Customer Support: 131 242

  • There are no items in your cart
We noticed you’re not on the correct regional site. Switch to our AMERICAS site for the best experience.
Dismiss alert

ISO/TS 21749:2005

Current
Current

The latest, up-to-date edition.

Measurement uncertainty for metrological applications — Repeated measurements and nested experiments
Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English

Published date

04-03-2005

ISO/TS 21749:2005 follows the approach taken in the Guide to the expression of the uncertainty of measurement (GUM) and establishes the basic structure for stating and combining components of uncertainty. To this basic structure, it adds a statistical framework using the analysis of variance (ANOVA) for estimating individual components, particularly those classified as Type A evaluations of uncertainty, i.e. based on the use of statistical methods. A short description of Type B evaluations of uncertainty (non-statistical) is included for completeness.

ISO/TS 21749:2005 covers experimental situations where the components of uncertainty can be estimated from statistical analysis of repeated measurements, instruments, test items or check standards.

It provides methods for obtaining uncertainties from single-, two- and three-level nested designs only. More complicated experimental situations where, for example, there is interaction between operator effects and instrument effects or a cross effect, are not covered.

ISO/TS 21749:2005 is not applicable to measurements that cannot be replicated, such as destructive measurements or measurements on dynamically varying systems (such as fluid flow, electronic currents or telecommunications systems). It is not particularly directed to the certification of reference materials (particularly chemical substances) and to calibrations where artefacts are compared using a scheme known as a "weighing design". For certification of reference materials, see ISO Guide 35.

When results from interlaboratory studies can be used, techniques are presented in the companion guide ISO/TS 21748. The main difference between ISO/TS 21748 and this Technical Specification is that the ISO/TS 21748 is concerned with reproducibility data (with the inevitable repeatability effects), whereas this Technical Specification concentrates on repeatability data and the use of the analysis of variance for its treatment.

ISO/TS 21749:2005 is applicable to a wide variety of measurements, for example, lengths, angles, voltages, resistances, masses and densities.

DocumentType
Technical Specification
Pages
38
ProductNote
THIS STANDARD HAVE CORRECT VERSION FOR EN-2005
PublisherName
International Organization for Standardization
Status
Current

Standards Relationship
DD ISO/TS 21749:2005 Identical
JIS Z 8404-2:2008 Identical
NEN NPR ISO/TS 21749 : 2005 Identical
UNI ISO/TS 21749 : 2009 Identical

