DFE多次通过测试方法
DFE 多次通过测试方法提高了工业标准,其通过引入动态条件下的负载循环并测量在该
负载条件下的实时动态条件结果而不是取平均值。DFE 同时也指明实时的截留率，以前滤芯
不能正确截留污染物能得到证实。释放截留污染现象被称为卸载，使关键系统受到短时污染。
DFE 测试时循环的条件跟 ***16889 相似，但流速不是常数，DFE 通过控制流量的变化
来保持系统满流量通过滤芯。颗粒计数器一直保持计数颗粒，而计数器之前中间没有油槽，
这样确保测试的污染度是真实的。
每次流量变化之前、之中和之后计数器都进行工作，过滤效率也是采用 Beta 值，过滤百
分比和每毫升的实际颗粒数表示。在正确时间和不同流量情况下进行快速颗粒计数的 DFE 测
试使 Hy-Pro 公司分析和明白每种滤芯的捕获效率和留存率的特点。
DFE测试方法—定量滤芯截留率和留存率
同一生产厂家两种相同
的高效玻纤滤芯的性能，其中一个是根
据 ***16889 多次通过测试，另外一个是
根据 DFE 多次通过测试方法、图表表示
滤芯在测试时下 6[C]颗粒的实际数量。
A2 滤芯是在额定流量和保持稳定
的过滤效率的测试，A1 滤芯是在
流量与***小流量之间循环测试。这样 A1 的
下游的颗粒是变化的，并且在从***小到
流量时颗粒数为。峰值代表
流量变化时的颗粒数，峰谷代表每次流量
变化后的颗粒数，变化的峰值代表流量从
低到高的变化。当 A1 滤芯拦截的污染物增
加，同时流量从低到高时下游的颗粒数量增
加。因此 A1 滤芯没有达到正确设计时污染
物的留存率，这将会是危险的污染源。
A1 滤芯在从低流量到高流量变化时上游和下游的原始颗粒数，A1 滤芯在
从低流量到高流量变化时的颗粒数。下游的颗粒数可以表明流量变化时大量的的大颗粒在动态条
件下没有通过滤芯，这种现象称之为“污染物卸载”。当滤芯截留更多污染物时，更多数量的污染
物将被释放回系统。卸载也可能发生在流速从高到低的变化情况下，在动态条件下滤芯能短暂恢
复，但污染物卸载能引起流体的高污染，使系统遭受破坏和系统性能不可靠。
滤芯A1 A2
过滤比效率 β7[C]＞1000 β7[C]＞1000
高流量112 112
低流量56 -
污染物 （注入率） 3mg/1 3mg/1
DFE测试方法—定量滤芯截留率和留存率
滤芯早期的过度的卸载将是滤材失效的象征。滤芯 B 在 ***16889 多次通过测试
的过滤效率（β7[c]＞1000）。然而当相同的滤芯在 DFE 多次通过测试下 Beta 值将下降。滤材的
选择是基于滤芯生产厂商的 Beta 值。Beta 值是 ***16889 多次通过的产物而没有考虑到系统流
量变化的动态条件。
比较 Hy-Pro 两种相同采用 G7 双层玻纤的性能，所有 Hy-Pro 滤芯采用 G7 或更好
的滤材并根据 DFE 多次通过测试来设计和发展。
滤芯Hy-Pro1 Hy-Pro2
过滤比效率 β7[C]＞1000 β7[C]＞1000
高流量112 112
低流量56 -
污染物 （注入率） 3mg/1 3mg/1
虽然污染物卸载影响是明显的，根据 DFE 测试在
动态流量条件下 Beta 值与 ***16889 多次通过测试都是 β7[C]＞1000。
滤芯 A1 和 Hy-Pro（动态条件）的性能，两种滤芯在 ***16889 和 DFE 测试下都有
***的颗粒截留表现，DFE 测试下的 Hy-Pro 滤芯在下游能够更稳定的颗粒计数和在动态流量
条件下更一致的过滤效率。颗粒留存率的提高将对系统清洁度变得更可预见性。
滤芯
滤芯 A1 Hy-Pro1
过滤比效率 β7[C]＞1000 β7[C]＞1000
高流量112 112
低流量56 56
污染物
（注入率）
3mg/1 3mg/1
HPQ240232S-3MB
HPQ240232S-3MV
HPQ240232S-6MB
HPQ240232S-6MV
HPQ240232S-10MB
HPQ240232S-10MV
HPQ240232S-25MB
HPQ240232S-3MB
HPQ240232S-3MV
HPQ240232S-6MB
HPQ240232S-6MV
HPQ240232S-10MB
HPQ240232S-10MV
HPQ240232S-25MB
HPQ240232S-3MB
HPQ240232S-3MV
HPQ240232S-6MB
HPQ240232S-6MV
HPQ240232S-10MB
HPQ240232S-10MV
HPQ240232S-25MB
HPQ240232S-3MB
