標準號：SAE AS 598-2012
中文標準名稱：用于液壓驅動系統中微粒污染物的宇航測微法和顯微鏡計數
英文標準名稱：Aerospace Microscopic Sizing and Counting of Particulate Contamination for Fluid Power Systems
標準類型：V29
發布日期：2012/1/23 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：V29
國際標準分類號：49.080
引用標準：SAE ARP 4285-2001;SAE ARP 5376-1998;SAE AS 1241;SAE AS 4059
適用范圍：The purpose of this technique is to provide a means of determining the severity of particulate contamination in fluid power systems. AS598 was prepared by SAE A6C1 panel and supersedes ARP598C. AS598 retained the technical content of ARP598C with more prescriptive requirements for the material used to carry out the analysis. The widely used technique has since been replaced in many instances with automatic particle counters (APC) but remains a proven, accurate and reliable technique. This SAE Aerospace Standard (AS) defines the materials, apparatus and procedure for sizing and counting of particulate contamination, 5 um or greater, in hydraulic fluid samples by membrane filtration with microscopic counting. The microscopic counting method is capable of counting particulate matter in samples withdrawn from fluid power systems as identified by the 12 classes of AS4059 and projected beyond these for the five standard ranges specified and can thus serve as the primary document to determine acceptability. It is also capable of revealing but not measuring evidence of abnormal amount of water, other fluids, fine particulate and other materials, especially fibers and metals. It is applicable to all military, civil, space vehicles and test equipment.