按温度划分的传感器精度
标准允许电阻温度计或热电偶在每个温度下的偏差,逐级列出,并给出把允差换算成欧姆或微伏的灵敏度。需要含变送器和接线的完整测量,请从任意表格打开误差计算器。
PT100 和 PT1000:按温度划分的允差
| 温度 (°C) | PT100 (Ω) | 等级 AA (±°C) | 等级 A (±°C) | 等级 B (±°C) | 等级 C (±°C) | 灵敏度 PT100 (Ω/K) |
|---|---|---|---|---|---|---|
| -196 | 20.25 | — | — | ±1.28 | ±2.56 | 0.4309 |
| -150 | 39.72 | — | — | ±1.05 | ±2.10 | 0.4166 |
| -100 | 60.26 | — | ±0.35 | ±0.80 | ±1.60 | 0.4053 |
| -50 | 80.31 | ±0.19 | ±0.25 | ±0.55 | ±1.10 | 0.3971 |
| 0 | 100.00 | ±0.10 | ±0.15 | ±0.30 | ±0.60 | 0.3908 |
| 50 | 119.40 | ±0.19 | ±0.25 | ±0.55 | ±1.10 | 0.3851 |
| 100 | 138.51 | ±0.27 | ±0.35 | ±0.80 | ±1.60 | 0.3793 |
| 150 | 157.33 | ±0.36 | ±0.45 | ±1.05 | ±2.10 | 0.3735 |
| 200 | 175.86 | ±0.44 | ±0.55 | ±1.30 | ±2.60 | 0.3677 |
| 250 | 194.10 | ±0.53 | ±0.65 | ±1.55 | ±3.10 | 0.3620 |
| 300 | 212.05 | — | ±0.75 | ±1.80 | ±3.60 | 0.3562 |
| 350 | 229.72 | — | ±0.85 | ±2.05 | ±4.10 | 0.3504 |
| 400 | 247.09 | — | ±0.95 | ±2.30 | ±4.60 | 0.3446 |
| 450 | 264.18 | — | ±1.05 | ±2.55 | ±5.10 | 0.3389 |
| 500 | 280.98 | — | — | ±2.80 | ±5.60 | 0.3331 |
| 550 | 297.49 | — | — | ±3.05 | ±6.10 | 0.3273 |
| 600 | 313.71 | — | — | ±3.30 | ±6.60 | 0.3215 |
—:该等级在此温度下未定义。
K 型热电偶:按温度划分的允差
| 温度 (°C) | E (mV) | 等级 1 (±°C) | 等级 2 (±°C) | 等级 3 (±°C) | 灵敏度 (µV/K) |
|---|---|---|---|---|---|
| -200 | -5.891 | — | — | ±3.00 | 15.3 |
| -100 | -3.554 | — | — | ±2.50 | 30.5 |
| -40 | -1.527 | ±1.50 | ±2.50 | ±2.50 | 36.7 |
| 0 | 0.000 | ±1.50 | ±2.50 | ±2.50 | 39.5 |
| 100 | 4.096 | ±1.50 | ±2.50 | — | 41.4 |
| 200 | 8.138 | ±1.50 | ±2.50 | — | 40.0 |
| 300 | 12.209 | ±1.50 | ±2.50 | — | 41.4 |
| 400 | 16.397 | ±1.60 | ±3.00 | — | 42.2 |
| 500 | 20.644 | ±2.00 | ±3.75 | — | 42.6 |
| 600 | 24.905 | ±2.40 | ±4.50 | — | 42.5 |
| 700 | 29.129 | ±2.80 | ±5.25 | — | 41.9 |
| 800 | 33.275 | ±3.20 | ±6.00 | — | 41.0 |
| 900 | 37.326 | ±3.60 | ±6.75 | — | 40.0 |
| 1000 | 41.276 | ±4.00 | ±7.50 | — | 39.0 |
