ISO/TR 20461:2000 用重量法测定体积不定性
标准编号：ISO/TR 20461:2000
中文名称：用重量法测定体积不定性
英文名称：Determination of uncertainty for volume measurements made using the gravimetric method
发布日期：2000-11
标准范围
本技术报告根据测量不确定度表示指南（GUM）[1]。它使用中指定的重量法ISO 8655-6[2]作为校准活塞操作容积装置的参考方法。已经安排好了为了便于直接了解这类评价的不同方面，可以在以下段落中找到:_通过描述使用计算体积所需的物理方程来对测量进行建模重量法测量；_通过描述与体积V20相关的标准测量不确定度的确定根据GUM的计算程序；_通过计算所有灵敏度系数的示例确定灵敏度系数使用完整的方程、方程的近似值并给出标准的数值条件；_与活塞操作的输送体积相关的标准不确定度的测定给出与体积V20相关的标准不确定度组合的容量装置使用重量测量系统和与由所述设备递送的体积；_测量标准不确定度的测定，简要介绍根据GUM测量装置的不确定度；_确定与体积V20相关联的扩展测量不确定度；体积测量不确定度的确定示例。
This Technical Report gives the detailed evaluation of uncertainty for volume measurements according to theGuide to the Expression of Uncertainty in Measurement (GUM) [1]. It uses the gravimetric method specified inISO 8655-6 [2] as the reference method for calibrating piston-operated volumetric apparatus. It has been arrangedin paragraphs to facilitate direct access to different aspects of this kind of evaluation as follows:_ modelling the measurement by describing the physical equations necessary to calculate the volume using thegravimetric method of measurement;_ determination of the standard uncertainty of measurement associated with the volume V20 by describing thecalculation procedure according to the GUM;_ determination of the sensitivity coefficients with an example of the calculation of all sensitivity coefficients byusing complete equations, approximations of equations and by giving numerical values for standardconditions;_ determination of the standard uncertainty associated with the volume delivered by a piston-operatedvolumetric apparatus giving the combination of the standard uncertainty associated with the volume V20measured using the gravimetric measuring system and the experimental standard deviation associated withthe volume delivered by the apparatus;_ determination of the standard uncertainties of measurement with a brief insight into the calculation ofuncertainties of measuring devices according to GUM;_ determination of the expanded uncertainty of measurement associated with volume V20;_ example of the determination of the uncertainty for volume measurements.
标准预览图
