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本标准中运用的温度/电阻关系如下：
-适用范围-200℃至0℃：
Rt=R0[1+At+Bt2+C(t–100℃)t3]
-适用温度范围为0℃至850℃：
Rt=R0[1+At+Bt2)
A=3.9083x10-3°C-1
B=-5.775x10-7°C-2
C=-4.183x10-12°C-4
关于满足上述关系的电阻温度计，温度系数α界说为：
α=(R100-R0)具有确切的价值0.00385055℃
100xR0
R100是100℃时的电阻
R0是0℃时的电阻
公差，Pt100和Pt1000
电阻温度计的公差值分类如下：
公差类 公差（℃）
A 0.15+0.002|t|*
B 0.3+0.005|t|
*|T|=以度为单位的温度模数
摄氏温度不考虑标志。
依据IEC751/ITS-90关系温度与阻力
c ITS-90 0 1 2 3 4 5 6 7 8 9 10 -200 18.52 -190 22.83 22.4 21.97 21.54 21.11 20.68 20.25 19.82 19.38 18.95 18.52 -180 27.1 26.67 26.24 25.82 25.39 24.97 24.54 24.11 23.68 23.25 22.83 -170 31.34 30.91 30.49 30.07 29.64 29.22 28.8 28.37 27.95 27.52 27.1 -160 35.54 35.12 34.7 34.28 33.86 33.44 33.02 32.6 32.18 31.76 31.34 -150 39.72 39.31 38.89 38.47 38.05 37.64 37.22 36.8 36.38 35.96 35.54 -140 43.88 43.46 43.05 42.63 42.22 41.8 41.39 40.97 40.56 40.14 39.72 -130 48 47.59 47.18 46.77 46.36 45.94 45.53 45.12 44.7 44.29 43.88 -120 52.11 51.7 51.29 50.88 50.47 50.06 49.65 49.24 48.83 48.42 48 -110 56.19 55.79 55.38 54.97 54.56 54.15 53.75 53.34 52.93 52.52 52.11 -100 60.26 59.85 59.44 59.04 58.63 58.23 57.82 57.41 57.01 56.6 56.19 -90 64.3 63.9 63.49 63.09 62.68 62.28 61.88 61.47 61.07 60.66 60.26 -80 68.33 67.92 67.52 67.12 66.72 66.31 65.91 65.51 65.11 64.7 64.3 -70 72.33 71.93 71.53 71.13 70.73 70.33 69.93 69.53 69.13 68.73 68.33 -60 76.33 75.93 75.53 75.13 74.73 74.33 73.93 73.53 73.13 72.73 72.33 -50 80.31 79.91 79.51 79.11 78.72 78.32 77.92 77.52 77.12 76.73 76.33 -40 84.27 83.87 83.48 83.08 82.69 82.29 81.89 81.5 81.1 80.7 80.31 -30 88.22 87.83 87.43 87.04 86.64 86.25 85.85 85.46 85.06 84.67 84.27 -20 92.16 91.77 91.37 90.98 90.59 90.19 89.8 89.4 89.01 88.62 88.22 -10 96.09 95.69 95.3 94.91 94.52 94.12 93.73 93.34 92.95 92.55 92.16 0 100 99.61 99.22 98.83 98.44 98.04 97.65 97.26 96.87 96.48 96.09 0 100 100.39 100.78 101.17 101.56 101.95 102.34 102.73 103.12 103.51 103.9 10 103.9 104.29 104.68 105.07 105.46 105.85 106.24 106.63 107.02 107.4 107.79 20 107.79 108.18 108.57 108.96 109.35 109.73 110.12 110.51 110.9 111.29 111.67 30 111.67 112.06 112.45 112.83 113.22 113.61 114 114.38 114.77 115.15 115.54 40 115.54 115.93 116.31 116.7 117.08 117.47 117.86 118.24 118.63 119.01 119.4 50 119.4 119.78 120.17 120.55 120.94 121.32 121.71 122.09 122.47 122.86 123.24 60 123.24 123.63 124.01 124.39 124.78 125.16 125.54 125.93 126.31 126.69 127.08 70 127.08 127.46 127.84 128.22 128.61 128.99 129.37 129.75 130.13 130.52 130.9 80 130.9 131.28 131.66 132.04 132.42 132.8 133.18 133.57 133.95 134.33 134.71 90 134.71 135.09 135.47 135.85 136.23 136.61 136.99 137.37 137.75 138.13 138.51 100 13 138.88 139.26 139.64 140.02 140.4 140.78 141.16 141.54 141.91 142.29 110 142.29 142.67 143.05 143.43 143.8 144.18 144.56 144.94 145.31 145.69 146.07 120 146.07 146.44 146.82 147.2 147.57 147.95 148.33 148.7 149.08 149.46 149.83 130 149.83 150.21 150.58 150.96 