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  • BS ISO 13347-4 : 2004

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    INDUSTRIAL FANS - DETERMINATION OF FAN SOUND POWER LEVELS UNDER STANDARDIZED LABORATORY CONDITIONS - PART 4: SOUND INTENSITY METHOD

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  01-01-2004

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    Foreword
    Introduction
    1 Scope
    2 Normative references
    3 Instruments and methods of test
    4 Equipment and test set-ups
    5 Test method
    6 Calculations
    7 Report and results
    Annex A (normative) - Indicators for use in case
            of difficulty
    Annex B (normative) - Alternative procedure for
            testing of large fan equipment
    Annex C (normative) - Radiation of sound by fan casing
    Bibliography

    Abstract - (Show below) - (Hide below)

    Applicable to industrial fans as defined in ISO 5801 and ISO 13349. Determines sound power by using sound intensity measurements on a measurement surface which encloses the sound source. It provides guidelines on the acoustical environment, ambient noise, measurement surface, and number of measurements.

    General Product Information - (Show below) - (Hide below)

    Committee MCE/17
    Development Note Also numbered as BS 848-2.4(2004) Together with BS ISO 13347-1, BS ISO 13347-2, BS ISO 13447-3, BS 848-2.1(2004), BS 848-2.2(2004) and BS 848-2.3(2004), it supersedes BS 848-2(1985) (08/2004) Supersedes 02/705656 DC. (09/2004) Reviewed and confirmed by BSI, February 2008. (01/2008)
    Document Type Standard
    Publisher British Standards Institution
    Status Current
    Supersedes

    Standards Referencing This Book - (Show below) - (Hide below)

    AMCA 303 : 79(R2012) APPLICATION OF SOUND POWER LEVEL RATINGS FOR FANS
    AMCA 301 : 2014 METHODS FOR CALCULATING FAN SOUND RATINGS FROM LABORATORY TEST DATA
    ISO 9614-1:1993 Acoustics Determination of sound power levels of noise sources using sound intensity Part 1: Measurement at discrete points
    ISO 9614-2:1996 Acoustics Determination of sound power levels of noise sources using sound intensity Part 2: Measurement by scanning
    ISO 5801:2017 Fans — Performance testing using standardized airways
    ISO 13347-2:2004 Industrial fans Determination of fan sound power levels under standardized laboratory conditions Part 2: Reverberant room method
    IEC 61094-2:2009 Electroacoustics - Measurement microphones - Part 2: Primary method for pressure calibration of laboratory standard microphones by the reciprocity technique
    ISO 13347-1:2004 Industrial fans Determination of fan sound power levels under standardized laboratory conditions Part 1: General overview
    ISO 5136:2003 Acoustics Determination of sound power radiated into a duct by fans and other air-moving devices In-duct method
    ISO 13349:2010 Fans — Vocabulary and definitions of categories
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