Endress+Hauser FOUNDATION Fieldbus Micropilot FMR56 Brief Operating Instructions page 11

Micropilot FMR56, FMR57 FOUNDATION Fieldbus
 1 Relationship between beam angle α, distance D and beam diameter W
The beamwidth diameter W depends on the beam angle α and the distance D.
Antenna size
Beam angle α
Distance (D)
3 m (9.8 ft)
6 m (20 ft)
9 m (30 ft)
12 m (39 ft)
15 m (49 ft)
20 m (66 ft)
25 m (82 ft)
30 m (98 ft)
Endress+Hauser
2 . . tan
=
W
D
a
W
FMR56
80 mm (3 in)
10°
Beam diameter (W)
0.53 m (1.7 ft)
1.05 m (3.4 ft)
1.58 m (5.2 ft)
2.1 m (6.9 ft)
2.63 m (8.6 ft)
3.50 m (11 ft)
4.37 m (14 ft)
5.25 m (17 ft)
_
a
2
100 mm (4 in)
8°
0.42 m (1.4 ft)
0.84 m (2.8 ft)
1.26 m (4.1 ft)
1.68 m (5.5 ft)
2.10 m (6.9 ft)
2.80 m (9.2 ft)
3.50 m (11 ft)
4.20 m (14 ft)
Mounting
A0016891
11