Vega VEGAVIB 61 - 3.3 Adjustment; 3.4 Storage and transport

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3 Product description
VEGAVIB 61 • Two-wire 8/16 mA
29268-EN-170315
Typicalapplicationsareoverllanddryrunprotection.Thankstoits
simple and robust measuring system, VEGAVIB 61 is virtually unaf-
fected by the chemical and physical properties of the bulk solid.
It also works when subjected to strong external vibrations or changing
products.
Solid detection in water
If VEGAVIB 61 was ordered for solid detection in water, the vibrating
rod is calibrated to the density of water. If covered by water (density:
1 g/cm³/0.036 lbs/in) VEGAVIB 61 signals "uncovered". Only if the
vibrating element is also covered with solids (e.g. sand, sludge, gravel
etc.) will the sensor signal "covered".
Function monitoring
The electronics module of VEGAVIB 61 continuously monitors the
following criteria:
•
Correct vibrating frequency
•
Linebreaktothepiezodrive
If one of these faults is detected, the electronics signals this via a
denedcurrenttothesignalconditioninginstrument.Theconnection
cable to the vibrating element is also monitored.
Thevibratingrodispiezoelectricallyenergisedandvibratesatits
mechanicalresonancefrequencyofapprox.360Hz.Whenthevibrat-
ing rod is submerged in the product, the vibration amplitude changes.
This change is detected by the integrated electronics module and
converted into a switching command.
Depending on your requirements, VEGAVIB 61 with two-wire elec-
tronicscanbeconnectedtodierentsignalconditioninginstruments.
Compatible signal conditioning instruments are listed in chapter
"Technical data".
Thedataforpowersupplyarespeciedinchapter"Technical data".
3.3 Adjustment
With the factory setting, products with a density of > 0.03 g/cm³
(0.0011 lbs/in³) can be measured. It is possible to adapt the instru-
ment for products with lower density > 0.02 g/cm³ (0.0007 lbs/in³).
Ontheelectronicsmoduleyouwillndthefollowingdisplayand
adjustment elements:
•
Signal lamp for indication of the switching condition (green/red)
•
Potentiometer for adaptation to the product density
•
Mode changeover for selection of the output current
3.4 Storage and transport
Your instrument was protected by packaging during transport. Its
capacity to handle normal loads during transport is assured by a test
based on ISO 4180.
Functional principle
Voltage supply
Packaging