HPQ240232S-3MV
HPQ240232S-6MB
HPQ240232S-6MV
HPQ240232S-10MB
HPQ240232S-10MV
HPQ240232S-25MB
HPQ240232S-25MV
HPQ240232S-3MB
HPQ240232S-3MV
HPQ240232S-6MB
HPQ240232S-6MV
HPQ240232S-10MB
HPQ240232S-10MV
HPQ240232S-25MB
HPQ240232S-25MV
HPQ240232HS-3MB
HPQ240232HS-3MV
HPQ240232HS-6MB
HPQ240232HS-6MV
HPQ240232HS-10MB
HPQ240232HS-10MV
HPQ240232HS-25MB
HPQ240232HS-25MV
HPQ240232HS-3MB
HPQ240232HS-3MV
HPQ240232HS-6MB
HPQ240232HS-6MV
HPQ240232HS-10MB
HPQ240232HS-10MV
HPQ240232HS-25MB
HPQ240232HS-25MV
HPQ240232S-3MB
HPQ240232S-3MV
HPQ240232S-6MB
HPQ240232S-6MV
HPQ240232S-10MB
HPQ240232S-10MV
HPQ240232S-25MB
HPGN25SL39-3MB
HPGN25SL39-3MV
HPGN25SL39-6MB
HPGN25SL39-6MV
HPGN25SL39-10MB
HPGN25SL39-10MV
HPGN25SL39-25MB
HPGN25SL39-25MV
HPGN25SL39-3MB
HPGN25SL39-3MV
HPGN25SL39-6MB
HPGN25SL39-6MV
HPGN25SL39-10MB
HPGN25SL39-10MV
HPGN25SL39-25MB
HPGN25SL39-25MV
HPGN25SL39-3MB
HPGN25SL39-3MV
HPGN25SL39-6MB
HPGN25SL39-6MV
HPGN25SL39-10MB
HPGN25SL39-10MV
HPGN25SL39-25MB
HPGN25SL39-3MB
HPGN25SL39-3MV
HPGN25SL39-6MB
HPGN25SL39-6MV
HPGN25SL39-10MB
HPGN25SL39-10MV
HPGN25SL39-25MB
HPGN25SL39-3MB
HPGN25SL39-3MV
HPGN25SL39-6MB
HPGN25SL39-6MV
HPGN25SL39-10MB
HPGN25SL39-10MV
HPGN25SL39-25MB
HPGN25SL39-25MV
HPGN25SL39-3MB
HPGN25SL39-3MV
HPGN25SL39-6MB
HPGN25SL39-6MV
HPGN25SL39-10MB
HPGN25SL39-10MV
HPGN25SL39-25MB
HPGN25SL39-25MV
HPGN25SL39-3MB
HPGN25SL39-3MV
HPGN25SL39-6MB
HPGN25SL39-6MV
HPGN25SL39-10MB
HPGN25SL39-10MV
HPGN25SL39-25MB
HPGN25SL39-25MV
HPGN25SL39-3MB
HPGN25SL39-3MV
HPGN25SL39-6MB
HPGN25SL39-6MV
HPGN25SL39-10MB
HPGN25SL39-10MV
HPGN25SL39-25MB
HPGN25SL39-25MV
HPGN25SL39-3MV
HPGN25SL39-3MV
HPGN25SL39-6MV
HPGN25SL39-6MV
HPGN25SL39-10MV
HPGN25SL39-10MV
HPGN25SL39-25MV
HPGN25SL39-25MV
HPGN25SL39-3MV
HPGN25SL39-3MV
HPGN25SL39-6MV
HPGN25SL39-6MV
HPGN25SL39-10MV
HPGN25SL39-10MV
HPGN25SL39-25MV
HPGN25SL39-25MV
HPGN25SL39-3MB
HPGN25SL39-3MV
HPGN25SL39-6MB
HPGN25SL39-6MV
HPGN25SL39-10MB
HPGN25SL39-10MV
HPGN25SL39-25MB
HPGN25SL39-25MV
HPGN25SL39-3MB
