SAE ARP 4285-2001 宇航液压系统液体中微粒污染物的膜评估程序

标准号：SAE ARP 4285-2001
中文标准名称：宇航液压系统液体中微粒污染物的膜评估程序
英文标准名称：Aerospace - Evaluation of Particulate Contamination in Hydraulic Fluid - Membrane Procedure
标准类型：V38
发布日期：2001/3/1 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：V38
国际标准分类号：49.080
引用标准：SAE ARP 598;SAE ARP 5376;SAE AS 4059;SAE AS 1241;SAE AS 8775;MIL-F-8815;MIL-H-5606;MIL-PRF-680;MIL-PRF-6083;MIL-PRF-83282;MIL-PRF-87257;FED-STD-209;ISO 11500
适用范围：This SAE Aerospace Recommended Practice (ARP) establishes a method for evaluating the particulate matter extracted from the working fluid of a hydraulic system or component using a membrane. The amount of particulate matter deposited on the membrane due to filtering a given quantity of fluid is visually compared against a standard membrane in order to provide an indication of the cleanliness level of the fluid. A particular feature of this method is the membrane preparation to achieve an even particulate distribution on the membrane suitable for other applications. Membrane evaluation using standard membranes, described in this document, is an alternative technique to counting with either an optical microscope (ARP598) or an automatic particule counter (ISO 11500). The latter particle counting procedures are considered more precise. This procedure shall not be used as an alternative to particle counting unless agreed to by the customer since the results by this procedure may differ from those by particle counting, even though the standard membrane correlates to a specific particle count.