UNI ISO/TS 21749 : 2009
Current
The latest, up-to-date edition.
MEASUREMENT UNCERTAINTY FOR METROLOGICAL APPLICATIONS - REPEATED MEASUREMENTS AND NESTED EXPERIMENTS
03-26-2009
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Statistical methods of uncertainty evaluation
4.1 Approach of the Guide to the expression
of uncertainty of measurement
4.2 Check standards
4.3 Steps in uncertainty evaluation
4.4 Examples in this Technical Specification
5 Type A evaluation of uncertainty
5.1 General
5.2 Role of time in Type A evaluation of uncertainty
5.3 Measurement configuration
5.4 Material inhomogeneity
5.5 Bias due to measurement configurations
6 Type B evaluation of uncertainty
7 Propagation of uncertainty
7.1 General
7.2 Formulae for functions of a single variable
7.3 Formulae for functions of two variables
8 Example - Type A evaluation of uncertainty from
a gauge study
8.1 Purpose and background
8.2 Data collection and check standards
8.3 Analysis of repeatability, day-to-day and
long-term effects
8.4 Probe bias
8.5 Wiring bias
8.6 Uncertainty calculation
Annex A (normative) - Symbols
Bibliography
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