01-油液清洁度等级

1.2油液污染分析1.2.2油液污染度测定油液污染度的表示方法1油液污染度的测定2ISO4406：1999（GB/T14039-2002）1NAS16382SAE749D3自动颗粒计数器计数法1显微镜计数法2显微镜比较法3滤网堵塞法4称重法5ISO4406污染度分级代码每毫升的颗粒数代码大于小于等于2500000>28130000025000002864000013000002732000064000026160000320000258000016000024400008000023200004000022100002000021500010000202500500019130025001864013001732064016160320158016014408013204012102011510102.5591.32.580.641.370.320.6460.160.3250.080.1640.040.0830.020.0420.010.0210.000.010颗粒尺寸每毫升油液中大于此尺寸的颗粒数代码4μm(c)20000~40000226μm(c)1300~25001814μm(c)40~801322/18/13*/18/13大于等于4μm(c)的颗粒太多而无法计数。-/18/13大于等于4μm(c)的颗粒不需要计数。1.2油液污染分析NAS1638污染度分级标准（100ml液压油液中颗粒数）污染等级颗粒尺寸范围（μm）5~1515~2525~5050~100>10000125224100250448201500891631210001783261320003566311244000712126224580001425253458616000285050690167320005700101218032864000114002025360649128000228004050720128102560004560081001440256115120009120016200288051212102400018240032400576010241.2油液污染分析SAE749D污染分级标准（100ml液压油液中颗粒数）尺寸范围（μm）污染等级01234567~102.5~5待定5~10270046009700240003200087000128000待定10~2567013402080536010700214004200025~509321038078015103130650050~1001628561102254301000>100135112141921.2油液污染分析各种污染度等级对照表ISO代码每毫升油液>10μm颗粒数AC粉末重量水平（毫克/升）MILSTD1246A(1967)NAS1638(1964)SAE749D等级26/23140000100025/2385000100023/201400010070021/18450012201723001120/1614001019/1612001018/155809617/142803008516/1314017415/12706314/124020014/11355213/1014.14112/993011/85210/8310010/