T
o implement line monitoring
,
you have to mount a resistor of
220
k
Ω
between terminals
1
and
2
in the connection housing of the probe
.
T
his
means that with single point control
,
the measuring and ground
electrode are monitored and with two
-
point control
,
the max
.
and
ground electrode
.
W
hen a fault message is generated
,
the switching output is
simultaneously activated
.
2
3
1
2
3
1
1
2
3
4
1
F
ig
.
12
:
M
easuring system
with
line monitoring
1
R
esistor
(
220
k
Ω)
I
f a fault message is not wanted
,
a bridge must be provided on the
signal conditioning instrument instead of the resistor in the connection
housing of the probe
.
N
ote
:
T
he line monitoring and the fault signal are inactive with this bridge
.
2
3
1
2
3
1
1
2
3
4
1
F
ig
.
13
:
M
easuring system
without
line monitoring
1
B
ridge between terminal
3
and
4
I
f a measuring system is used as part of an over
fi
ll protection system
,
the bridge on the signal conditioning instrument must not be closed
.
W
ith
E
x probes
,
the resistor in the probe housing is already present
.
F
ault signal adjustment
,
bridge
VEGATOR
631
E
x
•
S
ignal conditioning instrument
21
6
S
et up
23440
-
EN
-
090130
