| 测定小惯性热电偶时间常数新法 |
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| 引用本文： | 仇国富,孟繁荣.测定小惯性热电偶时间常数新法[J].南京工程学院学报(社会科学版),2002,2(1). |
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| 作者姓名： | 仇国富 孟繁荣 |
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| 作者单位： | 1. 南京理工大学机械工程学院,江苏,南京,210094
2. 南京工程学院材料工程系,江苏,南京,210013 |
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| 摘 要： | 研究了用电加热法解决用于动态气流温度测量的小惯性热电偶时间常数的实验测定问题。提出采取在稳定气流场中用电加热热电偶然后迅速切断电源的方法 ,获取较为理想的负温度阶跃 ,进而由热电偶的阶跃响应曲线求得时间常数。设计了相应的设备 ,并进行了实验测定 ,获得了较好的结果。
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| 关 键 词： | 热电偶 时间常数 阶跃响应 温度测量 |
A New Method to Determine the Response Time of Thermocouples |
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| QIU Guo-fu,MEN Fan-rong.A New Method to Determine the Response Time of Thermocouples[J].Journal of Nanjing Institute of Technology:Social Science Edition,2002,2(1). |
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| Authors: | QIU Guo-fu MEN Fan-rong |
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| Abstract: | This paper studies the method of measuring the time constant of the fast thermocouples which are used to measure a dynamic temperature in air flows . A thermocouple is heated by an electric current in a cool stable air flow , then the current is cut off quickly to produce an ideal negative temperature step. According to the step response, the thermocouple's time constant is obtained. The experiment devices are designed, and good results have been achieved in the experiments |
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| Keywords: | thermocouple time constant step response temperature measurement |
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