User Manual

VEGAPULS 42 and 44 – 4 … 20 mA 37
Mounting and installation
Mounting directly on the flat vessel top
Reference plane
Mounting on dished tank ends
Reference plane
1
/
2
vessel radius
Horn antenna directly on the vessel top
If the stability of the vessel will allow it (sensor
weight), flat mounting directly on the vessel
top is a good and economical solution. The
top side of the vessel is the reference plane.
Screw-on antenna with antenna extension on socket
piece
£ 250 mm
Screw-on antenna
Screw-on antenna on socket piece
The screwed antenna is mainly used on small
vessels. The antenna fits on small vessel
openings down to 1
1
/
2
“ socket.
The socket must not be longer than 140 mm
(when using the longer antenna, not longer
than 250 mm).
On dished tank ends, please do not mount
the instrument in the centre or close to the
vessel wall, but approx.
1
/
2
vessel radius from
the centre or from the vessel wall.
Dished tank ends can act as paraboloidal
reflectors. If the radar sensor is placed in the
focal point of the parabolic tank, the radar
sensor receives amplified false echoes. The
radar sensor should be mounted outside the
focal point. Parabolically amplified echoes
can be thereby avoided.
Screw-on antenna on socket piece 1
1
/
2
“
£ 140 m
Reference plane
Vessel center or
symmetry axis