21
4 Mounting
VEGAPULS 69 • Modbus and Levelmaster protocol
47252-EN-210205
200 mm
(7.87")
Fig. 13: Mounting the radar sensor on the vessel top
If you cannot maintain this distance, you should carry out a false
signal suppression during setup. This applies particularly if buildup on
the vessel wall is expected. In such cases, we recommend repeating
the false signal suppression at a later date with existing buildup.
The measuring range of VEGAPULS 69 begins physically at the end
of the antenna. The min./max. adjustment, however, begins at the
reference plane. The reference plane is different depending on the
sensor version.
•
Flange with lens antenna:
The reference plane is the lower side
of the flange
•
Plastic horn antenna:
The reference plane is the sealing surface
on the lower edge
•
Thread with integrated antenna system:
The reference plane is
the sealing surface at the bottom of the hexagon
The following graphic shows the position of the reference plane with
different sensor versions.
3
2
1
1
1
4
Fig. 14: Position of the reference plane
1 Reference plane
2 Flange with lens antenna
3 Plastic horn antenna
4 Thread with integrated antenna system
The instrument should not be mounted too close to the inflowing
medium, as the radar signal could be disrupted.
Silo with filling from top
The optimal mounting position is opposite the filling aperture. To avoid
heavy soiling, the distance to any filter or dust exhauster should be as
large as possible.
Reference plane
Inflowing medium
