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Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
book

Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition

by John G. Webster, Halit Eren
February 2014
Intermediate to advanced content levelIntermediate to advanced
1921 pages
82h 13m
English
CRC Press
Content preview from Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
31-11Immittance Measurement
Since the quantities are complex, Equation 31.33 involves the adjustment of two parameters: magnitude
an
d
p
hase
Z
Z
Z
Z
x x
,= = +
1
3
2 1 3 2
ϕ ϕ ϕ ϕ
(3
1
.34
)
or
r
eal
a
nd
i
maginary
p
arts,
r
espectively
.
An i
mportant
p
roperty
o
f
a
n
i
mpedance
b
ridge
i
s
t
he
s
ensitivity
ε
ε
=
=
+
V
Z
V
Z
Z Z
d
x x
2
2
2
( )
(3
1
.35
)
or
(
independent
o
f
Z
x
)
ε
=
+
V
Z
Z Z Z
3
2
2 1 3
2
( )
(3
1
.36
)
in
t
he
v
icinity
o
f
z
ero
c
rossing
w
hen
t
he
b
ridge
i
s
b
alanced
.
e pr
ecision
of th
e
me
asurement
no
t
on
ly
de
pends
on th
e
ex
act
ze
ro
ad
justment,
wh
ich
ca
n
be
enhanced by choosing the elements and the voltage according to Equation 31.36 to obtain a high sensi-
tivity, but also on the
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Publisher Resources

ISBN: 9781439848913