| 1100 | 45.119 | — | ±8.25 | — | 37.9 |
| 1200 | 48.838 | — | ±9.00 | — | 36.5 |
| 1300 | 52.410 | — | — | — | 34.9 |
—:该等级在此温度下未定义。
J 型热电偶:按温度划分的允差
| 温度 (°C) | E (mV) | 等级 1 (±°C) | 等级 2 (±°C) | 等级 3 (±°C) | 灵敏度 (µV/K) |
|---|---|---|---|---|---|
| -200 | -7.890 | — | — | — | 21.9 |
| -100 | -4.633 | — | — | — | 41.1 |
| -40 | -1.961 | ±1.50 | ±2.50 | — | 47.5 |
| 0 | 0.000 | ±1.50 | ±2.50 | — | 50.4 |
| 100 | 5.269 | ±1.50 | ±2.50 | — | 54.4 |
| 200 | 10.779 | ±1.50 | ±2.50 | — | 55.5 |
| 300 | 16.327 | ±1.50 | ±2.50 | — | 55.4 |
| 400 | 21.848 | ±1.60 | ±3.00 | — | 55.2 |
| 500 | 27.393 | ±2.00 | ±3.75 | — | 56.0 |
| 600 | 33.102 | ±2.40 | ±4.50 | — | 58.5 |
| 700 | 39.132 | ±2.80 | ±5.25 | — | 62.2 |
| 750 | 42.281 | ±3.00 | ±5.63 | — | 63.7 |
—:该等级在此温度下未定义。
T 型热电偶:按温度划分的允差
| 温度 (°C) | E (mV) | 等级 1 (±°C) | 等级 2 (±°C) | 等级 3 (±°C) | 灵敏度 (µV/K) |
|---|---|---|---|---|---|
| -200 | -5.603 | — | — | ±3.00 | 15.7 |
| -150 | -4.648 | — | — | ±2.25 | 22.3 |
| -100 | -3.379 | — | — | ±1.50 | 28.4 |
| -50 | -1.819 | — | — | ±1.00 | 33.9 |
| -40 | -1.475 | ±0.50 | ±1.00 | ±1.00 | 34.9 |
| 0 | 0.000 | ±0.50 | ±1.00 | ±1.00 | 38.7 |
| 50 | 2.036 | ±0.50 | ±1.00 | — | 42.8 |
| 100 | 4.279 | ±0.50 | ±1.00 | — | 46.8 |
| 150 | 6.704 | ±0.60 | ±1.13 | — | 50.2 |
| 200 | 9.288 | ±0.80 | ±1.50 | — | 53.1 |
| 250 | 12.013 | ±1.00 | ±1.88 | — | 55.8 |
| 300 | 14.862 | ±1.20 | ±2.25 | — | 58.1 |
| 350 | 17.819 | ±1.40 | ±2.63 | — | 60.2 |
—:该等级在此温度下未定义。
N 型热电偶:按温度划分的允差
| 温度 (°C) | E (mV) | 等级 1 (±°C) | 等级 2 (±°C) | 等级 3 (±°C) | 灵敏度 (µV/K) |
|---|---|---|---|---|---|
| -200 | -3.990 | — | — | ±3.00 | 9.9 |
| -100 | -2.407 | — | — | ±2.50 | 20.9 |
| -40 | -1.023 | ±1.50 | ±2.50 | ±2.50 | 24.8 |
| 0 | 0.000 | ±1.50 | ±2.50 | ±2.50 | 26.2 |
| 100 | 2.774 | ±1.50 | ±2.50 | — | 29.6 |
| 200 | 5.913 | ±1.50 | ±2.50 | — | 33.0 |
| 300 | 9.341 | ±1.50 | ±2.50 | — | 35.4 |
| 400 | 12.974 | ±1.60 | ±3.00 | — | 37.1 |
