PT100 Sensor is a platinum thermal resistance sensor, usually abbreviated as: PT100 platinum resistance. Its resistance value changes along with the change of temperature. Its name PT100 indicates that its resistance value is 100Ω at 0°C, and its resistance value is about 138.5Ω at 100°C. It is widely used in the fields, like editing medical, electrical, industrial, temperature calculation, satellite, meteorology, resistance calculation and other high-precision temperature equipment.
In industrial applications, it is usually used in three-wire, four-wire or two-wire Pt100 thermal resistance signal mode, its accuracy and linearity error level: 0.2 (relative temperature); the commonly used is 3-wire PT100 mode.
When user debugging the PT100 temperature meters, PT100 temperature controllers or related PT100 sensor signal simulation, it needs a precision PT100 simulator box or RTD signal generator. Actually, the PT100 simulator box is a kind of precision resistance simulator box which is designed on the basis of PT100 Resistance Temperature Conversion Table below:
And we have a precision 11 points PT100 simulator box designed based the PT100 resistance value, check details: RTD PT100 Sensor Signal Simulator Box
PT100 Resistance Table
| ℃ | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| Resistance Value（Ω） | ||||||||||
| -200 | 18.52 | |||||||||
| -190 -180 -170 -160 -150 | 22.83 27.10 31.34 35.54 39.72 | 22.40 26.67 30.91 35.12 39.31 | 21.97 26.24 30.49 34.70 38.89 | 21.54 25.82 30.07 34.28 38.47 | 21.11 25.39 29.64 33.86 38.05 | 20.68 24.97 29.22 33.44 37.64 | 20.25 24.54 28.80 33.02 37.22 | 19.82 24.11 28.37 32.60 36.80 | 19.38 23.68 27.95 32.18 36.38 | 18.95 23.25 27.52 31.76 35.96 |
| -140 -130 -120 -110 -100 | 43.88 48.00 52.11 56.19 60.26 | 43.46 47.59 51.70 55.79 59.85 | 43.05 47.18 51.29 55.38 59.44 | 42.63 46.77 50.88 54.97 59.04 | 42.22 46.36 50.47 54.56 58.63 | 41.80 45.94 50.06 54.15 58.23 | 41.39 45.53 49.65 53.75 57.82 | 40.97 45.12 49.24 53.34 57.41 | 40.56 44.70 48.83 52.93 57.01 | 40.14 44.29 48.42 52.52 56.60 |
| -90 -80 -70 -60 -50 | 64.30 68.33 72.33 76.33 80.31 | 63.90 67.92 71.93 75.93 79.91 | 63.49 67.52 71.53 75.53 79.51 | 63.09 67.12 71.13 75.13 79.11 | 62.68 66.72 70.73 74.73 78.72 | 62.28 66.31 70.33 74.33 78.32 | 61.88 65.91 69.93 73.93 77.92 | 61.47 65.51 69.53 73.53 77.52 | 61.07 65.11 69.13 73.13 77.12 | 60.66 64.70 68.73 72.73 76.73 |
| -40 -30 -20 -10 0 | 84.27 88.22 92.16 96.09 100.00 | 83.87 87.83 91.77 95.69 99.61 | 83.48 87.43 91.37 95.30 99.22 | 83.08 87.04 90.98 94.91 98.83 | 82.69 86.64 90.59 94.52 98.44 | 82.29 86.25 90.19 94.12 98.04 | 81.89 85.85 89.80 93.73 97.65 | 81.50 85.46 89.40 93.34 97.26 | 81.10 85.06 89.01 92.95 96.87 | 80.70 84.67 88.62 92.55 96.48 |
