本文件描述了以下内容: -？对液压流体动力过滤器元件进行连续注入污染物的多道过滤性能测试； 注1:用于验证试验方法的背景实验室间研究，见附录D。 -？确定污染物容量、颗粒去除和压差特性的程序； -？目前适用于平均过滤比大于或等于75（颗粒尺寸）的液压流体动力过滤器元件的试验≥？25μm（c），且最终储层重量分析水平低于200μm/L； 注2:有必要通过验证确定可用于试验设施的流速范围和较低粒径限制。 -？根据附录a，使用ISO介质试验粉尘（ISO MTD）污染物和试验流体进行试验。 本文件旨在提供一种试验程序，该程序产生可重复的试验数据，用于在不受静电影响的情况下评估液压流体动力滤芯的过滤性能。 本文件适用于三种试验条件: -？试验条件？1，基准上游重量分析水平为3？mg/L； -？试验条件？2，基准上游重量分析水平为10？mg/L； -？试验条件？3，基准上游重量分析水平为15？mg/L。

This document describes the following: —    a multi-pass filtration performance test with continuous contaminant injection for hydraulic fluid power filter elements; NOTE 1   For the background interlaboratory study used to verify the test methodology, see Annex D. —    a procedure for determining the contaminant capacity, particulate removal and differential pressure characteristics; —    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 reservoir gravimetric level of less than 200 mg/L; NOTE 2   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. —    a test using ISO medium test dust (ISO MTD) contaminant and a test fluid in accordance with Annex A. This document is intended to provide 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 applies to three test conditions: —    test condition 1, with a base upstream gravimetric level of 3 mg/L; —    test condition 2, with a base upstream gravimetric level of 10 mg/L; —    test condition 3, with a base upstream gravimetric level of 15 mg/L.