1、Designation: E1751/E1751M 15Standard Guide forTemperature Electromotive Force (emf) Tables for Non-Letter Designated Thermocouple Combinations1This standard is issued under the fixed designation E1751/E1751M; the number immediately following the designation indicates the yearof original adoption or,
2、 in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This guide consists of reference tables that givetemperature-electromotive force
3、 (emf) relationships for specialpurpose, limited use, thermocouple combinations that do nothave a letter designation.1.2 Extension wire or compensating extension wires are notcovered by this guide. ASTM MNL 122or thermocouple alloysuppliers should be consulted.1.3 The values stated in either SI unit
4、s or inch-pound unitsare to be regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem shall be used independently of the other. Combiningvalues from the two systems may result in non-conformancewith the standard.2. Referenced Documents2.1
5、 ASTM Standards:3E344 Terminology Relating to Thermometry and Hydrom-etryE696 Specification for Tungsten-Rhenium Alloy Thermo-couple Wire3. Terminology3.1 Definitions:3.1.1 For definitions of terms used in this guide see Termi-nology E344.3.2 Definitions of Terms Specific to This Standard:3.2.1 matc
6、hed pairs, na set of positive and negativethermoelements chosen so that a thermocouple fabricated fromthese thermoelements will match a specified temperature-electromotive force relationship to within a specified tolerance,at the time of first use.4. Source of Data4.1 The data in these tables are ba
7、sed on the SI Volt and theInternational Temperature Scale of 1990.4.2 All temperatureelectromotive force data in Tables 1-20have been developed from NIST, NRC, and wire manufactur-ers data.4.3 Tables 1-16 give emf values in millivolts to threedecimal places (1 V) at 1C or 1F intervals. Tables 17-20g
8、ive emf values in microvolts to one decimal place (0.1 V) at1C or 1F intervals. If greater precision is required, refer tothe equation and coefficients listed for each thermocouplealloy.5. Significance and Use5.1 These thermocouple combinations have been developedfor specific applications by the wir
9、e manufacturer(s). If addi-tional information is required, consult ASTM MNL 12 or thewire manufacturer.6. Thermocouple Types6.1 Letter symbols have not been assigned. Identification ismade by alloy composition with the thermoelectrically positivematerial listed first.6.1.1 Tungsten versus tungsten-2
10、6 % rhenium.6.1.2 Tungsten-3 % rhenium versus tungsten-25 % rhe-nium.6.1.3 Platinel II.46.1.4 KP versus gold-0.07 % iron.56.1.5 Platinum-5 % molybdenum versus platinum-0.1 %molybdenum.6.1.6 Platinum-40 % rhodium versus platinum-20 % rho-dium.1This guide is under the jurisdiction of ASTM Committee E2
11、0 on TemperatureMeasurement and is the direct responsibility of Subcommittee E20.04 on Thermo-couples.Current edition approved May 1, 2015. Published June 2015. Originallyapproved in 1995. Last previous edition approved in 2009 as E1751_E1751M 091. DOI: 10.1520/E1751_E1751M-15.2“Manual on the Use of
12、 Thermocouples in Temperature Measurement,” ASTMManual, 12, ASTM, 1993.3For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe AST
13、M website.4Trademark of Engelhard Corp., Specialty Metals Division.5Alloy compositions are expressed in percentages by mass, except for thegold-0.07 % iron alloy, which is given in atomic percent.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. Unit
14、ed States16.1.7 Nickel-18 % molybdenum versus nickel-0.8 % co-balt.66.1.8 Iridium-40 % rhodium versus iridium.6.1.9 Gold versus platinum.6.1.10 Platinum versus palladium.7. Tolerances on Initial Values of emf versusTemperature7.1 Tolerances on initial values of emf versus temperaturehave not been es
15、tablished for the thermocouples in this guideexcept for the Tungsten-3 % Rhenium versus Tungsten-25 %Rhenium, and that data can be found in Specification E696.When required, tolerances on initial values of emf versustemperature should be established by agreement between theconsumer and the producer.