| 0 10 20 30 40 | 100.00 103.90 107.79 111.67 115.54 | 100.39 104.29 108.18 112.06 115.93 | 100.78 104.68 108.57 112.45 116.31 | 101.17 105.07 108.96 112.83 116.70 | 101.56 105.46 109.35 113.22 117.08 | 101.95 105.85 109.73 113.61 117.47 | 102.34 106.24 110.12 114.00 117.86 | 102.73 106.63 110.51 114.38 118.24 | 103.12 107.02 110.90 114.77 118.63 | 103.51 107.40 111.29 115.15 119.01 |
| 50 60 70 80 90 | 119.40 123.24 127.08 130.90 134.71 | 119.78 123.63 127.46 131.28 135.09 | 120.17 124.01 127.84 131.66 135.47 | 120.55 124.39 128.22 132.04 135.85 | 120.94 124.78 128.61 132.42 136.23 | 121.32 125.16 128.99 132.80 136.61 | 121.71 125.54 129.37 133.18 136.99 | 122.09 125.93 129.75 133.57 137.37 | 122.47 126.31 130.13 133.95 137.75 | 122.86 126.69 130.52 134.33 138.13 |
| 100 110 120 130 140 | 138.51 142.29 146.07 149.83 153.58 | 138.88 142.67 146.44 150.21 153.96 | 139.26 143.05 146.82 150.58 154.33 | 139.64 143.43 147.20 150.96 154.71 | 140.02 143.80 147.57 151.33 155.08 | 140.40 144.18 147.95 151.71 155.46 | 140.78 144.56 148.33 152.08 155.83 | 141.16 144.94 148.70 152.46 156.20 | 141.54 145.31 149.08 152.83 156.58 | 141.91 145.69 149.46 153.21 156.95 |
| 150 160 170 180 190 | 157.33 161.05 164.77 168.48 172.17 | 157.70 161.43 165.14 168.85 172.54 | 158.07 161.80 165.51 169.22 172.91 | 158.45 162.17 165.89 169.59 173.28 | 158.82 162.54 166.26 169.96 173.65 | 159.19 162.91 166.63 170.33 174.02 | 159.56 163.29 167.00 170.70 174.38 | 159.94 163.66 167.37 171.07 174.75 | 160.31 164.03 167.74 171.43 175.12 | 160.68 164.40 168.11 171.80 175.49 |
| 200 210 220 230 240 | 175.86 179.53 183.19 186.84 190.47 | 176.22 179.89 183.55 187.20 190.84 | 176.59 180.26 183.92 187.56 191.20 | 176.96 180.63 184.28 187.93 191.56 | 177.33 180.99 184.65 188.29 191.92 | 177.69 181.36 185.01 188.66 192.29 | 178.06 181.72 185.38 189.02 192.65 | 178.43 182.09 185.74 189.38 193.01 | 178.79 182.46 186.11 189.75 193.37 | 179.16 182.82 186.47 190.11 193.74 |
| 250 260 270 280 290 | 194.10 197.71 201.31 204.90 208.48 | 194.46 198.07 201.67 205.26 208.84 | 194.82 198.43 202.03 205.62 209.20 | 195.18 198.79 202.39 205.98 209.56 | 195.55 199.15 202.75 206.34 209.91 | 195.91 199.51 203.11 206.70 210.27 | 196.27 199.87 203.47 207.05 210.63 | 196.63 200.23 203.83 207.41 210.98 | 196.99 200.59 204.19 207.77 211.34 | 197.35 200.95 204.55 208.13 211.70 |
| 300 310 320 330 340 | 212.05 215.61 219.15 222.68 226.21 | 212.41 215.96 219.51 223.04 226.56 | 212.76 216.32 219.86 223.39 226.91 | 213.12 216.67 220.21 223.74 227.26 | 213.48 217.03 220.57 224.09 227.61 | 213.83 217.38 220.92 224.45 227.96 | 214.19 217.74 221.27 224.80 228.31 | 214.54 218.09 221.63 225.15 228.66 | 214.90 218.44 221.98 225.50 229.02 | 215.25 218.80 222.33 225.85 229.37 |
