Endress+Hauser Micropilot FMR10 - 5.1.3 Position for installation on a vessel

Micropilot FMR10
14 Endress+Hauser
90°
90°
90°
90°
90°
A0028927
 9 Device alignment for installation on a vessel
Beam angle
_
2
α
W = 2 × D × tan
α
D
W
A0033201
 10 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