NF EN ISO 14956

NF EN ISO 14956

December 2002
Standard Current mandatory application standard
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Air quality - Evaluation of the suitability of a measurement procedure by comparison with a required measurement uncertainty

This International Standard specifies, for the field of air quality measurement procedures, the: estimation of measurement uncertainty from actual or claimed values of all important performance characteristics of a method under stationary conditions; assessment of whether or not specified values for these performance characteristics comply with the required quality of a measured value at a stated measurand value; evaluation of the applicability of the measurement method based on laboratory performance and confirmatory field test; establishment of requirements on dynamic behaviour of instruments. This International Standard is applicable to measurement procedures whose output is a defined time average.

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Main informations

Collections

National standards and national normative documents

Publication date

December 2002

Number of pages

34 p.

Reference

NF EN ISO 14956

ICS Codes

13.040.01   Air quality in general

Classification index

X43-508

Print number

1 - 12/12/2002

International kinship

ISO 14956:2002

European kinship

EN ISO 14956:2002
Sumary
Air quality - Evaluation of the suitability of a measurement procedure by comparison with a required measurement uncertainty

This International Standard specifies, for the field of air quality measurement procedures, the:

estimation of measurement uncertainty from actual or claimed values of all important performance characteristics of a method under stationary conditions; assessment of whether or not specified values for these performance characteristics comply with the required quality of a measured value at a stated measurand value; evaluation of the applicability of the measurement method based on laboratory performance and confirmatory field test; establishment of requirements on dynamic behaviour of instruments.

This International Standard is applicable to measurement procedures whose output is a defined time average.

Table of contents
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  • Avant-propos
    iv
  • Introduction
    v
  • 1 Domaine d'application
    1
  • 2 Référence normative
    1
  • 3 Termes et définitions
    1
  • 4 Symboles et abréviations
    2
  • 5 Principe
    4
  • 6 Exigences
    7
  • 6.1 Méthodes et matériaux
    7
  • 6.2 Caractéristiques métrologiques
    7
  • 6.3 Qualité de mesure requise
    7
  • 7 Performance requise liée aux conditions dynamiques
    7
  • 7.1 Généralités
    7
  • 7.2 Temps de réponse
    7
  • 8 Performance requise liée aux conditions stables
    7
  • 8.1 Fonction analytique, fonction modèle et fonction variance
    7
  • 8.2 Identification des sources d'incertitude
    8
  • 8.3 Attribution des sources d'incertitude aux caractéristiques métrologiques
    9
  • 8.4 Définition et quantification des conditions de fonctionnement du système de mesure
    9
  • 8.5 Quantification de l'impact des caractéristiques métrologiques sélectionnées sous forme d'incertitudes types partielles
    10
  • 8.6 Estimation de l'incertitude type composée
    13
  • 8.7 Estimation de l'incertitude élargie
    13
  • 8.8 Évaluation de la conformité avec la qualité de mesure requise
    14
  • 9 Vérification sur le terrain
    14
  • 10 Rapport
    15
  • Annexe A (informative) Plages par défaut des interférents chimiques
    16
  • Annexe B (normative) Facteurs d'élargissement déduits à partir du nombre effectif de degrés de liberté
    18
  • Annexe C (informative) Exemple d'évaluation de la conformité de la méthode par fluorescence UV appliquée à S02 avec les exigences requises de la qualité de l'air ambiant
    19
  • Annexe D (informative) Exemples de programmes de vérification sur le terrain
    24
  • Bibliographie
    26
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