17 18 19 20 21 22
9
10
11 12
1
2
3
4
23 24 25 26 27 28
13 14
15 16
5
6
7
8
L1
N
+ -
+ -
+ -
+ -
+ -
1
7
2
3
8
9
4
5
6
+ -
11
12
10
F
ig
.
4
:
W
iring plan
VEGAMET
624
with four
-
wire sensors
1
I
nternal operating relay
1
2
I
nternal operating relay
2
3
I
nternal operating relay
3
4
I
nternal current output
1
5
I
nternal current output
2
6
I
nternal current output
3
7
V
oltage supply of
VEGAMET
624
8
M
easurement data input with sensor supply
(
active input
)
9
M
easurement data input
(
passive input
),
not with
E
x
-
ia version
10
I
nternal fail safe relay
11
4
…
20
m
A
/
HART
sensor
(
four
-
wire version
)
12
P
ower supply for four
-
wire sensor
W
iring plan for four
-
wire
sensors
VEGAMET
624
•
4
…
20
m
A
/
HART
signal conditioning instrument
15
5
C
onnecting to power supply
28969
-
EN
-
091116
