Fluke Calibration 6020 Series, Руководство пользователя

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11 Calibration Procedure
Calibration Example
R0 = 100.000
ALPHA = 0.0038500
t
L
= 80.00°C
measured t = 79.843°C
t
H
= 120.00°C
measured t = 119.914°C
Compute errors,
err
L
= 79.843 - 80.00°C = -0.157°C
err
H
= 119.914 - 120.00°C = -0.086°C
Compute R0,
R 0
0 086 80 0 0157 120 0
120 0 80 0
0 00385
′ = −
− −
−
+
( . ) . ( . ) .
. .
.
x x
1 100 000 100115
⎡
⎣
⎢
⎤
⎦
⎥
=
. .
Compute ALPHA,
ALPHA
′ =
+ − − +
( . . )( . ) ( . . )( 1 0 00385 120 0 0157 1 0 00385 80 0 x x
−
−
+
⎡
⎣
⎢
⎤
⎦
⎥
=
0 086
120 0 80 0
1 0 00385 0 0038387
. )
. .
. .
Figure 10 Calibration Example