| 350 360 370 380 390 | 229.72 233.21 236.70 240.18 243.64 | 230.07 233.56 237.05 240.52 243.99 | 230.42 233.91 237.40 240.87 244.33 | 230.77 234.26 237.74 241.22 244.68 | 231.12 234.61 238.09 241.56 245.02 | 231.47 234.96 238.44 241.91 245.37 | 231.82 235.31 238.79 242.26 245.71 | 232.17 235.66 239.13 242.60 246.06 | 232.52 236.00 239.48 242.95 246.40 | 232.87 236.35 239.83 243.29 246.75 |
| 400 410 420 430 440 | 247.09 250.53 253.96 257.38 260.78 | 247.44 250.88 254.30 257.72 261.12 | 247.78 251.22 254.65 258.06 261.46 | 248.13 251.56 254.99 258.40 261.80 | 248.47 251.91 255.33 258.74 262.14 | 248.81 252.25 255.67 259.08 262.48 | 249.16 252.59 256.01 259.42 262.82 | 249.50 252.93 256.35 259.76 263.16 | 245.85 253.28 256.70 260.10 263.50 | 250.19 253.62 257.04 260.44 263.84 |
| 450 460 470 480 490 | 264.18 267.56 270.93 274.29 277.64 | 264.52 267.90 271.27 274.63 277.98 | 264.86 268.24 271.61 274.96 278.31 | 265.20 268.57 271.94 275.30 278.64 | 265.53 268.91 272.28 275.63 278.98 | 265.87 269.25 272.61 275.97 279.31 | 266.21 269.59 272.95 276.30 279.64 | 266.55 269.92 273.29 276.64 279.98 | 266.89 270.26 273.62 276.97 280.31 | 267.22 270.60 273.96 277.31 280.64 |
| 500 510 520 530 540 | 280.98 284.30 287.62 290.92 294.21 | 281.31 284.63 287.95 291.25 294.54 | 281.64 284.97 288.28 291.58 294.86 | 281.98 285.30 288.61 291.91 295.19 | 282.31 285.63 288.94 292.24 295.52 | 282.64 285.96 289.27 292.56 295.85 | 282.97 286.29 289.60 292.89 296.18 | 283.31 286.62 289.93 293.22 296.50 | 283.64 286.85 290.26 293.55 296.83 | 283.97 287.29 290.59 293.88 297.16 |
| 550 560 570 580 590 | 297.49 300.75 304.01 307.25 310.49 | 297.81 301.08 304.34 307.58 310.81 | 298.14 301.41 304.66 307.90 311.13 | 298.47 301.73 304.98 308.23 311.45 | 298.80 302.06 305.31 308.55 311.78 | 299.12 302.38 305.63 308.87 312.10 | 299.45 302.71 305.96 309.20 312.42 | 299.78 303.03 306.28 309.52 312.74 | 300.10 303.36 306.61 309.84 313.06 | 300.43 303.69 306.93 310.16 313.39 |
| 600 610 620 630 640 | 313.71 316.92 320.12 323.30 326.48 | 314.03 317.24 320.43 323.62 326.79 | 314.35 317.56 320.75 323.94 327.11 | 314.67 317.88 321.07 324.26 327.43 | 314.99 318.20 321.39 324.57 327.74 | 315.31 318.52 321.71 324.89 328.06 | 315.64 318.84 322.03 325.21 328.38 | 315.96 319.16 322.35 325.53 328.69 | 316.28 319.48 322.67 325.84 329.01 | 316.60 319.80 322.98 326.16 329.32 |
| 650 660 | 329.64 332.79 | 329.96 | 330.27 | 330.59 | 330.90 | 331.22 | 331.53 | 331.85 | 332.16 | 332.48 |
When user needs to check and test if a PT100 sensor works accurately or not, using a precision multimeter to measure its’ output resistance value is right or by referring the table above.
Industrial applications, usually PT100 sensor signal is converted to dc current voltage signal for data acquisition and monitoring. The PT100 signal conversion module is a used to interface with PLC, DCS, temperature devices or instruments, etc.