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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
55-46 Chemical Variables
55.5.1 Measurement of Conductance and Instrumentation
e conductance G of a solution is the reciprocal of the electrical resistance R and has the units of sie-
mens
(S
)
th
at
co
rrespond
to oh
m
−1
(
−1
). e conductance of a uniform sample with the length l and
cr
oss-sectional
a
rea
A i
s
g
iven
b
y
G
A
l
=
κ
(55.56)
where
th
e
pr
oportionality
co
nstant
κ = 1/ρ (ρ: re
sistivity)
de
scribes
th
e
co
nductivity
(sp
ecic conduc-
tance)
of th
e
so
lution,
ex
pressed
in un
its
of S cm
−1
. e equivalent conductivity Λ (molar conductivity)
of a so
lution
is de
ned
as th
e
co
nductivity
du
e
to on
e
mo
le,
me
asured
be
tween
tw
o
el
ectrodes
th
at
ar
e
sp
aced
1 c ...
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Publisher Resources

ISBN: 9781439848913