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率的特點(diǎn)。
DFE 測(cè)試方法—定量濾芯截留率和留存率
同一生產(chǎn)廠家兩種相同
的高效玻纖濾芯的性能，其中一個(gè)是根
據(jù) ISO16889 多次通過(guò)測(cè)試，另外一個(gè)是
根據(jù) DFE 多次通過(guò)測(cè)試方法、圖表表示
濾芯在測(cè)試時(shí)下 6?[C]顆粒的實(shí)際數(shù)量。
A2 濾芯是在額定流量和保持穩(wěn)定
的過(guò)濾效率的測(cè)試，A1 濾芯是在
流量與最小流量之間循環(huán)測(cè)試。這樣 A1 的
下游的顆粒是變化的，并且在從最小到
流量時(shí)顆粒數(shù)為。峰值代表
流量變化時(shí)的顆粒數(shù)，峰谷代表每次流量
變化后的顆粒數(shù)，變化的峰值代表流量從
低到高的變化。當(dāng) A1 濾芯攔截的污染物增
加，同時(shí)流量從低到高時(shí)下游的顆粒數(shù)量增
加。因此 A1 濾芯沒(méi)有達(dá)到正確設(shè)計(jì)時(shí)污染
物的留存率，這將會(huì)是危險(xiǎn)的污染源。
A1 濾芯在從低流量到高流量變化時(shí)上游和下游的原始顆粒數(shù)，A1 濾芯在
從低流量到高流量變化時(shí)的顆粒數(shù)。下游的顆粒數(shù)可以表明流量變化時(shí)大量的的大顆粒在動(dòng)態(tài)條
件下沒(méi)有通過(guò)濾芯，這種現(xiàn)象稱之為“污染物卸載”。當(dāng)濾芯截留更多污染物時(shí)，更多數(shù)量的污染
物將被釋放回系統(tǒng)。卸載也可能發(fā)生在流速?gòu)母叩降偷淖兓闆r下，在動(dòng)態(tài)條件下濾芯能短暫恢
復(fù)，但污染物卸載能引起流體的高污染，使系統(tǒng)遭受破壞和系統(tǒng)性能不可靠。
濾芯?A1 A2
過(guò)濾比效率 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
0030D005BH4HC-V
HP03DHL4-6MV
0030D005BHHC
HP03DHL4-6MB
0030D005BHHC-V
HP03DHL4-6MV
0030D005BH-V
HP03DHL4-6MV
0030D005BN
HP03DNL4-6MB
0030D005BN3HC
HP03DNL4-6MB
0030D005BN3HC-V
HP03DNL4-6MV
0030D005BN4HC
HP03DNL4-6MB
HP03DNL4-6ME
0030D005BN4HC-V
HP03DNL4-6MV
0030D005BNHC
HP03DNL4-6MB
0030D005BNHC-V
HP03DNL4-6MV
0030D005BN-V
HP03DNL4-6MV
0030D005V
HP03DHL4-6SFV
0030D005V-V
HP03DHL4-6SFV
0030D010BH
HP03DHL4-12MB
0030D010BH3HC
HP03DHL4-12MB
0030D010BH3HC-V
HP03DHL4-12MV
0030D010BH4HC
HP03DHL4-12MB
0030D010BH4HC-V
HP03DHL4-12MV
0030D010BHHC
HP03DHL4-12MB
0030D010BHHC-V
HP03DHL4-12MV
0030D010BH-V
HP03DHL4-12MV
0030D010BN
HP03DNL4-12MB
0030D010BN3HC
HP03DNL4-12MB
0030D010BN3HC-V
HP03DNL4-12MV
0030D010BN4HC
HP03DNL4-12MB
HP03DNL4-12ME
0030D010BN4HC-V
HP03DNL4-12MV
0030D010BNHC
HP03DNL4-12MB
0030D010BNHC-V
HP03DNL4-12MV
0030D010BN-V
HP03DNL4-12MV
0030D010V
HP03DHL4-10SFV
0030D010V-V
HP03DHL4-10SFV
0030D020BH
HP03DHL4-25MB
0030D020BH3HC
HP03DHL4-25MB
0030D020BH3HC-V
HP03DHL4-25MV
0030D020BH4HC
HP03DHL4-25MB
0030D020BH4HC-V
HP03DHL4-25MV
0030D020BHHC
HP03DHL4-25MB
0030D020BHHC-V
HP03DHL4-25MV
0030D020BH-V
HP03DHL4-25MV
0030D020BN
HP03DNL4-25MB
0030D020BN3HC
HP03DNL4-25MB
0030D020BN3HC-V
HP03DNL4-25MV
0030D020BN4HC
HP03DNL4-25MB
0030D020BN4HC-V
HP03DNL4-25MV
0030D020BNHC
HP03DNL4-25MB
0030D020BNHC-V
HP03DNL4-25MV
0030D020BN-V
HP03DHL4-25SFV
0030D020V-V
HP03DHL4-25SFV
