Rosemount 5401, Reference Manual

Page: 34 / 180

Reference Manual
00809-0100-4026, Rev FA
July 2009
Rosemount 5400 Series
3-10
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 3-10 for preferred installation)
Figure 3-11. Beamwidth at
various distances from the
flange.
Table 3-5. Beamwidth for the
Rosemount 5402 model.
Table 3-6. Beamwidth for the
Rosemount 5401 model.
Dist
an
ce
5401
(low frequency) 5402
(high frequency)
16 ft (5 m)
33 ft (10 m)
49 ft (15 m)
66 ft (20 m)
Beamwidth
Distance
Antenna
2 in. (DN 50) Cone/
Process Seal 3 in. (DN 80) Cone/
Process Seal 4 in. (DN 100) Cone/
Process Seal
Beamwidth, ft (m)
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
Antenna
4 in. (DN 100) Cone
/Rod
6 in. (DN 150) Cone 8 in. (DN 200) Cone
Beamwidth, ft (m)
16 ft (5 m) 9.8 (3..0) 6.6 (2.0) 4.9 (1.5)
33 ft (10 m) 21.3 (6.5) 13.1 (4.0) 9.8 (3.0)
49 ft (15 m) 32.8 (10) 19.7 (6.0) 14.8 (4.5)
66 ft (20 m) 41 (12.5) 26.2 (8.0) 19.7 (6.0)