| 500 | 16.748 | ±2.00 | ±3.75 | — | 38.3 |
| 600 | 20.613 | ±2.40 | ±4.50 | — | 39.0 |
| 700 | 24.527 | ±2.80 | ±5.25 | — | 39.3 |
| 800 | 28.455 | ±3.20 | ±6.00 | — | 39.3 |
| 900 | 32.371 | ±3.60 | ±6.75 | — | 39.0 |
| 1000 | 36.256 | ±4.00 | ±7.50 | — | 38.6 |
| 1100 | 40.087 | — | ±8.25 | — | 38.0 |
| 1200 | 43.846 | — | ±9.00 | — | 37.2 |
| 1300 | 47.513 | — | — | — | 36.0 |
—:该等级在此温度下未定义。
E 型热电偶:按温度划分的允差
| 温度 (°C) | E (mV) | 等级 1 (±°C) | 等级 2 (±°C) | 等级 3 (±°C) | 灵敏度 (µV/K) |
|---|---|---|---|---|---|
| -200 | -8.825 | — | — | ±3.00 | 25.1 |
| -100 | -5.237 | — | — | ±2.50 | 45.2 |
| -40 | -2.255 | ±1.50 | ±2.50 | ±2.50 | 53.9 |
| 0 | 0.000 | ±1.50 | ±2.50 | ±2.50 | 58.7 |
| 100 | 6.319 | ±1.50 | ±2.50 | — | 67.5 |
| 200 | 13.421 | ±1.50 | ±2.50 | — | 74.0 |
| 300 | 21.036 | ±1.50 | ±2.50 | — | 77.9 |
| 400 | 28.946 | ±1.60 | ±3.00 | — | 80.1 |
| 500 | 37.005 | ±2.00 | ±3.75 | — | 80.9 |
| 600 | 45.093 | ±2.40 | ±4.50 | — | 80.7 |
| 700 | 53.112 | ±2.80 | ±5.25 | — | 79.7 |
| 800 | 61.017 | ±3.20 | ±6.00 | — | 78.4 |
| 900 | 68.787 | — | ±6.75 | — | 76.8 |
—:该等级在此温度下未定义。
R 型热电偶:按温度划分的允差
| 温度 (°C) | E (mV) | 等级 1 (±°C) | 等级 2 (±°C) | 等级 3 (±°C) | 灵敏度 (µV/K) |
|---|---|---|---|---|---|
| 0 | 0.000 | ±1.00 | ±1.50 | — | 5.3 |
| 100 | 0.647 | ±1.00 | ±1.50 | — | 7.5 |
| 200 | 1.469 | ±1.00 | ±1.50 | — | 8.8 |
| 300 | 2.401 | ±1.00 | ±1.50 | — | 9.7 |
| 400 | 3.408 | ±1.00 | ±1.50 | — | 10.4 |
| 500 | 4.471 | ±1.00 | ±1.50 | — | 10.9 |
| 600 | 5.583 | ±1.00 | ±1.50 | — | 11.4 |
| 700 | 6.743 | ±1.00 | ±1.75 | — | 11.8 |
| 800 | 7.950 | ±1.00 | ±2.00 | — | 12.3 |
| 900 | 9.205 | ±1.00 | ±2.25 | — | 12.8 |
| 1000 | 10.506 | ±1.00 | ±2.50 | — | 13.2 |
| 1100 | 11.850 | ±1.00 | ±2.75 | — | 13.6 |
| 1200 | 13.228 | ±1.30 | ±3.00 | — | 13.9 |
| 1300 | 14.629 | ±1.60 | ±3.25 | — | 14.1 |
| 1400 | 16.040 | ±1.90 | ±3.50 | — | 14.1 |
| 1500 | 17.451 | ±2.20 | ±3.75 | — | 14.1 |
| 1600 | 18.849 | ±2.50 | ±4.00 | — | 13.9 |
