Hivatkozási szám

MSZ EN ISO 14253-2:2012

Dokumentumazonosító

153113

Cím

Termékek geometriai követelményei (GPS). Munkadarabok és mérőeszközök méréses ellenőrzése. 2. rész: Útmutató a GPS-mérések, mérőeszköz-kalibrálások és termékellenőrzések bizonytalanságának becsléséhez (ISO 14253-2:2011)

Angol cím

Geometrical product specifications (GPS). Inspection by measurement of workpieces and measuring equipment. Part 2: Guidance for the estimation of uncertainty in GPS measurement, in calibration of measuring equipment and in product verification (ISO 14253-2:2011)

Alkalmazási terület

This part of ISO 14253 gives guidance on the implementation of the concept of the “Guide to the estimation of uncertainty in measurement” (in short GUM) to be applied in industry for the calibration of (measurement) standards and measuring equipment in the field of GPS and the measurement of workpiece GPS characteristics. The aim is to promote full information on how to achieve uncertainty statements and provide the basis for international comparison of measurement results and their uncertainties (relationship between purchaser and supplier). This part of ISO 14253 is intended to support ISO 14253-1. Both parts are beneficial to all technical functions in a company in the interpretation of GPS specifications [i.e. tolerances of workpiece characteristics and values of maximum permissible errors (MPEs) for metrological characteristics of measuring equipment]. This part of ISO 14253 introduces the Procedure for Uncertainty MAnagement (PUMA), which is a practical, iterative procedure based on the GUM for estimating uncertainty of measurement without changing the basic concepts of the GUM. It is intended to be used generally for estimating uncertainty of measurement and giving statements of uncertainty for: - single measurement results; - the comparison of two or more measurement results; - the comparison of measurement results — from one or more workpieces or pieces of measurement equipment — with given specifications [i.e. maximum permissible errors (MPEs) for a metrological characteristic of a measurement instrument or measurement standard, and tolerance limits for a workpiece characteristic, etc.], for proving conformance or non-conformance with the specification. The iterative method is based basically on an upper bound strategy, i.e. overestimation of the uncertainty at all levels, but the iterations control the amount of overestimation. Intentional overestimation — and not underestimation — is necessary to prevent wrong decisions based on measurement results. The amount of overestimation is controlled by economical evaluation of the situation. The iterative method is a tool to maximize profit and minimize cost in the metrological activities of a company. The iterative method/procedure is economically self-adjusting and is also a tool to change/reduce existing uncertainty in measurement with the aim of reducing cost in metrology (manufacture). The iterative method makes it possible to compromise between risk, effort and cost in uncertainty estimation and budgeting.

ICS

17.040.40 Termékek geometriai követelményei (GPS)

Műszaki Bizottság

A szabvány nyelve

angol

Az érvényesség kezdete

2012-03-01

Forrás

idt EN ISO 14253-2:2011; idt EN ISO 14253-2:2011/AC:2013; idt ISO 14253-2:2011

Előd

MSZ ENV ISO 14253-2:2001

Utód

Módosítás

SZK-közlemények

2013/09: Helyesbítés

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