Need help?

EN ISO 3741:2009 Standard

wave
Save  

  Keywords:

#source #frequency #bands #octave #operating

This standard is superseded by:
  •   EN ISO 3741:2010
  •   This standard is no longer addressed in the last official Journal publication of the "2025-08-13 ". This standard is addressed for the last time in the official journal publication of the "2011-04-08"

      Directive

    Machinery (MD) Directive (2006/42/EC)

      Last Official Journal reference

    Friday 8th of April 2011

      Description:

    Acoustics - Determination of sound power levels of noise sources using sound pressure - Precision methods for reverberation rooms (ISO 3741:1999, including Cor 1:2001)

      Purpose

    This International Standard specifies a direct method and a comparison method for determining the soundpower level that would be produced by a source operating in an environment at standard meteorological conditionscorresponding to a characteristic impedance of ρc = 400 N.s/m3 (where ρ is the density of air and c is the speed ofsound). It specifies test room requirements, source location and general rules for operating conditions,instrumentation and techniques for obtaining an estimate of mean-square sound pressure levels from which thesound power levels of the source in octave or one-third-octave bands are calculated with a grade 1 accuracy. Thequantities to be measured are time-averaged sound pressure levels in frequency bands. The quantities to bedetermined are sound power levels, A-weighted and in frequency bands. Other quantities, which are optional, aresound power levels with other frequency weightings calculated from the measurements in frequency bands. Thisstandard does not provide the means to determine directivity and temporal variation of sound from a source.

      Publication

    Tuesday 29th of December 2009

      Cessation

    This standard has been withdrawn on 2011-04-30

      Related Standards

    EN 16774:2016

    Machinery (MD) Directive (2006/42/EC)

    Safety of machinery - Safety requirements for steel converter and associated equipment

    EN 16307-6:2014

    Machinery (MD) Directive (2006/42/EC)

    Industrial trucks - Safety requirements and verification - Part 6: Supplementary requirements for burden and personnel carriers

    EN ISO 13766-2:2018

    Machinery (MD) Directive (2006/42/EC)

    Earth-moving and building construction machinery - Electromagnetic compatibility (EMC) of machines with internal electrical power ...

    EN ISO 14118:2018

    Machinery (MD) Directive (2006/42/EC)

    Safety of machinery - Prevention of unexpected start-up (ISO 14118:2017)

    EN 61800-5-2:2007

    Machinery (MD) Directive (2006/42/EC)

    Adjustable speed electrical power drive systems - Part 5-2: Safety requirements - Functional

    EN ISO 28927-12:2012

    Machinery (MD) Directive (2006/42/EC)

    Hand-held portable power tools - Test methods for evaluation of vibration emission - Part 12: Die grinders (ISO 28927-12:2012)

      Stay up to date

    CELAB is Notified Body No.2037 for the EMC Directive and Italian office of a Notified Body for the RED Directive.

    CELAB performs voluntary inspection activities on technical construction files to check their contents.

    CELAB can accomplish all the required tests in order to affix the CE-marking related to EMC, LVD, RED, MDD, machines and many others.

    CLICK HERE TO GET TESTS AND INFO ON THE EN ISO 3741:2009 STANDARD

      ACCESS

    Search for a standard
    GO

    Register

    Already a member?
    Login

      OTHER APPLICATIONS

    If you are interested in DO160 tests, you can give a try to our other free of charge software:
    CE-Marking assistant, Version: 1.3.0