0030D025W
HP03DNL4-25WB
0030D025W/HC
HP03DNL4-25WB
HP03DNL4-25WE
0030D025W/HC-V
HP03DNL4-25WV
0030D025W-V
HP03DNL4-25WV
0030D050W
HP03DNL4-50WB
0030D050W/HC-SS316
HP03DNL4-50WV
0030D074W
HP03DNL4-74WB
0030D074WHC
HP03DNL4-74WB
0030D074WHC-V
HP03DNL4-74WV
0030D100W
HP03DNL4-149WB
0030D100WHC
HP03DNL4-100WB
0030D149W
HP03DNL4-149WB
0030D149WHC
HP03DNL4-149WB
0030D149WHC-V
HP03DNL4-149WV
00310203
HP33RNL10-10SFSV
00310475
HP75L8-3MB
HP0007L2-10MB
HP0007L2-3MB
HP06RNL7-40WB-87
HP95RNL18-100WB
HP33DNL14-6MB
HP33DHL10-10SFSV
HP66RNL14-25WCB
HP66RNL18-60WB
HP33RNL8-40AB
HP95RNL18-40AB
HP33RNL10-40AB
HP66RNL14-40AB
HP66RNL18-40AB
HP95RNL14-40AB
HP75L8-6MB
HP75L8-25MB
HP75L8-12MB
HP33DHL10-3SFSV
HP95RNL36-40AB
HP74L4-12MB
HP33DNL7-50WB
HP98L9-6MB
HP98L9-10MB
HPQ96104L10-10MB
HP400L15-3MB
HP400L15-6MB
HP400L15-10MB
HP400L15-25MB
HP06DNL7-3MSB
HP06DNL7-6MSB
HP06DNL7-12MSB
HP06DNL7-25MSB
HP06DNL10-3MSB
HP06DNL10-6MSB
HP06DNL10-12MSB
HP06DNL10-25MSB
HP32NL10-3MB
HP32NL10-6MB
HP32NL10-10MB
HP32NL10-25MB
HP06DHL7-3MSB
HP06DHL7-6MSB
HP06DHL7-12MSB
HP06DHL7-25MSB
HP06DHL10-3MSB
HP06DHL10-6MSB
HP06DHL10-12MSB
HP06DHL10-25MSB
HP32HL10-3MB
HP32HL10-6MB
HP32HL10-10MB
HP32HL10-25MB
0035D003BH3HC
HP075HL3-3MB
0035D003BH3HC-V
HP075HL3-3MV
0035D003BH4HC
HP075HL3-3MB
0035D003BH4HC-V
HP075HL3-3MV
0035D003BHHC
HP075HL3-3MB
0035D003BHHC-V
HP075HL3-3MV
0035D003BN3HC
HP075NL3-3MB
0035D003BN3HC-V
HP075NL3-3MV
0035D003BN4HC
HP075NL3-3MB
0035D003BN4HC-V
HP075NL3-3MV
0035D003BNHC
HP075NL3-3MB
0035D003BNHC-V
HP075NL3-3MV
0035D005BH3HC
HP075HL3-6MB
0035D005BH3HC-V
HP075HL3-6MV
0035D005BH4HC
HP075HL3-6MB
0035D005BH4HC-V
HP075HL3-6MV
0035D005BHHC
HP075HL3-6MB
0035D005BHHC-V
HP075HL3-6MV
0035D005BN3HC
HP075NL3-6MB
0035D005BN3HC-V
HP075NL3-6MV
0035D005BN4HC
HP075NL3-6MB
0035D005BN4HC-V
HP075NL3-6MV
0035D005BNHC
HP075NL3-6MB
0035D005BNHC-V
HP075NL3-6MV
0035D0100W/HC
HP075NL3-100WB
0035D0100W/HC-V
HP075NL3-100WV
0035D010BH3HC
HP075HL3-10MB
0035D010BH3HC-V
HP075HL3-10MV
0035D010BH4HC
HP075HL3-10MB
0035D010BH4HC-V
HP075HL3-10MV
0035D010BHHC
HP075HL3-10MB
0035D010BHHC-V
HP075HL3-10MV
0035D010BN3HC
HP075NL3-10MB
0035D010BN3HC-V
HP075NL3-10MV
0035D010BN4HC
HP075NL3-10MB
0035D010BN4HC-V
HP075NL3-10MV
HP075NL3-10MB
0035D010BNHC-V
HP075NL3-10MV
0035D0200W/HC
HP075NL3-200WB
0035D0200W/HC-V
HP075NL3-200WV
0035D020BH3HC
