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  • BS 848-2.1(2004) : 2004

    Current The latest, up-to-date edition.

    INDUSTRIAL FANS - DETERMINATION OF FAN SOUND POWER LEVELS UNDER STANDARDIZED LABORATORY CONDITIONS - PART 1: GENERAL OVERVIEW

    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 Terms, definitions, symbols and units
    4 Limitations on use
    5 Measurement uncertainty
    6 Instrumentation
    7 Test methods
    8 Fan installation conditions
    9 Fan operating conditions
    10 Information to be recorded
    11 Calculations and evaluations
    12 Test report
    Annex A (normative) Effect of rotational speed changes
    Annex B (informative) Change of gas or air conditions
    Annex C (normative) Corrections for end reflection
    Annex D (informative) Simplified anechoic termination
    Annex E (normative) Uncertainty analysis
    Annex F (normative) Calibration of reference sound source
    Annex G (informative) Filter weighted measurements
    Bibliography

    Abstract - (Show below) - (Hide below)

    Relates with the determination of the acoustic performance of industrial fans. Also used to determine the acoustic performance of fans combined with an ancillary device such as a roof cowl or damper or, where the fan is fitted with a silencer, the sound power resulting from the fan and silencer combination.

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

    Committee MCE/17
    Development Note Also numbered as BS ISO 13347-1 Together with BS ISO 13347-2, BS ISO 13347-3 and BS ISO 13347-4, BS 848-2.2(2004), BS 848-2.3(2004) & BS 848-2.4(2004), it supersedes BS 848-2(1985) (08/2004) Supersedes 02/705653 DC (09/2004)
    Document Type Standard
    Publisher British Standards Institution
    Status Current
    Supersedes

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

    ISO 10302:1996 Acoustics Method for the measurement of airborne noise emitted by small air-moving devices
    ISO 2204:1979 Acoustics Guide to International Standards on the measurement of airborne acoustical noise and evaluation of its effects on human beings
    ISO 13348:2007 Industrial fans — Tolerances, methods of conversion and technical data presentation
    ISO 3744:2010 Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Engineering methods for an essentially free field over a reflecting plane
    ISO 3743-2:1994 Acoustics Determination of sound power levels of noise sources using sound pressure Engineering methods for small, movable sources in reverberant fields Part 2: Methods for special reverberation test rooms
    ISO 9614-1:1993 Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 1: Measurement at discrete points
    ISO 266:1997 Acoustics — Preferred frequencies
    ISO 3740:2000 Acoustics Determination of sound power levels of noise sources Guidelines for the use of basic standards
    IEC 60704-2-7:1997 Household and similar electrical appliances - Test code for the determination of airborne acoustical noise - Part 2-7: Particular requirements for fans
    ISO 13350:2015 Fans Performance testing of jet fans
    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
    ISO 6926:2016 Acoustics Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels
    ISO 13347-3:2004 Industrial fans — Determination of fan sound power levels under standardized laboratory conditions — Part 3: Enveloping surface methods
    ISO 3741:2010 Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Precision methods for reverberation test rooms
    ISO 7235:2003 Acoustics — Laboratory measurement procedures for ducted silencers and air-terminal units — Insertion loss, flow noise and total pressure loss
    ISO 3745:2012 Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Precision methods for anechoic rooms and hemi-anechoic rooms
    ISO 5136:2003 Acoustics — Determination of sound power radiated into a duct by fans and other air-moving devices — In-duct method
    ISO 13347-4:2004 Industrial fans — Determination of fan sound power levels under standardized laboratory conditions — Part 4: Sound intensity method
    ISO 3743-1:2010 Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Engineering methods for small movable sources in reverberant fields Part 1: Comparison method for a hard-walled test room
    ISO 13349:2010 Fans — Vocabulary and definitions of categories
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