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17/01/2015 Conversions
http://www.sigmacompressors.co.za/conversions2.asp 1/2
SYMBOLS & CONVERSIONS Common symbols and terms used in the measurement ofcompressed air volumes M3/Min = Cubic metres per minuteM3/Hr = Cubic metres per hourL/S = Litres per secondL/Min = Litres per minute To convert from Metric Measurement to C.F.M use thefollowing factors: M3/Min x 35.32 = C.F.M.M3/Hr x 0.589 = C.F.M.L/S x 2.12 = C.F.M.L/Min x 0.0353 = C.F.M. L/S x M/Min x 0.06L/S x M/Hr x 3.6 To calculate volume of air from kilowatt / Horsepower KW x 5.2 = C.F.M.HP x 4.2 = C.F.M. To calculate number of AMPS drawn by electrical motors A) 380 volt supply KW x 2 = AMPS.B) 525 volt supply KW x 1.8 = AMPS. To calculate starting AMPS A) Star Delta AMPS x 3B) Direct on load AMPS x 6