16、 These thermocouple combinationsare supplied typically as matched pairs.8. Table Information8.1 The following is a list of emf versus temperature tablesincluded in this guide.Table Number Thermocouple Type Temperature RangeTable 1 Tungsten versus Tungsten-26 % Rhenium 0 to 2315CTable 2 Tungsten vers
17、us Tungsten-26 % Rhenium 32 to 4200FTable 3 Tungsten-3 % Rhenium versusTungsten-25 % Rhenium0 to 2315CTable 4 Tungsten-3 % Rhenium versusTungsten-25 % Rhenium32 to 4200FTable 5 Platinel II 0 to 1395CTable 6 Platinel II 32 to 2543FTable 7 KP versus Gold-0.07 % Iron 273 to 7CTable 8 KP versus Gold-0.0
18、7 % Iron 459 to 44FTable 9 Platinum-5 % Molybdenum versusPlatinum-0.1 % Molybdenum0 to 1600CTable 10 Platinum-5 % Molybdenum versusPlatinum-0.1 % Molybdenum32 to 2912FTable 11 Platinum-40 % Rhodium versusPlatinum-20 % Rhodium0 to 1888CTable 12 Platinum-40 % Rhodium versusPlatinum-20 % Rhodium3 to 34
19、30FTable 13 Nickel-18 % Molybdenum versus Nickel-0.8 % Cobalt50 to 1410CTable 14 Nickel-18 % Molybdenum versus Nickel-0.8 % Cobalt58 to 2570FTable 15 Iridium 40 % Rhodium versus Iridium 0 to 2110CTable 16 Iridium 40 % Rhodium versus Iridium 32 to 3830FTable 17 Gold versus Platinum 0 to 1000CTable 18
20、 Gold versus Platinum 32 to 1832FTable 19 Platinum versus Palladium 0 to 1500CTable 20 Platinum versus Palladium 32 to 2732FTable 21 Polynomial Coefficients for theComputation of Temperatures in C orF as a Function of Thermocouple emf8.2 Tables 1-20 were derived from equations of the form:E 5 c01c1T
21、1c2T21 cnTn(1)where:E = the emf in millivolts (except for Tables 17-20 where E isin microvolts), andT = the temperature in C or F. The coefficients used tocalculate each table are given at the end of the table.8.3 Table 21 gives coefficients of inverse equations that maybe used to compute approximat
22、e values of temperature (T)ineither C or F for each thermocouple combination. Theinverse equations are of the form:T 5 b01b1E1b2E21 bnEn(2)except for the gold versus platinum thermocouple in theranges 209 to 1000C (408.2 to 1832F), where the inverseequation is of the form:T 5 b01(i5111biSE 2 9645762
23、0DI(3)For these equations, the thermocouple emf (E) is in units ofmillivolts, except for gold versus platinum and platinum versuspalladium thermocouples, for which the emf is in units ofmicrovolts.8.3.1 Table 21 also gives the temperature range, emf range,and error range of each inverse equation.9.
24、Keywords9.1 cobalt; coefficients; gold; iridium; iron; molybdenum;nickel; palladium; platinel; platinum; polynomial; rhenium;rhodium; thermocouple; tungstenTABLE 1Tungsten versus Tungsten-26 % Rhenium ThermocouplesThermoelectric Voltage as a Function of Temperature (C), Reference Junctions at 0CC012
25、345678910CThermoelectric Voltage in Millivolts0 0.000 0.001 0.003 0.004 0.005 0.007 0.008 0.010 0.012 0.013 0.015 010 0.015 0.017 0.018 0.020 0.022 0.024 0.026 0.028 0.030 0.032 0.034 1020 0.034 0.036 0.038 0.041 0.043 0.045 0.048 0.050 0.053 0.055 0.058 2030 0.058 0.060 0.063 0.065 0.068 0.071 0.07
26、4 0.076 0.079 0.082 0.085 3040 0.085 0.088 0.091 0.094 0.097 0.100 0.104 0.107 0.110 0.113 0.117 4050 0.117 0.120 0.123 0.127 0.130 0.134 0.138 0.141 0.145 0.148 0.152 5060 0.152 0.156 0.160 0.164 0.168 0.172 0.175 0.179 0.184 0.188 0.192 6070 0.192 0.196 0.200 0.204 0.209 0.213 0.217 0.222 0.226 0.
