Einteilung der Filter in Klassen und zugehörige Prüfmethoden
Charter no 2| Characteristic figures |
The avarage level of separation Am (%) | The avarege level of the efficiency Em (%) | The integral factor of initial penetration Di (%) | Local factor of initial penetration DL (%) | |||||||||||
| The test processesThe principal of the measurement | EN 779 - 2002 Weighing |
EN 779 - 2002 Colouring |
EN 1822 Sticking of the particles by CNC or LPC |
EN 1822 Scanning with calculation of particles / visualy |
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| Test aerosol | The air with the synthetic test dust | The air with the atmospher air | The clean +MPPS-DEHS-aerosol | The clean air +MPPS-DEHS-/Paraf.-aerosol | |||||||||||
| The criteria or conditions |
Ea<20% ∆p(konc)=250 Pa |
Ea≥20% ∆p(konc)=450 Pa |
The declared frontiers CNC/LPC<MPPS |
The declared frontiers CNC/LPC<MPPS |
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| The group of filters | The filtr. class |
The frontier of the classes in % | |||||||||||||
| G Filters for coarse dust |
G1 G2 G3 G4 |
|
Em=ca. 35 | ||||||||||||
| F Filters for fine dust |
M5 M6 F7 F8 F9 |
Am=ca. 95 Am=ca. 100 |
|
Di=ca. 15 | |||||||||||
| H HEPA filters for microparticles |
E10 E11 E12 H13 H14 |
Em=ca. 98 | Di ≤ 15 Di ≤ 5 Di ≤ 0,5 Di ≤ 0,05 Di ≤ 0,005 |
not specified not specified not specified DL ≤ 0,25 DL ≤ 0,025 |
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| U ULPA filters for microparticles |
U15 U16 U17 |
Di ≤ 0,0005 Di ≤ 0,00005 Di ≤ 0,000005 |
DL ≤ 0,0025 DL ≤ 0,00025 DL ≤ 0,00010 |
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