ISO/TS 17503:2015 Statistical methods of uncertainty evaluation — Guidance on evaluation of uncertainty using two-factor crossed designs
PD ISO/TS 17503:2015 Statistical methods of uncertainty evaluation. Guidance on evaluation of uncertainty using two-factor crossed designs
CEI UNI 70099 : 2010 INTERNATIONAL VOCABULARY OF METROLOGY - BASIC AND GENERAL CONCEPTS AND ASSOCIATED TERMS (VIM)
ISO 22514-7:2012 Statistical methods in process management Capability and performance Part 7: Capability of measurement processes
15/30295576 DC : 0 BS ISO 16331-1 - OPTICS AND OPTICAL INSTRUMENTS - LABORATORY PROCEDURES FOR TESTING SURVEYING AND CONSTRUCTION INSTRUMENTS - PART 1: PERFORMANCE OF HANDHELD LASER DISTANCE METERS
OIML V 2-200 : 2012 INTERNATIONAL VOCABULARY OF METROLOGY - BASIC AND GENERAL CONCEPTS AND ASSOCIATED TERMS (VIM)
BS ISO 22514-7:2012 Statistical methods in process management. Capability and performance Capability of measurement processes
08/30193653 DC : 0 BS ISO 17123-1 - OPTICS AND OPTICAL INSTRUMENTS - FIELD PROCEDURES FOR TESTING GEODETIC AND SURVEYING INSTRUMENTS - PART 1: THEORY
UNI ISO/TR 18532 : 2010 Guide to the application of statistical methods for quality and standardization in the industrial sector
DIN ISO 17123-1:2016-02 (Draft) OPTICS AND OPTICAL INSTRUMENTS - FIELD PROCEDURES FOR TESTING GEODETIC AND SURVEYING INSTRUMENTS - PART 1: THEORY (ISO 17123-1:2014)
09/30205176 DC : 0 ISO/TS 25680 - MEDICAL LABORATORIES - CALCULATION AND EXPRESSION OF MEASUREMENT UNCERTAINTY
10/30219236 DC : DRAFT DEC 2010 BS ISO 22514-7 - STATISTICAL METHODS IN PROCESS MANAGEMENT - CAPABILITY AND PERFORMANCE - PART 7: CAPABILITY OF MEASUREMENT PROCESSES
BS ISO 16331-1:2017 Optics and optical instruments. Laboratory procedures for testing surveying and construction instruments Performance of handheld laser distance meters
11/30218530 DC : DRAFT FEB 2011 BS ISO 16331-1 - OPTICS AND OPTICAL INSTRUMENTS - LABORATORY PROCEDURES FOR TESTING SURVEYING AND CONSTRUCTION INSTRUMENTS - PART 1: PERFORMANCE OF HANDHELD LASER DISTANCE METERS
UNE-ISO/IEC GUIA 99:2012 IN International vocabulary of metrology. Basics and general concepts and associated terms (VIM)
ISO/IEC Guide 99:2007 International vocabulary of metrology Basic and general concepts and associated terms (VIM)
UNI ISO 22514-7:2014 STATISTICAL METHODS IN PROCESS MANAGEMENT - CAPABILITY AND PERFORMANCE - PART 7: CAPABILITY OF MEASUREMENT PROCESSES
ISO/TR 18532:2009 Guidance on the application of statistical methods to quality and to industrial standardization
DIN ISO 17123-1 E : 2017 OPTICS AND OPTICAL INSTRUMENTS - FIELD PROCEDURES FOR TESTING GEODETIC AND SURVEYING INSTRUMENTS - PART 1: THEORY (ISO 17123-1:2014)
UNI CEI 70099 : 2008 INTERNATIONAL VOCABULARY OF METROLOGY - BASIC AND GENERAL CONCEPTS AND ASSOCIATED TERMS (VIM)
ISO 16331-1:2017 Optics and optical instruments — Laboratory procedures for testing surveying and construction instruments — Part 1: Performance of handheld laser distance meters
IEEE/ANSI C63.5-2017 REDLINE American National Standard for Electromagnetic Compatibility--Radiated Emission Measurements in Electromagnetic Interference (EMI) Control--Calibration and Qualification of Antennas (9 kHz to 40 GHz)
IEEE/ANSI C63.23-2012 American National Standard Guide for Electromagnetic Compatibility—Computations and Treatment of Measurement Uncertainty

ISO 5725-1:1994 Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions
ISO 5725-3:1994 Accuracy (trueness and precision) of measurement methods and results — Part 3: Intermediate measures of the precision of a standard measurement method
ISO 5725-6:1994 Accuracy (trueness and precision) of measurement methods and results — Part 6: Use in practice of accuracy values
ISO Guide 35:2017 Reference materials Guidance for characterization and assessment of homogeneity and stability
ISO 5725-4:1994 Accuracy (trueness and precision) of measurement methods and results Part 4: Basic methods for the determination of the trueness of a standard measurement method
ISO/TS 21748:2004 Guidance for the use of repeatability, reproducibility and trueness estimates in measurement uncertainty estimation
ISO 5725-2:1994 Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
ISO 3534-3:2013 Statistics — Vocabulary and symbols — Part 3: Design of experiments
ISO 5725-5:1998 Accuracy (trueness and precision) of measurement methods and results — Part 5: Alternative methods for the determination of the precision of a standard measurement method
ISO 3534-1:2006 Statistics — Vocabulary and symbols — Part 1: General statistical terms and terms used in probability

View more information
$326.02
Including GST where applicable

Access your standards online with a subscription

Features

  • Simple online access to standards, technical information and regulations.

  • Critical updates of standards and customisable alerts and notifications.

  • Multi-user online standards collection: secure, flexible and cost effective.

Need help?
Call us on 131 242, then click here to start a Screen Sharing session
so we can help right away! Learn more