1Application,function,configuration
Area of application
VEGABAR 54,64 and 65 sensors are designed for front flush
level and process measurement of gases,vapours and liquids.
Application-optimised housings and materials ensure reliable
use even in harsh environments.For extremely moist areas,IP
68 version of VEGABAR is available.Comprehensiveadjustment
and indicating options as well as elec.modules with signal out-
puts 4…20 mA/HART,Profibus PA and Foundation Fieldbus
make for easy integration into the system environment.
VEGABAR 54 and 64 sensors are especially suited for use in
abrasive mediums in the paper industry or in waste water treat-
ment.VEGABAR 54 with the small CERTEC
®
measuring cell is
available with process fittings from ½".It is particularly suitable for
small pipelines as well as the ball valve fitting PASVE as connec-
tion option.VEGABAR 64 with standard CERTEC
®
measuring
cell is available with various thread and flange fittings as well as
materials for universal applications.1)
VEGABAR 65,with its hygienic fittings,is particularly suitable for
the food processing and pharmaceutical industry.
User advantages
lhigh long-term stability <0.1%/2years
lsmall deviation in characteristics <0.075 %,optional <0.05 %
lup to 150-fold overload resistance
lProduct temperature up to 200 °C
lMeasuring ranges up to 60 bar
lCompletely flush process fittings
lTurn Down up to 1:100 and higher
lFunctional safety acc.to IEC 61508-4up to SIL3
lExchangeable indicating and adjustment module
lQuick setup by easy menu guidance
lComprehensive monitoring and diagnostics functions
Measuring principle
The process pressure causes via the diaphragm a change of an
elec.parameter of the measuring cell.This change is converted
into an appropriate output signal.Since the instruments are all
designed for specific application areas,different sensor elements
i.e.measuring units are used for detecting the pressure.
VEGABAR 54,64
The sensor element of VEGABAR 54 iand 64 is the dry ceramic-
capacitive CERTEC
®
measuring cell.Base element and dia-
phragm consist of high purity sapphire-ceramic
®
.
The CERTEC
®
measuring cell is also equipped with a temper-
ature sensor.The temperature value can be displayed via the
indicating and adjustment module PLICSCOM or processed via
the signal output.
16 µm
1
2
3
Fig.1:Configuration of the CERTEC
®
measuring cell in VEGABAR 54 and 64
1Diaphragm
2Soldered glass bond
3Base element
The features of the CERTEC
®
measuring cell are:
lVery high overload resistance
lGood corrosion resistance
lVery high abrasion resistance
lNo hysteresis
VEGABAR 65
The METEC
®
measuring cell is the measuring unit of VEGABAR
65.This unit consists of a CERTEC
®
measuring cell and a special
isolating system with metallic process diaphragm.Aspecial fea-
ture of this isolating system is that the temperature influence is
directly compensated mechanically.
The process pressure causes via the respective diaphragm a
change in an elec.parameter of the measuring cell.This change
is converted into a corresponding output signal.
4321
Fig.2:Configuration of the METEC
®
measuring cell in VEGABAR 65
1Process diaphragm
2Isolating liquid
3FeNi adapter
4CERTEC
®
measuring cell
The features of the METEC
®
measuring cell are:
lcompletely welded,elastomer-free
lGood thermo-shock reaction
lExcellent long-term stability
lHigh degree of flushness.
Configuration
VEGABAR 54,64 and 65 pressure transmitters are available with
different housing protections:
Application,function,configuration
Hydrostatic –Level and pressure measurement 3
1)PASVE:Trade name of Satron Instruments Oy.
29235-EN-060411