Micropilot S FMR540 4 to 20 mA HART
Installation
Hauser
13
Beam angle
The beam angle is defined as the angle
α
where the energy density of the radar waves reaches half
the value of the maximum energy density (3dB-width). Microwaves are also emitted outside the
signal beam and can be reflected off interfering installations. Beam diameter
W
ia a function of
antenna type (beam angle
α
) and measuring distance
D.
The recommended distance to the tank
wall is indicated in the tables below. It is strongly recommended to avoid any mechanical obstacles
within the highlighted area.
Horn antenna
L00-FMR54xxx-14-00-00-xx-003
Antenna size
100 mm (4")
Beam angle (
α
)
8°
Measuring
distance (D)
Beamwidth
diameter (W)
Recommended distance to wall
0° tilting
3° tilting
5 m (16 ft)
0.70 m (2.24 ft)
0.89 m (2.92 ft)
0.62 m (2.03 ft)
10 m (32 ft)
1.40 m (4.48 ft)
1.77 m (5.81 ft)
1.23 m (4.04 ft)
15 m (49 ft)
2.10 m (6.85 ft)
2.65 m (8.69 ft)
1.85 m (6.07 ft)
20 m (65 ft)
2.80 m (9.09 ft)
3.53 m (11.58 ft)
2.46 m (8.07 ft)
25 m (82ft)
3.50 m (11.48 ft)
4.41 m (14.47 ft)
3.07 m (10.07 ft)
30 m (98 ft)
4.20 m (13.71 ft)
5.29 m (17.36 ft)
3.69 m (12.11 ft)
Parabolic antenna
L00-FMR54xxx-14-00-00-xx-005
Antenna size
200 mm (8")
250 mm (10")
Beam angle (
α
)
4.4°
3.3°
Measuring
distance (D)
Recommended distance to wall
5 m (16 ft)
0.35 m (1.15 ft)
0.2 m (0,66 ft)
10 m (32 ft)
0.70 m (2.30 ft)
0.5 m (1.64 ft)
15 m (49 ft)
1.05 m (3.44 ft)
0.75 m (2.46 ft)
20 m (65 ft)
1.40 m (4.59 ft)
1.05 m (3.44 ft)
25 m (82ft)
1.75 m (5.74 ft)
1.3 m (4.27 ft)
30 m (98 ft)
2.10 m (6.89 ft)
1.6 m (5.25 ft)
35 m (115 ft)
2.45 m (8.04 ft)
1.85 m (6.07 ft)
40 m (131 ft)
2.80 m (9.19 ft)
2.1 m (6.89 ft)
D
W
D
W