TABLE 22 Type C Thermocouple ¾ thermoelectric voltage as a function of
temperature (°F); reference junctions at 32 °F
°F 0 1 2 3 4 5 6 7 8 9 10 °F
Thermoelectric Voltage in Millivolts
°F 0 1 2 3 4 5 6 7 8 9 10 °F
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C
°F
500
4.141
4.151
4.160
4.170
4.180
4.190
4.200
4.210
4.220
4.230
4.240
500
510
4.240
4.250
4.260
4.270
4.280
4.290
4.300
4.310
4.320
4.330
4.340
510
520
4.340
4.350
4.360
4.370
4.380
4.390
4.400
4.410
4.420
4.430
4.440
520
530
4.440
4.450
4.460
4.470
4.480
4.490
4.500
4.510
4.520
4.530
4.540
530
540
4.540
4.550
4.561
4.571
4.581
4.591
4.601
4.611
4.621
4.631
4.641
540
550
4.641
4.651
4.661
4.671
4.682
4.692
4.702
4.712
4.722
4.732
4.742
550
560
4.742
4.752
4.762
4.773
4.783
4.793
4.803
4.813
4.823
4.833
4.844
560
570
4.844
4.854
4.864
4.874
4.884
4.894
4.904
4.915
4.925
4.935
4.945
570
580
4.945
4.955
4.965
4.976
4.986
4.996
5.006
5.016
5.027
5.037
5.047
580
590
5.047
5.057
5.067
5.078
5.088
5.098
5.108
5.119
5.129
5.139
5.149
590
600
5.149
5.159
5.170
5.180
5.190
5.200
5.211
5.221
5.231
5.241
5.252
600
610
5.252
5.262
5.272
5.282
5.293
5.303
5.313
5.323
5.334
5.344
5.354
610
620
5.354
5.365
5.375
5.385
5.395
5.406
5.416
5.426
5.437
5.447
5.457
620
630
5.457
5.468
5.478
5.488
5.499
5.509
5.519
5.529
5.540
5.550
5.560
630
640
5.560
5.571
5.581
5.591
5.602
5.612
5.623
5.633
5.643
5.654
5.664
640
650
5.664
5.674
5.685
5.695
5.705
5.716
5.726
5.736
5.747
5.757
5.768
650
660
5.768
5.778
5.788
5.799
5.809
5.820
5.830
5.840
5.851
5.861
5.871
660
670
5.871
5.882
5.892
5.903
5.913
5.924
5.934
5.944
5.955
5.965
5.976
670
680
5.976
5.986
5.996
6.007
6.017
6.028
6.038
6.049
6.059
6.070
6.080
680
690
6.080
6.090
6.101
6.111
6.122
6.132
6.143
6.153
6.164
6.174
6.185
690
700
6.185
6.195
6.205
6.216
6.226
6.237
6.247
6.258
6.268
6.279
6.289
700
710
6.289
6.300
6.310
6.321
6.331
6.342
6.352
6.363
6.373
6.384
6.394
710
720
6.394
6.405
6.415
6.426
6.436
6.447
6.457
6.468
6.478
6.489
6.499
720
730
6.499
6.510
6.520
6.531
6.541
6.552
6.563
6.573
6.584
6.594
6.605
730
740
6.605
6.615
6.626
6.636
6.647
6.657
6.668
6.679
6.689
6.700
6.710
740
750
6.710
6.721
6.731
6.742
6.752
6.763
6.774
6.784
6.795
6.805
6.816
750
760
6.816
6.826
6.837
6.848
6.858
6.869
6.879
6.890
6.901
6.911
6.922
760
770
6.922
6.932
6.943
6.954
6.964
6.975
6.985
6.996
7.007
7.017
7.028
770
780
7.028
7.038
7.049
7.060
7.070
7.081
7.091
7.102
7.113
7.123
7.134
780
790
7.134
7.145
7.155
7.166
7.176
7.187
7.198
7.208
7.219
7.230
7.240
790
800
7.240
7.251
7.262
7.272
7.283
7.293
7.304
7.315
7.325
7.336
7.347
800
810
7.347
7.357
7.368
7.379
7.389
7.400
7.411
7.421
7.432
7.443
7.453
810
820
7.453
7.464
7.475
7.485
7.496
7.507
7.517
7.528
7.539
7.549
7.560
820
830
7.560
7.571
7.581
7.592
7.603
7.613
7.624
7.635
7.646
7.656
7.667
830
840
7.667
7.678
7.688
7.699
7.710
7.720
7.731
7.742
7.753
7.763
7.774
840
850
7.774
7.785
7.795
7.806
7.817
7.827
7.838
7.849
7.860
7.870
7.881
850
860
7.881
7.892
7.903
7.913
7.924
7.935
7.945
7.956
7.967
7.978
7.988
860
870
7.988
7.999
8.010
8.020
8.031
8.042
8.053
8.063
8.074
8.085
8.096
870
880
8.096
8.106
8.117
8.128
8.139
8.149
8.160
8.171
8.182
8.192
8.203
880
890
8.203
8.214
8.225
8.235
8.246
8.257
8.268
8.278
8.289
8.300
8.311
890
900
8.311
8.321
8.332
8.343
8.354
8.364
8.375
8.386
8.397
8.408
8.418
900
910
8.418
8.429
8.440
8.451
8.461
8.472
8.483
8.494
8.504
8.515
8.526
910
920
8.526
8.537
8.548
8.558
8.569
8.580
8.591
8.602
8.612
8.623
8.634
920
930
8.634
8.645
8.655
8.666
8.677
8.688
8.699
8.709
8.720
8.731
8.742
930
940
8.742
8.753
8.763
8.774
8.785
8.796
8.807
8.817
8.828
8.839
8.850
940
950
8.850
8.861
8.871
8.882
8.893
8.904
8.915
8.925
8.936
8.947
8.958
950
960
8.958
8.969
8.979
8.990
9.001
9.012
9.023
9.034
9.044
9.055
9.066
960
970
9.066
9.077
9.088
9.098
9.109
9.120
9.131
9.142
9.153
9.163
9.174
970
980
9.174
9.185
9.196
9.207
9.217
9.228
9.239
9.250
9.261
9.272
9.282
980
990
9.282
9.293
9.304
9.315
9.326
9.337
9.347
9.358
9.369
9.380
9.391
990