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GB/T 17248.6-2007 English PDF

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US$354.00 · In stock
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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
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 17248.6-2007	354	Add to Cart	3 days	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	Valid

Similar standards

GB/T 15173 GB/T 19889.1 GB/T 18696.1 GB/T 17248.1 GB/T 17248.3 GB/T 17248.5

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

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
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

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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Question 1: How long will the true-PDF of GB/T 17248.6-2007_English be delivered?

Answer: Upon your order, we will start to translate GB/T 17248.6-2007_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 17248.6-2007_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 17248.6-2007_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.