27、231 0.235 7080 0.235 0.240 0.244 0.249 0.254 0.258 0.263 0.268 0.273 0.277 0.282 8090 0.282 0.287 0.292 0.297 0.302 0.307 0.312 0.318 0.323 0.328 0.333 90100 0.333 0.339 0.344 0.349 0.355 0.360 0.366 0.371 0.377 0.382 0.388 100110 0.388 0.394 0.399 0.405 0.411 0.417 0.422 0.428 0.434 0.440 0.446 110
28、6Nickel-18 % molybdenum versus nickel 0.8 % cobalt is supplied by CarpenterTechnology as 20 alloy and 19 alloy.E1751/E1751M 152TABLE 1 ContinuedTungsten versus Tungsten-26 % Rhenium ThermocouplesThermoelectric Voltage as a Function of Temperature (C), Reference Junctions at 0CC012345678910CThermoele
29、ctric Voltage in Millivolts120 0.446 0.452 0.458 0.464 0.471 0.477 0.483 0.489 0.495 0.502 0.508 120130 0.508 0.514 0.521 0.527 0.534 0.540 0.547 0.553 0.560 0.567 0.573 130140 0.573 0.580 0.587 0.594 0.601 0.607 0.614 0.621 0.628 0.635 0.642 140150 0.642 0.649 0.656 0.664 0.671 0.678 0.685 0.693 0.
30、700 0.707 0.715 150160 0.715 0.722 0.729 0.737 0.744 0.752 0.760 0.767 0.775 0.782 0.790 160170 0.790 0.798 0.806 0.813 0.821 0.829 0.837 0.845 0.853 0.861 0.869 170180 0.869 0.877 0.885 0.893 0.902 0.910 0.918 0.926 0.935 0.943 0.951 180190 0.951 0.960 0.968 0.976 0.985 0.993 1.002 1.011 1.019 1.02
31、8 1.037 190200 1.037 1.045 1.054 1.063 1.072 1.080 1.089 1.098 1.107 1.116 1.125 200210 1.125 1.134 1.143 1.152 1.161 1.170 1.180 1.189 1.198 1.207 1.217 210220 1.217 1.226 1.235 1.245 1.254 1.264 1.273 1.283 1.292 1.302 1.311 220230 1.311 1.321 1.331 1.340 1.350 1.360 1.369 1.379 1.389 1.399 1.409
32、230240 1.409 1.419 1.429 1.439 1.449 1.459 1.469 1.479 1.489 1.499 1.509 240250 1.509 1.520 1.530 1.540 1.550 1.561 1.571 1.582 1.592 1.602 1.613 250260 1.613 1.623 1.634 1.644 1.655 1.666 1.676 1.687 1.698 1.708 1.719 260270 1.719 1.730 1.741 1.752 1.762 1.773 1.784 1.795 1.806 1.817 1.828 270280 1
33、.828 1.839 1.850 1.862 1.873 1.884 1.895 1.906 1.918 1.929 1.940 280290 1.940 1.951 1.963 1.974 1.986 1.997 2.009 2.020 2.032 2.043 2.055 290300 2.055 2.066 2.078 2.090 2.101 2.113 2.125 2.136 2.148 2.160 2.172 300310 2.172 2.184 2.196 2.208 2.219 2.231 2.243 2.255 2.267 2.280 2.292 310320 2.292 2.3
34、04 2.316 2.328 2.340 2.353 2.365 2.377 2.389 2.402 2.414 320330 2.414 2.426 2.439 2.451 2.464 2.476 2.489 2.501 2.514 2.526 2.539 330340 2.539 2.552 2.564 2.577 2.590 2.602 2.615 2.628 2.641 2.653 2.666 340350 2.666 2.679 2.692 2.705 2.718 2.731 2.744 2.757 2.770 2.783 2.796 350360 2.796 2.809 2.822
