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Introduction to the different efficiencies of air filters
Introduction to the different efficiencies of air filtersI. National standard GB/T14295-93 "air filter" and GB13554-92 "high-efficiency air filter" specified efficiency range1. Coarse filter: filtering efficiency of ≥ 5 micron particles 80>E≥20, primary resistance ≤ 50Pa. 2. Medium efficiency filter: filtering efficiency of ≥1 micron particles 70>E≥20, initial resistance ≤80Pa. 3. High and medium efficiency filter: 99>E≥70 for ≥1 micron particles, initial resistance≤100Pa. 4. Sub-high efficiency filter: filtering efficiency E≥95 for ≥ 0.5-micron particles, initial resistance≤120Pa. 5. High-efficiency filter: filtering efficiency E≥99.99 for ≥ 0.5-micron particles, initial resistance≤220Pa. 6. Ultra-high efficiency filter: ≥ 0.1-micron particle filtration efficiency E ≥ 99.999, the initial resistance ≤ 280Pa. II. The efficiency range of imported filters (European standard) 1. High-efficiency filters are divided into two levels (H12, H13): H12 efficiency: the particle size ≥ 0.5μm filter efficiency E ≥ 99.9%. H13 efficiency: filtering efficiency E≥99.99% for particle size ≥0.5μm. 2. Sub-high efficiency filters are divided into two levels (H10, H11): H10 efficiency: for particle size ≥ 0.5μm filtration efficiency 99>E≥95%. H11 efficiency: 99.9>E≥99% for particle size≥0.5μm. 3. Medium efficiency filter is divided into two levels (F5, F6): F5 efficiency: the particle size ≥ 1.0μm filter efficiency 50>E≥30%. F6 efficiency: for particle size ≥ 1.0μm filtration efficiency 80>E≥50%. 4. Coarse efficiency filters are divided into four levels (G1 - G4): G1 efficiency: the particle size ≥ 5.0μm filter efficiency E ≥ 20%. G2 efficiency: for particle size ≥ 5.0μm filtration efficiency 50>E≥20%. G3 efficiency: for particle size ≥5.0μm filter efficiency 70>E≥50%. G4 efficiency: for particle size ≥ 5.0μm filtration efficiency 90>E≥70%. |
