VEGA VEGAPULS 68 (≥ 2.0.0 - ≥ 4.0.0) Foundation Fieldbus - Manual (Page 16)

16
4 Mounting
VEGAPULS 68 • Foundation Fieldbus
36538-EN-121011
ficient air flow (the air is led through the holes to the feed system. A
rinsing of the whole parabolic antenna is not intended).
1
2
3
4
Fig. 6: Dismounting, parabolic antenna
1 Connection piece
2 Compression nut
3 Locknut
4 Parabolic antenna
4.4 Instructions for installation
The illustrations with the following mounting instructions show a radar
sensor with horn antenna. The mounting instructions apply analo-
gously also to the version with parabolic antenna.
The emitted radar impulses of the radar sensor are electromagnetic
waves. The polarisation plane is the direction of the electrical wave
component. By turning the instrument in the connection flange or
mounting boss, the polarisation can be used to reduce the effects of
false echoes.
The position of the polarisation plane is marked on the process fitting
of the instrument.
1 2
Fig. 7: Position of the polarisation level
1 Marking with screwed version
2 Marking with flange version
Mount the sensor at least 200 mm (7.874 in) away from the vessel
wall.
Horn and parabolic
antenna
Polarisation plane
Installation position