VEGA VEGASON 54V…56V - Manual (Page 4)

4 VEGASON 54V … 56V
Product description
1 Product description
1.1 Function
Continuous level measurement with ultrasonic
sensors is based on the running time meas-
urement of ultrasonic pulses.
VEGASON series 54 … 56 sensors are a
newly developed generation of extremely
compact ultrasonic sensors for level meas-
urement. They were especially developed for
solids and larger measuring ranges. Pre-
ferred areas of application are silos, bunkers
or material heaps.
Due to the small housing dimensions and
process fittings, the compact sensors are a
very reasonable solution for your level meas-
urement applications. With the integrated
display and a special sensor intelligence, in
conjunction with large measuring ranges,
they can be used for applications in which
the advantages of a non-contact measure-
ment could never before be realized.
As output or measuring signal, the instru-
ments produce a digital output signal which
is further processed in the VEGAMET signal
conditioning instrument or in the VEGALOG
processing system.
Measuring principle
Piezoceramic high performance transducers
emit focused ultrasonic pulses which are
reflected by the product surface. The meas-
urement electronics prepares a precise pic-
ture of the environment out of the reflected
ultrasonic pulses. The transducers work both
as transmitter and receiver. As receiver, the
transducers are high-sensitivity piezo micro-
phones.
emission - reflection - reception
Meas. dis-
tance
The measurement electronics precisely cal-
culates the distance between transducer and
medium from the speed of sound and the
measured running time of the emitted sound
impulse. The distance is then converted into
a level proportional signal, and in conjunction
with the sensor parameter settings, made
available as precise, calibrated level value.
Since the speed of sound is subjected to a
temperature influence, the transducer also
continuously detects the ambient tempera-
ture, so that the level is precisely measured
even in case of varying ambient temperature.