Standard: ISO - FDIS 6789-2

ASSEMBLY TOOLS FOR SCREWS AND NUTS - HAND TORQUE TOOLS - PART 2: REQUIREMENTS FOR CALIBRATION AND DETERMINATION OF MEASUREMENT UNCERTAINLY

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Scope:

This document specifies the method for the calibration of hand torque tools and describes the method of calculation of measurement uncertainties for the calibration.

This document 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.

This document 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 under 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 1703:2005 is currently under revision. In the next edition, torque tools will be moved to an own clause (ISO 1703:—, Clause 10). With this change, the reference numbers will change and additional reference numbers will be added.

Organization: International Organization for Standardization
Document Number: fdis 6789-2
Publish Date: 2016-10-17
Page Count: 48
Change Type: DRFT
Available Languages: EN
DOD Adopted: NO
ANSI Approved: NO
Most Recent Revision: YES
Current Version: YES
Status: Pending

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