NF ISO 11222

NF ISO 11222

October 2002
Standard Current

Air quality - Determination of the uncertainty of the time average of air quality measurements

ISO 11222:2002 provides a method for the quantification of the uncertainty of a time average of a set of air quality data obtained at a specified location over a defined averaging time period. The method is applicable to air quality data obtained by continuous or intermittent monitoring by means of a specified measuring system. The uncertainty of the time average depends on both the uncertainty of the measurement results and the uncertainty due to incomplete time coverage of the data set. ISO 11222:2002 is only applicable if the set of air quality data used to calculate the time average is representative of the temporal structure of the measurand over the defined time period, appropriate information on the uncertainty of the measurement results is available, andthe measurement results have all been obtained at the same location. ISO 11222:2002 implements recommendations of the Guide to the Expression of Uncertainty in Measurement (GUM).

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Main informations

Collections

National standards and national normative documents

Publication date

October 2002

Number of pages

26 p.

Reference

NF ISO 11222

ICS Codes

13.040.01   Air quality in general

Classification index

X43-504

Print number

1 - 07/12/2002

International kinship

ISO 11222:2002
Sumary
Air quality - Determination of the uncertainty of the time average of air quality measurements

ISO 11222:2002 provides a method for the quantification of the uncertainty of a time average of a set of air quality data obtained at a specified location over a defined averaging time period. The method is applicable to air quality data obtained by continuous or intermittent monitoring by means of a specified measuring system. The uncertainty of the time average depends on both the uncertainty of the measurement results and the uncertainty due to incomplete time coverage of the data set.

ISO 11222:2002 is only applicable if

  • the set of air quality data used to calculate the time average is representative of the temporal structure of the measurand over the defined time period,
  • appropriate information on the uncertainty of the measurement results is available, and
  • the measurement results have all been obtained at the same location.

ISO 11222:2002 implements recommendations of the Guide to the Expression of Uncertainty in Measurement (GUM).

Table of contents
  • Avant-propos
    iv
  • Introduction
    v
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Termes et définitions
    1
  • 4 Symboles et abréviations
    4
  • 5 Exigences relatives aux données d'entrée
    5
  • 5.1 Généralités
    5
  • 5.2 Exigences spécifiques relatives aux données d'entrée
    6
  • 6 Procédure
    8
  • 6.1 Généralités
    8
  • 6.2 Incertitude-type due au système de mesure
    8
  • 6.3 Incertitude-type due à une couverture temporelle incomplète
    10
  • 6.4 Incertitude-type composée
    11
  • 6.5 Incertitude élargie
    11
  • 7 Rapport sur l'incertitude
    12
  • Annexe A (informative) Exemple - Quantification de l'incertitude d'une concentration moyenne mensuelle en dioxyde d'azote présente dans l'air ambiant
    13
  • Bibliographie
    20
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