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GB/T 17248.6-2007: Acoustics -- Noise emitted by machinery and equipment -- Engineering method for the determination of emission sound pressure levels in situ at the work station and at other specified positions using sound intensity
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Acoustics -- Noise emitted by machinery and equipment -- Engineering method for the determination of emission sound pressure levels in situ at the work station and at other specified positions using sound intensity
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GB/T 17248.6-2007
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Basic data | Standard ID | GB/T 17248.6-2007 (GB/T17248.6-2007) | | Description (Translated English) | Acoustics -- Noise emitted by machinery and equipment -- Engineering method for the determination of emission sound pressure levels in situ at the work station and at other specified positions using sound intensity | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A59 | | Classification of International Standard | 17.140 | | Word Count Estimation | 18,180 | | Date of Issue | 2007-11-14 | | Date of Implementation | 2008-05-01 | | Quoted Standard | GB/T 14573.1; GB/T 14573.1-1993; GB/T 19052; IEC 60942; IEC 61043 | | Adopted Standard | ISO 11205-2003, IDT | | Regulation (derived from) | China Announcement of Newly Approved National Standards No. 12 of 2007 (No. 112 overall) | | 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 specifies an engineering method for determination using sound intensity method field machinery and equipment work station and at other specified position emission sound pressure level, the method is GB/T 17248. 2, GB/T 17248. 3 and GB/T 17248. 5 outside another use for the field measurement method, when the background noise is the sound field index to meet the requirements, the method is applicable to all test environments. This section applies to stationary broadband noise emission devices. The noise at different operating cycles can vary, with or without the noise of discrete frequency components, or narrowband components. | GB/T 17248.6-2007: Acoustics -- Noise emitted by machinery and equipment -- Engineering method for the determination of emission sound pressure levels in situ at the work station and at other specified positions using sound intensity
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Acoustics. Noise emitted by machinery and equipment. Engineering method for the determination of emission sound pressure levels in situ at the work station and at other specified positions using sound intensity
ICS 17.140
A59
National Standards of People's Republic of China
GB/T 17248.6-2007/ISO 11205.2003
Acoustics - Noise emitted by machinery and equipment sound intensity method
Determination of the position of the field work and other specified positions
Emission sound pressure - Engineering method
(ISO 11205.2003, IDT)
Posted 2007-11-14
2008-05-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Introduction Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions
Measurement Uncertainty 3 4
PRINCIPLE 3
6 Instruments 4
Installing and running the sound source 4 7
8 Test Procedure 6
9 record content 7
Content report 10 8
Criterion Appendix A (normative) sound intensity vector direction to meet the requirements of 9
Processing Method Appendix B (normative) frequencies above 5000Hz 10
Processing method Appendix C (normative) Measurement not meet the requirements of 11
Annex D (informative) Example 12 Test Bench
References 13
GB/T 17248.6-2007/ISO 11205.2003
Foreword
GB/T 17248 "Acoustics - Noise emitted by machinery and equipment" includes the following six sections.
--- GB/T 17248.1-2000 Acoustics machinery and equipment noise emission measurement operating position and at other specified positions launch
Guidelines for the use of basic standards of the SPL
--- GB/T 17248.2-1999 Acoustics - Noise emitted by machinery and equipment and other operating positions specified position emission sound pressure
Level measurement over a reflecting plane free field engineering method
--- GB/T 17248.3-1999 Acoustics - Noise emitted by machinery and equipment and other operating positions specified position emission sound pressure
Level measurement method in situ
--- GB/T 17248.4-1998 Acoustics - Noise emitted by machinery and equipment is determined by the sound power level and other working position means
Emission sound pressure level given location
--- GB/T 17248.5-1999 Acoustics - Noise emitted by machinery and equipment and other operating positions specified position emission sound pressure
Level measurement environment Amendment Act
--- GB/T 17248.6-2007 Acoustics - Noise emitted by machinery and equipment sound intensity measurement method work site location and other means
Given position emission sound pressure - Engineering method
This part of GB/T 17248 Part 6, this part identical with ISO 11205.2003 "Acoustic noise emitted by machinery and equipment
Situ measurements of sound intensity method work station and at other specified positions of emission sound pressure - Engineering method "(in English).
This section of the Appendix A, Appendix B, Appendix C is normative appendix, Appendix D is an informative annex.
This section proposed by the Chinese Academy of Sciences.
The acoustics in part by the National Standardization Technical Committee (SAC/TC17) centralized.
This part of the National Standardization Technical Committee responsible for interpreting acoustics.
This part mainly drafted by. Institute of Acoustics, Chinese Academy of Sciences, Hefei University of Technology, Shanghai Electric Institute of Science.
The main drafters of this section. Lv Yadong, Li Zhiyuan, Chen Shao industry, Chengming Kun, Xu Xin.
GB/T 17248.6-2007/ISO 11205.2003
Acoustics - Noise emitted by machinery and equipment sound intensity measurement method field work
Position and other location specified emission sound pressure - Engineering method
1 Scope
This section provides an engineering method (Grade 2 accuracy), which use sound intensity measurement method field machinery and equipment and its operating position
He specified the location of emission sound pressure, which is GB/T 17248.2, GB/T 17248.3 and GB/T 17248.5 outside An alternative
Optional on-site measurements. When the background noise and acoustic field index to meet the requirements, which apply to all of the test environment.
This section applies to stationary broadband noise emitting devices. These noises in different operation periods can vary, noise can be
There is no discrete or narrow-band frequency component or components.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this part. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this section, however, encourage the parties to this part of the research agreement
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this section.
GB/T 14573.1 determining and verifying equipment statistical method prescribed noise emission values Part I. Overview and
Define (GB/T 14573.1-1993, neq ISO 7574-1. 1985)
Noise Noise Test Standards GB/T 19052 Acoustics emitted by machinery and equipment specification drafting and presentation (GB/T 19052-
2003, ISO 12001.1996, IDT)
IEC 60942 electrical sound calibrator
IEC 61043 electrical sound intensity meter microphone pressure measurement pairing Sound
3 Terms and Definitions
The following terms and definitions apply GB/T 17248 in this section.
3.1
Sound field at some point, instantaneous sound on the basis of the instantaneous particle velocity perpendicular to the direction of energy per unit time by time average.
I = lim
T → ∞
Where.
T --- integration time in seconds (s).
Note 1. The sound intensity is a vector, in units of watts per square meter (W/m2).
Note 2. In the specified direction like I like the sound intensity equal to I · shape.
Note 3. In the case of the free spherical wave or a plane wave sound propagation direction is strong
Where.
p --- medium density in kilograms per cubic meter (kg/m
3);
Ba --- speed of sound in meters per second (m/s).
GB/T 17248.6-2007/ISO 11205.2003
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