Transcription of Air filter selection chart
1 Air filter selection chartPerformanceratingAverage arrestanceArrestance (Am)No. 4 test dustMaximum final resistance PaG1G2G3G4F5F6F7F8F9Am < 6525025025025045045045045045040 = Em < 60<65 = Am < 80<Average arrestanceEffieciency (Em)No. 1 test dustFilter performance ratings to Australian Standard = Am < 90<90 = Am<60 = Em < 80<80 = Em < 90<95 = Em<90 = Em < 95< filter typesType 1: DryType 2: Viscous impingement Adhesive (gel) coatedType 3: Metal viscous, MVO or honeycomb grease typeType 4: Electrostatic precipitatorsFilter classesClass A: Fully disposable, entire filter Disposable panel filtersClass B: Replaceable media reusable frame FT3 bag filters C: Reusable frame and media, after cleaning Washable panels or bag filtersClass D: Self-renewable Automatic roll filter to on-going product development, Filterfit reserves the right to change design and specifications without noticePAGE - 63 -Air filter selection chartTypical particle arrestance efficiency for various grades of filter mediaParticulate diameter in microns1 micron = 1/1000 of a mm10 micron = 10/1000 of a mm and is the smallest particle able to been seen by the human micron5 micron1 test dusts approximate micron sizesNo.
2 I ( methylene blue) - mass median diameter of .65 microns Cotton fibres23% Mollocco micron72% Air Cleaner fibres39%0 to 5 micron18%5 to 10 micron16%10 to 20 micron18%20 to 40 micron9%40 to 80 micronSizes of particlesHeavy industrial dusts - up to 4000 micron (4mm) Fine road dust - 5 to 20 micronDense smoke carbons and cigarette smoke - to 1 micron bacteria - to 10 micronsPollens - 5 to 80 micronMould spores - 3 to 15 micronsViruses - to 0 .25 micronsDue to on-going product development, Filterfit reserves the right to change design and specifications without noticePAGE - 64 -secondaryFor more information on HEPA or ULPA grades please contact your local distributorSubstanceapproximate range of particle diameters (microns)Rain drops500 - 5000 Natural mist60 - 500 Natural fog2 - 60 Pollens10 - 100 Ground - - 35 Plant spores10 - 35 Insecticide -10 Stoker fly ash10 - 8000 Pulverized coal, fly ash1 - 50 Foundry dusts1 - 1000 Cement dust3 - 100 Metallurgical - 100 Dust damaging to - 5 Oil - - - - (paints)
3 - - hair35 - 200 Conversion factorsLength Area1 inch = mm = centimeters 1 square metre = square feet1 metre = 100 centimetres = ft 1 square foot = square meters1 ft = 305 mm = centimetres1 ft = 12 InchesImperial - MetricMetric - ImperialInches x = mmFeet x = Metres/feet/min x = Metres/secSquare feet x = square metresCubic feet/min x = Litres/secInches water gauge x = Pascals gaugeCFM x = litres per secondmm x = inchesMeters x = feet meters/sec x 197 = feet/minSquare meters x = squareLitres/sec x = cubic feet/min Pascals x = inches water3m hr x = CFMDue to on-going product development, Filterfit reserves the right to change design and specifications without noticePAGE - 65 -Particle size tabl
