VEGA VEGAPULS 43 4 … 20 mA; HART compact sensor - Manual (Page 14)

14 VEGAPULS 43 – 4 … 20 mA
26626-EN-041227
Deviating socket dimensions
Mounting on dished tank end
> 400 mm
Mounting and installation
Mounting on a block flange is especially
advantageous. Due to its very shallow re-
cess, it is an ideal solution also for hygienic
and aseptic applications.
3.2 Measurement of liquids
Flange antenna
Horn antenna on DIN socket piece
Radar sensors are usually mounted on short
DIN socket pieces. The lower side of the
instrument flange is the reference plane for
the measuring range. The socket piece
should be as short as possible.
In vessels with dished or rounded tops,
please do not mount the instrument in the
centre or close to the vessel wall.
The flange screws of VEGAPULS 43 must
always be tightened with a torque of approx.
60 Nm so that the PTFE seal is tight.
Dished tank tops can act as paraboloidal
reflectors. If the radar sensor is placed in the
focal point of the parabolic tank top, the radar
sensor receives amplified false echoes. The
radar sensor should be mounted outside the
focal point. Parabolically amplified echoes are
thereby avoided.
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 cost-effective solution. The
top side of the vessel is the reference plane.
d
h
max.
d
50 mm/2"
80 mm/3"
100 mm/4"
150 mm/6" 100 mm
150 mm
250 mm
400 mm
h
max.