Equations
r
=
t
a
2
C
p
A
2
o
=
t
a
2
C
p
2
d
2
2
2
o
D
t
=
D
Where
,
C
p
Equivalent
parallel
capacitance
[F]
D
Dissipation
factor
t
a
A
verage
thickness
of
test
material
[m]
A
Area
of
Guarded
electrode
[m
2
]
d
Diameter
of
Guarded
electrode
[m]
o
=8.854210
-12
[F/m]
r
Dielectric
constant
of
test
material
D
t
Dissipation
factor
of
test
material
Note
After
you
measure
the
test
material
(or
move
the
electrode)
several
times
,
it
is
recommended
that
you
check
electrode
for
parallelism
(refer
to
\Check
Electrode
P
arallelism
")
and
clean
the
surface
of
electrodes
.
Note
F
or
more
information
on
measuring
accurately
,
refer
to
\Measurement
Error
Analysis".
3-48
Operation
Summary of Contents for 16451B
Page 8: ... C Copyright 2008 Agilent Technologies ...
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Page 56: ...Figure 3 6 Summary of Measurement Methods 3 10 Operation ...
Page 83: ...because a change of temperature causes mechanical dimensions to change Operation 3 37 ...
Page 119: ...Figure 4 4 Cable Connection Diagram Service 4 9 ...
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