HP075HL3-20MB
0035D020BH3HC-V
HP075HL3-20MV
0035D020BH4HC
HP075HL3-20MB
0035D020BH4HC-V
HP075HL3-20MV
0035D020BHHC
HP075HL3-20MB
0035D020BHHC-V
HP075HL3-20MV
0035D020BN3HC
HP075NL3-20MB
0035D020BN3HC-V
HP075NL3-20MV
0035D020BN4HC
HP075NL3-20MB
0035D020BN4HC-V
HP075NL3-20MV
0035D020BNHC
HP075NL3-20MB
0035D020BNHC-V
HP075NL3-20MV
0035D025W/HC
HP075NL3-25WB
0035D025W/HC-V
HP075NL3-25WV
0035D050W/HC
HP075NL3-50WB
0035D050W/HC-V
HP075NL3-50WV
0040DN003BH4HC
HP06DHL5-3MSB
0040DN003BN4HC-V
HP06DNL5-6MSV
0040DN003BNHC
HP06DNL5-3MSB
0040DN006BH4HC
HP06DHL5-6MSB
0040DN006BHHC
HP06DHL5-6MSB
0040DN006BN3HC
HP06DNL5-6MSB
0040DN006BNHC
HP06DNL5-6MSB
0040DN010BH3HC
HP06DHL5-12MSB
0040DN010BH4HC
HP06DHL5-12MSB
0040DN010BHHC
HP06DHL5-12MSB
0040DN010BN3HC
HP06DNL5-12MSB
0040DN010BN4HC
HP06DNL5-12MSB
0040DN010BN4HC-V
HP06DNL5-12MSV
0040DN010BNHC
HP06DNL5-12MSB
0040DN025BH3HC
HP06DHL5-25MSB
0040DN025BH4HC
HP06DHL5-25MSB
0040DN025BHHC
HP06DHL5-25MSB
0040DN025BN3HC
HP06DNL5-25MSB
0040DN025BN4HC
HP06DNL5-25MSB
0040DN025BN4HC
HP06DNL5-25MSV
0040DN025BNHC
HP06DNL5-25MSB
0040DN025WHC
HP06DNL5-25WB
0040RN003BN3HC
HP98L4-3MB
0040RN003BN4HC
HP98L4-3MB
0040RN003BNHC
HP98L4-3MB
0040RN006BN3HC
HP98L4-6MB
0040RN006BN4HC
HP98L4-6MB
0040RN006BNHC
HP98L4-6MB
0040RN010BN3HC
HP98L4-10MB
0040RN010BN4HC
HP98L4-10MB
0040RN010BNHC
HP98L4-10MB
0040RN025BN3HC
HP98L4-25MB
0040RN025BN4HC
HP98L4-25MB
0040RN025BNHC
HP98L4-25MB
HP075NL5-3MB
0055D005BN4HC
HP075NL5-6MB
0055D010BH4HC-V
HP075HL5-10MV
0055D010BHHC
HP075HL5-10MB
0055D010BHHC2
HP075HL5-10MB
0055D010BHHC2-V
HP075HL5-10MV
0055D010BHHC-V
HP075HL5-10MV
0055D010BN3HC
HP075NL5-10MB
0055D010BN3HC-V
HP075NL5-10MV
0055D010BN4HC
HP075NL5-10MB
0055D010BN4HC-V
HP075NL5-10MV
0055D010BNHC
HP075NL5-10MB
0055D010BNHC2
HP075NL5-10MB
0055D010BNHC2-V
HP075NL5-10MV
0055D010BNHC-V
HP075NL5-10MV
0055D020BH3HC
HP075HL5-20MB
0055D020BH3HC-V
HP075HL5-20MV
0055D020BH4HC
HP075HL5-20MB
0055D020BH4HC-V
HP075HL5-20MV
0055D020BHHC
HP075HL5-20MB
0055D020BHHC2
HP075HL5-20MB
HP075HL5-20MV
0055D020BHHC-V
HP075HL5-20MV
0055D020BN3HC
HP075NL5-20MB
0055D020BN3HC-V
HP075NL5-20MV
0055D020BN4HC
HP075NL5-20MB
0055D020BN4HC-V
HP075NL5-20MV
0055D020BNHC
HP075NL5-20MB
0055D020BNHC2
HP075NL5-20MB
0055D020BNHC2-V
HP075NL5-20MV
0055D020BNHC-V
HP075NL5-20MV
0055D025WNHC
HP075NL5-25WB
0055D025WNHC-V
HP075NL5-25WV
在線咨詢 
