Quartz CWM 55 Technical Manual
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-4-AIR THROWS--o--o--O--O--O--o--o--HYDRAULIC RESISTANCES--o--o--O--O--O--o--o--SOUND POWER and SOUND PRESSURE LEVELS973 SERIES CWM (L) ( speed 1 = lowest, 3 = highest)SOUND POWER LEVELSSOUND PRESSURE LEVELSFrequency HzMODEL SPEED 125 250 500 1K 2K 4K dBA dBA NC55MIN 36.8 37 39.1 38.8 34.4 31.7 43 25 19MED 41 43.4 45.8 45.1 39.6 35.4 49 31 25MAX 46.7 48.6 50.6 50.4 46.6 39 54 37 3175MIN 39.1 44.3 47.2 46.8 41.6 40.8 51 33 27MED 43.8 49.1 51.3 51.3 46.7 39.5 55 37 32MAX 45.5 50.5 53.7 52.9 48.7 40.8 57 39 34105MIN 34.1 38 44 42.3 41 38 48 30 24MED 42.7 45.8 48.9 49.1 44.2 38.1 53 35 30MAX 46.4 51.6 54.2 54.2 49.9 42.9 57 40 35Sound Power Levels obtained in conformance with BS 4196: Part 5: 1981. Values are shown in dB with a standardreference of 1 pW.Sound Pressure Levels are dB relative to 2 x 10 -5N/m2 and are calculated from results measured in anechoic conditions.Values relate to a position of 3m away from the centre line of the unit, 1m down. |
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