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  • BS EN ISO 11691:1997

    Current The latest, up-to-date edition.

    Acoustics. Measurement of insertion loss of ducted silencers without flow. Laboratory survey method

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  15-03-1997

    Publisher:  British Standards Institution

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

    Foreword
    1 Scope
    2 Normative references
    3 Definitions
    4 Test facility
    5 Test procedure
    6 Information to be recorded
    7 Information to be reported
    Annex A (informative) - Bibliography
    Annex ZA (informative) - Relationship between this European
             Standard and the Essential Requirements of EU
             Directive 98/37/EC
    Annex ZB (informative) - Relationship between this European
             Standard and the Essential Requirements of EU
             Directive 2006/42/EC

    Abstract - (Show below) - (Hide below)

    Defines a laboratory substitution method for determine the insertion loss without flow of ducted, mainly absorbent, circular and rectangular silencers, as well as other duct elements for use in ventilating and air-conditioning systems.

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

    Committee EH/1
    Development Note Supersedes 93/502132 DC. (11/2005)
    Document Type Standard
    Publisher British Standards Institution
    Status Current
    Superseded By
    Supersedes

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

    ISO 5725-1:1994 Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions
    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 9614-1:1993 Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 1: Measurement at discrete points
    IEC 60942:2003 Electroacoustics - Sound calibrators
    ISO 9614-2:1996 Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 2: Measurement by scanning
    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
    1998/37/EC : 1998 DIRECTIVE 98/37/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL OF 22 JUNE 1998 ON THE APPROXIMATION OF THE LAWS OF THE MEMBER STATES RELATING TO MACHINERY
    IEC 61260:1995 Electroacoustics - Octave-band and fractional-octave-band filters
    IEC 60651:1979+AMD1:1993+AMD2:2000 CSV Sound level meters
    IEC 60804:2000 Integrating-averaging sound level meters
    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
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