| 热膜风速计温度校正研究 |
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| 引用本文： | 闻帆,李长武. 热膜风速计温度校正研究[J]. 传感器与微系统, 2006, 25(4): 26-28 |
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| 作者姓名： | 闻帆 李长武 |
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| 作者单位： | 1. 哈尔滨工业大学,交通科学与工程学院,黑龙江,哈尔滨,150090
2. 苏州市计量测试研究所,江苏,苏州,215006 |
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| 摘 要： | 为提高热膜风速计在非恒温流场状况下的测量精度,提出了一种温度自动校正方案。通过对热膜探头的温度特性分析,提出采用铂电阻作为热膜风速计的温度补偿元件。经温度校正后,热膜风速计零点温度漂移可以达到4.8×10-2%FS/℃,灵敏度温度漂移可以达到-1.0×10-2%FS/℃。试验结果表明:利用铂电阻对热膜风速计进行温度自动校正取得了较为理想的效果。
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| 关 键 词： | 热膜探头 热膜风速计 铂电阻 温度校正 温度特性 |
| 文章编号： | 1000-9787（2006）04-0026-03 |
| 收稿时间： | 2005-11-07 |
| 修稿时间： | 2005-11-07 |
Research on temperature calibration with hot-film anemometer |
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| WEN Fan,LI Chang-wu. Research on temperature calibration with hot-film anemometer[J]. Transducer and Microsystem Technology, 2006, 25(4): 26-28 |
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| Authors: | WEN Fan LI Chang-wu |
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| Abstract: | In order to improve the measurement precision for hot-film anemometer(HFA) in nonisothermal flow field,a new automatic correction method is presented.Through analysis of hot-film probe temperature characteristic,platinum resistance is used as hot-film anemometer temperature compensation sensor.After automatic temperature calibration,zero temperature drift of HFA can reach 4.8×10~(-2) %FS/℃ and sensitivity temperature drift may achieve-1.0×10~(-2) %FS/℃.The experiment results show that the HFA which uses the platinum resistance as temperature automatic calibration could obtain an ideal effect. |
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| Keywords: | hot-film probe hot-film anemometer(HFA) platinum resistance temperature calibration temperature characteristic |
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