
November 2017
4-in. cone/ Parabolic
process seal
2.9 (0.9) 1.3 (0.4)
5.7 (1.8) 2.6 (0.8)
8.6 (2.6) 3.9 (1.2)
11.5 (3.5) 5.2 (1.6)
14.3 (4.4) 6.4 (2.0)
17.2 (5.3) 7.7 (2.4)
23.0 (7.0) 10.3 (3.1)
15