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

被引：0
|
作者：
J. P. Sun
J. T. Zhang
Z. R. Kang
Y. Duan
机构：
[1] University of Science and Technology Beijing,
[2] National Institute of Metrology,undefined
[3] Institute of Metrology of Hebei Province,undefined
来源：
International Journal of Thermophysics | 2010年 / 31卷
关键词：
Fixed points; Interpolation equation; SPRTs; Subrange inconsistency;
D O I：
暂无
中图分类号：
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, Δt, can be simply equal to 59.83c.
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页码：1789 / 1794
页数：5
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