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  • AS 1259.2-1990

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    Acoustics - Sound level meters Integrating - Averaging

    Available format(s):  Hardcopy, PDF 1 User, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Superseded date:  24-06-2021

    Language(s):  English

    Published date:  01-01-1990

    Publisher:  Standards Australia

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

    1 - AS 1259.2-1990 ACOUSTICS - SOUND LEVEL METERS - INTEGRATING - AVERAGING
    4 - PREFACE
    5 - CONTENTS
    6 - 1. Scope
    6 - 1.1 General
    6 - 1.2 Types
    6 - 1.3 Characteristics specified
    7 - 1.4 Tolerances
    7 - 1.5 Tests specified
    7 - 2. Object and general requirements
    7 - 2.1 Object
    7 - 2.2 Applications
    8 - 2.3 General requirements
    8 - 2.4 Method of use
    8 - 3. Definitions
    11 - 4. General characteristics
    12 - 5. Frequency weighting and amplifier characteristics
    12 - 6. Averaging and indicator characteristics
    14 - 7. Overload indication
    14 - 8. Sensitivity to various environments
    15 - 9. Calibration and verification of the basic characteristics
    15 - 9.1 Introduction
    15 - 9.2 Overall instrument characteristics
    16 - 9.3 Amplifier and indicator characteristics
    19 - 10. Provision for use with auxiliary equipment
    19 - 11. Rating information and instruction manual
    22 - APPENDIX A* - DIFFERENCE BETWEEN AVERAGING CAPABILITY OF INTEGRATING AND CONVENTIONAL SOUND LEVEL METERS
    23 - APPENDIX B* - ADDITIONAL SPECIFICATIONS FOR INTEGRATING SOUND LEVEL METERS INDICATING THE AVERAGE A1-WEIGHTED SOUND PRESSURE
    23 - B1. Definition
    23 - B2. Characteristics
    24 - B3. Test
    25 - APPENDIX C* - USE OF FREE FIELD AND DIFFUSE FIELD MICROPHONES
    26 - APPENDIX D* - TESTING THE RESPONSE OF AN INTEGRATING SOUND LEVEL METER TO ONE-CYCLE TONE BURSTS

    Abstract - (Show below) - (Hide below)

    Describes instruments for the measurement of frequency weighted and time averaged sound pressure levels. Optionally, sound exposure levels may be measured. Specifies additional characteristics to those in AS 1259.1 which are necessary to measure the equivalent continuous sound pressure level (Leq) of steady, intermittent, fluctuating and impulsive sounds. Identical with and reproduced from IEC 804.

    Scope - (Show below) - (Hide below)

    This standard describes instruments for the measurement of frequency weighted and time averaged sound pressure levels. Optionally, sound exposure levels may be measured. This standard is consistent with the relevant requirements of IEC Publication 651: Sound Level Meters, but specifies additional characteristics which are necessary to measure the equivalent continuous sound pressure level, Leq, of steady, intermittent, fluctuating and impulsive sounds.Note. - Standardization of an instrument for the measurement of the equivalent continuous sound pressure level and optionally the sound exposure level does not imply that these quantities completely characterize the psychological and physiological effects of sound on man.Though a complete integrating sound level meter is specified, the combination of a conventional sound level meter that satisfies IEC Publication 651 and an accessory or "plug-in" that provides the averaging capability is admissible if the complete system satisfies this standard.The instrument is called "integrating-averaging sound level meter", but the short form "integrating sound level meter" or "averaging sound level meter" may also be used. In this standard, "integrating sound level meter" is used.There are some important differences between the time averaging characteristics of an integrating sound level meter and those of a conventional sound level meter. These differences are discussed in Appendix A.This standard specifies integrating sound level meters of four degrees of accuracy, designated Types 0,1, 2 and 3.For each type, the specification for directional characteristics and frequency weighting and amplifier characteristics are identical to those of IEC Publication 651. Averaging and indicator specifications differ from IEC Publication 651 and it should be noted that they are identical for Types 2 and 3 instruments.The mark "R" on the instrument, if any, indicates that this instrument is calibrated for diffuse field (see Sub-clauses 2.3.3 and 9.1).This standard specifies the following characteristics and test methods for integrating sound level meters: a) integrating and averaging characteristics; b) indicator characteristics; c) overload sensing and indicating characteristics.Integrating sound level meters shall also comply with the requirements in IEC Publication 651 as follows:a) directional characteristics b) frequency weighting characteristics c) sensitivity to various environmentsThe specifications for Types 0, 1, 2 and 3 integrating sound level meters have the same centre values and differ only in the tolerances allowed. Tolerances broaden as the type number increases.This standard specifies electrical and acoustical tests to verify compliance with the characteristics specified (see Sub-clause 1.3).

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

    Committee AV-002
    Document Type Standard
    Publisher Standards Australia
    Status Superseded
    Superseded By
    Supersedes
    Under Revision

    Standards Referenced By This Book - (Show below) - (Hide below)

    AS 2533-2002 Acoustics - Preferred frequencies and band centre frequencies
    AS 1633-1985 Acoustics - Glossary of terms and related symbols
    AS 1259.1-1990 Acoustics - Sound level meters - Non-integrating

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    AS 2913-2000 Evaporative airconditioning equipment
    AS 2221.1-1979 Methods for measurement of airborne sound emitted by compressor units including primemovers and by pneumatic tools and machines Engineering method for measurement of airborne sound emitted by compressor/primemover units intended for outdoor use
    AS/NZS 3200.2.33:1996 Approval and test specification - Medical electrical equipment Particular requirements for safety - Magnetic resonance equipment for medical diagnosis
    AS 2436-1981 Guide to noise control on construction, maintenance and demolition sites
    AS/NZS 2243.5:2004 Safety in laboratories Non-ionizing radiations - Electromagnetic, sound and ultrasound
    AS 2363-1999 Acoustics - Measurement of noise from helicopter operations
    AS/NZS 2394:1994 Conditioning equipment for the treatment of nocturnal enuresis (bedwetting)
    AS 1055.1-1997 Acoustics - Description and measurement of environmental noise - General procedures
    AS 1670.4-2004 Fire detection, warning, control and intercom systems - System design, installation and commissioning Sound systems and intercom systems for emergency purposes
    AS/NZS 1269.4:2014 Occupational noise management Auditory assessment
    AS 2012.2-1990 Acoustics - Measurement of airborne noise emitted by earth-moving machinery and agricultural tractors - Stationary test condition Operator's position
    AS/NZS 2399:1998 Acoustics - Specifications for personal sound exposure meters
    AS/NZS 2107:2000 Acoustics - Recommended design sound levels and reverberation times for building interiors
    AS/NZS 1269.4:1998 Occupational noise management - Auditory assessment
    AS 2012.1-1990 Acoustics - Measurement of airborne noise emitted by earth-moving machinery and agricultural tractors - Stationary test condition Determination of compliance with limits for exterior noise
    AS 2377-2002 Acoustics - Methods for the measurement of railbound vehicle noise
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