ASTM F1334-2008 Standard Test Method for Determining A-Weighted Sound Power Level of Vacuum Cleaners《测定真空吸尘器A-加重声音功率级的标准试验方法》.pdf
《ASTM F1334-2008 Standard Test Method for Determining A-Weighted Sound Power Level of Vacuum Cleaners《测定真空吸尘器A-加重声音功率级的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM F1334-2008 Standard Test Method for Determining A-Weighted Sound Power Level of Vacuum Cleaners《测定真空吸尘器A-加重声音功率级的标准试验方法》.pdf(8页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: F 1334 08An American National StandardStandard Test Method forDetermining A-Weighted Sound Power Level of VacuumCleaners1This standard is issued under the fixed designation F 1334; the number immediately following the designation indicates the year oforiginal adoption or, in the case of
2、 revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method calculates the overall A-weightedsound power level emitted by small portable
3、upright, canister,combination vacuum cleaners, and central vacuum cleanermotorized nozzles intended for operation in domestic andcommercial applications.1.1.1 To determine the Sound Power Level of a centralvacuum at the power unit location refer to Test Method F 2544.1.2 A-weighted sound pressure me
4、asurements are per-formed on a stationary vacuum cleaner in a semi-reverberantroom. This test method determines sound power by a compari-son method for small noise sources, that is, comparison to abroadband reference sound source.1.3 This test method describes a procedure for determiningthe approxim
5、ate A-weighted sound power level of small noisesources. This test method uses a non-special semi-reverberantroom.1.4 Results are expressed as A-weighted sound power levelin decibels (referenced to one picowatt).1.5 The values stated in inch-pound units are to be regardedas the standard. The values i
6、n parentheses are for informationonly.1.6 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory li
7、mitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C 634 Terminology Relating to Building and Environmen-tal AcousticsE 177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE 691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Me
8、thodF 608 Test Method for Evaluation of Carpet Embedded DirtRemoval Effectiveness of Household/Commercial VacuumCleanersF 655 Specification for Test Carpets and Pads for VacuumCleaner TestingF 2544 Test Method for Determining A-Weighted SoundPower Level of Central Vacuum Power Units2.2 ANSI Standard
9、s:3ANSI S1.10 Method for the Calibration of MicrophonesANSI S1.43 Specifications for Integrating-Averaging SoundLevel MetersANSI S12.51/ISO 3741 Acoustics - Determination of soundpower levels of noise sources using sound pressure -Precision methods for reverberation roomsANSI S12.53/ISO 3743 Acousti
10、cs - Determination of soundpower levels of noise sources - Engineering methods forsmall, movable sources in reverberant fieldsANSI S12.57/ISO 3747 StandardAcoustics - Determinationof sound power levels of noise sources using soundpressure - Comparison method in situ3. Terminology3.1 Definitions:3.1.
11、1 population, nthe total of all of the units of theparticular model or type, or both, of vacuum cleaner beingtested.3.1.2 population sample or sample, nthree or more testunits, randomly taken from the population.3.1.3 reference sound source, na standard source ofbroadband sound with a certified set
12、of sound power emissions.3.1.4 source, na device that emits sound. This may be thevacuum cleaner or a motorized nozzle.3.1.5 test unit or unit, na single vacuum cleaner or nozzleof the model or type, or both, being tested.3.1.6 Unless otherwise indicated, definitions are in accor-dance with Terminol
13、ogy C 634.1This test method is under the jurisdiction ofASTM Committee F11 on VacuumCleaners and is the direct responsibility of Subcommittee F11.25 on SoundMeasurement.Current edition approved Feb. 1, 2008. Published March 2008. Originallyapproved in 1991. Last previous edition approved in 2002 as
14、F 1334 02.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institu
15、te, 11 W. 42nd St., 13thFloor, New York, NY 10036.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4. Significance and Use4.1 The test results enable the comparison of A-weightedsound emission from vacuum cleaners when tested under th
16、econdition of this test method.5. Test Room Requirements5.1 The test room shall be semi-reverberant. It shall containsufficiently little sound absorption material so the requirementsof 5.2 can be met. It should be large enough to meet thedimension requirements of 5.2.5.1.1 When a central vacuum clea
17、ner motorized nozzle is tobe tested, the test room should be plumbed for a centralvacuum system according to the manufacturers instructionsusing standard 2.00-in. diameter thin-wall PVC tubing. Asingle wall inlet shall be located in the test room.5.2 Identify a location on the test room floor which
18、canaccommodate six equally spaced microphone positions 60apart located at a height of 60 in. (1.5 m) above the floor on a12 ft (3.6 m) diameter circle the center of which is the centerof the sound source. These positions shall result in a standarddeviation of the six sound pressure measurements of n
19、ot morethan 2.3 dB when measuring the reference sound source. Thislocation is suitable for the vacuum cleaner and reference soundsource for this test method. Refer to Figs. 1-4 for typicallayouts.5.3 EnvironmentalAmbient test conditions within the testroom shall be controlled to within 70 6 5F (21 6
20、 3C) and 30to 70 % relative humidity.5.4 Also, any room which has qualified in accordance withANSI S12.51/ISO 3741, ANSI S12.53/ISO 3743, and ANSIS12.57/ISO 3747 may be used to measure the sound powerlevels of vacuum cleaners.5.5 The measuredA-weighted sound pressure levels shall becorrected for the
21、 influence of background noise according toTable 1. When the steady background-noise sound pressurelevel is more than 6 dB below the sound pressure level at eachmeasurement point, the measured A-weighted sound pressurelevels shall be corrected for the influence of background noiseaccording to Table
22、1. If this difference is less than 6 dB nocorrection is allowed and any reported data must include a noteindicating that the background noise requirements of thisstandard were not satisfied.6. Instrumentation and Equipment6.1 Acoustical InstrumentationThe sound measurementsystem shall be as specifie
23、d in ANSI S1.43.6.2 Voltage Regulator SystemThe regulator shall be ca-pable of maintaining the vacuum cleaners rated voltage(61 %) and frequency (61 Hz) having a waveform that isessentially sinusoidal with 3% maximum harmonic distortionfor the duration of the test.6.3 Test Carpet and PadThe test car
24、pet and pad shall be54 in. wide (137 cm) and 72 in. (183 cm) long. The carpet shallbe multilevel. Carpet and pad shall be as specified in Specifi-cation F 655.NOTE 1For this test method two standard size 27 by 72-in. (69 by183-cm) long test carpets could be placed side by side to make it 54 by 72in.
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
本资源只提供5页预览,全部文档请下载后查看!喜欢就下载吧,查找使用更方便
5000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ASTMF13342008STANDARDTESTMETHODFORDETERMININGAWEIGHTEDSOUNDPOWERLEVELOFVACUUMCLEANERS 测定 真空 吸尘器 加重 声音

链接地址:http://www.mydoc123.com/p-534676.html