10
UNDERSTANDING
LVCN
‐
40
SERIES
Step
Six
Example
#2
(Current
Output):
in
the
illustrations
below,
the
4mA
signal
is
set
at
0”
(0.0
gallons)
and
the
20
mA
signal
is
set
to
60”
(600.0
gallons).
In
the
Vertical
Cylindrical
Tank,
40”
of
liquid
will
output
a
current
signal
of
14.67mA.
However,
in
the
Horizontal
Cylindrical
Tank
with
End
Caps,
40”
of
liquid
will
output
a
current
signal
of
15.41mA.
A
simple
loop
display
set
with
4mA
=
0
gallons
and
20
mA
=
600
gallons
will
show
two
different
volumes
based
upon
the
tank
shape
configuration.
Vertical
Cylindrical
Tank
will
show
400.0
gallons
while
Horizontal
Cylindrical
Tank
with
End
Caps
will
show
428.0
gallons.
Vertical
Cylindrical
Tank
10”
of
liquid
will
always
be
equal
to
100
gallons
of
liquid
(1”
=
10
gallons).
Horizontal
Cylinder
Tank
with
End
Caps
1”
of
liquid
does
not
equal
10
gallons.
The
10”
at
the
bottom
represents
a
rise
of
62.8
gallons
where
the
change
between
10”
and
20”
represents
an
increase
of
109.6
gallons.
