1、 IEC TR 62461 Edition 2.0 2015-01 TECHNICA L REPOR T Radiation protection instrumentation Determination of uncertainty in measurement IEC TR 62461:2015-01(en)colourinsideCopyright International Electrotechnical Commission THIS PUBLICA TION IS COPYRIGHT PROTECTED Copyright 2015 IEC,Geneva,Switzerland
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11、n protection instrumentation Determination of uncertainty in measurement INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 13.280 ISBN 978-2-8322-2216-4 R egist er ed tr ademar k of t he Int er national Electr ot echnical Commission Warning!Make sure that you obtained this publication from an authorized
12、 distributor.colourinsideCopyright International Electrotechnical Commission 2 IEC TR 62461:2015 IEC 2015 CONTENTS FOREWORD.5 INTRODUCTION.7 1 Scope.8 2 Normative references.8 3 Terms and definitions.9 4 List of symbols.12 5 The GUM and the GUM S1 concept.14 5.1 General concept of uncertainty determ
13、ination.14 5.1.1 Overview in four steps.14 5.1.2 Summary of the analytical method for steps 3 and 4.15 5.1.3 Summary of the Monte Carlo method for steps 3 and 4.15 5.1.4 Which method to use:Analytical or Monte Carlo?.16 5.2 Example of a model function.16 5.3 Collection of data and existing knowledge
14、 for the example.18 5.3.1 General.18 5.3.2 Calibration factor for the example.19 5.3.3 Zero reading for the example.20 5.3.4 Reading for the example.21 5.3.5 Relative response or correction factor for the example.21 5.3.6 Comparison of probability density distributions for input quantities.23 5.4 Ca
15、lculation of the result of a measurement and its standard uncertainty(uncertainty budget).25 5.4.1 General.25 5.4.2 Analytical method.25 5.4.3 Monte Carlo method.26 5.4.4 Uncertainty budgets.26 5.5 Statement of the measurement result and its expanded uncertainty.27 5.5.1 General.27 5.5.2 Analytical
16、method.28 5.5.3 Monte Carlo method.28 5.5.4 Representation of the output distribution function in a simple form(Monte Carlo method).31 6 Results below the decision threshold of the measuring device.31 7 Overview of the annexes.32 Annex A(informative)Example of an uncertainty analysis for a measurement with an electronic ambient dose equivalent rate meter according to IEC 60846-1:2009.33 A.1 General.33 A.2 Model function.33 A.3 Calculation of the complete result of the measurement(measured value,