TABLE 13 Type R Thermocouple ¾ thermoelectric voltage as a function of
temperature (°C); reference junctions at 0 °C
°C 0 1 2 3 4 5 6 7 8 9 10 °C
Thermoelectric Voltage in Millivolts
°C 0 1 2 3 4 5 6 7 8 9 10 °C
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R
°C
-50
-0.226
-50
-40
-0.188
-0.192
-0.196
-0.200
-0.204
-0.208
-0.211
-0.215
-0.219
-0.223
-0.226
-40
-30
-0.145
-0.150
-0.154
-0.158
-0.163
-0.167
-0.171
-0.175
-0.180
-0.184
-0.188
-30
-20
-0.100
-0.105
-0.109
-0.114
-0.119
-0.123
-0.128
-0.132
-0.137
-0.141
-0.145
-20
-10
-0.051
-0.056
-0.061
-0.066
-0.071
-0.076
-0.081
-0.086
-0.091
-0.095
-0.100
-10
0
0.000
-0.005
-0.011
-0.016
-0.021
-0.026
-0.031
-0.036
-0.041
-0.046
-0.051
0
0
0.000
0.005
0.011
0.016
0.021
0.027
0.032
0.038
0.043
0.049
0.054
0
10
0.054
0.060
0.065
0.071
0.077
0.082
0.088
0.094
0.100
0.105
0.111
10
20
0.111
0.117
0.123
0.129
0.135
0.141
0.147
0.153
0.159
0.165
0.171
20
30
0.171
0.177
0.183
0.189
0.195
0.201
0.207
0.214
0.220
0.226
0.232
30
40
0.232
0.239
0.245
0.251
0.258
0.264
0.271
0.277
0.284
0.290
0.296
40
50
0.296
0.303
0.310
0.316
0.323
0.329
0.336
0.343
0.349
0.356
0.363
50
60
0.363
0.369
0.376
0.383
0.390
0.397
0.403
0.410
0.417
0.424
0.431
60
70
0.431
0.438
0.445
0.452
0.459
0.466
0.473
0.480
0.487
0.494
0.501
70
80
0.501
0.508
0.516
0.523
0.530
0.537
0.544
0.552
0.559
0.566
0.573
80
90
0.573
0.581
0.588
0.595
0.603
0.610
0.618
0.625
0.632
0.640
0.647
90
100
0.647
0.655
0.662
0.670
0.677
0.685
0.693
0.700
0.708
0.715
0.723
100
110
0.723
0.731
0.738
0.746
0.754
0.761
0.769
0.777
0.785
0.792
0.800
110
120
0.800
0.808
0.816
0.824
0.832
0.839
0.847
0.855
0.863
0.871
0.879
120
130
0.879
0.887
0.895
0.903
0.911
0.919
0.927
0.935
0.943
0.951
0.959
130
140
0.959
0.967
0.976
0.984
0.992
1.000
1.008
1.016
1.025
1.033
1.041
140
150
1.041
1.049
1.058
1.066
1.074
1.082
1.091
1.099
1.107
1.116
1.124
150
160
1.124
1.132
1.141
1.149
1.158
1.166
1.175
1.183
1.191
1.200
1.208
160
170
1.208
1.217
1.225
1.234
1.242
1.251
1.260
1.268
1.277
1.285
1.294
170
180
1.294
1.303
1.311
1.320
1.329
1.337
1.346
1.355
1.363
1.372
1.381
180
190
1.381
1.389
1.398
1.407
1.416
1.425
1.433
1.442
1.451
1.460
1.469
190
200
1.469
1.477
1.486
1.495
1.504
1.513
1.522
1.531
1.540
1.549
1.558
200
210
1.558
1.567
1.575
1.584
1.593
1.602
1.611
1.620
1.629
1.639
1.648
210
220
1.648
1.657
1.666
1.675
1.684
1.693
1.702
1.711
1.720
1.729
1.739
220
230
1.739
1.748
1.757
1.766
1.775
1.784
1.794
1.803
1.812
1.821
1.831
230
240
1.831
1.840
1.849
1.858
1.868
1.877
1.886
1.895
1.905
1.914
1.923
240
250
1.923
1.933
1.942
1.951
1.961
1.970
1.980
1.989
1.998
2.008
2.017
250
260
2.017
2.027
2.036
2.046
2.055
2.064
2.074
2.083
2.093
2.102
2.112
260
270
2.112
2.121
2.131
2.140
2.150
2.159
2.169
2.179
2.188
2.198
2.207
270
280
2.207
2.217
2.226
2.236
2.246
2.255
2.265
2.275
2.284
2.294
2.304
280
290
2.304
2.313
2.323
2.333
2.342
2.352
2.362
2.371
2.381
2.391
2.401
290
300
2.401
2.410
2.420
2.430
2.440
2.449
2.459
2.469
2.479
2.488
2.498
300
310
2.498
2.508
2.518
2.528
2.538
2.547
2.557
2.567
2.577
2.587
2.597
310
320
2.597
2.607
2.617
2.626
2.636
2.646
2.656
2.666
2.676
2.686
2.696
320
330
2.696
2.706
2.716
2.726
2.736
2.746
2.756
2.766
2.776
2.786
2.796
330
340
2.796
2.806
2.816
2.826
2.836
2.846
2.856
2.866
2.876
2.886
2.896
340
350
2.896
2.906
2.916
2.926
2.937
2.947
2.957
2.967
2.977
2.987
2.997
350
360
2.997
3.007
3.018
3.028
3.038
3.048
3.058
3.068
3.079
3.089
3.099
360
370
3.099
3.109
3.119
3.130
3.140
3.150
3.160
3.171
3.181
3.191
3.201
370
380
3.201
3.212
3.222
3.232
3.242
3.253
3.263
3.273
3.284
3.294
3.304
380
390
3.304
3.315
3.325
3.335
3.346
3.356
3.366
3.377
3.387
3.397
3.408
390