—:该等级在此温度下未定义。
S 型热电偶:按温度划分的允差
| 温度 (°C) | E (mV) | 等级 1 (±°C) | 等级 2 (±°C) | 等级 3 (±°C) | 灵敏度 (µV/K) |
|---|---|---|---|---|---|
| 0 | 0.000 | ±1.00 | ±1.50 | — | 5.4 |
| 100 | 0.646 | ±1.00 | ±1.50 | — | 7.3 |
| 200 | 1.441 | ±1.00 | ±1.50 | — | 8.5 |
| 300 | 2.323 | ±1.00 | ±1.50 | — | 9.1 |
| 400 | 3.259 | ±1.00 | ±1.50 | — | 9.6 |
| 500 | 4.233 | ±1.00 | ±1.50 | — | 9.9 |
| 600 | 5.239 | ±1.00 | ±1.50 | — | 10.2 |
| 700 | 6.275 | ±1.00 | ±1.75 | — | 10.5 |
| 800 | 7.345 | ±1.00 | ±2.00 | — | 10.9 |
| 900 | 8.449 | ±1.00 | ±2.25 | — | 11.2 |
| 1000 | 9.587 | ±1.00 | ±2.50 | — | 11.5 |
| 1100 | 10.757 | ±1.00 | ±2.75 | — | 11.8 |
| 1200 | 11.951 | ±1.30 | ±3.00 | — | 12.0 |
| 1300 | 13.159 | ±1.60 | ±3.25 | — | 12.1 |
| 1400 | 14.373 | ±1.90 | ±3.50 | — | 12.1 |
| 1500 | 15.582 | ±2.20 | ±3.75 | — | 12.0 |
| 1600 | 16.777 | ±2.50 | ±4.00 | — | 11.9 |
—:该等级在此温度下未定义。
B 型热电偶:按温度划分的允差
| 温度 (°C) | E (mV) | 等级 1 (±°C) | 等级 2 (±°C) | 等级 3 (±°C) | 灵敏度 (µV/K) |
|---|---|---|---|---|---|
| 600 | 1.792 | — | ±1.50 | ±4.00 | 6.0 |
| 700 | 2.431 | — | ±1.75 | ±4.00 | 6.8 |
| 800 | 3.154 | — | ±2.00 | ±4.00 | 7.6 |
| 900 | 3.957 | — | ±2.25 | ±4.50 | 8.4 |
| 1000 | 4.834 | — | ±2.50 | ±5.00 | 9.1 |
| 1100 | 5.780 | — | ±2.75 | ±5.50 | 9.8 |
| 1200 | 6.786 | — | ±3.00 | ±6.00 | 10.4 |
| 1300 | 7.848 | — | ±3.25 | ±6.50 | 10.9 |
| 1400 | 8.956 | — | ±3.50 | ±7.00 | 11.3 |
| 1500 | 10.099 | — | ±3.75 | ±7.50 | 11.6 |
| 1600 | 11.263 | — | ±4.00 | ±8.00 | 11.7 |
| 1700 | 12.433 | — | ±4.25 | ±8.50 | 11.7 |
—:该等级在此温度下未定义。
允差的定义方式
IEC 60751 把每个等级在其自身温度范围内定义为 ±(a + b·|t|) °C:AA 为 0.1 + 0.0017·|t|,A 为 0.15 + 0.002·|t|,B 为 0.3 + 0.005·|t|,C 为 0.6 + 0.01·|t|。此处范围针对绕线式元件;薄膜式元件的范围往往更窄,请查数据手册。PT100 和 PT1000 的 °C 限值相同;以欧姆表示时,PT1000 的数值是 PT100 的十倍。
IEC 60584-1 把每个等级定义为固定值或 |t| 的分数(取较大者),适用的温度范围随型号而定。各表按这一规则在每个温度下计算;短横线表示该等级在该温度下未定义。这些限值适用于供货状态的新热电偶丝,不包括使用中的漂移。
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