Draft International Standard
ISO/DIS 4407
Hydraulic fluid power — Fluid contamination — Determination of particulate contamination by the counting method using an optical microscope
Reference number
ISO/DIS 4407
Edición 3
Draft
International Standard
Vista previa
ISO/DIS 4407
86030
No disponible en español
Este borrador de Norma Internacional se encuentra en la fase de consultas con los miembros de ISO.
Reemplazará ISO 4407:2002

ISO/DIS 4407

ISO/DIS 4407
86030
Idioma
Formato
CHF 63
Convertir Franco suizo (CHF) a tu moneda

Resumen

This International Standard specifies methods for determining the level of particulate contamination in liquids used in hydraulic systems by counting the number of particles deposited on the surface of a membrane filter using an optical microscope. It includes particle counting by two manual methods and image analysis, using either transmitted or incident lighting systems.

Particle sizes greater than or equal to 2 micrometres can be sized and counted by this method, but the resolution and accuracy of the results will depend upon the optical system used and the capabilities of the operator.

All hydraulic fluids with a wide range of contamination levels can be analysed according to this International Standard. However, the counting uncertainty at the larger particle sizes increases if the volume filtered is reduced to allow smaller sized particles to be counted, where a fine precipitate or a high particle concentration is present.

Informaciones generales

  •  : En desarrollo

    Puede contribuir al desarrollo del borrador de esta norma internacional. Para ello, contacte con su miembro nacional

    : Voto sobre el DIS iniciado: 12 semanas [40.20]
  •  : 3
     : 25
  • ISO/TC 131/SC 6
    23.100.60 
  • RSS actualizaciones

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)