HPGN25SL39-3MV
HPGN25SL39-6MB
HPGN25SL39-6MV
HPGN25SL39-10MB
HPGN25SL39-10MV
HPGN25SL39-25MB
HPGN25SL39-25MV
HPNF300SL19-3MB
HPNF300SL19-3MV
HPNF300SL19-6MB
HPNF300SL19-6MV
HPNF300SL19-10MB
HPNF300SL19-10MV
HPNF300SL19-25MB
HPNF300SL19-25MV
HPNF300SL19-3MB
HPNF300SL19-3MV
HPNF300SL19-6MB
HPNF300SL19-6MV
HPNF300SL19-10MB
HPNF300SL19-10MV
HPNF300SL19-25MB
HPNF300SL19-25MV
HPNF300SL19-3MB
HPNF300SL19-3MV
HPNF300SL19-6MB
HPNF300SL19-6MV
HPNF300SL19-10MB
HPNF300SL19-10MV
HPNF300SL19-25MB
HPNF300SL19-25MV
HPNF300SL19-3MB
HPNF300SL19-3MV
HPNF300SL19-6MB
HPNF300SL19-6MV
HPNF300SL19-10MB
HPNF300SL19-10MV
HPNF300SL19-25MB
HPNF300SL19-25MV
HPNF300SL19-3MB
HPNF300SL19-3MV
HPNF300SL19-6MB
HPNF300SL19-6MV
HPNF300SL19-10MB
HPNF300SL19-10MV
HPNF300SL19-25MB
HPNF300SL19-25MV
HPNF300SL19-3MB
HPNF300SL19-3MV
HPNF300SL19-6MB
HPNF300SL19-6MV
HPNF300SL19-10MB
HPNF300SL19-10MV
HPNF300SL19-25MB
HPNF300SL19-25MV
HPNF300SL19-3MB
HPNF300SL19-3MV
HPNF300SL19-6MB
HPNF300SL19-6MV
HPNF300SL19-10MB
HPNF300SL19-10MV
HPNF300SL19-25MB
HPNF300SL19-25MV
HPNF300SL19-3MB
HPNF300SL19-3MV
HPNF300SL19-6MB
HPNF300SL19-6MV
HPNF300SL19-10MB
HPNF300SL19-10MV
HPNF300SL19-25MB
HPNF300SL19-25MV
HPNF300SL19-3MV
HPNF300SL19-3MV
HPNF300SL19-6MV
HPNF300SL19-6MV
HPNF300SL19-10MV
HPNF300SL19-10MV
HPNF300SL19-25MV
HPNF300SL19-25MV
HPNF300SL19-3MV
HPNF300SL19-3MV
HPNF300SL19-6MV
HPNF300SL19-6MV
HPNF300SL19-10MV
HPNF300SL19-10MV
HPNF300SL19-25MV
HPNF300SL19-25MV
HPNF300SL19-3MB
HPNF300SL19-3MV
HPNF300SL19-6MB
HPNF300SL19-6MV
HPNF300SL19-10MB
HPNF300SL19-10MV
HPNF300SL19-25MB
HPNF300SL19-25MV
HPNF300SL19-3MB
HPNF300SL19-3MV
HPNF300SL19-6MB
HPNF300SL19-6MV
HPNF300SL19-10MB
HPNF300SL19-10MV
HPNF300SL19-25MB
HPNF300SL19-25MV
HPQ210076SL14-3MB
HPQ210076SL14-3MV
HPQ210076SL14-6MV
HPQ210076SL14-10MB
HPQ210076SL14-10MV
HPQ210076SL14-25MB
HPQ210076SL14-25MV
HPQ210076SL14-3MB
HPQ210076SL14-3MV
HPQ210076SL14-6MB
HPQ210076SL14-6MV
HPQ210076SL14-10MB
HPQ210076SL14-10MV
