T
he level switch can also be used in non
-
conductive liquids
such as e
.
g
.
oil
.
T
ypical applications are over
fi
ll and dry run protection
.
T
he capacitive measuring principle places no special require
-
ments on installation
.
H
ence
,
many di
ff
erent applications can
be equipped with
VEGACAP
62
.
T
he instrument can also be used problem
-
free in adhesive
products
.
T
he probe
,
the measured product and the vessel wall form an
electrical capacitor
.
T
he capacitance is in
fl
uenced by three
main factors
:
1
2
3
F
ig
.
2
:
F
unctional principle
-
P
late capacitor
1
D
istance between the electrode surfaces
2
S
ize of the electrode surfaces
3
T
ype of dielectric between the electrodes
T
he probe and the vessel wall are the capacitor plates
.
T
he
measured product is the dielectric
.
D
ue to the higher dielectric
constant
(
DK
value
)
of the product compared to air
,
the
capacitance increases as the probe is gradually covered
.
T
he capacitance change is converted by the oscillator into a
switching command
.
D
epending on your requirements
,
VEGACAP
62
with two
-
wire
electronics can be connected to di
ff
erent signal conditioning
instruments
.
C
ompatible signal conditioning instruments are
listed under
"
T
echnical data
"
.
T
he exact range of the voltage supply is speci
fi
ed in the
"
T
echnical data
"
in the
"
S
upplement
"
.
P
hysical principle
S
upply
VEGACAP
62
-
with two
-
wire output
9
P
roduct description
30007
-
EN
-
060222
