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4 Mounting
VEGAPULS 67 • 4 … 20 mA/HART - four-wire
36532-EN-160224
Fig. 5: Turning by fastening in the centre
4.4 Mounting instructions
For tight installation of the version with plastic horn antenna with com-
pression or adapter flange, the following conditions must be fulfilled:
1. Use suitable flat seal, e.g. of EPDM with Shore hardness 25 or 50
2. Make sure the number of flange screws corresponds to the num
-
ber of flange holes
3. Tighten all screws with the torque stated in the technical data
The emitted radar impulses of the radar sensor are electromagnetic
waves. The polarisation is the direction of the electrical share. With
radar sensors, the polarisation can be used to reduce the effect of
false echoes considerably by turning the instrument in the connection
flange or mounting boss.
The position of the polarisation is marked on the instrument.
1
Fig. 6: Position of the polarisation
1 Marking bar
Mount the instrument at least 200 mm (7.874 in) away from the vessel
wall.
200 mm
(7.87")
Fig. 7: Mounting the radar sensor on the vessel top
Tight installation of the
plastic horn antenna
Polarisation
Installation position