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| 准绝热开口氩三相点复现装置 | |
| 引用本文： | 孙建平,刘植松,邱萍,张凯.准绝热开口氩三相点复现装置[J].仪器仪表学报,2011,32(6). |
| 作者姓名： | 孙建平 刘植松 邱萍 张凯 |
| 作者单位： | 1. 北京科技大学,北京,100083;中国计量科学研究院,北京,100013 2. 河北大学,保定,071002 3. 中国计量科学研究院,北京,100013 |
| 摘 要： | 氩三相点是ITS-90温标重要的低温固定点和我国国家温度基准固定点.氩三相点复现装置是实现氩三相点复现的基本实验装置.介绍了中国计量科学研究院最新研制的基于准绝热原理的用于长杆铂电阻温度计的开口氩三相点复现装置.该装置可以在降温过程中充入足够量的氩气,保证了足够量的氩气固化,确保了较长的温坪时间,解决了按恒定热流法设计带来的复现性较差、温坪持续时间短等问题.通过采用高精密电桥测量显示:新建氩三相点复现装置温坪持续时间26 h以上,复现性0.04mK,且16 h的温坪变化在0.2 mK以内;使用两支温度计多次测量结果标准偏差均在0.05 mK以内,标准不确定度大于0.2 mk.该装置的研制提高了我国氩三相点的复现水平,保障了国家基准量值的传递,为开展国际比对奠定了基础. |
| 关 键 词： | 准绝热 氩三相点 计量学 |
Open-type argon triple-point device in quasi-adiabatic condition |
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| Sun Jianping,Liu Zhisong,Qiu Ping,Zhang Kai.Open-type argon triple-point device in quasi-adiabatic condition[J].Chinese Journal of Scientific Instrument,2011,32(6). | |
| Authors: | Sun Jianping Liu Zhisong Qiu Ping Zhang Kai |
| Affiliation: | Sun Jianping1,2,Liu Zhisong3,Qiu Ping2,Zhang Kai3(1 University of Science and Technology Beijing,Beijing 100083,China,2 National Institute of Metrology,Beijing 100013,3 Hebei University,Baoding 071002,China) |
| Abstract: | Argon triple-point is not only one of the required most important reference fixed points on International Temperature Scale of 1990(ITS-90),but also one of the national primary fixed points of temperature.Argon triple-point device is the basic instrument in realizing argon triple-point.A new open-type argon triple-point device for calibrating long-stem standard platinum resistance thermometers(SPRTs) in quasi-adiabatic condition has been fabricated in National Institute of Metrology(NIM).A long plateau time... |
| Keywords: | quasi-adiabatic argon triple-point metrology |
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