VEGAPULS 56K
31
0
10 m
0 m
20 m
20˚
30˚
100 %
50 %
3,5 m
5,0 m
3,5 m
5,0 m
0
10 m
0 m
20 m
30˚
40˚
100 %
50 %
5,3 m
5,3 m
6,8 m
6,8 m
Emission cone of a DN␣ 100 horn antenna
Measuring
distance
Emission cone and false reflections
The radar signal is focused by the antenna
system. The signal leaves the antenna in coni-
cal form similar to the beam pattern from a
spotlight. This emission cone angle depends
on the antenna used.
Any object in this emission cone causes a
reflection of the radar signal. Within the first
few metres of the emission cone mechanical
obstructions cause strong false reflections. In
a distance of 6 m the false signal of a pipe has
9-times more amplitude than at a distance of
18 m.
Mounting and installation
Emission cone of a DN 150 horn antenna
Measuring
distance
