Fluke 7103 - Compute R0 & ALPHA; Compute BETA

7103 Micro-Bath User’s Guide
Calibration Procedure
50
C
TT
TT
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44
33
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1
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D
TT
TT
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22
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ERT
43
FRT
32
delta
AF BE
DE CF
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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
a T delta
TT
12
22
100
1
100
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a T delta
TT
34
44
100
1
100
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rzero
Ra Ra
aa
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41 23
13
alpha
RR
Ra Ra
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24
41 23
delta is the new value of DELTA computed above
Compute BETA12.2.3
X
T
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1
100
1
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