NF ISO 16232-7

NF ISO 16232-7

February 2011
Standard Cancelled

Road vehicles - Cleanliness of components of fluid circuits - Part 7 : particle sizing and counting by microscopic analysis

ISO 16232-7:2007 defines methods for determining the size and number of contaminant particles, which have been extracted from components and deposited on the surface of a membrane filter, as determined by using either a light optical microscope (LM) or a scanning electron microscope (SEM). The result of this measurement is the particle size distribution on the membrane filter. As the function of parts and components can be impaired by the presence of a single or a few critical particles, a complete analysis of the total membrane filter surface is essential. These analyses can be performed either manually or fully automatically using Image Analysis (IA) techniques if the appropriate equipment is available.

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Main informations

Collections

National standards and national normative documents

Publication date

February 2011

Number of pages

28 p.

Reference

NF ISO 16232-7

ICS Codes

13.040.50   Transport exhaust emissions
43.180   Diagnostic, maintenance and test equipment

Classification index

R19-501-7

Print number

1 - 24/01/2011

International kinship

ISO 16232-7:2007
Sumary
Road vehicles - Cleanliness of components of fluid circuits - Part 7 : particle sizing and counting by microscopic analysis

ISO 16232-7:2007 defines methods for determining the size and number of contaminant particles, which have been extracted from components and deposited on the surface of a membrane filter, as determined by using either a light optical microscope (LM) or a scanning electron microscope (SEM). The result of this measurement is the particle size distribution on the membrane filter.

As the function of parts and components can be impaired by the presence of a single or a few critical particles, a complete analysis of the total membrane filter surface is essential.

These analyses can be performed either manually or fully automatically using Image Analysis (IA) techniques if the appropriate equipment is available.

Table of contents
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  • Avant-propos
    iv
  • Introduction
    v
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Termes et définitions
    2
  • 4 Principe
    2
  • 5 Équipements
    2
  • 5.1 Équipement pour la préparation des filtres à membrane
    2
  • 5.2 Équipement d'analyse
    3
  • 5.3 Analyse d'images
    7
  • 5.4 Porte-objet motorisé
    8
  • 5.5 Analyse d'images multiples
    8
  • 5.6 Conditions environnementales
    9
  • 5.7 Santé et sécurité
    9
  • 6 Étalonnage
    9
  • 7 Mode opératoire
    10
  • 7.1 Nettoyage et préparation de l'appareillage
    10
  • 7.2 Préparation du filtre à membrane
    10
  • 7.3 Mode opératoire de détermination de la granulométrie et du comptage des particules
    11
  • 8 Résultats
    13
  • 8.1 Rapport d'essai
    13
  • 8.2 Expression des résultats
    13
  • Annexe A (informative) Filtration
    14
  • Annexe B (informative) Balayage de champ
    15
  • Annexe C (informative) Comptage des particules sur la marge
    16
  • Annexe D (informative) Analyse d'images multiples
    18
  • Annexe E (informative) Résolution et étalonnage d'un système d'analyse d'images
    19
  • Annexe F (informative) Exemple de rapport d'essai
    20
  • Bibliographie
    22
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