Keithley 2001-TCSCAN - Page 94

Thermocouple Conversion Tables
B-8
Type T
Thermocouples
13
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 3.9439919 +1 6.2407452 -2 8.0773568 -5 2.6845647 -7 -9 to 7
-200 to 0 3.8749056 +1 4.5149809 -2 4.7759448 -5 -2.5773959 -8 -.14 to .13
-200 to 400 3.8621703 +1 4.5433050 -2 -3.4731838 -5 1.4661300 -8 -7 to 3.5
0 to 400 3.8468407 +1 4.6651731 -2 -3.7375793 -5 1.5999833 -8 -.9 to .9
Reference
Junction
Correction
0 to 50 3.8709457 +1 3.7085566 -2 5.6495520 -5 -.1 to .1
13
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 T
Thermocouples
14
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 4.3553379 -3 -2.0325426 -5 -5.4720813 -9 -5.0865527 -13 -8 to 6
-200 to 0 2.3837090 -2 -2.9878839 -6 -7.1945810 -10 -1.0041943 -13 -.3 to .3
-200 to 400 2.6792411 -2 -1.0370271 -6 6.1330327 -11 -1.3988385 -15 -6 to 5
0 to 400 2.5661297 -2 -6.1954869 -7 2.2181644 -11 -3.5500900 -16 -.15 to .17
14
Quartic approximations to the data as a function of temperature (¡C) in selected temperature ranges.
The expansion is of the form T = a0 + 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.