VEGA VEGAPULS 45 VBUS - Manual (Page 22)

22 VEGAPULS 42, 44 and 45 – VBUS
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VEGAPULS 44: Rows of holes on one axis with the
type label
Type label
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Mounting and installation
Openings in a surge pipe for mixing of inhomogene-
ous products
slightly inhomogeneous
liquids
inhomogeneous liquids
homogeneous
liquids
If you want to measure inhomogeneous prod-
ucts 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.
The more inhomogeneous the measured
product, the closer the openings should be
spaced.
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.
Every wider slot causes a false echo. The
slots should therefore not exceed a width of
10 mm, to keep the signal-to-noise ratio at a
minimum. Round slot ends are better than
rectangular ones.
VEGAPULS 45 with integrated measuring tube (surge
pipe) measures between the heating spirals
Standpipe measurement of inhomoge-
neous products