Endress+Hauser Micropilot FMR10 - Beam Angle

Micropilot FMR10 Installation
Endress+Hauser 15
90°
90°
90°
90°
90°
A0028927
 6 Device alignment for installation on a vessel
5.1.5 Beam angle
_
2
α
W = 2 × D × tan
α
D
W
A0033201
 7 Relationship between beam angle α, distance D and beamwidth diameter W
The beam angle is defined as the angle α at which the power density of the radar waves
reaches half the value of the maximum power density (3 dB width). Microwaves are also
emitted outside the signal beam and can be reflected off interfering installations.
Beam diameter W as a function of beam angle α and distance D.
40 mm (1.5 in) antenna, α 30 °
W = D × 0.54
40 mm (1.5 in) antenna with flooding protection tube, α 12 °
W = D × 0.21