一种超长杆铂电阻温度计校准装置

doi:10.3969/j.issn.1000-1158.2020.12.06

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Abstract Usually, the length of the platinum resistance thermometer for nuclear power plants is longer than 3meters, even the sensing element length of some thermometers is nearly 3meters. 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.

Key words： metrology platinum resistance thermometer super long stem calibration device pressurized water reactor performance evaluation

Received: 03 April 2019 Published: 08 December 2020

PACS:

TB942

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	Articles by authors
	ZENG Jia-xu
	PAN Jiang
	LEI Zhen-zhen
	ZHAO Wen-juan
	ZHAO Xiao-dong
	SUN Jian-ping

Cite this article:

ZENG Jia-xu,PAN Jiang,LEI Zhen-zhen, et al. Apparatus for the Performance Evaluation of Super Long Stem Platinum Resistance Thermometer in Nuclear Power Plant[J]. Acta Metrologica Sinica, 2020, 41(12): 1482-1487.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2020.12.06 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2020/V41/I12/1482

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