• There are no items in your cart
We noticed you’re not on the correct regional site. Switch to our AMERICAS site for the best experience.
Dismiss alert

BS EN ISO 14956:2002

Current
Current

The latest, up-to-date edition.

Air quality. Evaluation of the suitability of a measurement procedure by comparison with a required measurement uncertainty
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

17-10-2002

Foreword
Introduction
1 Scope
2 Normative reference
3 Terms and definitions
4 Symbols and abbreviated terms
5 Principle
6 Requirements
   6.1 Methods and materials
   6.2 Performance characteristics
   6.3 Required measurement quality
7 Required performance related to dynamic conditions
   7.1 General
   7.2 Response time
8 Required performance related to stationary conditions
   8.1 Analytical function, model function and variance
       function
   8.2 Identification of sources of uncertainty
   8.3 Assignment of sources of uncertainty to performance
       characteristics
   8.4 Definition and quantification of conditions of operation
       of the measurement system
   8.5 Quantification of the impact of selected performance
       characteristics as partial standard uncertainties
   8.6 Estimation of the combined standard uncertainty
   8.7 Estimation of the expanded uncertainty
   8.8 Evaluation of compliance with the required measurement
       quality
9 Field verification
10 Report
Annex A (informative) Default ranges of chemical interferents
Annex B (normative) Coverage factors derived from effective
        degrees of freedom
Annex C (informative) Example of an assessment of compliance
        of UV fluorescence method for SO[2] with requirements
        on ambient air quality
Annex D (informative) Examples of field verification programmes
Bibliography

States, 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 of 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.

Committee
EH/2/4
DevelopmentNote
Supersedes 98/564097 DC. (09/2002) Reviewed and confirmed by BSI, June 2007. (05/2007)
DocumentType
Standard
Pages
38
PublisherName
British Standards Institution
Status
Current
Supersedes

ISO 7935:1992 Stationary source emissions — Determination of the mass concentration of sulfur dioxide — Performance characteristics of automated measuring methods
ISO 6879:1995 Air quality — Performance characteristics and related concepts for air quality measuring methods
ISO 11222:2002 Air quality Determination of the uncertainty of the time average of air quality measurements
ISO 9169:2006 Air quality Definition and determination of performance characteristics of an automatic measuring system

View more information
£232.00
Excluding VAT

Access your standards online with a subscription

Features

  • Simple online access to standards, technical information and regulations.

  • Critical updates of standards and customisable alerts and notifications.

  • Multi-user online standards collection: secure, flexible and cost effective.