ASTM F1334-2011 Standard Test Method for Determining A-Weighted Sound Power Level of Vacuum Cleaners《测定真空吸尘器A加权声功率级的标准试验方法》.pdf
《ASTM F1334-2011 Standard Test Method for Determining A-Weighted Sound Power Level of Vacuum Cleaners《测定真空吸尘器A加权声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 F1334-2011 Standard Test Method for Determining A-Weighted Sound Power Level of Vacuum Cleaners《测定真空吸尘器A加权声功率级的标准试验方法》.pdf(9页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: F1334 11An American National StandardStandard Test Method forDetermining A-Weighted Sound Power Level of VacuumCleaners1This standard is issued under the fixed designation F1334; the number immediately following the designation indicates the year oforiginal adoption or, in the case of r
2、evision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () 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 upr
3、ight, 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 F2544.1.2 A-weighted sound pressure measur
4、ements 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 approximate
5、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 in pa
6、rentheses 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 limita
7、tions prior to use.2. Referenced Documents2.1 ASTM Standards:2C634 Terminology Relating to Building and EnvironmentalAcousticsE177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodF608
8、Test Method for Evaluation of Carpet Embedded DirtRemoval Effectiveness of Household/Commercial VacuumCleanersF655 Specification for Test Carpets and Pads for VacuumCleaner TestingF2544 Test Method for Determining A-Weighted SoundPower Level of Central Vacuum Power UnitsF2607 Test Method for Measuri
9、ng the Hard Surface Floor-Cleaning Ability of Household/Commercial VacuumCleaners2.2 ANSI Standards: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 s
10、ources using sound pressure -Precision methods for reverberation roomsANSI S12.53/ISO 3743 Acoustics - Determination of soundpower levels of noise sources - Engineering methods forsmall, movable sources in reverberant fieldsANSI S12.57/ISO 3747 StandardAcoustics - Determinationof sound power levels
11、of noise sources using soundpressure - Comparison method in situ3. Terminology3.1 Definitions:3.1.1 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 p
12、opulation.3.1.3 reference sound source, na standard source ofbroadband sound with a certified set 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
13、 both, being tested.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 Nov. 1, 2011. Published December 2011. Originallyapproved in 1991. Last previous edition approve
14、d in 2008 as F1334 08. DOI:10.1520/F1334-11.2For 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 A
15、merican National Standards Institute, 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.3.1.6 Unless otherwise indicated, definitions are in accor-dance with Terminology C634.4. Significanc
16、e and Use4.1 The test results enable the comparison of A-weightedsound emission from vacuum cleaners when tested under thecondition 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 requireme
17、ntsof 5.2 can be met. It should be large enough to meet thedimension requirements of 5.2.5.1.1 When a central vacuum cleaner 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-wa
18、ll PVC tubing. Asingle wall inlet shall be located in the test room.5.2 Identify a location on the test room floor which 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 c
19、enterof the sound source. These positions shall result in a standarddeviation of the six sound pressure measurements of not 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 fo
20、r typicallayouts.5.3 EnvironmentalAmbient test conditions within the testroom shall be controlled to within 70 6 5F (21 6 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 me
21、asure the sound powerlevels of vacuum cleaners or motorized nozzles.5.5 The measuredA-weighted sound pressure levels shall becorrected for the 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 e
22、achmeasurement point, the measured A-weighted sound pressurelevels shall be corrected for the influence of background noiseaccording to Table 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
23、thisstandard were not satisfied.6. Instrumentation and Equipment6.1 Acoustical InstrumentationThe sound measurementsystem shall be as specified 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) havin
24、g a waveform that isessentially sinusoidal with 3% maximum harmonic distortionfor the duration of the test.6.3 Test Carpet and PadThe test carpet 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 F655.
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