10
SPECIFICATIONS
(capacitance)
Step
Two
Capacitance
Switch
(LVC
‐
152
series):
The
capacitance
level
switch
generates
a
pulse
‐
wave
radio
frequency
signal
from
the
capacitance
electrode
located
in
the
sensing
tip
of
each
sensor.
When
liquid
comes
into
contact
with
the
sensing
tip,
the
capacitance
as
measured
by
the
sensor
changes
based
on
the
dielectric
constant
of
the
liquid.
The
guard
circuit
rejects
the
negative
effects
of
coating
buildup
on
the
probe
by
eliminating
the
coating
signal
path
between
the
active
and
reference
electrodes.
Avoid
installing
the
LVC
‐
152
series
in
metal
fittings
and
keep
the
sensor
6”
away
from
metal
objects.
It
is
possible
for
a
large
metal
object
to
influence
the
sensor’s
operation.
LVC
‐
152
‐
R
LVC
‐
152
‐
G
‐
R
The
sensor’s
operation
may
vary
based
on
the
dielectric
properties
of
various
application
liquids.
The
LVC
‐
152
series
sensor
is
factory
‐
calibrated
to
be
used
with
liquids
with
a
dielectric
value
between
20
and
80.
Liquids
with
a
dielectric
constant
less
than
20
will
not
be
detected
by
an
LVC
‐
152
series
sensor.
Table
of
Common
Dielectric
Constants:
NOTE:
Liquids
with
a
dielectric
constant
less
than
20
will
not
be
detected
by
an
LVC
‐
152
series
level
switch.
Acetone ....................... 21
Acetoaldehyde ......... 22.2
Acetyl methyl hexyl
ketone ......................... 28
Alcohol .............. 16 to 31
Ammonia ........... 15 to 25
Acetic acid ....... 4.1 to 6.2
Butyl chloride ............ 9.6
Barium chloride ... 9 to 11
Benzene ..................... 2.3
Benzine ...................... 2.3
Barium nitrate ............ 5.6
Bromine ..................... 3.1
Chlorobenzene ... 4.7 to 6
Chlorotoluene ............ 4.7
Chloroform ...... 4.5 to 5.0
Chlorine, liquid ......... 2.0
Carbon tetrachloride . 2.2
Cyan .......................... 2.6
Cyclohexane methanol
................................... 3.7
D.I. Water .................. 20
Ethyl toluene ............. 2.2
Ethyl alcohol .............. 23
Ethylene glycol .......... 37
Ethylene oxide ........... 14
Ethylene dichloride
........................... 11 to 17
Ethylene chloride .... 10.5
Ethyl acetate ............. 6.4
Ethyl salicylate ......... 8.6
Ethyl stearate ............ 2.9
Ethyl silicote ............ 4.1
Formic acid ............... 59
Ferric oleate .............. 2.6
Freon ........................ 2.2
Glycerine ................... 47
Glycol ........................ 30
Glycol nitrite ............. 27
Gasoline ............ 2 to 2.2
Hydrochloric acid .... 4.6
Isobutyric acid .......... 2.7
Isobutyl methyl ketone
.................................... 13
Jet fuel ...................... 1.7
Lead carbonate .......... 18
Lead nitrate ............... 38
Methyl salicylate ...... 9.0
Methanol ..................... 33
Methyl alcohol .. 33 to 38
Margarine, liquid
.......................... 2.8 to 3.2
Methyl acetate ............7.3
N-butyl formate ..........2.4
Nitrobenzene ..... 26 to 35
Nitrotoluene ................ 25
Naphthalene ..... 2.3 to 2.5
Oils, vegetable .................
Oils, mineral .... 2.3 to 2.4
Oils, petroleum .................
Oleic acid ....................2.5
Propane, liquid
......................... 1.8 to 1.9
Potassium nitrate5.0 to 5.9
Potassium chloride ... 5.0
Stearic acid ................ 2.3
Toluene ..................... 2.4
Trichloroethylene ..... 3.4
Trichloroacetic acid .. 4.5
Terephthalic acid
.......................... 1.5 to 1.7
Thinner ...................... 3.7
Urea ........................... 3.5
Vinyl chloride .... 2.8 to 6
Vinyl alcohol .. 1.8 to 2.0
Water, 20°C ............... 80
Water, 100°C ............. 48