ISO 23369:2022 PDF

Scope: 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.

ISO 23369:2022 Referenced Document

ISO 11171 Hydraulic fluid power — Calibration of automatic particle counters for liquids
ISO 11943:2021 Hydraulic fluid power — Online automatic particle-counting systems for liquids — Methods of calibration and validation
ISO 12103-1 Road vehicles — Test contaminants for filter evaluation — Part 1: Arizona test dust*， 2024-01-23 Update
ISO 2160 Petroleum products - Corrosiveness to copper - Copper strip test
ISO 2942 Hydraulic fluid power - Filter elements - Verification of fabrication integrity and determination of the first bubble point
ISO 3722 Hydraulic fluid power; Fluid sample containers; Qualifying and controlling cleaning methods
ISO 3968 Hydraulic fluid power - Filters - Evaluation of differential pressure versus flow
ISO 4021 Hydraulic fluid power; particulate contamination analysis; extraction of fluid samples from lines of an operating system
ISO 4405 Hydraulic fluid power — Fluid contamination — Determination of particulate contamination by the gravimetric method

2022 ISO 23369:2022 Hydraulic fluid power — Multi-pass method of evaluating filtration performance of a filter element under cyclic flow conditions
2021 ISO 23369:2021 Hydraulic fluid power - Multi-pass method of evaluating filtration performance of a filter element under cyclic flow conditions