The Quality of Measurements

This detailed discussion of the fundamentals of metrology includes the design of the SI 'International System' of units, the theory of measurement error, and methods for estimating measurement uncertainty, all discussed from the most up-to-date perspective.

This monograph and translation from the Russian describes in detail and comments on the fundamentals of metrology. The basic concepts of metrology, the principles of the International System of Units SI, the theory of measurement uncertainty, the new methodology of estimation of measurement accuracy on the basis of the uncertainty concept, as well as the methods for processing measurement results and estimating their uncertainty are discussed from the modern position. It is shown that the uncertainty concept is compatible with the classical theory of accuracy. The theory of random uncertainties is supplemented with their most general description on the basis of generalized normal distribution; the instrumental systematic errors are presented in connection with the methodology of normalization of the metrological characteristics of measuring instruments.

The information about modern systems of traceability is given. All discussed theoretical principles and calculation methods are illustrated with examples.

The monograph provides an introduction to the modern fundamentals of metrology The presented methodology of measurement accuracy assurance that is based on the ISO 5725 standards helps readers validate new measurement methods Presented methods on the basis of the author theory of metrological reliability of measuring instruments help readers determine the calibration and verification intervals Includes supplementary material: sn.pub/extras

Klappentext

This book provides a detailed discussion and commentary on the fundamentals of metrology. The fundamentals of metrology, the principles underlying the design of the SI International System of units, the theory of measurement error, a new methodology for estimation of measurement accuracy based on uncertainty, and methods for reduction of measured results and estimation of measurement uncertainty are all discussed from a modern point of view. The concept of uncertainty is shown to be consistent with the classical theory of accuracy. The theory of random measurement errors is supplemented by a very general description based on the generalized normal distribution; systematic instrumental error is described in terms of a methodology for normalizing the metrological characteristics of measuring instruments.

A new international system for assuring uniformity of measurements based on agreements between national metrological institutes is discussed, in addition to the role and procedure for performance of key comparisons between national standards. The conclusion describes a new methodology for assurance of measurement accuracy (based on the provisions contained in the ISO 5725-series standards) that is now becoming more and more common around the world. All of the theoretical statements and calculation methods are illustrated using examples.

This book will be of interest to personnel working in government metrological services (or in the metrological services of legal entities), and to specialists who use measuring instruments or make use of measured data in their daily activities It will be useful to students at technical universities when studying the academic disciplines of Metrology, Standardization, and Certification; Metrology and Measurement Assurance; and Metrology and Measuring Instruments.

Inhalt
Preface.- From the Author.- 1. Basic Concepts of Metrology.- 2. Measurement Errors.- 3. Measurement Uncertainty.- 4. Methods for Estimation of Measurement Results and Their Uncertainties.- 5. International System of Units SI.- 6. Measurement Assurance.- 7. Verification and Calibration Intervals.- 8. Assurance of Measurement Accuracy in Correspondence with the ISO 5725 Standards.- References.- Index.