<>HPQ210076SL14-25MB
HPQ210076SL14-25MV
HPQ210076SL14-3MB
HPQ210076SL14-3MV
HPQ210076SL14-6MB
HPQ210076SL14-6MV
HPQ210076SL14-10MB
HPQ210076SL14-10MV
HPQ210076SL14-25MB
HPQ210076SL14-25MV
HPQ210076SL14-3MB
HPQ210076SL14-3MV
HPQ210076SL14-6MB
HPQ210076SL14-6MV
HPQ210076SL14-10MB
HPQ210076SL14-10MV
HPQ210076SL14-25MB
HPQ210076SL14-25MV
HPQ210076SL14-3MB
HPQ210076SL14-3MV
HPQ210076SL14-6MB
HPQ210076SL14-6MV
HPQ210076SL14-10MB
HPQ210076SL14-10MV
HPQ210076SL14-25MB
HPQ210076SL14-25MV
HPQ210076SL14-3MB
HPQ210076SL14-3MV
HPQ210076SL14-6MB
HPQ210076SL14-6MV
HPQ210076SL14-10MB
HPQ210076SL14-10MV
HPQ210076SL14-25MB
HPQ210076SL14-25MV
HPQ210076SL14-3MB
HPQ210076SL14-3MV
HPQ210076SL14-6MB
HPQ210076SL14-6MV
HPQ210076SL14-10MB
HPQ210076SL14-10MV
HPQ210076SL14-25MB
HPQ210076SL14-25MV
HPQ210076SL14-3MB
HPQ210076SL14-3MV
HPQ210076SL14-6MB
HPQ210076SL14-6MV
HPQ210076SL14-10MB
HPQ210076SL14-10MV
HPQ210076SL14-25MB
HPQ210076SL14-25MV
HPQ210076SL14-3MV
HPQ210076SL14-3MV
HPQ210076SL14-6MV
HPQ210076SL14-6MV
HPQ210076SL14-10MB
HPQ210076SL14-10MV
HPQ210076SL14-25MV
HPQ210076SL14-25MV
HPQ210076SL14-3MV
HPQ210076SL14-3MV
HPQ210076SL14-6MV
HPQ210076SL14-6MV
HPQ210076SL14-10MB
HPQ210076SL14-10MV
HPQ210076SL14-25MV
HPQ210076SL14-25MV
HPQ210076HSL14-3MB
HPQ210076HSL14-3MV
HPQ210076HSL14-6MB
HPQ210076HSL14-6MV
HPQ210076HSL14-10MB
HPQ210076HSL14-25MB
HPQ210076HSL14-25MV
HPQ210076HSL14-3MB
HPQ210076HSL14-3MV
HPQ210076HSL14-6MB
HPQ210076HSL14-6MV
HPQ210076HSL14-10MB
HPQ210076HSL14-10MV
HPQ210076HSL14-25MB
HPQ210076HSL14-25MV
HPQ210076SL14-3MB
HPQ210076SL14-3MV
HPQ210076SL14-6MB
HPQ210076SL14-6MV
HPQ210076SL14-10MB
HPQ210076SL14-10MV
HPQ210076SL14-25MB
HPQ210076SL14-25MV
HPQ210076SL14-3MB
HPQ210076SL14-3MV
HPQ210076SL14-6MB
HPQ210076SL14-6MV
HPQ210076SL14-10MB
HPQ210076SL14-10MV
HPQ210076SL14-25MB
HPQ210076SL14-25MV
HPQ210074SL13-3MB
HPQ210074SL13-3MV
HPQ210074SL13-6MB
HPQ210074SL13-6MV
HPQ210074SL13-10MB
HPQ210074SL13-10MV
HPQ210074SL13-25MB
HPQ210074SL13-25MV
