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GB/T 9069-2008 English PDF

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GB/T 9069-2008: Determination of sound power level for noise emitted by reciprocating pump -- Engineering method
Status: Valid

GB/T 9069: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 9069-2008English529 Add to Cart 4 days [Need to translate] Determination of sound power level for noise emitted by reciprocating pump -- Engineering method Valid GB/T 9069-2008
GB/T 9069-1988English879 Add to Cart 6 days [Need to translate] Determination of sound power level for noise emitted by reciprocating pump--Engineering method Obsolete GB/T 9069-1988

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Basic data

Standard ID GB/T 9069-2008 (GB/T9069-2008)
Description (Translated English) Determination of sound power level for noise emitted by reciprocating pump -- Engineering method
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J71
Classification of International Standard 23.080
Word Count Estimation 23,287
Date of Issue 2008-06-25
Date of Implementation 2009-02-01
Older Standard (superseded by this standard) GB/T 9069-1988
Regulation (derived from) National Standard Approval Announcement 2008 No.11 (Total No.124)
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard provides a reflecting plane under free field conditions sound power level of engineering assays and reverberation room sound power level engineering assay. Determination of sound power levels of interior noise in this standard reverb. Comparison method using standard sound source moves microphone test methods. Multi-point test method, see Appendix A. This standard applies to the determination of sound power levels of noise, including the prime mover, including a reciprocating pump unit (hereinafter referred to as pump units).

GB/T 9069-2008: Determination of sound power level for noise emitted by reciprocating pump -- Engineering method


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Determination of sound power level for noise emitted by reciprocating pump. Engineering method ICS 23.080 J71 National Standards of People's Republic of China Replacing GB/T 9069-1988 Determination of sound power level reciprocating pump - Engineering method Posted 2008-06-25 2009-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Preface Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 the amount of measurement error and measurement needs of 1 5 2 measurement environment 2 6 test equipment 7 Installation and operation of the pump unit 3 8 SPL measurements 3 9 Calculation of sound power levels 5 10 recordings 6 7 11 test reports Appendix A (informative) Pump Unit Indoor reverberation sound power level other measuring methods 8 Appendix B (normative) Environmental correction value K is determined 10 The reference body Appendix C (normative) pump unit, the measurement surface, measuring point and several typical pump unit 12 illustrated reference body Annex D (informative) Determination of record forms and report forms 17

Foreword

This standard is GB/T 9069-1988 "reciprocating pump sound power levels - Engineering method" amendments. This standard compared with GB/T 9069-1988, the main changes are as follows. --- Sound Power in the test method standard sound source (comparison), increasing the mobile microphone test method for determining noise reverberation room Determination of sound power level; --- Original standard D multi-point test method Appendix to reference. The Standard Appendix B, Appendix C are normative appendices, Appendix A, Appendix D is an informative annex. From the date of implementation of this standard instead of GB/T 9069-1988. The standard proposed by China Machinery Industry Federation. This standard by the National Standardization Technical Committee pump (SAC/TC211) centralized. This standard was drafted. Hefei General Machinery Research Institute. The main drafters of this standard. Linze An. This standard replaces the standards previously issued as follows. --- GB/T 9096-1988. Determination of sound power level reciprocating pump - Engineering method

1 Scope

This standard specifies a reflection on the next plane free-field conditions sound power level of engineering assays and reverberation room sound power Level engineering assay. Determination of this standard reverberation room sound power level of the sound source using standard mobile microphone comparison test method, Multi-point test method, see Appendix A. This standard applies to the determination of sound power levels include a prime mover including a reciprocating pump unit (hereinafter referred to as pump units).

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB 3102.7 acoustic quantity and unit (GB 3102.7-1993, eqv ISO 31-7.1992) GB/T 3241 octave and fractional octave filters Determination of noise sources GB/T 3767 sound pressure of sound power levels reflecting plane free field engineering method (GB/T 3767-1996, eqv ISO 3744.1994) GB electric, acoustic performance and test methods 3785 Sound Level Meter GB/T 3947 Acoustics Terminology GB/T 6881.2 Determination of sound pressure Part 1 reverberant field of sound power levels of noise sources for small, movable sources engineering methods Score. hard walled test rooms comparative method (GB/T 6881.2-2002, ISO 3743-1.1994, IDT) GB /Determination of sound power levels of noise sources reverberant field for small, movable sources Engineering Method 2 T 6881.3 sound pressure Part 2. Reverberation chamber method (GB/T 6881.3-2002, ISO 3743-2.1994, IDT) JJG176 acoustic calibrator verification procedures JJG188 sound level meter verification procedures JJG277 sound source standard test procedures IEC 61183 Electroacoustics - sound level meter shot without predetermined sound field and diffuse sound field correction

3 Terms and Definitions

GB/T 3947 and GB 3102.7 established terms and definitions apply to this standard.

4 Determination of the amount required to error and measurement

4.1 Determination of the amount required A-weighted sound power level and the center frequency of the seven octave sound power levels between 125Hz ~ 8000Hz. 4.2 Measurement error Measured in accordance with this standard, A-weighted sound power level of the standard deviation of not more than 2dB; standard deviation octave sound power level is unlikely Table 1 provides value.

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