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EN ISO 6789-2:2017

Current

Current

The latest, up-to-date edition.

Assembly tools for screws and nuts - Hand torque tools - Part 2: Requirements for calibration and determination of measurement uncertainty (ISO 6789-2:2017)

Published date

08-03-2017

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European foreword
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Requirements for calibration
5 Measurement error
6 Sources of uncertainty
7 Determination of the calibration result
8 Calibration certificate
Annex A (informative) - Calculation example for
        an indicating torque tool (Type I)
Annex B (informative) - Calculation example for
        a setting torque tool (Type II)
Annex C (normative) - Minimum requirements
        for the calibration of the torque measurement
        device and the estimation of its measurement
        uncertainty
Bibliography

ISO 6789-2:2017 specifies the method for the calibration of hand torque tools and describes the method of calculation of measurement uncertainties for the calibration.ISO 6789-2:2017 specifies the minimum requirements for the calibration of the torque measurement device where the relative measurement uncertainty interval, W´md, is not already provided by a traceable calibration certificate.ISO 6789 is applicable for the step by step (static) and continuous (quasi-static) calibration of torque measurement devices, the torque of which is defined by measuring of the elastic form change of a deformable body or a measured variable which is in proportion to the torque.ISO 6789-2:2017 applies to hand torque tools which are classified as indicating torque tools (Type I) and setting torque tools (Type II).NOTE Hand torque tools covered by this document are the ones identified in ISO 1703:2005 by reference numbers 6 1 00 11 0, 6 1 00 11 1 and 6 1 00 12 0, 6 1 00 12 1 and 6 1 00 14 0, 6 1 00 15 0. ISO 1703 is currently under revision. In the next edition, torque tools will be moved to an own clause, and with this change the reference numbers will also change and additional reference numbers will be added.

Committee
CEN/BT
DevelopmentNote
Supersedes EN ISO 6789. (03/2017)
DocumentType
Standard
PublisherName
Comite Europeen de Normalisation
Status
Current
Supersedes

ECA 4-01 : LATEST REQUIREMENTS CONCERNING CERTIFICATES ISSUED BY ACCREDITED CALIBRATION LABORATORIES
DIN 51309:2005-12 Materials testing machines - Calibration of static torque measuring devices
ISO/IEC 17025:2005 General requirements for the competence of testing and calibration laboratories
ECA 10-14 : 2011 GUIDELINES ON THE CALIBRATION OF STATIC TORQUE MEASURING DEVICES
ISO/TS 16949:2009 Quality management systems Particular requirements for the application of ISO 9001:2008 for automotive production and relevant service part organizations
ECA 4-02 : 2013 EVALUATION OF THE UNCERTAINTY OF MEASUREMENT IN CALIBRATION
ISO 6789-1:2017 Assembly tools for screws and nuts — Hand torque tools — Part 1: Requirements and methods for design conformance testing and quality conformance testing: minimum requirements for declaration of conformance
VDI/VDE 2646:2006-02 Torque measuring devices/measuring chains - Minimum requirements in calibrations
ISO/IEC Guide 99:2007 International vocabulary of metrology Basic and general concepts and associated terms (VIM)
ISO 1703:2005 Assembly tools for screws and nuts Designation and nomenclature
ISO 9001:2015 Quality management systems — Requirements
BS 7882:2008 Method for calibration and classification of torque measuring devices
ISO/IEC Guide 98-3:2008 Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)

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