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Thermocouple Reference Tables - Type N  -260 to 490°C

Revised Thermocouple Reference Tables

TYPE N


NONE ESTABLISHED
Thermocouple Grade

Nickel - 14.2%
Chromium - 1.4% Silicon
vs.
Nickel - 4.4% Silicon -
0.1% Magnesium

Extension Grade


MAXIMUM TEMPERATURE RANGE
Thermocouple Grade
- 450 to 2372°F
- 270 to 1300°C
Extension Grade
32 to 392°F
0 to 200°C

LIMITS OF
ERROR
(whichever is Greater)
Standard: 2.2°C or 0.75% Above 0°C
2.2°C or 2.0% Below 0°C
Special: 1.1°C or 0.4%

COMMENTS, BARE WIRE ENVIRONMENT:
Alternative to Type K; More Stable at High Temps

TEMPERATURE
IN DEGREES  °F

REFERENCE JUNCTION
AT 32°F
░C -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 ░C
Thermoelectric Voltage in mV
-260 -4.345 -4.345 -4.344 -4.344 -4.343 -4.342 -4.341 -4.340 -4.339 -4.337 -4.336 -260
-250 -4.336 -4.334 -4.332 -4.330 -4.328 -4.326 -4.324 -4.321 -4.319 -4.316 -4.313 -250
-240 -4.313 -4.310 -4.307 -4.304 -4.300 -4.297 -4.293 -4.289 -4.285 -4.281 -4.277 -240
-230 -4.277 -4.273 -4.268 -4.263 -4.258 -4.254 -4.248 -4.243 -4.238 -4.232 -4.226 -230
-220 -4.226 -4.221 -4.215 -4.209 -4.202 -4.196 -4.189 -4.183 -4.176 -4.169 -4.162 -220
-210 -4.162 -4.154 -4.147 -4.140 -4.132 -4.124 -4.116 -4.108 -4.100 -4.091 -4.083 -210
-200 -4.083 -4.074 -4.066 -4.057 -4.048 -4.038 -4.029 -4.020 -4.010 -4.000 -3.990 -200
-190 -3.990 -3.980 -3.970 -3.960 -3.950 -3.939 -3.928 -3.918 -3.907 -3.896 -3.884 -190
-180 -3.884 -3.873 -3.862 -3.850 -3.838 -3.827 -3.815 -3.803 -3.790 -3.778 -3.766 -180
-170 -3.766 -3.753 -3.740 -3.728 -3.715 -3.702 -3.688 -3.675 -3.662 -3.648 -3.634 -170
-160 -3.634 -3.621 -3.607 -3.593 -3.578 -3.564 -3.550 -3.535 -3.521 -3.506 -3.491 -160
-150 -3.491 -3.476 -3.461 -3.446 -3.431 -3.415 -3.400 -3.384 -3.368 -3.352 -3.336 -150
-140 -3.336 -3.320 -3.304 -3.288 -3.271 -3.255 -3.238 -3.221 -3.205 -3.188 -3.171 -140
-130 -3.171 -3.153 -3.136 -3.119 -3.101 -3.084 -3.066 -3.048 -3.030 -3.012 -2.994 -130
-120 -2.994 -2.976 -2.958 -2.939 -2.921 -2.902 -2.883 -2.865 -2.846 -2.827 -2.808 -120
-110 -2.808 -2.789 -2.769 -2.750 -2.730 -2.711 -2.691 -2.672 -2.652 -2.632 -2.612 -110
-100 -2.612 -2.592 -2.571 -2.551 -2.531 -2.510 -2.490 -2.469 -2.448 -2.428 -2.407 -100
-90 -2.407 -2.386 -2.365 -2.344 -2.322 -2.301 -2.280 -2.258 -2.237 -2.215 -2.193 -90
-80 -2.193 -2.172 -2.150 -2.128 -2.106 -2.084 -2.062 -2.039 -2.017 -1.995 -1.972 -80
-70 -1.972 -1.950 -1.927 -1.905 -1.882 -1.859 -1.836 -1.813 -1.790 -1.767 -1.744 -70
-60 -1.744 -1.721 -1.698 -1.674 -1.651 -1.627 -1.604 -1.580 -1.557 -1.533 -1.509 -60
-50 -1.509 -1.485 -1.462 -1.438 -1.414 -1.390 -1.366 -1.341 -1.317 -1.293 -1.269 -50
-40 -1.269 -1.244 -1.220 -1.195 -1.171 -1.146 -1.122 -1.097 -1.072 -1.048 -1.023 -40
-30 -1.023 -0.998 -0.973 -0.948 -0.923 -0.898 -0.873 -0.848 -0.823 -0.798 -0.772 -30
-20 -0.772 -0.747 -0.722 -0.696 -0.671 -0.646 -0.620 -0.595 -0.569 -0.544 -0.518 -20
-10 -0.518 -0.492 -0.467 -0.441 -0.415 -0.390 -0.364 -0.338 -0.312 -0.286 -0.260 -10
0 -0.260 -0.234 -0.209 -0.183 -0.157 -0.131 -0.104 -0.078 -0.052 -0.026 0.000 0
░C -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 ░C
░C 0 1 2 3 4 5 6 7 8 9 10 ░C
0 0.000 0.026 0.052 0.078 0.104 0.130 0.156 0.182 0.208 0.235 0.261 0
10 0.261 0.287 0.313 0.340 0.366 0.393 0.419 0.446 0.472 0.499 0.525 10
20 0.525 0.552 0.578 0.605 0.632 0.659 0.685 0.712 0.739 0.766 0.793 20
30 0.793 0.820 0.847 0.874 0.901 0.928 0.955 0.983 1.010 1.037 1.065 30
40 1.065 1.092 1.119 1.147 1.174 1.202 1.229 1.257 1.284 1.312 1.340 40
