2
1
3
F
ig
.
1
:
E
xample of a
VEGABAR
65
with process
fi
tting
G
1
½
A
and plastic
housing
1
H
ousing cover with integrated
PLICSCOM
(
optional
)
2
H
ousing with electronics
3
P
rocess
fi
tting with measuring cell
3
.
2
P
rinciple of operation
VEGABAR
65
is a pressure transmitter for use in the chemical
,
food
processing and pharmaceutical industries
.
D
epending on the version
,
it is used for level
,
gauge
,
absolute pressure or vacuum measurement
.
M
easured products are gases
,
vapours and liquids
,
also those with
higher temperatures
.
T
he
METEC
®
measuring cell is the measuring unit
.
I
t consists of the
ceramic
-
capacitive
CERTEC
®
measuring cell and a special
,
temper
-
ature
-
compensating isolating system
.
T
he 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 liquid
.
T
his change is converted
into a corresponding output signal
.
P
ower supply via the
P
ro
fi
bus
DP
/
PA
segment coupler or
VEGALOG
571
EP
cards
.
A
two
-
wire cable according to
P
ro
fi
bus speci
fi
cation
serves as carrier of both power and digital data transmission for
multiple sensors
.
T
he instrument pro
fi
le of
VEGABAR
65
corresponds
to pro
fi
le speci
fi
cation version
3
.
0
.
T
he
GSD
(
instrument master
fi
les
)
and bitmap
fi
les necessary for
planning your
P
ro
fi
bus
-
DP
-(
PA
)
communication network are available
from the download section on the
VEGA
homepage www
.
vega
.
com
under
"
S
ervices
-
D
ownloads
-
S
oftware
-
P
ro
fi
bus
"
.
T
here you can
also
fi
nd the appropriate certi
fi
cates
.
I
n a
PDM
environment
,
an
EDD
(
E
lectronic
D
evice
D
escription
)
is also required to enable the full range
of sensor functions
(
also available as a download
).
A CD
with the
appropriate
fi
les can be ordered via e
-
mail under info
@
de
.
vega
.
com or
by phone from one of the
VEGA
agencies under the order number
"
DRIVER
.
S
"
.
A
pplication area
F
unctional principle
P
ower supply and bus
communication
GSD
/
EDD
VEGABAR
65
•
P
ro
fi
bus
PA
9
3
P
roduct description
28253
-
EN
-
081209