ISO/IEC GUIDE 98-3:2008由国际标准化组织 IX-ISO 发布于 2008-09-30。
ISO/IEC GUIDE 98-3:2008 在中国标准分类中归属于: A50 计量综合,在国际标准分类中归属于: 17.020 计量学和测量综合。
ISO/IEC GUIDE 98-3:2008 测量的不确定性.第3部分:测量不确定性的表达指南(GUM-1995)的最新版本是哪一版?
最新版本是 ISO/IEC Guide 98-3:2008/Suppl 2:2011 。
1.1 This Guide establishes general rules for evaluating and expressing uncertainty in measurement that can be followed at various levels of accuracy and in many fields — from the shop floor to fundamental research. Therefore, the principles of this Guide are intended to be applicable to a broad spectrum of measurements, including those required for: -maintaining quality control and quality assurance in production; -complying with and enforcing laws and regulations; -conducting basic research, and applied research and development, in science and engineering; -calibrating standards and instruments and performing tests throughout a national measurement system in order to achieve traceability to national standards; -developing, maintaining, and comparing international and national physical reference standards, including reference materials. 1.2 This Guide is primarily concerned with the expression of uncertainty in the measurement of a well-defined physical quantity — the measurand — that can be characterized by an essentially unique value. If the phenomenon of interest can be represented only as a distribution of values or is dependent on one or more parameters, such as time, then the measurands required for its description are the set of quantities describing that distribution or that dependence. 1.3 This Guide is also applicable to evaluating and expressing the uncertainty associated with the conceptual design and theoretical analysis of experiments, methods of measurement, and complex components and systems. Because a measurement result and its uncertainty may be conceptual and based entirely on hypothetical data, the term “result of a measurement” as used in this Guide should be interpreted in this broader context. 1.4 This Guide provides general rules for evaluating and expressing uncertainty in measurement rather than detailed, technology-specific instructions. Further, it does not discuss how the uncertainty of a particular measurement result, once evaluated, may be used for different purposes, for example, to draw conclusions about the compatibility of that result with other similar results, to establish tolerance limits in a manufacturing process, or to decide if a certain course of action may be safely undertaken. It may therefore be necessary to develop particular standards based on this Guide that deal with the problems peculiar to specific fields of measurement or with the various uses of quantitative expressions of uncertainty.* These standards may be simplified versions of this Guide but should include the detail that is appropriate to the level of accuracy and complexity of the measurements and uses addressed.
溯源和评估测量不确定度的目的是实现被测量之结果的跨时空可比性,基于此点,制定一些评估指南,将会利于实验室操作,比如: - 重要的需评估的测量不确定度分量指南(界定信息利用的范围); - 表达不确定度的估值的方法指南(如:利用标准差、经验数据等) - 检验结果的表达和使用指南(如:何时需要测量不确定度) 此外,检验参数的可接受“目标不确定度”是我国检验界面临的新的挑战...
第1阶段方法设计与开发在第1阶段的准备过程中定义一个分析目标特征(ATP),展示方法性能特征如何符合所需标准,并考虑总体测量的不确定性。通过质量源于设计(QbD)概念深入了解方法性能的影响因素,帮助您从一开始就确保方法的稳定性。第2阶段方法性能评估验证阶段可证明方法按照预期运行,并且可以始终提供高质量数据。有效实现自动化方法验证工作流程非常重要,能够确保数据符合验证要求。...
对于所有重视结果质量和可靠性的实验室来说,选择经ISO 17025认证的校准实验室至关重要,因为它可以保证以下几点:所有测量都可追溯到国家和国际方法和标准移液器和测量过程的不确定性都被考虑在内您可以清楚地确定哪些不确定性是由移液器性能引起,哪些是由测量过程的不确定性引起,例如所使用的天平颁发证书的实验室已获得独立专家和权威机构的批准。...
该QApp采用EURAMET(欧洲国家计量院协会)校准指南第18号中规定的公式和流程来计算测量不确定度:非自动称重仪器校准指南。对于特定的设备,天平用户可以从赛多利斯等服务供应商进行现场校准后所颁发的校准证书中获得“使用中的不确定度”的相应公式,公式的参数可输入到该QApp中。降低测量不确定度无论测量的不确定度是如何获得的,用户都可以在称重过程中采取很多措施来降低测量的不确定度。...
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