Keithley 2750, Руководство пользователя

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F-4 Temperature Equations Model 2750 Multimeter/Switch System User’s Manual
Table F-4
Type K inverse function polynomial
-200°C to 0°C
(-5,891µV to 0µV)
0°C to 500°C
(0µV to 20,644µV)
500°C to 1,372°C
(20,644µV to 54,886µV)
c
0
= 0.0 0.0 -1.318 058
×
10
2
c
1
= 2.517 346 2
×
10
-2
2.508 355 2
×
10
-2
4.830 222
×
10
-2
c
2
= -1.166 287 8
×
10
-6
7.860 106 2
×
10
-8
-1.646 031
×
10
-6
c
3
= -1.083 363 8
×
10
-9
-2.503 131 2
×
10
-10
5.464 731
×
10
-11
c
4
= -8.977 354 0
×
10
-13
8.315 270 2
×
10
-14
-9.650 715
×
10
-16
c
5
= -3.734 237 7
×
10
-16
-1.228 034 2
×
10
-17
8.802 193
×
10
-21
c
6
= -8.663 264 3
×
10
-20
9.804 036 2
×
10
-22
-3.110 810
×
10
-26
c
7
= -1.045 059 8
×
10
-23
-4.413 030 2
×
10
-26
c
8
= -5.192 057 7
×
10
-28
1.057 734 2
×
10
-30
c
9
= -1.052 755 2
×
10
-35
Error: 0.04°C to -0.02°C 0.04°C to -0.05°C 0.06°C to -0.05°C
t
90
= c
0
+ c
1
E + c
2
E
2
+ c
3
E
3
... c
i
E
i
where: t
90
is the calculated temperature in °C.
E is the measured voltage in microvolts.
Table F-5
Type N inverse function polynomial
-200°C to 0°C
(-3,990µV to 0µV)
0°C to 600°C
(0uV to 20,613µV)
600°C to 1,300°C
(20,613µV to 47,513µV)
c
0
= 0.0 0.0 1.972 485
×
10
1
c
1
= 3.843 684 7
×
10
-2
3.868 96
×
10
-2
3.300 943
×
10
-2
c
2
= 1.101 048 5
×
10
-6
-1.082 67
×
10
-6
-3.915 159
×
10
-7
c
3
= 5.222 931 2
×
10
-9
4.702 05
×
10
-11
9.855 391
×
10
-12
c
4
= 7.206 052 5
×
10
-12
-2.121 69
×
10
-18
-1.274 371
×
10
-16
c
5
= 5.848 858 6
×
10
-15
-1.172 72
×
10
-19
7.767 022
×
10
-22
c
6
= 2.775 491 6
×
10
-18
5.392 80
×
10
-24
c
7
= 7.707 516 6
×
10
-22
-7.981 56
×
10
-29
c
8
= 1.158 266 5
×
10
-25
c
9
= 7.313 886 8
×
10
-30
Error: 0.03°C to -0.02°C 0.03°C to -0.02°C 0.02°C to -0.04°C
t
90
= c
0
+ c
1
E + c
2
E
2
+ c
3
E
3
... c
i
E
i
where: t
90
is the calculated temperature in °C.
E is the measured voltage in microvolts.
2750-900-01.book Page 4 Wednesday, August 3, 2011 7:56 AM