Investigating the Inconsistency of ITS-90 for SPRTs in the Subrange 0 A°C to 419.527 A°C

被引:9
|
作者
Sun, J. P. [1 ,2 ]
Zhang, J. T. [1 ]
Kang, Z. R. [3 ]
Duan, Y. [1 ]
机构
[1] Natl Inst Metrol, Beijing 100013, Peoples R China
[2] Univ Sci & Technol Beijing, Beijing 100083, Peoples R China
[3] Inst Metrol Hebei Prov, Shijiazhuang 050051, Peoples R China
关键词
Fixed points; Interpolation equation; SPRTs; Subrange inconsistency;
D O I
10.1007/s10765-010-0835-4
中图分类号
O414.1 [热力学];
学科分类号
摘要
The subrange inconsistency is a significant factor to uncertainty in the standard platinum resistance thermometer (SPRT) subranges of the International Temperature Scale of 1990 (ITS-90). This paper investigated the subrange inconsistency between the water-zinc and water-aluminum subranges. The calibration data for 60 SPRTs from four manufacturers were analyzed, and the result confirms that the coefficient c in the interpolation of ITS-90 is available to determine the subrange inconsistency in this temperature range again. The inconsistency, Delta t, can be simply equal to 59.83c.
引用
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页码:1789 / 1794
页数:6
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