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转载——认识ISO 4406清洁度等级[0]

Posted on 2023年11月14日2023年11月15日 by

ISO清洁度等级标准引用了1 mL样品液中大于4、6和14 µm的颗粒数量。

为了确定流体的ISO清洁度代码,将颗粒计数的结果绘制在图形上。图的右侧显示了相应的范围代码,它给出了三种粒径中每一种的清洁度代码编号。对于上面的示例,数据符合ISO 15/13/10。如果不需要第一颗粒大小的数据,或者使用的技术无法提供此数据,例如显微镜计数,则使用“-”,例如 ISO-/ 13/10。系统的ISO 4406级别取决于系统对污染物的敏感性以及用户要求的可靠性级别。

ISO 4406: 13/11/09

样品:25ml,膜过滤

放大倍数:100倍

图示间隔:10μm

颗粒数量:图像可计算出大于4(52)、6(16)和14(4) µm的颗粒数量

污染源:可能一些黑金属

过滤:具有良好的β5过滤

ISO 4406: 19/16/11

样品:25ml,膜过滤

放大倍数:100倍

图示间隔:10μm

颗粒数量:图像可计算出大于4(4200)、6(540)和14 (20)µm的颗粒数量

污染源:光亮的金属、黑金属、氧化硅、塑料等

过滤:系统过滤不足

ISO 4406: 21/19/16

样品:25ml,膜过滤

放大倍数:100倍

图示间隔:10μm

颗粒数量:图像可计算出大于4(12345)、6(3280)和14 (450)µm的颗粒数量

污染源:光亮的金属、黑金属、氧化硅、塑料等

过滤:桶装新油的状态

ISO 4406: 22/20/19

样品:25ml,膜过滤

放大倍数:100倍

图示间隔:10μm

颗粒数量:图像可计算出大于4(31046)、6(7502)和14 (1960)µm的颗粒数量

污染源:光亮的金属、黑金属、氧化硅、塑料、灰尘等

过滤:新系统,带污染物

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