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BESANTEK
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11. 2 Terminals Measurement
P2 C2
Us
i
n
g the 2T
m
e
t
h
od
,
the
r
es
i
st
a
nce
o
f
the
t
e
s
t
leads
a
re added to th
e
r
e
a
di
n
g
s
.
T
hi
s
is not
re
c
o
mm
e
nd
ed for
l
o
w res
i
stance and
l
o
n
g
l
e
a
d
s
.
For measuring resistance, this measuring method can be utilized C1
and P1 terminals are shorted, P2 and C2 are shorted at the tester.
R
P1l
is the Resistance of the Current Lead going to P1
R
P2L
is the Resistance of the Current Lead going to P2
In this case, R
P
1
L
and R
P
2
L
are not negligeable anymore, because
the current going into these leads is the constant current, which is
high. So the error of R
P
1
L
+ R
P2L
exist and in reality, this error is added
to Rx. So, if the resistance under test is much higher than the test
leads, than, this method could be accepted.
This method is a simplified method of measurement.
Always, keep in mind, that RP1 Land RP2L are your error resistance.
This is not an accurate method and is not recommended, unless the
resistance is above 10 ohms.
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