ASTM F2544-11
(Test Method)Standard Test Method for Determining A-Weighted Sound Power Level of Central Vacuum Power Units
Standard Test Method for Determining A-Weighted Sound Power Level of Central Vacuum Power Units
SIGNIFICANCE AND USE
The test results enable the comparison of A-weighted sound emission from central vacuum power units when tested under the condition of this test method.
SCOPE
1.1 This test method calculates the overall A-weighted sound power level emitted by central vacuum power units, intended for operation in domestic applications. This standard applies to the power unit only at the power unit location. To test the sound power level of a central vacuum at the users location, refer to Test Method F 1334.
1.2 A-weighted sound pressure measurements are performed on a mounted central vacuum power unit in a semi-reverberant room. This test method determines sound power by a comparison method for small noise sources, that is, comparison to a broad band reference sound source.
1.3 This test method describes a procedure for determining the A-weighted sound power level of small noise sources. This test method uses a non-special semi-reverberant room.
1.4 Results are expressed as A-weighted sound power level in decibels (referenced to 1 pW).
1.5 The values stated in inch pound units are to be regarded as the standard. The values in parentheses are for information only.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: F2544 − 11 An American National Standard
Standard Test Method for
Determining A-Weighted Sound Power Level of Central
1
Vacuum Power Units
This standard is issued under the fixed designation F2544; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to
1.1 This test method calculates the overall A-weighted
Determine the Precision of a Test Method
sound power level emitted by central vacuum power units,
F820 Test Method for Measuring Air Performance Charac-
intended for operation in domestic applications. This standard
teristics of Central Vacuum Cleaning Systems
appliestothepowerunitonlyatthepowerunitlocation.Totest
F1334 Test Method for Determining A-Weighted Sound
the sound power level of a central vacuum at the user’s
Power Level of Vacuum Cleaners
location, refer to Test Method F1334.
3
2.2 ANSI Standards:
1.2 A-weighted sound pressure measurements are per-
S1.10 Method for the Calibration of Microphones
formed on a mounted central vacuum power unit in a semi-
S1.26 Method for the Calculation of the Absorption of
reverberantroom.Thistestmethoddeterminessoundpowerby
Sound by the Atmosphere
a comparison method for small noise sources, that is, compari-
S1.43 Specifications for Sound Level Meters, IEC 804 and
son to a broad band reference sound source.
IEC 61672
S12.31 Precision Methods for the Determination of Sound
1.3 This test method describes a procedure for determining
theA-weighted sound power level of small noise sources. This Power Levels of Broad Band Noise Sources in Reverber-
ant Rooms
test method uses a non-special semi-reverberant room.
S12.32 Precision Methods for Determination of Sound
1.4 Results are expressed as A-weighted sound power level
Power Levels for Discrete Frequency and Narrow Band
in decibels (referenced to 1 pW).
Noise Sources in Reverberant Rooms
1.5 The values stated in inch pound units are to be regarded
S12.33 Engineering Methods for Determination of Sound
as the standard. The values in parentheses are for information
Power Levels of Noise Sources in a Special Reverberant
only.
Test Room
3
1.6 This standard does not purport to address all of the
2.3 ISO Standards:
safety concerns, if any, associated with its use. It is the
ISO 3741, 3742, and 3743 are similar to and may be used in
responsibility of the user of this standard to establish appro-
place of ANSI S12.31, S12.32, and S12.33 respectively
3
priate safety and health practices and determine the applica-
2.4 IEC Standard:
bility of regulatory limitations prior to use.
60704.1 TestCodefortheDeterminationofAirborneAcous-
tical Noise Emitted by Household and Similar Electrical
2. Referenced Documents
Appliances
2
2.1 ASTM Standards:
3. Terminology
C634 Terminology Relating to Building and Environmental
Acoustics 3.1 Unless otherwise indicated, definitions are in accor-
E177 Practice for Use of the Terms Precision and Bias in dance with Terminology C634.
3.2 Definitions:
3.2.1 population, n—total of all of the units of the particular
1
This test method is under the jurisdiction ofASTM Committee F11 on Vacuum
model or type, or both, of central vacuum power units being
Cleaners and is the direct responsibility of Subcommittee F11.25 on Sound
Measurement. tested.
