TABLE 14 Type R 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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R
°F
-50
-0.210
-0.212
-0.214
-0.216
-0.218
-0.220
-0.222
-0.224
-0.226
-50
-40
-0.188
-0.190
-0.192
-0.194
-0.197
-0.199
-0.201
-0.203
-0.205
-0.208
-0.210
-40
-30
-0.165
-0.167
-0.169
-0.172
-0.174
-0.176
-0.179
-0.181
-0.183
-0.185
-0.188
-30
-20
-0.141
-0.143
-0.145
-0.148
-0.150
-0.153
-0.155
-0.158
-0.160
-0.162
-0.165
-20
-10
-0.116
-0.118
-0.121
-0.123
-0.126
-0.128
-0.131
-0.133
-0.136
-0.138
-0.141
-10
0
-0.090
-0.092
-0.095
-0.097
-0.100
-0.103
-0.105
-0.108
-0.110
-0.113
-0.116
0
0
-0.090
-0.087
-0.084
-0.082
-0.079
-0.076
-0.073
-0.071
-0.068
-0.065
-0.063
0
10
-0.063
-0.060
-0.057
-0.054
-0.051
-0.049
-0.046
-0.043
-0.040
-0.037
-0.035
10
20
-0.035
-0.032
-0.029
-0.026
-0.023
-0.020
-0.017
-0.015
-0.012
-0.009
-0.006
20
30
-0.006
-0.003
0.000
0.003
0.006
0.009
0.012
0.015
0.018
0.021
0.024
30
40
0.024
0.027
0.030
0.033
0.036
0.039
0.042
0.045
0.048
0.051
0.054
40
50
0.054
0.057
0.060
0.064
0.067
0.070
0.073
0.076
0.079
0.082
0.086
50
60
0.086
0.089
0.092
0.095
0.098
0.102
0.105
0.108
0.111
0.114
0.118
60
70
0.118
0.121
0.124
0.127
0.131
0.134
0.137
0.141
0.144
0.147
0.151
70
80
0.151
0.154
0.157
0.161
0.164
0.167
0.171
0.174
0.177
0.181
0.184
80
90
0.184
0.188
0.191
0.194
0.198
0.201
0.205
0.208
0.212
0.215
0.218
90
100
0.218
0.222
0.225
0.229
0.232
0.236
0.239
0.243
0.246
0.250
0.254
100
110
0.254
0.257
0.261
0.264
0.268
0.271
0.275
0.278
0.282
0.286
0.289
110
120
0.289
0.293
0.296
0.300
0.304
0.307
0.311
0.315
0.318
0.322
0.326
120
130
0.326
0.329
0.333
0.337
0.340
0.344
0.348
0.352
0.355
0.359
0.363
130
140
0.363
0.366
0.370
0.374
0.378
0.382
0.385
0.389
0.393
0.397
0.400
140
150
0.400
0.404
0.408
0.412
0.416
0.420
0.423
0.427
0.431
0.435
0.439
150
160
0.439
0.443
0.447
0.450
0.454
0.458
0.462
0.466
0.470
0.474
0.478
160
170
0.478
0.482
0.486
0.489
0.493
0.497
0.501
0.505
0.509
0.513
0.517
170
180
0.517
0.521
0.525
0.529
0.533
0.537
0.541
0.545
0.549
0.553
0.557
180
190
0.557
0.561
0.565
0.569
0.573
0.578
0.582
0.586
0.590
0.594
0.598
190
200
0.598
0.602
0.606
0.610
0.614
0.618
0.623
0.627
0.631
0.635
0.639
200
210
0.639
0.643
0.647
0.652
0.656
0.660
0.664
0.668
0.672
0.677
0.681
210
220
0.681
0.685
0.689
0.693
0.698
0.702
0.706
0.710
0.715
0.719
0.723
220
230
0.723
0.727
0.732
0.736
0.740
0.744
0.749
0.753
0.757
0.761
0.766
230
240
0.766
0.770
0.774
0.779
0.783
0.787
0.792
0.796
0.800
0.805
0.809
240
250
0.809
0.813
0.818
0.822
0.826
0.831
0.835
0.839
0.844
0.848
0.853
250
260
0.853
0.857
0.861
0.866
0.870
0.875
0.879
0.883
0.888
0.892
0.897
260
270
0.897
0.901
0.906
0.910
0.915
0.919
0.923
0.928
0.932
0.937
0.941
270
280
0.941
0.946
0.950
0.955
0.959
0.964
0.968
0.973
0.977
0.982
0.986
280
290
0.986
0.991
0.995
1.000
1.005
1.009
1.014
1.018
1.023
1.027
1.032
290
300
1.032
1.036
1.041
1.046
1.050
1.055
1.059
1.064
1.069
1.073
1.078
300
310
1.078
1.082
1.087
1.092
1.096
1.101
1.105
1.110
1.115
1.119
1.124
310
320
1.124
1.129
1.133
1.138
1.143
1.147
1.152
1.157
1.161
1.166
1.171
320
330
1.171
1.175
1.180
1.185
1.190
1.194
1.199
1.204
1.208
1.213
1.218
330
340
1.218
1.223
1.227
1.232
1.237
1.242
1.246
1.251
1.256
1.261
1.265
340
350
1.265
1.270
1.275
1.280
1.284
1.289
1.294
1.299
1.304
1.308
1.313
350
360
1.313
1.318
1.323
1.328
1.332
1.337
1.342
1.347
1.352
1.356
1.361
360
370
1.361
1.366
1.371
1.376
1.381
1.386
1.390
1.395
1.400
1.405
1.410
370
380
1.410
1.415
1.420
1.425
1.429
1.434
1.439
1.444
1.449
1.454
1.459
380
390
1.459
1.464
1.469
1.473
1.478
1.483
1.488
1.493
1.498
1.503
1.508
390
400
1.508
1.513
1.518
1.523
1.528
1.533
1.538
1.543
1.548
1.553
1.558
400
410
1.558
1.563
1.568
1.572
1.577
1.582
1.587
1.592
1.597
1.602
1.607
410
420
1.607
1.612
1.617
1.622
1.627
1.632
1.638
1.643
1.648
1.653
1.658
420
430
1.658
1.663
1.668
1.673
1.678
1.683
1.688
1.693
1.698
1.703
1.708
430
440
1.708
1.713
1.718
1.723
1.728
1.733
1.739
1.744
1.749
1.754
1.759
440