Endress+Hauser Micropilot FMR20 - Beam Angle

Micropilot FMR20 HART Installation
Endress+Hauser 17
β
α
A
B
β
α
A0045325
 7 Aligning the sensor with the product cone
A Installation with adjustable flange seal
B Installation with FAU40 alignment unit
To avoid disturbance echoes, use metal plates installed at an angle (where necessary)
5.1.5 Beam angle
_
2
α
W = 2 × D × tan
α
D
W
A0046285
 8 Relationship between beam angle α, distance D and beamwidth diameter W
The beam angle is defined as the angle α at which the power energy of the radar waves
reaches half the value of the maximum power density (3dB 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.