T
he switching status of the electronics can be checked with
closed housing
(
only plastic housing
),
see
"
F
unction chart
"
.
N
ote
:
W
hen placing the housing cover
,
make sure that the inspection
glass is above the signal lamp
(
LED
)
of the oscillator
.
T
o adjust
VEGACAP
27
,
loosen
fi
rst of all the four screws on
the upper side of the instrument with a screwdriver and remove
the housing cover
.
Y
ou can adapt the switching point to the solid with the
potentiometer
.
T
he electronics is adjustment free and an adaption is only
necessry in exceptions
.
S
ee
"
E
xceptions
"
.
W
ith the mode switch you can change the switching condition
of the relay
.
Y
ou can set the required mode
(
A
-
max
.
detection
or over
fi
ll protection
,
B
-
min
.
detection or dry run protection
).
W
e recommend connecting according to the quiescent current
principle
(
relay contact deenergizes when the switching point
is reached
),
because the relay always takes on the same
(
safe
)
condition if a failure is detected or in case of mains
failure
.
C
ontrol lamp for indication of the switching condition
l
C
ontrol lamp on
=
R
elay deenergised
T
he measuring system is immediately ready for operation
.
T
he switching point must no longer be set with
VEGACAP
27
.
T
he probe has an active tip and a screen segment
.
T
hanks to
the screen segment
,
the so called standing capacitance
,
caused by the vessel after installation of the probe
,
is mainly
compensated
.
A
s a default setting
,
the oscillator is adjusted to the basic
capacitance of the probe
.
T
he relay output switching when the
active tip is covered
(
active tip
:
50
…
150
mm
/
2
…
5
.
9
in
)
of
the electrode
.
C
hanging dielectric values of the products
,
such as e
.
g
.
caused in mixing vessels are no problem for the switching
accuracy within the active pin
.
T
he selection of the electrode
length is hence very important because the length of the
electrode determines the switching point
.
T
his switching point
cannot be shifted on the electrode
.
S
witching point adaptation
(
6
)
M
ode adjustment
(
5
)
S
ignal lamp
(
4
)
S
witching point adjustment
VEGACAP
27
- -
double relay
(
DPDT
)
17
S
et up
33758
-
EN
-
070809
Summary of Contents for VEGACAP 27
Page 1: ...Operating Instructions VEGACAP 27 double relay DPDT Capacitive ...
Page 13: ...Fig 4 Inflowing medium VEGACAP 27 double relay DPDT 13 Mounting 33758 EN 070809 ...
Page 34: ...Supplement 34 VEGACAP 27 double relay DPDT 33758 EN 070809 ...
Page 35: ...Supplement VEGACAP 27 double relay DPDT 35 33758 EN 070809 ...