VEGA VEGASCAN 850 - Manual (Page 42)

42 VEGASCAN 850
Swivelling holder
We offer as an accessory a swivelling holder
(mounting strap) for mounting of VEGASON
53. This simplifies the alignment of the sensor
to the product surface.
Suitable is the use of VEGASON 54 … 56
version B or C. For solids, the swivelling
holder enables an optimum alignment of the
transducer, thus minimising false echoes.
≥ 250 mm
Shaft pump
Measuring tube
Shaft pump
see “4.5 Socket extension“
Socket piece
min.
distance
Meas. range
Example of a socket extension or measuring tube in a
shaft
4.4 Measurement of solids
Flange mounting
As with applications for liquids, the instrument
can be mounted on a short DIN socket con-
nection on vessels for solids. The transducer
axis, however, should point to the vessel
outlet or should be oriented perpendicularly
to the product surface. The socket length can
be max. 60 … 400 mm, depending on the
sensor type.
Mounting and installation
Pump shaft
Narrow shafts and shaft-like openings (ves-
sel openings) with very rough walls and
shoulders make an ultrasonic measurement
extremely difficult due to strong false echoes.
This problem can be overcome by using an
extended socket piece or a complete meas-
uring tube (see chapter "4.5 Socket exten-
sion“).
Shaft
Very good measuring results can be attained
with a measuring tube in continuous narrow
shafts, see figure. The applied measuring
tube must have smooth walls inside (e.g. PE
sewage pipe) and a diameter of
100 mm. This
arrangement works well as long as the inside
of the measuring tube collects no dirt or
buildup (cleaning necessary). You might
want to consider using hydrostatic pressure
transmitters or capacitive measuring probes.
Either the measuring tube should never be
immersed in the medium, or it must always
be immersed (so that the measurement is
carried out exclusively in the tube).
VEGASON 53 on inclined vessel flange
Reference plane
Min. distance