35、 2.836 2.849 2.862 2.875 2.888 2.902 2.915 2.928 360370 2.928 2.942 2.955 2.968 2.982 2.995 3.009 3.022 3.036 3.049 3.063 370380 3.063 3.076 3.090 3.104 3.117 3.131 3.145 3.158 3.172 3.186 3.200 380390 3.200 3.214 3.227 3.241 3.255 3.269 3.283 3.297 3.311 3.325 3.339 390400 3.339 3.353 3.367 3.381 3
36、.395 3.409 3.423 3.438 3.452 3.466 3.480 400410 3.480 3.494 3.509 3.523 3.537 3.552 3.566 3.580 3.595 3.609 3.624 410420 3.624 3.638 3.653 3.667 3.682 3.696 3.711 3.725 3.740 3.755 3.769 420430 3.769 3.784 3.799 3.813 3.828 3.843 3.858 3.872 3.887 3.902 3.917 430440 3.917 3.932 3.947 3.962 3.977 3.9
37、92 4.007 4.022 4.037 4.052 4.067 440450 4.067 4.082 4.097 4.112 4.127 4.142 4.158 4.173 4.188 4.203 4.219 450460 4.219 4.234 4.249 4.264 4.280 4.295 4.311 4.326 4.341 4.357 4.372 460470 4.372 4.388 4.403 4.419 4.434 4.450 4.465 4.481 4.497 4.512 4.528 470480 4.528 4.544 4.559 4.575 4.591 4.606 4.622
38、 4.638 4.654 4.670 4.685 480490 4.685 4.701 4.717 4.733 4.749 4.765 4.781 4.797 4.813 4.829 4.845 490500 4.845 4.861 4.877 4.893 4.909 4.925 4.941 4.957 4.974 4.990 5.006 500510 5.006 5.022 5.038 5.055 5.071 5.087 5.104 5.120 5.136 5.153 5.169 510520 5.169 5.185 5.202 5.218 5.235 5.251 5.267 5.284 5
39、.300 5.317 5.334 520530 5.334 5.350 5.367 5.383 5.400 5.416 5.433 5.450 5.466 5.483 5.500 530540 5.500 5.517 5.533 5.550 5.567 5.584 5.600 5.617 5.634 5.651 5.668 540550 5.668 5.685 5.702 5.718 5.735 5.752 5.769 5.786 5.803 5.820 5.837 550560 5.837 5.854 5.871 5.888 5.906 5.923 5.940 5.957 5.974 5.9
40、91 6.008 560570 6.008 6.026 6.043 6.060 6.077 6.095 6.112 6.129 6.146 6.164 6.181 570580 6.181 6.198 6.216 6.233 6.250 6.268 6.285 6.303 6.320 6.338 6.355 580590 6.355 6.373 6.390 6.408 6.425 6.443 6.460 6.478 6.495 6.513 6.531 590600 6.531 6.548 6.566 6.583 6.601 6.619 6.636 6.654 6.672 6.690 6.707
41、 600610 6.707 6.725 6.743 6.761 6.778 6.796 6.814 6.832 6.850 6.868 6.886 610620 6.886 6.903 6.921 6.939 6.957 6.975 6.993 7.011 7.029 7.047 7.065 620630 7.065 7.083 7.101 7.119 7.137 7.155 7.173 7.191 7.210 7.228 7.246 630640 7.246 7.264 7.282 7.300 7.319 7.337 7.355 7.373 7.391 7.410 7.428 640650
42、7.428 7.446 7.465 7.483 7.501 7.519 7.538 7.556 7.575 7.593 7.611 650660 7.611 7.630 7.648 7.667 7.685 7.703 7.722 7.740 7.759 7.777 7.796 660670 7.796 7.814 7.833 7.852 7.870 7.889 7.907 7.926 7.944 7.963 7.982 670680 7.982 8.000 8.019 8.038 8.056 8.075 8.094 8.113 8.131 8.150 8.169 680690 8.169 8.
