10
3 Product description
VEGAPULS 61 • Profibus PA
28444-EN-141215
•
Article and serial number device
•
Article numbers, documentation
•
Technical data: Approvals, antenna type, process fitting, process
seal/temperature, signal output, voltage supply, protection, protec-
tion class
With the serial number, you can access the delivery data of the instru-
ment via www.vega.com, "
VEGA Tools
" and "
serial number search
".
You can find the serial number on the inside of the instrument as well
as on the type label on the outside.
3.2 Principle of operation
VEGAPULS 61 is a radar sensor in K-band (emitting frequency ap-
prox. 26 GHz) for continuous level measurement.
The version with
encapsulated antenna system
is particularly suit-
able for level measurement of aggressive liquids in small vessels.
The version with
plastic horn antenna
is particularly suitable for flow
measurement in open flumes or gauge measurement in bodies of
water.
The electronics with increased sensitivity enables the use of VE-
GAPULS 61 also in applications with very poor reflective properties or
products with low ε
r
value.
The antenna of the radar sensor emits short radar pulses with a
duration of approx. 1 ns. These pulses are reflected by the product
and received by the antenna as echoes. The transit time of the radar
pulses from emission to reception is proportional to the distance and
hence to the level. The determined level is converted into an appropri-
ate output signal and outputted as measured value.
Power supply via the Profibus DP/PA segment coupler or VEGALOG
571 EP cards. A two-wire cable according to Profibus specification
serves as carrier of both power and digital data transmission for mul-
tiple sensors. The instrument profile of VEGAPULS 61 corresponds to
profile specification version 3.0.
The GSD (instrument master files) and bitmap files necessary for
planning your Profibus-DP-(PA) communication network are available
from the download section on the VEGA homepage www.vega.com
under "
Services - Downloads - Software - Profibus
". There you can
also find the appropriate certificates. In a PDM environment, an EDD
(Electronic Device Description) is also required to enable the full
range of sensor functions (also available as a download).A CD with
the appropriate files can be ordered via e-mail under [email protected].
com or by phone from one of the VEGA agencies under the order
number "DRIVER.S".
The backlight of the display and adjustment module is powered by the
sensor. Prerequisite is a certain level of operating voltage.
The data for power supply are specified in chapter "
Technical data
".
The optional heating requires its own operating voltage. You can find
detailed information in the supplementary instructions manual "
Heat-
Area of application
Functional principle
Power supply and bus
communication
GSD/EDD
