ISO, IEC Release Electronic Version of GUM - ISO Guide 98-3
October 31, 2008 // Published as a news service by IHS
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The International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC) published the first of a planned series of guidance documents on the uncertainty of measurement.
ISO/IEC Guide 98-3:2008 - Uncertainty of measurement - Part 3: Guide to the expression of uncertainty in measurement (GUM:1995), is a reissue of the 1995 version of the Guide to the Expression of Uncertainty in Measurement (GUM), with minor corrections.
The new guide is available in both paper and electronic form. It will be followed by the first of three supplements, ISO/IEC Guide 98-3/Supplement 1 - Propagation of distributions using a Monte Carlo method.
Further, ISO/IEC Guide 98-1 is being prepared to promote the sound evaluation of measurement uncertainty through the use of the GUM and to provide an introduction to the supplements and other related documents, the organizations said.
Measurement is involved in making commercial, health, environmental and scientific decisions. Measurement uncertainty enables users to obtain the probability of making an incorrect decision based on measurement and to manage the consequential risks.
ISO/IEC Guide 98-3 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.
According to the organizations, the principles of this guide are applicable to a 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.
Though primarily concerned with the expression of uncertainty in the measurement of a well-defined physical quantity, the 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, ISO and IEC said.
Source: International Organization for Standardization (ISO).