HPQ210074SL13-3MB
HPQ210074SL13-3MV
HPQ210074SL13-6MB
HPQ210074SL13-6MV
HPQ210074SL13-10MB
HPQ210074SL13-10MV
HPQ210074SL13-25MB
HPQ210074SL13-25MV
HPQ210074SL13-3MB
HPQ210074SL13-3MV
HPQ210074SL13-6MB
HPQ210074SL13-6MV
HPQ210074SL13-10MB
HPQ210074SL13-10MV
HPQ210074SL13-25MB
HPQ210074SL13-25MV
HPQ210074SL13-3MB
HPQ210074SL13-3MV
HPQ210074SL13-6MB
HPQ210074SL13-6MV
HPQ210074SL13-10MB
HPQ210074SL13-10MV
HPQ210074SL13-25MB
HPQ210074SL13-25MV
HPQ210074SL13-3MB
HPQ210074SL13-3MV
HPQ210074SL13-6MB
HPQ210074SL13-6MV
HPQ210074SL13-10MB
HPQ210074SL13-10MV
HPQ210074SL13-25MB
HPQ210074SL13-25MV
HPQ210074SL13-3MB
HPQ210074SL13-3MV
HPQ210074SL13-6MB
HPQ210074SL13-6MV
HPQ210074SL13-10MB
HPQ210074SL13-10MV
HPQ210074SL13-25MB
HPQ210074SL13-25MV
HPQ210074SL13-3MB
HPQ210074SL13-3MV
HPQ210074SL13-6MB
HPQ210074SL13-6MV
HPQ210074SL13-10MB
HPQ210074SL13-10MV
HPQ210074SL13-25MB
HPQ210074SL13-25MV
HPQ210074SL13-3MB
HPQ210074SL13-3MV
HPQ210074SL13-6MB
HPQ210074SL13-6MV
HPQ210074SL13-10MB
HPQ210074SL13-10MV
HPQ210074SL13-25MB
HPQ210074SL13-25MV
HPQ210074SL13-3MV
HPQ210074SL13-3MV
HPQ210074SL13-6MV
HPQ210074SL13-6MV
HPQ210074SL13-10MV
HPQ210074SL13-10MV
HPQ210074SL13-25MV
HPQ210074SL13-25MV
HPQ210074SL13-3MV
HPQ210074SL13-3MV
HPQ210074SL13-6MV
HPQ210074SL13-6MV
HPQ210074SL13-10MV
HPQ210074SL13-10MV
HPQ210074SL13-25MV
HPQ210074SL13-25MV
HPQ210074HSL13-3MB
HPQ210074HSL13-3MV
HPQ210074HSL13-6MB
HPQ210074HSL13-6MV
HPQ210074HSL13-10MB
HPQ210074HSL13-10MV
HPQ210074HSL13-25MB
HPQ210074HSL13-25MV
HPQ210074HSL13-3MB
HPQ210074HSL13-3MV
HPQ210074HSL13-6MB
HPQ210074HSL13-6MV
HPQ210074HSL13-10MB
HPQ210074HSL13-10MV
HPQ210074HSL13-25MB
HPQ210074HSL13-25MV
HPQ210074SL13-3MB
HPQ210074SL13-3MV
HPQ210074SL13-6MB
HPQ210074SL13-6MV
HPQ210074SL13-10MB
HPQ210074SL13-10MV
HPQ210074SL13-25MB
HPQ210074SL13-25MV
HPQ210074SL13-3MB
HPQ210074SL13-3MV
HPQ210074SL13-6MB
HPQ210074SL13-6MV
HPQ210074SL13-10MB
HPQ210074SL13-10MV
HPQ210074SL13-25MB
HPQ210074SL13-25MV
