VEGA VEGAPULS 56K - Manual (Page 16)

16 VEGAPULS 56K
22915-EN-041227
Row of holes in one axis with the marking hole
Polarisation direction
Due to radar signal polarisation, the holes or
slots must be positioned in two rows offset
by 180°. The radar sensor must then be
mounted so that the type label of the sensor
is aligned with the rows of holes.
Surge pipe with ball valve
If a ball valve is mounted in the surge pipe,
maintenance and servicing can be carried
out without opening the vessel (e.g. if it con-
tains liquid gas or toxic products).
A prerequisite for trouble-free operation is a
ball valve throat that corresponds to the pipe
diameter. The valve must not have rough
edges or constructions in its channel.
Make sure that standpipe ventilation is pro-
vided.
Marking hole
Openings in a surge pipe for mixing of inhomogene-
ous products
Mounting and installation
slightly inhomogeneous
liquids homogeneous
liquids
The more inhomogeneous the measured
product, the closer the openings should be
spaced.
very inhomogeneous liquids inhomogeneous
liquids
Standpipe measurement of inhomoge-
neous products
If you want to measure inhomogeneous or
stratified products in a surge pipe, it must
have holes, elongated holes or slots. These
openings ensure that the liquid is mixed and
corresponds to the liquid in the vessel.