61
11 Calibration Procedure
Calibration Example
D0 = -25.229
DG = 186.974
t
L
= 25.00°C
measured t = 24.869°C
t
H
= 75.00°C
measured t = 74.901°C
Compute errors,
err
L
= 24.869 - 25.00°C = -0.131°C
err
H
= 74.901 - 75.00°C = -0.099°C
Compute D0,
D
0
0131 75 0
25 229
0 099 25 0
25 22
′ = −
− −
− −
− −
(
.
)(
.
(
.
))
(
.
)(
.
(
.
9
75 0
25 0
25 229
25 392
))
.
.
(
.
)
.
−
+ −
= −
Compute DG,
DG
′ = −
− −
−
+
⎡
⎣
⎢
⎤
⎦
⎥
=
(
.
) (
.
)
.
.
.
.
0 099
0131
75 0
25 0
1 186 974
187 094
Figure 10
Sample calibration computations