151.33 151.71 152.08 152.46 152.83 153.21 153.58 140 153.58 153.96 154.33 154.71 155.08 155.46 155.83 156.2 156.58 156.95 157.33 150 157.33 157.7 158.07 158.45 158.82 159.19 159.56 159.94 160.31 160.68 161.05 160 161.05 161.43 161.8 162.17 162.54 162.91 163.29 163.66 164.03 164.4 164.77 170 164.77 165.14 165.51 165.89 166.26 166.63 167 167.37 167.74 168.11 168.48 180 168.48 168.85 169.22 169.59 169.96 170.33 170.7 171.07 171.43 171.8 172.17 190 172.17 172.54 172.91 173.28 173.65 174.02 174.38 174.75 175.12 175.49 175.86 200 175.86 176.22 176.59 176.96 177.33 177.69 178.06 178.43 178.79 179.16 179.53 210 179.53 179.89 180.26 180.63 180.99 181.36 181.72 182.09 182.46 182.82 183.19 220 183.19 183.55 183.92 184.28 184.65 185.01 185.38 185.74 186.11 186.47 186.84 230 186.84 187.2 187.56 187.93 188.29 188.66 189.02 189.38 189.75 190.11 190.47 240 190.47 190.84 191.2 191.56 191.92 192.29 192.65 193.01 193.37 193.74 194.1 250 194.1 194.46 194.82 195.18 195.55 195.91 196.27 196.63 196.99 197.35 197.71 260 197.71 198.07 198.43 198.79 199.15 199.51 199.87 200.23 200.59 200.95 201.31 270 201.31 201.67 202.03 202.39 202.75 203.11 203.47 203.83 204.19 204.55 204.9 280 204.9 205.26 205.62 205.98 206.34 206.7 207.05 207.41 207.77 208.13 208.48 290 208.48 208.84 209.2 209.56 209.91 210.27 210.63 210.98 211.34 211.7 212.05 300 212.05 212.41 212.76 213.12 213.48 213.83 214.19 214.54 214.9 215.25 215.61 310 215.61 215.96 216.32 216.67 217.03 217.38 217.74 218.09 218.44 218.8 219.15 320 219.15 219.51 219.86 220.21 220.57 220.92 221.27 221.63 221.98 222.33 222.68 330 222.68 223.04 223.39 223.74 224.09 224.45 224.8 225.15 225.5 225.85 226.21 340 226.21 226.56 226.91 227.26 227.61 227.96 228.31 228.66 229.02 229.37 229.72 350 229.72 230.07 230.42 230.77 231.12 231.47 231.82 232.17 232.52 232.87 233.21 360 233.21 233.56 233.91 234.26 234.61 234.96 235.31 235.66 236 236.35 236.7 370 236.7 237.05 237.4 237.74 238.09 238.44 238.79 239.13 239.48 239.83 240.18 380 240.18 240.52 240.87 241.22 241.56 241.91 242.26 242.6 242.95 243.29 243.64 390 243.64 243.99 244.33 244.68 245.02 245.37 245.71 246.06 246.4 246.75 247.09 400 247.09 247.44 247.78 248.13 248.47 248.81 249.16 249.5 249.85 250.19 250.53 410 250.53 250.88 251.22 251.56 251.91 252.25 252.59 252.93 253.28 253.62 253.96 420 253.96 254.3 254.65 254.99 255.33 255.67 256.01 256.35 256.7 257.04 257.38 430 257.38 257.72 258.06 258.4 258.74 259.08 259.42 259.76 260.1 260.44 260.78 440 260.78 261.12 261.46 261.8 262.14 262.48 262.82 263.16 263.5 263.84 264.18 450 264.18 264.52 264.86 265.2 265.53 265.87 266.21 266.55 266.89 267.22 267.56 460 267.56 267.9 268.24 268.57 268.91 269.25 269.59 269.92 270.26 270.6 270.93 470 270.93 271.27 271.61 271.94 272.28 272.61 272.95 273.29 273.62 273.96 274.29 480 274.29 274.63 274.96 275.3 275.63 275.97 276.3 276.64 276.97 277.31 277.64 490 277.64 277.98 278.31 278.64 278.98 279.31 