1
2
+
( )
(-)
3
4
+
( )
(-)
1
2
4
3
F
ig
.
10
:
C
onnection of
VEGADIS
62
with low impedance power supply
1
S
ensor
2
VEGADIS
62
3
HART
resistor
>
150
Ω
4
V
oltage supply
/
P
rocessing
5
.
5
C
onnection
HART
multidrop
T
he following illustrations show in a simpli
fi
ed way the use of
VEGADIS
62
in conjunction with a
HART
sensor
.
T
he
HART
communication resistance in the signal cable is always required for a
low impedance power supply
.
I
t is absolutely necessary to install it
between voltage supply and the
VEGADIS
62
.
N
ote
:
I
f the instrument is powered via a
VEGAMET
signal conditioning
instrument
,
then the communication resistor is already included in the
signal conditioning instrument
.
A
communication resistor in the signal
cable must not be installed
.
C
onnection with low im
-
pedance power supply
18
VEGADIS
62
5
C
onnecting to power supply
36469
-
EN
-
120329
