Keithley 2750, Руководство пользователя

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Model 2750 Multimeter/Switch System User’s Manual Temperature Equations F-3
Table F-2
Type E inverse function polynomial
-200°C to 0°C
(-8,825µV to 0µV)
0°C to 1,000°C
(0µV to 76,373µV)
c
0
= 0.0 0.0
c
1
= 1.697 728 8
×
10
-2
1.705 703 5
×
10
-2
c
2
= -4.351 497 0
×
10
-7
-2.330 175 9
×
10
-7
c
3
= -1.585 969 7
×
10
-10
6.543 558 5
×
10
-12
c
4
= -9.250 287 1
×
10
-14
-7.356 274 9
×
10
-17
c
5
= -2.608 431 4
×
10
-17
-1.789 600 1
×
10
-21
c
6
= -4.136 019 9
×
10
-21
8.403 616 5
×
10
-26
c
7
= -3.403 403 0
×
10
-25
-1.373 587 9
×
10
-30
c
8
= -1.156 486 0
×
10
-29
1.062 982 3
×
10
-35
c
9
= -3.244 708 7
×
10
-41
Error: 0.03°C to -0.01°C 0.02°C to -0.02°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-3
Type J inverse function polynomial
-210°C to 0°C
(-8,095µV to 0µV)
0°C to 760°C
(0µV to 42,919µV)
760°C to 1,200°C
(42,919µV to 69,553µV)
c
0
= 0.0 0.0 -3.113 581 87
×
10
3
c
1
= 1.952 826 8
×
10
-2
1.978 425
×
10
-2
3.005 436 84
×
10
-1
c
2
= -1.228 618 5
×
10
-6
-2.001 204
×
10
-7
-9.947 732 30
×
10
-6
c
3
= -1.075 217 8
×
10
-9
1.036 969
×
10
-11
1.702 766 30
×
10
-10
c
4
= -5.908 693 3
×
10
-13
-2.549 687
×
10
-16
-1.430 334 68
×
10
-15
c
5
= -1.725 671 3
×
10
-16
3.585 153
×
10
-21
4.738 860 84
×
10
-21
c
6
= -2.813 151 3
×
10
-20
-5.344 285
×
10
-26
c
7
= -2.396 337 0
×
10
-24
5.099 890
×
10
-31
c
8
= -8.382 332 1
×
10
-29
Error: 0.03°C to -0.05°C 0.04°C to -0.04°C 0.03°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.
2750-900-01.book Page 3 Wednesday, August 3, 2011 7:56 AM