Typical applications are overfill and dry run protection.Thanks
to its simple and robust measuring system,VEGAWAVE 61 is
virtually unaffected by the chemical and physical properties of
the bulk solid.
It functions even when exposed to strong external vibration or
changing products.
Solid detection in water
IfVEGAWAVE 61 was ordered for detection of solids in water,
the tuning fork is adjusted to the density of water.In the air or
when covered by water (density:1g/cm³/0.036 lbs/in)
VEGAWAVE 61 signals "uncovered".Only if the vibrating
element is also covered with solids (e.g.sand,sludge,gravel
etc.) will the sensor signal "covered".
Fault monitoring
The electronics of VEGAWAVE 61 continuously monitors the
following criteria:
lCorrect vibrating frequency
lLine break to the piezo drive
If one of the mentioned malfunctions is detected or in case of
power failure,the electronics takes on a defined switching
condition,i.e.the output transistor blocks (safe condition).
The tuning fork is piezoelectrically energised and vibrates at its
mechanical resonance frequency of approx.150 Hz.When the
tuning fork is submerged in the product,the vibration
amplitude changes.This change is detected by the integrated
oscillator and converted into a switching command.
VEGAWAVE 61 is a compact instrument,i.e.it can be
operated without external evaluation system.The integrated
electronics evaluates the level signal and outputs a switching
signal.With this switching signal,a connected device can be
operated directly (e.g.a warning system,aPLC,a pump etc.).
The data for power supply are stated in chapter "Technical
data"in the "Supplement".
3.3Operation
With the factory setting,products with a density of >0.02 g/cm³
(0.0008 lbs/in³)can be measured.The instrument can also be
adapted to products with lower density >0.008 g/cm³
(0.0003 lbs/in³).
Functional principle
Supply
VEGAWAVE 61 --transistor (NPN/PNP)9
Product description
32248-EN-070117
