Vega VEGAPULS 69 - Principle of Operation

10
3 Product description
VEGAPULS 69 • Foundation Fieldbus
47251-EN-160815
•
Scan the Data Matrix code on the type label of the instrument or
•
Enter the serial number manually in the app
This operating instructions manual applies to the following instrument
versions:
•
Hardware version from 1.0.0
•
Software version from 1.1.0
The scope of delivery encompasses:
•
Radar sensor
•
Hexagon socket wrench (for instruments with swivel holder)
•
Documentation
– Quick setup guide VEGAPULS 69
– Instructions for optional instrument features
– Ex-specic"Safety instructions" (with Ex versions)
– Ifnecessary,furthercerticates
•
DVD "DTMCollection", included therein
– PACTware
– DTM Collection
– Instrumentmasterles(GSD)forProbusPA
– FDTcerticates
Information:
In this operating instructions manual, the optional instrument features
are described. The respective scope of delivery results from the order
specication.
3.2 Principle of operation
The VEGAPULS 69 is a radar sensor for continuous level measure-
mentofbulksolidsevenunderthemostdicultprocessconditions
and in very large measuring ranges.
Itisidealforuseinhigh,slendersiloswithpoorlyreectingbulksolids
suchasy-ash,plasticgranulesorwoodchipsaswellasinternal
installations that cause strong false echoes. This is made possible by
its functional principle, a distance measurement through frequency
shifting with an especially small beam angle.
Theinstrumentisavailablewithdierentantennasystemsandacces-
sories for virtually all applications and processes:
•
Plastic horn antenna or metal-jacketed lens antenna
•
Optional or integrated rinsing air connection
•
Swivelling holder with seal against the process
The instrument emits a continuous radar signal through its antenna.
This signal is frequency modulated in the form of a sawtooth wave.
Theemittedsignalisreectedbythemediumandreceivedbythe
antenna as an echo.
The frequency of the received signal always deviates from the actual
emittingfrequency.Thefrequencydierenceisproportionaltothe
distanceandthustothellingheight.Thisdierenceiscalculated
Scope of this operating
instructions manual
Scope of delivery
Application area
Functional principle