VEGA VEGAPULS SR 68 4 … 20 mA_HART two-wire - Manual (Page 16)

16
4 Mounting
VEGAPULS SR 68 • 4 … 20 mA/HART two-wire
38294-EN-130624
3. Insert the antenna from below into the vessel socket and secure it
against falling off
4. Retighten the antenna with hexagon screws to the antenna
socket; torque max. 2.5 Nm (1.8 lbf ft)
Note:
The radar sensor with rinsing air connection or antenna extension
is provided with a notch on the antenna socket. This notch must be
aligned with the marking on the process fitting (the marking specifies
the position of the polarisation of the radar signal).
3
4
1
2
Fig. 6: Dismounting of the horn antenna
1 Marking for the polarisation
2 Marking at the antenna socket
3 Hexagon screws on the antenna socket
4 Antenna
4.4 Mounting instructions
The emitted radar impulses of the radar sensor are electromagnetic
waves. The polarisation is the direction of the electrical wave compo-
nent. 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 is marked on the process fitting of the
instrument.
Polarisation