NF ISO 8573-4

NF ISO 8573-4

July 2019
Standard Current

Compressed air - Contaminant measurement - Part 4 : particle content

This document provides a method for sampling compressed air and a guide for choosing suitable measuring equipment to determine its particle size and concentration by number (to be referenced as "concentration" throughout this document). It also describes the limitations of the various measurement methods and describes the evaluation and uncertainty considerations. This document will report the particle size and concentration of all types of particle combined and does not aim to be able to segregate the separate solid and liquid particle fractions. When it is required that the concentration of a specific fraction is to be determined then recourse to the relevant standard method from the ISO 8573 series is recommended. NOTE 1 The test methods described in this document are those suitable for determining the purity classes given in ISO 8573‑1. NOTE 2 Particle content determined as concentration by mass is dealt with in ISO 8573‑8. NOTE 3 This document does not address instances where non-isothermal conditions exist, and separate arrangements should be made where particles may be formed by vapour condensation or lost through evaporation.

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Main informations

Collections

National standards and national normative documents

Publication date

July 2019

Number of pages

32 p.

Reference

NF ISO 8573-4

ICS Codes

23.140   Compressors and pneumatic machines
71.100.20   Gases for industrial application

Classification index

E51-301-4

Print number

1

International kinship

ISO 8573-4:2019
Sumary
Compressed air - Contaminant measurement - Part 4 : particle content

This document provides a method for sampling compressed air and a guide for choosing suitable measuring equipment to determine its particle size and concentration by number (to be referenced as "concentration" throughout this document). It also describes the limitations of the various measurement methods and describes the evaluation and uncertainty considerations.

This document will report the particle size and concentration of all types of particle combined and does not aim to be able to segregate the separate solid and liquid particle fractions. When it is required that the concentration of a specific fraction is to be determined then recourse to the relevant standard method from the ISO 8573 series is recommended.

NOTE 1 The test methods described in this document are those suitable for determining the purity classes given in ISO 8573‑1.

NOTE 2 Particle content determined as concentration by mass is dealt with in ISO 8573‑8.

NOTE 3 This document does not address instances where non-isothermal conditions exist, and separate arrangements should be made where particles may be formed by vapour condensation or lost through evaporation.

Replaced standards (1)
NF ISO 8573-4
February 2002
Standard Cancelled
Compressed air - Part 4 : test methods for solid particle content

Le présent document s'adresse aux secteurs industriels concernés par la production et la distribution d'air comprimé (compresseurs, matériels de traitement et d'utilisa tion de l'air comprimé) notamment aux applications où la qualité de l'air est un élé ment prépondérant de fiabilité des matériels utilisés (par exemple les transmissions pneumatiques) . Il présente des méthodes d'essai permettant de mesurer la teneur en particules soli des contenues dans l'air fourni par les compresseurs et circuits d'air comprimé.

Table of contents
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  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions
  • 4 Unités
  • 5 Conditions de référence
  • 6 Type de particule
  • 7 Sélection de la méthode
  • 8 Techniques de prélèvement
  • 9 Évaluation des résultats d'essai
  • 10 Rapport d'essai
  • Annexe A Exemple de rapport d'essai sur la détermination de la teneur en particules dans l'air comprimé
  • Annexe B Description des méthodes de mesure et du dimensionnement des particules
  • Annexe C Échantillonnage à plein débit
  • Annexe D Prélèvement isocinétique
  • Annexe E Diffuseur d'air comprimé
  • Annexe F Dilution de la concentration de particules
  • Bibliographie
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