13
4 Mounting
VEGAPULS 21 • Two-wire 4 … 20 mA/HART
58351-EN-191014
Fig. 7: Mounting of the radar sensor on vessels with conical bottom
The lower side of the radar antenna is the beginning of the measur-
ing range. It is at the same time the reference plane for the min./max.
adjustment, see following diagram:
1
Fig. 8: Reference plane
1 Reference plane
Do not mount the instruments in or above the filling stream. Make sure
that you detect the product surface, not the inflowing product.
Fig. 9: Mounting of the radar sensor with inflowing medium
With threaded connection, the antenna end should protrude at least
5 mm (0.2 in) out of the socket.
Reference plane
Inflowing medium
Threaded socket und
socket piece