Keithley 2001-TCSCAN - Page 93

Thermocouple Conversion Tables
B-7
Type K
Thermocouples
11
Temperature
Range (¡C) a
0
a
1
a
2
a
3
a
4
Error
Range (µV)
Quartic Equation Argument Exp. Argument Exp. Argument Exp. Argument Exp. Argument Exp.
Exact-
Approx.
-270 to 0 3.9575518 +1 3.1063355 -2 -9.1607995 -5 3.0006628 -8 -1.1 to 1.2
-200 to 0 3.9478446 +1 2.8256412 -2 -1.1488433 -4 -2.8153447 -8 -.08 to .05
-200 to 800 3.6762217 +1 2.4544587 -2 -4.3081993 -5 2.5127588 -8 -180 to 200
-20 to 500 4.0999640 +1 -3.2619221 -3 8.5714137 -6 -1.6912373 -9 -25 to 45
0 to 400 4.0981103 +1 -1.5992510 -4 -1.2525700 -5 3.2784725 -8 -25 to 20
0 to 1370 3.9443859 +1 5.8953822 -3 -4.2015132 -6 1.3917059 -10 -60 to 110
400 to 1000 1.3223524 +3 3.0191663 +1 2.7508912 -2 -2.4734437 -5 6.9799332 -9 -.9 to 1.4
400 to 1370 -3.5456236 +1 3.8349319 +1 9.9993329 -3 -8.7444446 -6 1.7108618 -9 -12 to 11
600 to 800 2.1326086 +3 2.5608012 +1 3.7091744 -2 -3.3517324 -5 9.9607405 -9 -.05 to .07
850 to 1000 -9.0373549 +2 4.0577145 +1 9.5092149 -3 -1.0989249 -5 3.0753213 -9 -.05 to .03
1050 to 1150 -2.5972816 +3 5.2075276 +1 -1.4576419 -2 9.4854151 -6 -3.1178779 -9 -.05 to .05
Reference
Junction
Correction
0 to 50 3.9448872 +1 2.4548362 -2 -9.0918433 -5 -.06 to +.14
11
Quartic approximations to the data as a function of temperature (¡C) in selected temperature ranges.
The expansion is of the form E = a
0
+ a
1
T + a
2
T
2
+ a
3
T
3
+ a
4
T
4
where E is in microvolts and T is in degrees Celsius.
Type K
Thermocouples
12
Temperature
Range (¡C) a
0
a
1
a
2
a
3
a
4
Error
Range (¡C)
Quartic Equation Argument Exp. Argument Exp. Argument Exp. Argument Exp. Argument Exp.
Exact-
Approx.
-270 to 0 1.2329875 -2 -1.4434305 -5 -4.2824995 -9 -4.2028679 -13 -11 to 8
-200 to 0 2.3783697 -2 -2.4382217 -6 -6.8203073 -10 -9.4854031 -14 -.5 to .5
-200 to 800 2.8346886 -2 -5.8008526 -7 2.5720615 -11 -3.6813679 -16 -8 to 10
-20 to 500 2.4363851 -2 5.6206931 -8 -3.8825620 -12 3.9120208 -17 -1.2 to .6
0 to 400 2.4383248 -2 9.7830251 -9 3.6276965 -12 -2.5756438 -16 -.5 to .6
0 to 1370 2.5132785 -2 -6.0883423 -8 5.5358209 -13 9.3720918 -18 -2.4 to 1.2
400 to 1000 -2.4707112 +1 2.9465633 -2 -3.1332620 -7 6.5075717 -12 -3.9663834 -17 -.02 to .02
400 to 1370 6.2300671 +0 2.4955374 -2 -7.8788333 -8 1.3269743 -12 1.5580541 -18 -.3 to .3
600 to 800 -3.9480992 +1 3.1425797 -2 -4.0905633 -7 8.5482602 -12 -5.5696636 -17 -.001 to .001
850 to 1000 -3.1617495 +0 2.7115517 -2 -2.1941995 -7 4.8782826 -12 -2.9316611 -17 -.0012 to .0012
1050 to 1150 2.3615582 +2 1.1066277 -3 8.2516607 -7 -1.3558849 -11 9.1638500 -17 -.001 to .001
12
Quartic approximations to the data as a function of voltage in selected temperature ranges (¡C).
The expansion is of the form T = a
0
+ a
1
E + a
2
E
2
+ a
3
E
3
+ a
4
E
4
where E is in microvolts and T is in degrees Celsius.