VEGA VEGAPULS 56V - Manual (Page 39)

VEGAPULS 56V 39
Mounting and installation
0 %
~45 ••
ш 100,8
0,0…0,4
1,5…2
3,6
0,0…0,4
150…500
5…15
3,6
ш 96
2
100 %
Flange DN 100
Smooth welding
flange
Connecting
sleeve
Welding neck
flanges
Welding of the smooth
welding flange
Welding of the welding
neck flange
Fastening of
measuring
pipe
Vessel bottom
Deflector
On the left you see the construction of a
measuring pipe on the example of a radar
sensor with a DN!100 flange.
Radar sensors with flanges of DN!80,
DN!100!and DN!150 are equipped with a
horn antenna. Instead of the welding neck
flange also a smooth welding flange can be
used on the sensor side of these sensors.
In agitated products, fasten the measuring
pipe to the vessel bottom. Provide additional
fastenings for longer measuring pipes.
With the deflector on the measuring pipe end,
the radar signals are reflected from the ves-
sel bottom. This ensures that in nearly empty
vessel and products with low dielectric con-
stants, the medium is detected and not the
vessel bottom. In products with low dielectric
constant figures, the product is penetrated
by radiation and the vessel bottom delivers
at low level considerably clearer radar ech-
oes than the product surface.
Due to the deflector, the useful signal remains
and hence the measured value can be
clearly detected in nearly empty vessel and
the 0!%-level is reliably detected.
Rz
≤ 30
Burr the
holes
Min. product
level to be
measured
(0!%)