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Type K Thermocouples'"
Temperature
Range
(°C)
---·-
.,
....
Quartic Equation
-270 to O
-200 to 0
-200 to 800
-20 to 500
0 to 400
0 to 1370
400
to
1000
400 to 1370
600 to 800
850
to
1000
1050to 1150
ao
a,
Argument
Exp.
Argument
1.2329875
2.3783697
2.8346886
2.4363851
2.4383248
2.5132785
- 2.4707112
+1
2.9465633
6.2300671
+0
2.4955374
-3.9480992
+1
3.1425797
- 3.1617495
+O
2.7115517
2.3615582
+2
1.1066277
-
-~--~----
···-·--
----·------
Exp.
Argument
-2
- 1.4434305
-2
-2.4382217
-2
- 5.8008526
-2
5.6206931
-2
9.7830251
-2
-6.0883423
-2
-3.1332620
-2
- 7.8788333
-2
-4.0905633
-2
-2.1941995
-3
8.2516607
Exp.
Argument
Exp.
-5
- 4.2824995
-9
-6
-6.8203073
-10
-7
2.5720615
-11
-8
-3.8825620
-12
-9
3.6276965
-12
-8
5.5358209
-13
-7
6.5075717
-12
-8
1.3269743
-12
-7
8.5482602
-12
-7
4.8782826
-12
-7
- 1.3558849
-11
Argument
Exp.
- 4.2028679
-13
- 9.4854031
-14
- 3.6813679
-16
3.9120208
-17
-2.5756438
-16
9.3720918
-18
- 3.9663834
-17
1.5580541
-18
- 5.5696636
-17
-2.9316611
-17
9.1638500
-17
Error
Range
(µV)
Exact-Approx.
-11 to 8
-.5to.5
- 8 to 10
-1.2 to .6
- .5 to .6
-2.4 to 1.2
- .02 to .02
- .3 to .3
- .001
to .001
- .0012 to .0012
- .001 to .001
Quadratic, cubic, and quartic approximations to the data as a function of voltage in selected temperature ranges (°Cl. The expansion is of the form
T
=
ao ... a1 E
+
a2E2
+
a3E3
+
a4E4 where E is in microvolts and T is in degrees Celsius.
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