279.64 279.98 280.31 280.64 280.98 500 280.98 281.31 281.64 281.98 282.31 282.64 282.97 283.31 283.64 283.97 284.3 510 284.3 284.63 284.97 285.3 285.63 285.96 286.29 286.62 286.95 287.29 287.62 520 287.62 287.95 288.28 288.61 288.94 289.27 289.6 289.93 290.26 290.59 290.92 530 290.92 291.25 291.58 291.91 292.24 292.56 292.89 293.22 293.55 293.88 294.21 540 294.21 294.54 294.86 295.19 295.52 295.85 296.18 296.5 296.83 297.16 297.49 550 297.49 297.81 298.14 298.47 298.8 299.12 299.45 299.78 300.1 300.43 300.75 560 300.75 301.08 301.41 301.73 302.06 302.38 302.71 303.03 303.36 303.69 304.01 570 304.01 304.34 304.66 304.98 305.31 305.63 305.96 306.28 306.61 306.93 307.25 580 307.25 307.58 307.9 308.23 308.55 308.87 309.2 309.52 309.84 310.16 310.49 590 310.49 310.81 311.13 311.45 311.78 312.1 312.42 312.74 313.06 313.39 313.71 600 313.71 314.03 314.35 314.67 314.99 315.31 315.64 315.96 316.28 316.6 316.92 610 316.92 317.24 317.56 317.88 318.2 318.52 318.84 319.16 319.48 319.8 320.12 620 320.12 320.43 320.75 321.07 321.39 321.71 322.03 322.35 322.67 322.98 323.3 630 323.3 323.62 323.94 324.26 324.57 324.89 325.21 325.53 325.84 326.16 326.48 640 326.48 326.79 327.11 327.43 327.74 328.06 328.38 328.69 329.01 329.32 329.64 650 329.64 329.96 330.27 330.59 330.9 331.22 331.53 331.85 332.16 332.48 332.79 660 332.79 333.11 333.42 333.74 334.05 334.36 334.68 334.99 335.31 335.62 335.93 670 335.93 336.25 336.56 336.87 337.18 337.5 337.81 338.12 338.44 338.75 339.06 680 339.06 339.37 339.69 340 340.31 340.62 340.93 341.24 341.56 341.87 342.18 690 342.18 342.49 342.8 343.11 343.42 343.73 344.04 344.35 344.66 344.97 345.28 700 345.28 345.59 345.9 346.21 346.52 346.83 347.14 347.45 347.76 348.07 348.38 710 348.38 348.69 348.99 349.3 349.61 349.92 350.23 350.54 350.84 351.15 351.46 720 351.46 351.77 352.08 352.38 352.69 353 353.3 353.61 353.92 354.22 354.53 730 354.53 354.84 355.14 355.45 355.76 356.06 356.37 356.67 356.98 357.28 357.59 740 357.59 357.9 358.2 358.51 358.81 359.12 359.42 359.72 360.03 360.33 360.64 750 360.64 360.94 361.25 361.55 361.85 362.16 362.46 362.76 363.07 363.37 363.67 760 363.67 363.98 364.28 364.58 364.89 365.19 365.49 365.79 366.1 366.4 366.7 770 366.7 367 367.3 367.6 367.91 368.21 368.51 368.81 369.11 369.41 369.71 780 369.71 370.01 370.31 370.61 370.91 371.21 371.51 371.81 372.11 372.41 372.71 790 372.71 373.01 373.31 373.61 373.91 374.21 374.51 374.81 375.11 375.41 375.7 800 375.7 376 376.3 376.6 376.9 377.19 377.49 377.79 378.09 378.39 378.68 810 378.68 378.98 379.28 379.57 379.87 380.17 380.46 380.76 381.06 381.35 381.65 820 381.65 381.95 382.24 382.54 382.83 383.13 383.42 383.72 384.01 384.31 384.6 830 384.6 384.9 385.19 385.49 385.78 386.08 386.37 386.67 386.96 387.25 387.55 840 387.55 387.84 388.14 388.43 388.72 389.02 389.31 389.6 389.9 390.19 390.48 850 390.48
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