VEGA VEGABAR 61 Profibus PA - Manual (Page 9)

l Article number instrument
l Technical data: Measuring range, process pressure, process
temperature, signal output, voltage supply, protection, protection
class
l Order number
l Article numbers documentation
l Serial number
With the serial number, you can access the delivery data of the
instrument via www.vega.com, "VEGA Tools" and "serial number
search". In addition to the type label outside, you can also find the
serial number on the inside of the instrument.
Instruments in the version "Oil and grease-free for oxygen applica-
tions" are equipped with a supplementary label. The supplementary
label contains instructions on oil and grease-free parts of the
instrument.
3.2 Principle of operation
The VEGABAR 61 is a pressure transmitter with isolating diaphragm
for pressure measurement of highly corrosive and hot liquids.
The sensor element for measuring ranges up to 60 bar is the
CERTEC
®
measuring cell with rugged ceramic diaphragm. The
hydrostatic pressure of the product or the process pressure causes a
capacitance change in the measuring cell via the metal process
diaphragm and the isolating system.
1)
The sensor element for measuring ranges from 100 bar is a wire strain
gauge (DMS) on the rear of the process diaphragm. There, the
process pressure causes a resistance change, which is converted into
an appropriate output signal.
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
multiple sensors. The instrument profile of VEGABAR 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 - Pro
fibus". 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
1) The isolating system protects the sensor against corrosive products and
high temperatures. By selecting suitable diaphragm materials and isolating
liquids, systems with a temperature resistance up to 400 °C (752 °F) can be
achieved.
Supplementary label
"O
il and grease-free for
oxygen applications"
Application area
Functional principle
Power supply and bus
communication
GSD/EDD
VEGABAR 61 • Profibus PA 9
3 Product description
28251
-
EN
-081209