Current edition approved Nov. 1, 2011. Published December 2011. Originally
ε1 3.2.2 population sample or sample, n—three or more units,
approved in 2006. Last previous edition approved in 2006 as F2544 – 06 . DOI:
randomly taken from the population.
10.1520/F2544-11.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
the ASTM website. 4th Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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F2544 − 11
FIG. 1 Sound Test Layout
3.2.3 reference sound source, n—standard source of broad- the test room. The power unit is to be mounted on the wall per
band sound with a certified set of sound power emissions. the manufacturer’s recommendations.
3.2.4 source, n—device that emits sound.
5.2 Three microphone positions are to be used. The micro-
phone positions are to be on a semi-circle with a 6-ft radius
3.2.5 test unit or units, n—single central vacuum power unit
centered at the soun
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
An American National Standard
´1
Designation:F2544–06 Designation:F2544–11
Standard Test Method for
Determining A-Weighted Sound Power Level of Central
1
Vacuum Power Units
This standard is issued under the fixed designation F2544; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1
´ NOTE—1.4 and the Section 10 heading were editorially corrected in December 2006.
1. Scope
1.1 This test method calculates the overallA-weighted sound power level emitted by central vacuum power units, intended for
operation in domestic applications.This standard applies to the power unit only at the power unit location.To test the sound power
level of a central vacuum at the user’s location, refer to Test Method F1334.
1.2 A-weighted sound pressure measurements are performed on a mounted central vacuum power unit in a semi-reverberant
room. This test method determines sound power by a comparison method for small noise sources, that is, comparison to a broad
band reference sound source.
1.3 This test method describes a procedure for determining theA-weighted sound power level of small noise sources. This test
method uses a non-special semi-reverberant room.
1.4Results1.4 Results are expressed as A-weighted sound power level in decibels (referenced to 1 pW).
1.5 The values stated in inch pound units are to be regarded as the standard. The values in parentheses are for information only.
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
C634 Terminology Relating to Building and Environmental Acoustics
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
F820 Test Method for Measuring Air Performance Characteristics of Central Vacuum Cleaning Systems
F1334 Test Method for Determining A-Weighted Sound Power Level of Vacuum Cleaners
3
2.2 ANSI Standards:
S1.10 Method for the Calibration of Microphones
S1.26 Method for the Calculation of the Absorption of Sound by the Atmosphere
S1.43 Specifications for Sound Level Meters, IEC 804 and IEC 61672
S12.31 Precision Methods for the Determination of Sound Power Levels of Broad Band Noise Sources in Reverberant Rooms
S12.32 Precision Methods for Determination of Sound Power Levels for Discrete Frequency and Narrow Band Noise Sources
in Reverberant Rooms
S12.33 Engineering Methods for Determination of Sound Power Levels of Noise Sources in a Special Reverberant Test Room
3
2.3 ISO Standards:
ISO 3741, 3742, and 3743 are similar to and may be used in place of ANSI S12.31, S12.32, and S12.33 respectively
3
2.4 IEC Standard:
60704.1 TestCodefortheDeterminationofAirborneAcousticalNoiseEmittedbyHouseholdandSimilarElectricalAppliances
1
This test method is under the jurisdiction ofASTM Committee F11 onVacuum Cleaners and is the direct responsibility of Subcommittee F11.25 on Sound Measurement.
Current edition approved July 1, 2006. Published July 2006. DOI: 10.1520/F2544-06E01.
´1
Current edition approved Nov. 1, 2011. Published December 2011. Originally approved in 2006. Last previous edition approved in 2006 as F2544 – 06 . DOI:
10.1520/F2544-11.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
F2544–11
3. Terminology
3.1 Unless otherwise indicated, definitions are in accordance with Terminology C634.
3.2 Definitions:
3.2.1 population, n—total of all of the units of the particular model or type, or both, of central vacuum power units being tested.
3.2.2 population sample or sample, n—three or more units, randomly taken from the population.
3.2.3 referen
...
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