Realization of the Triple Point of Water in Metallic Sealed Cells at the LNE-INM/CNAM: A Progress Report
Realization of the Triple Point of Water in Metallic Sealed Cells at the LNE-INM/CNAM: A Progress Report
复制标题
LNE-INM/CNAM 金属密封电池中水三相点的实现：进度报告
DOI：
10.1007/s10765-008-0400-6
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
Y. Hermier
中科院分区：
文献类型：
--
作者：
F. Sparasci;L. Pitre;Y. Hermier
研制了一种用于水三相点（TPW，温度273.16 K）的微型金属池，用于绝热量热技术实现的胶囊型温度计校准。LNE-INM/Cnam先前开发了一种用于水三相点的铜电池以及清洁、填充和密封技术。在以前工作的基础上，在LNE-INM/Cnam开发并填充了TPW的新铜电池原型。使用适当的量热计和包含几个温度计的比较块进行测量。初步结果表明，当在短期内（1个月）重复测量时，在相变的顺序为0.2 mK的温度测量的分散。在几个月内观察到相变温度的正漂移约为30 μ K·month − 1。研究正在进行中，以改善细胞，减少再现性的不确定性小于0.1 mK，并有一个更好的时间稳定性的相变。
A miniature metallic cell for the water triple point (TPW, temperature 273.16 K) was developed for capsule-type thermometer calibrations for realizations with adiabatic calorimetry techniques. The LNE-INM/Cnam previously developed a copper cell for the water triple point and the techniques for cleaning, filling, and sealing. On the basis of previous work, a new copper cell prototype for the TPW was developed and filled at the LNE-INM/Cnam. Measurements were performed using an appropriate calorimeter and a comparison block containing several thermometers. Preliminary results show a scatter of the temperatures measured at the phase transition of the order of 0.2 mK when measurements are repeated over a short-term period (1 month). A positive drift in the phase transition temperature of about 30μK·month−1was observed over several months. Studies are in progress to improve the cell, to reduce the reproducibility uncertainty to less than 0.1 mK and to have a phase transition with better temporal stability.