1. College of Metrology & Measurement Engineering, China Jiliang University, Hangzhou, Zhejiang 310018, China
2. Guizhou Province Quality and Safety Traffic Engineering Monioring and Inspection Center Co. Ltd., Guiyang, Guizhou 550081, China
3. Guangxi Fangchenggang Nuclear Power Co. Ltd., Fangchenggang, Guangxi 538001, China
4. National Institute of Metrology, Beijing 100029, China
Abstract：Usually, the length of the platinum resistance thermometer for nuclear power plants is longer than 3meters, even the sensing element length of some thermometers is nearly 3meters. For this reason, the performance evaluation cannot be carried out with the common experimental systems. A special experimental system for these super long stem platinum resistance thermometers for nuclear power plants was designed. The performance of the experimental system was experimentally studied. The temperature stability of the experimental system is better than ±0.015℃. The horizontal and vertical temperature uniformity of the system are better than 0.05℃ and 0.02℃, respectively. The measurement uncertainty of the experimental system is 0.016℃, and the expanded uncertainty is 0.032℃, respectively. The results showed that the experimental system could be used to effectively evaluate the performance of the long stem platinum resistance thermometer.
曾佳旭,潘江,雷珍珍,赵文娟,赵晓东,孙建平. 一种超长杆铂电阻温度计校准装置[J]. 计量学报, 2020, 41(12): 1482-1487.
ZENG Jia-xu,PAN Jiang,LEI Zhen-zhen,ZHAO Wen-juan,ZHAO Xiao-dong,SUN Jian-ping. Apparatus for the Performance Evaluation of Super Long Stem Platinum Resistance Thermometer in Nuclear Power Plant. Acta Metrologica Sinica, 2020, 41(12): 1482-1487.
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2020, Vol. 41 
