Acoustics. Determination of sound power radiated into a duct by fans and other air-moving devices. In-duct method not-for-sale The guidelines in BS EN

The guidelines in BS EN 60603-7-3 help you to perceive specifications for data transmission for connectors that enable you to provide a superior quality product to your customers

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Acoustics. Determination of sound power radiated into a duct by fans and other air-moving devices. In-duct method not-for-sale The guidelines in BS EN1 Scope 1. 1 General This International Standard specifies a method for testing ducted fans and other air moving devices to determine the sound power radiated into an anechoically terminated duct on the inlet and or outlet side of the equipment. NOTE 1 For the sake of brevity, wherever the term fan occurs in the text, it means fan or other air moving device. The method is applicable to fans which emit steady, broad band, narrow band and discrete