开口镓熔点装置的复现及气压修正

doi:10.3969/j.issn.1000-1158.2021.11.07

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摘要中国计量科学研究院自行研制的开口镓熔点装置实现了对镓熔点冻制及复现的自动化,建立了开口镓熔点配置标准铂电阻温度计组成的基准装置。实验结果显示:镓熔点熔化温坪长达50h,镓熔点的复现性为0.1mK,闭口结构与开口结构镓熔点量值差异经过气压修正后由0.13mK减小至0.06mK,镓熔点温度-气压线性拟合曲线所得数值与90温标中给出的镓熔点气压修正系数一致。

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	毛菊林
	孙建平
	卢小丰

关键词 ：计量学, 镓熔点, 气压修正, 开口型结构, 国际温标

Abstract：The open gallium melting point device developed by the National Institute of Metrology in China realized the freezing and reappearance automation of gallium melting point, and established a benchmark device composed of standard platinum resistance thermometers and open gallium melting point. The experimental results showed that the melting temperature plateau of gallium melting point lasted 50h, and the reproducibility of gallium melting point is 0.1mK, the difference between the closed structure and the open structure of gallium melting point container is reduced from 0.13mK to 0.06mK after air pressure correction,the value obtained from the gallium melting point temperature-pressure linear fitting curve is consistent with the correction coefficient of the gallium melting point given in the 90 temperature scale.

Key words： metrology melting point of gallium barometric pressure correction open-type structure international temperature scale

收稿日期: 2020-09-08 发布日期: 2021-12-01

PACS:

TB942

基金资助:国家重点研发计划(2017YFF0205900, 2017YFF0205904);宁夏回族自治区重点研发计划(2020BEG03075)

通讯作者: 孙建平(1978-),陕西眉县人,中国计量科学研究院副研究员,主要从事温度计量及材料热物性研究。Email: sunjp@nim.ac.cn E-mail: 469278090@qq.com

作者简介: 毛菊林(1984-),女,宁夏盐池人,宁夏计量质量检验检测研究院高级工程师,主要从事热工计量研究工作。Email: 469278090@qq.com

引用本文:

毛菊林,孙建平,卢小丰. 开口镓熔点装置的复现及气压修正[J]. 计量学报, 2021, 42(11): 1454-1458.
MAO Ju-lin,SUN Jian-ping,LU Xiao-feng. Reproduction and Barometric Pressure Correction of Open Gallium Melting Point Device. Acta Metrologica Sinica, 2021, 42(11): 1454-1458.

链接本文:

http://jlxb.china-csm.org:81/Jwk_jlxb/CN/10.3969/j.issn.1000-1158.2021.11.07 或 http://jlxb.china-csm.org:81/Jwk_jlxb/CN/Y2021/V42/I11/1454

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