43、187 8.206 8.225 8.244 8.263 8.281 8.300 8.319 8.338 8.357 690E1751/E1751M 153TABLE 1 ContinuedTungsten versus Tungsten-26 % Rhenium ThermocouplesThermoelectric Voltage as a Function of Temperature (C), Reference Junctions at 0CC012345678910CThermoelectric Voltage in Millivolts700 8.357 8.376 8.395 8
44、.414 8.432 8.451 8.470 8.489 8.508 8.527 8.546 700710 8.546 8.565 8.584 8.603 8.622 8.641 8.660 8.679 8.698 8.717 8.737 710720 8.737 8.756 8.775 8.794 8.813 8.832 8.851 8.870 8.890 8.909 8.928 720730 8.928 8.947 8.966 8.986 9.005 9.024 9.043 9.063 9.082 9.101 9.120 730740 9.120 9.140 9.159 9.178 9.1
45、98 9.217 9.236 9.256 9.275 9.295 9.314 740750 9.314 9.333 9.353 9.372 9.392 9.411 9.430 9.450 9.469 9.489 9.508 750760 9.508 9.528 9.547 9.567 9.586 9.606 9.625 9.645 9.665 9.684 9.704 760770 9.704 9.723 9.743 9.763 9.782 9.802 9.821 9.841 9.861 9.880 9.900 770780 9.900 9.920 9.939 9.959 9.979 9.998
46、 10.018 10.038 10.058 10.077 10.097 780790 10.097 10.117 10.137 10.156 10.176 10.196 10.216 10.236 10.256 10.275 10.295 790800 10.295 10.315 10.335 10.355 10.375 10.395 10.414 10.434 10.454 10.474 10.494 800810 10.494 10.514 10.534 10.554 10.574 10.594 10.614 10.634 10.654 10.674 10.694 810820 10.69
47、4 10.714 10.734 10.754 10.774 10.794 10.814 10.834 10.854 10.874 10.894 820830 10.894 10.914 10.934 10.954 10.974 10.995 11.015 11.035 11.055 11.075 11.095 830840 11.095 11.115 11.136 11.156 11.176 11.196 11.216 11.236 11.257 11.277 11.297 840850 11.297 11.317 11.338 11.358 11.378 11.398 11.419 11.4
48、39 11.459 11.479 11.500 850860 11.500 11.520 11.540 11.561 11.581 11.601 11.622 11.642 11.662 11.683 11.703 860870 11.703 11.723 11.744 11.764 11.784 11.805 11.825 11.845 11.866 11.886 11.907 870880 11.907 11.927 11.948 11.968 11.988 12.009 12.029 12.050 12.070 12.091 12.111 880890 12.111 12.132 12.
49、152 12.173 12.193 12.214 12.234 12.255 12.275 12.296 12.316 890900 12.316 12.337 12.357 12.378 12.398 12.419 12.439 12.460 12.481 12.501 12.522 900910 12.522 12.542 12.563 12.583 12.604 12.625 12.645 12.666 12.686 12.707 12.728 910920 12.728 12.748 12.769 12.790 12.810 12.831 12.852 12.872 12.893 12.914 12.934 920930 12.934 12.955 12.976 12.996 13.017 13.038 13.058 13.079 13.100 13.121 13.141 930940 13.141 13.162 13.183 13.204 13.224 13.245 13.266 13.287 13.307 13.328 13.349 940950 13.349 13.370 13.390 13.411 13.432 13.453 13
