VEGA VEGAPULS 62 (≥ 2.0.0 - ≥ 4.0.0) Profibus PA - Manual (Page 16)

16
4 Mounting
VEGAPULS 62 • Profibus PA
36505-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
When mounting the sensor, keep a distance of at least 200 mm
(7.874 in) from the vessel wall. If the sensor is installed in the center
of dished or round vessel tops, multiple echoes can arise. However,
these can be suppressed by an appropriate adjustment (see chapter
"Setup").
If you cannot keep this distance you should carry out a false echo
storage before setup. This applies mainly if buildup on the vessel wall
Horn and parabolic
antenna
Polarisation plane
Installation position