50 1.340 1.368 1.395 1.423 1.451 1.479 1.507 1.535 1.563 1.591 1.619 50
60 1.619 1.647 1.675 1.703 1.732 1.760 1.788 1.817 1.845 1.874 1.902 60
70 1.902 1.930 1.959 1.988 2.016 2.045 2.074 2.102 2.131 2.160 2.189 70
80 2.189 2.218 2.247 2.276 2.305 2.334 2.363 2.392 2.421 2.450 2.480 80
90 2.480 2.509 2.538 2.568 2.597 2.626 2.656 2.685 2.715 2.745 2.774 90
100 2.774 2.804 2.833 2.863 2.893 2.923 2.953 2.983 3.012 3.042 3.072 100
110 3.072 3.102 3.133 3.163 3.193 3.223 3.253 3.283 3.314 3.344 3.374 110
120 3.374 3.405 3.435 3.466 3.496 3.527 3.557 3.588 3.619 3.649 3.680 120
130 3.680 3.711 3.742 3.772 3.803 3.834 3.865 3.896 3.927 3.958 3.989 130
140 3.989 4.020 4.051 4.083 4.114 4.145 4.176 4.208 4.239 4.270 4.302 140
150 4.302 4.333 4.365 4.396 4.428 4.459 4.491 4.523 4.554 4.586 4.618 150
160 4.618 4.650 4.681 4.713 4.745 4.777 4.809 4.841 4.873 4.905 4.937 160
170 4.937 4.969 5.001 5.033 5.066 5.098 5.130 5.162 5.195 5.227 5.259 170
180 5.259 5.292 5.324 5.357 5.389 5.422 5.454 5.487 5.520 5.552 5.585 180
190 5.585 5.618 5.650 5.683 5.716 5.749 5.782 5.815 5.847 5.880 5.913 190
200 5.913 5.946 5.979 6.013 6.046 6.079 6.112 6.145 6.178 6.211 6.245 200
210 6.245 6.278 6.311 6.345 6.378 6.411 6.445 6.478 6.512 6.545 6.579 210
220 6.579 6.612 6.646 6.680 6.713 6.747 6.781 6.814 6.848 6.882 6.916 220
230 6.916 6.949 6.983 7.017 7.051 7.085 7.119 7.153 7.187 7.221 7.255 230
240 7.255 7.289 7.323 7.357 7.392 7.426 7.460 7.494 7.528 7.563 7.597 240
250 7.597 7.631 7.666 7.700 7.734 7.769 7.803 7.838 7.872 7.907 7.941 250
260 7.941 7.976 8.010 8.045 8.080 8.114 8.149 8.184 8.218 8.253 8.288 260
270 8.288 8.323 8.358 8.392 8.427 8.462 8.497 8.532 8.567 8.602 8.637 270
280 8.637 8.672 8.707 8.742 8.777 8.812 8.847 8.882 8.918 8.953 8.988 280
290 8.988 9.023 9.058 9.094 9.129 9.164 9.200 9.235 9.270 9.306 9.341 290
300 9.341 9.377 9.412 9.448 9.483 9.519 9.554 9.590 9.625 9.661 9.696 300
310 9.696 9.732 9.768 9.803 9.839 9.875 9.910 9.946 9.982 10.018 10.054 310
320 10.054 10.089 10.125 10.161 10.197 10.233 10.269 10.305 10.341 10.377 10.413 320
330 10.413 10.449 10.485 10.521 10.557 10.593 10.629 10.665 10.701 10.737 10.774 330
340 10.774 10.810 10.846 10.882 10.918 10.955 10.991 11.027 11.064 11.100 11.136 340
350 11.136 11.173 11.209 11.245 11.282 11.318 11.355 11.391 11.428 11.464 11.501 350
360 11.501 11.537 11.574 11.610 11.647 11.683 11.720 11.757 11.793 11.830 11.867 360
370 11.867 11.903 11.940 11.977 12.013 12.050 12.087 12.124 12.160 12.197 12.234 370
380 12.234 12.271 12.308 12.345 12.382 12.418 12.455 12.492 12.529 12.566 12.603 380
390 12.603 12.640 12.677 12.714 12.751 12.788 12.825 12.862 12.899 12.937 12.974 390
400 12.974 13.011 13.048 13.085 13.122 13.159 13.197 13.234 13.271 13.308 13.346 400
410 13.346 13.383 13.420 13.457 13.495 13.532 13.569 13.607 13.644 13.682 13.719 410
420 13.719 13.756 13.794 13.831 13.869 13.906 13.944 13.981 14.019 14.056 14.094 420
430 14.094 14.131 14.169 14.206 14.244 14.281 14.319 14.357 14.394 14.432 14.469 430
440 14.469 14.507 14.545 14.582 14.620 14.658 14.695 14.733 14.771 14.809 14.846 440
450 14.846 14.884 14.922 14.960 14.998 15.035 15.073 15.111 15.149 15.187 15.225 450
460 15.225 15.262 15.300 15.338 15.376 15.414 15.452 15.490 15.528 15.566 15.604 460
470 15.604 15.642 15.680 15.718 15.756 15.794 15.832 15.870 15.908 15.946 15.984 470
480 15.984 16.022 16.060 16.099 16.137 16.175 16.213 16.251 16.289 16.327 16.366 480
490 16.366 16.404 16.442 16.480 16.518 16.557 16.595 16.633 16.671 16.710 16.748 490
░C 0 1 2 3 4 5 6 7 8 9 10 ░C

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