VEGA VEGAPULS 56V - Manual (Page 34)

34 VEGAPULS 56V
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Pipe flange system as bypass pipe
Extended bypass pipe on the vessel with strong
product movements
Mounting and installation
Also note the required vent in the surge pipe.
These vent or compensation holes must be in
one axis with the hole in the intermediate
flange (polarisation direction of the radar
signals).
As an alternative to the surge pipe in the
vessel, a pipe antenna system outside the
vessel is possible as bypass pipe.
Note that with a measurement in the surge or
bypass pipe the max. measuring range is
reduced by 5 … 20 % (e.g. DN 50: 16 m
instead of 20 m and DN 100 only 19 m in-
stead of 20 m).
Direct the sensor such that the hole in the
intermediate flange is in one axis with the
pipe holes or pipe openings. The polarisation
of the radar signals enables considerably
more stable measurements with this direct-
ing.
Surge pipe welded to
the tank Surge pipe in the socket
piece
Pipe antenna systems in the tank
Vent
Hole in the
intermedi-
ate flange
Deflector
max.
min.
Hole