DFE 多次通過(guò)測(cè)試方法
DFE 多次通過(guò)測(cè)試方法提高了工業(yè)標(biāo)準(zhǔn),其通過(guò)引入動(dòng)態(tài)條件下的負(fù)載循環(huán)并測(cè)量在該
負(fù)載條件下的實(shí)時(shí)動(dòng)態(tài)條件結(jié)果而不是取平均值。DFE 同時(shí)也指明實(shí)時(shí)的截留率，以前濾芯
不能正確截留污染物能得到證實(shí)。釋放截留污染現(xiàn)象被稱為卸載，使關(guān)鍵系統(tǒng)受到短時(shí)污染。
DFE 測(cè)試時(shí)循環(huán)的條件跟 ISO16889 相似，但流速不是常數(shù)，DFE 通過(guò)控制流量的變化
來(lái)保持系統(tǒng)滿流量通過(guò)濾芯。顆粒計(jì)數(shù)器一直保持計(jì)數(shù)顆粒，而計(jì)數(shù)器之前中間沒(méi)有油槽，
這樣確保測(cè)試的污染度是真實(shí)的。
每次流量變化之前、之中和之后計(jì)數(shù)器都進(jìn)行工作，過(guò)濾效率也是采用 Beta 值，過(guò)濾百
分比和每毫升的實(shí)際顆粒數(shù)表示。在正確時(shí)間和不同流量情況下進(jìn)行快速顆粒計(jì)數(shù)的 DFE 測(cè)
試使 Hy-Pro 公司分析和明白每種濾芯的捕獲效率和留存
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HP33RNL10-12MV
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HP16RNL8-12MB-87
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HP33RNL8-25WSB-87
HP165RNL9-3MSCB
HP66RNL14-25MB-87
HP165RNL5-25MSB
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HP06DNL7-149WB
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HP165RNL9-6MSV
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HP03DHL4-3ME
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HP06DNL7-74WB
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HP66RNL14-25MV
HP33RNL8-74WV
HP06RNL7-25WCB
HP84L39-6MB
HP95RNL14-25WCB
HP06DHL7-3ME
HP33RNL10-25MCB
HP16DNL14-74WB
HP16RNL8-25WCB
HP16RNL8-25WCB
