VEGA VEGAPULS 51V…54V - Manual (Page 28)

28 VEGAPULS 51 V … 54 V
4.2 Measurement of liquids
Horn antenna
Most of the time the mounting of radar
sensors is made on short DIN-socket pieces.
The instrument flange is the reference pane
of the measuring range. The antenna should
always protrude out of the flange pipe.
Mouning on short DIN-socket piece
Mounting on longer DIN-socket
When mounting on dished end vessels the
antenna has to protrude at least 10 mm.
Mounting on a dished end vessel
Reference pane
> 10 mm
> 10 mm
When the DIN-socket piece is longer, please
note that the horn antenna must protrude at
least 10 mm out of the socket.
Emission cone of a DN 150 horn antenna
Meas. distance
Mounting and installation - Measurement of liquids
Series
64
and 81
Series 50
DN 150 horn antenna
If possible provide a "clear view" inside the
emission cone to the product and avoid
obstructions in the first third of the cone.
Optimum measuring conditions exist when
the emission cone reaches the measured
product vertically and when the emission
cone is free from obstructions.