NF EN ISO 14253-1

Le présent document propose un ensemble de règles qui permettent d'une part de déclarer qu'un produit vérifié à l'aide d'appareils mesureurs est conforme ou non à ses spécifications dimensionnelles, d'autre part d'estimer les risques soit de déclarer conforme un produit mauvais, soit de déclarer non conforme un produit bon.

<p>ISO 14253-1:2013 establishes the rules for determining the conformity or nonconformity with a given tolerance for a characteristic of a workpiece (or a population of workpieces) or limits of maximum permissible errors for a metrological characteristic of a measuring equipment, taking into account the measurement uncertainty.</p> <p>These rules are different for tolerances to individual workpieces and tolerances to workpiece populations.</p> <p>It also gives rules on how to deal with cases where a clear decision (conformity or nonconformity with specification) cannot be taken, i.e. when the measurement result falls within the uncertainty range that exists around the specification limits.</p> <p>ISO 14253-1:2013 applies to specifications defined in general GPS standards (see ISO/TR 14538), i.e. standards prepared by ISO/TC 213, including:</p> <p>? workpiece/population of workpieces specifications (usually given as an upper tolerance limit or a lower tolerance limit or both), and;</p> <p>? measuring equipment specifications (usually given as maximum permissible errors).</p> <p>ISO 14253-1:2013 only applies for characteristics expressed as numerical quantity values.</p>