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ISO 23369:2021

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

General information
Valid from 16.06.2021
Directives or regulations
None
Standard history
Status
Date
Type
Name
16.06.2021
Main
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 ISO12103-1 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: 1)    Base upstream gravimetric level of 3 mg/L. 2)    Base upstream gravimetric level of 10 mg/L. 3)    Base upstream gravimetric level of 15 mg/L.
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