ISO 2942:2018

Hydraulic fluid power — Filter elements — Verification of fabrication integrity and determination of the first bubble point

Standard Details

This document specifies a bubble-point test method applicable to filter elements used in hydraulic fluid power systems. It can be used both to verify the fabrication integrity of a filter element (by checking the absence of bubbles) and to permit the localization of the largest pore of the filter element by determining the first bubble point.

NOTE Verification of fabrication integrity is used to define the acceptability of the filter elements for further use or testing.

The first bubble point is established through continuation of the fabrication integrity test. It is under no circumstances a functional characteristic of a filter element; in particular, it cannot be used to estimate filtration rating, efficiency or retention capacity and is intended to be used for information only.

This document specifies a method to normalise fabrication integrity and bubble point data to a standard value of surface tension when test fluids other than 2-propanol are used.

General Information

Status : Published

Standard Type: Main

Document No: ISO 2942:2018

Document Year: 2018

Pages: 11

Edition: 5

Section Volume:
ISO/TC 131/SC 6. Contamination control

ICS:
23.100.60 Filters, seals and contamination of fluids

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