ISO 23369:2022

Hydraulic fluid power — Multi-pass method of evaluating filtration performance of a filter element under cyclic flow conditions

This document specifies:

a)??? A multi-pass filtration performance test under cyclic flow conditions with continuous contaminant injection for hydraulic fluid power filter elements.

b)??? A procedure for determining the contaminant capacity, particulate removal and differential pressure characteristics.

c)??? A test currently applicable to hydraulic fluid power filter elements that exhibit an average filtration ratio greater than or equal to 75 for particle sizes =25?μm(c), and a final test system reservoir gravimetric level of less than 200?mg/L. It is necessary to determine by validation the range of flow rates and the lower particle size limit that can be used in test facilities.

d)??? A test using ISO?12103–1 A3 medium test dust contaminant and a test fluid.

This document provides a test procedure that yields reproducible test data for appraising the filtration performance of a hydraulic fluid power filter element without influence of electrostatic charge.

This document is applicable to three test conditions:

—??? Base upstream gravimetric level of 3?mg/L;

—??? Base upstream gravimetric level of 10?mg/L;

—??? Base upstream gravimetric level of 15?mg/L.

Edition	2022
Published Date	2022
Published By	International Standardization Organisation
Page Count	35