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| 低温热电偶的标定及标定过程中的非线性现象的研究 | |
| 引用本文： | 张鹏,伍宇烨,许煜雄,王如竹. 低温热电偶的标定及标定过程中的非线性现象的研究[J]. 低温物理学报, 2003, 25(1): 51-56 |
| 作者姓名： | 张鹏 伍宇烨 许煜雄 王如竹 |
| 作者单位： | 上海交通大学制冷与低温工程研究所,上海,200030 |
| 基金项目： | 国家自然科学基金，教育部留学回国人员基金项目，上海市教委青年教师基金项目 (2 0 0 0QN2 8)，上海市科技启明星项目 (0 1QF14 0 2 7)的资助项目~~ |
| 摘 要： | 在本中，介绍了一个用于低温热电偶的标定系统的研制，对常用的铜-康铜热电偶进行了标定，并对在标定过程中的热电偶输出信号的脉动现象进行了非线性分析，标定结果表明在从液氮温区（77.35k)到300k的范围内，其标定的精度在数十mK的范围内，能对满足的对测量精度的要求，并且，对信号脉动的分析显示标定过程中存在一定的非线性，可能对标定产生一定的误差。 |
| 关 键 词： | 低温热电偶 标定 非线性 误差 |
| 修稿时间： | 2002-04-15 |
CALIBRATION OF LOW-TEMPERTURE THERMOCOUPLES AND RESEARCH ON RELATED NON-LINEAR PHENOMENA |
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| ZHANG PENG WU YU YE XU YU XIONG WANG RU ZHU Institute of Refrigeration and Cryogenics,Shanghai Jiao Tong University,Shanghai. CALIBRATION OF LOW-TEMPERTURE THERMOCOUPLES AND RESEARCH ON RELATED NON-LINEAR PHENOMENA[J]. Chinese Journal of Low Temperature Physics, 2003, 25(1): 51-56 | |
| Authors: | ZHANG PENG WU YU YE XU YU XIONG WANG RU ZHU Institute of Refrigeration Cryogenics Shanghai Jiao Tong University Shanghai |
| Affiliation: | ZHANG PENG WU YU YE XU YU XIONG WANG RU ZHU Institute of Refrigeration and Cryogenics,Shanghai Jiao Tong University,Shanghai 200030 |
| Abstract: | A calibration system for the low temperature thermocouples is presented in this paper. The type T (Copper vs Copper Nickel) thermocouples are calibrated by using this system, and the non linear phenomena (temperature fluctuations) are also investigated. The calibration results show that the accuracy is about 0.1K in the range of from liquid nitrogen temperature (77.35K) to 300K, which meets the requirements for the measurement of the experiments. Further more, the non linear analysis indicates that the non linearity presents in the calibration, which may produce certain error for the calibration. |
| Keywords: | calibration non linearity thermocouple error |
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