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7103 Micro-Bath User’s Guide
Calibration Procedure
50
C
TT
TT
=
−
−
−
44
33
100
1
100 100
1
100
D
TT
TT
=
−
−
−
33
22
100
1
100 100
1
100
ERT=−
43
FRT=−
32
delta
AF BE
DE CF
=
=
−
T
1-3
– Measured temperature using thermometer.
R
1-3
– Value of R from display of 7103 (Press SET and DOWN at the same time.)
where
T
1
and R
1
are the measured temperature and resistance at -25 °C
T
2
and R
2
are the measured temperature and resistance at 0 °C
T
3
and R
3
are the measured temperature and resistance at 65 °C
T
4
and R
4
are the meastured temperature and resistance at 125°C
Compute R0 & ALPHA12.2.2
aTdelta
TT
12
22
100
1
100
=+
−
aTdelta
TT
34
44
100
1
100
=+
−
rzero
Ra Ra
aa
=
=
−
41 23
13
alpha
RR
Ra Ra
=
−
=
24
41 23
delta is the new value of DELTA computed above
Compute BETA12.2.3
X
T
=
−
1
100
1
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