12
4 Mounting
VEGAPULS C 21 • SDI-12
58342-EN-200121
The position of the polarisation is in the middle of the type label on the
instrument.
1
Fig. 6: Position of the polarisation
1 Middle of the type label
Mount the sensor at a position that is at least 200 mm (7.874 in) away
from a wall or structural parts (see illustrations above).
If you cannot maintain this distance, you should carry out a false
signal suppression during setup. This applies particularly if buildup
on the wall or structural parts is to be expected. In such cases, we
recommend repeating the false signal suppression at a later date with
existing buildup.
The antenna edge of the device is the beginning of the measuring
range and at the same time the reference plane for the min./max.
adjustment, see following diagram:
1
Fig. 7: Reference plane
1 Reference plane
Do not mount the instruments in or above the feed stream. Make sure
that you detect the product surface, not the inflowing product.
Fig. 8: Mounting of the radar sensor with inflowing medium
Installation position
Reference plane
Inflowing medium
