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ASTM E3091-17

(Specification)

Standard Specification for Systems to Measure Sound Levels

Standard Specification for Systems to Measure Sound Levels

ABSTRACT
This specification covers measurement systems used in making sound pressure level measurements in buildings in accordance with ASTM standards and guides. The measurement system includes all the components necessary to indicate measured sound pressure levels, such as microphones, preamplifiers, cables, processing units, filters, computers, display units, and other peripheral devices. Where the system is composed of components, specifications are given for microphone type and orientation, filters and windscreens. This specification does not cover systems for making sound pressure level measurements in other environments, but may include these environments in the future. Performance criteria required for measurement of sound pressure levels in building acoustics are addressed in this specification, along with the requirements for measurements systems which are not designed to conform to a normative sound level meter performance standard.
SCOPE
1.1 This specification is for measurement systems used in making sound pressure level measurements in buildings in accordance with ASTM standards and guides. Systems for making sound pressure level measurements in other environments are not addressed in this specification. A future expansion of this specification may include these environments. The systems addressed include one or more microphones and associated components to process the output of the microphone measurement system conforms to a sound level meter specification it is sufficient to specify the category of precision and accuracy required by the measurement system and that direction is given in the user manual for proper use. Where the system is composed of components, specifications are given for microphone type and orientation, filters and windscreens.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 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.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

Status
Published
Publication Date
30-Jun-2017
ICS
17.140.50 - Electroacoustics
91.120.20 - Acoustics in building. Sound insulation
Technical Committee
E33 - Building and Environmental Acoustics
Drafting Committee
E33.05 - Research
Current Stage
Ref Project

Relations

Refers
ASTM E2964-14 - Standard Test Method for Measurement of the Normalized Insertion Loss of Doors
Effective Date
01-Jun-2014
Refers
ASTM E90-09(2016) - Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements
Effective Date
01-Dec-2016
Referred By
ASTM E2964-21 - Standard Test Method for Measurement of the Normalized Insertion Loss of Doors
Effective Date
01-Jul-2017
Referred By
ASTM E336-23 - Standard Test Method for Measurement of Airborne Sound Attenuation between Rooms in Buildings
Effective Date
01-Jul-2017
Referred By
ASTM E1414/E1414M-21a - Standard Test Method for Airborne Sound Attenuation Between Rooms Sharing a Common Ceiling Plenum
Effective Date
01-Jul-2017
Referred By
ASTM C634-22 - Standard Terminology Relating to Building and Environmental Acoustics
Effective Date
01-Jul-2017

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ASTM E3091-17 - Standard Specification for Systems to Measure Sound LevelsASTM E3091-17 - Standard Specification for Systems to Measure Sound Levels
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ASTM E3091-17 - Standard Specification for Systems to Measure Sound Levels
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: E3091 −17
Standard Specification for
1
Systems to Measure Sound Levels
This standard is issued under the fixed designation E3091; 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 C634 Terminology Relating to Building and Environmental
Acoustics
1.1 This specification is for measurement systems used in
E90 Test Method for Laboratory Measurement of Airborne
making sound pressure level measurements in buildings in
Sound Transmission Loss of Building Partitions and
accordance with ASTM standards and guides. Systems for
Elements
making sound pressure level measurements in other environ-
E492 Test Method for Laboratory Measurement of Impact
ments are not addressed in this specification. A future expan-
Sound Transmission Through Floor-Ceiling Assemblies
sion of this specification may include these environments. The
Using the Tapping Machine
systems addressed include one or more microphones and
E1111 Test Method for Measuring the InterzoneAttenuation
associatedcomponentstoprocesstheoutputofthemicrophone
of Open Office Components
measurement system conforms to a sound level meter specifi-
E1130 Test Method for Objective Measurement of Speech
cation it is sufficient to specify the category of precision and
accuracy required by the measurement system and that direc- Privacy in Open Plan Spaces Using Articulation Index
E2964 Test Method for Measurement of the Normalized
tion is given in the user manual for proper use. Where the
system is composed of components, specifications are given Insertion Loss of Doors
for microphone type and orientation, filters and windscreens. 3,4
2.2 Other Standards:
1.2 The values stated in SI units are to be regarded as
ANSI S1.4-2014/Part 1/IEC 61672-1: 2013 Electroacoustics
standard. No other units of measurement are included in this - Sound level meters – Part 1: Specifications
standard.
ANSI S1.4-2014/Part 3/IEC 61672-3: 2013 Electroacoustics
– Sound level meters – Part 3: Periodic tests
1.3 This standard does not purport to address all of the
IEC 61094-4: 1995 Electroacoustics - Measurement Micro-
safety concerns, if any, associated with its use. It is the
phones – Specifications for working standard micro-
responsibility of the user of this standard to establish appro-
phones
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. ANSI/ASA S1.11-2014/Part 1/IEC 61260-1: 2014 Electroa-
1.4 This international standard was developed in accor- coustics-Octave-bandandfractional-octave-bandfilters–
dance with internationally recognized principles on standard-
Part 1: Specifications
ization established in the Decision on Principles for the ANSI S1.40-2006 Specifications and Procedures for Sound
Development of International Standards, Guides and Recom-
Calibrators
mendations issued by the World Trade Organization Technical
IEC 60942:2003 Electroacoustics –Sound calibrators
Barriers to Trade (TBT) Committee.
ANSI S1.17/Part 1-2004 Microphone Windscreens – Part 1:
Measurements and Specifications of Insertion Loss in Still
2. Referenced Documents
Air or Slightly Moving Air
2
2.1 ASTM Standards:
NOTE 1—ANSI S1.4-2014/Part 1 and Part 3 are nationally adopted
C423 Test Method for SoundAbsorption and SoundAbsorp-
standardsmirroringIEC61672-1:2013andIEC61672-3:2013.Therefore
tion Coefficients by the Reverberation Room Method
only the IEC 61672 standards will be referenced in the rest of this
standard. ANSI/ASA S1.11-2014/Part 1 is a nationally adopted standard
mirroring IEC 61260-1:2014. Therefore only the IEC 61260-1 will be
referenced in the rest of this standard.
1
This specification is under the jurisdiction of ASTM Committee E33 on
Building and Environmental Acoustics and is the direct responsibility of Subcom-
mittee E33.05 on Research.
Current edition approved July 1, 2017. Published July 2017. DOI: 10.1520/
3
E3091-17. Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 4th Floor, New York, NY 10036, http://www.ansi.org.
4
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from International Electrotechnical Commission (IEC), 3, rue de
Standards volume information, refer to the standard’s Document Summary page on Varembé, 1st Floor, P.O. Box 131, CH-1211, Geneva 20, Switzerland, http://
the ASTM website. www.iec.ch.
Copyright © ASTM Inter
...

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Standard Test Method for Airborne Asbestos Concentration in Ambient and Indoor Atmospheres as Determined by Transmission Electron Microscopy Direct Transfer (TEM)

SIGNIFICANCE AND USE
5.1 This test method is applicable to the measurement of airborne asbestos in a wide range of ambient air situations and for detailed evaluation of any atmosphere for asbestos structures. Most fibers in ambient atmospheres are not asbestos, and therefore, there is a requirement for fibers to be identified. Most of the airborne asbestos fibers in ambient atmospheres have diameters below the resolution limit of the light microscope. This test method is based on transmission electron microscopy, which has adequate resolution to allow detection of small thin fibers and is currently the only technique capable of unequivocal identification of the majority of individual fibers of asbestos. Asbestos is often found, not as single fibers, but as very complex, aggregated structures, which may or may not also be aggregated with other particles. The fibers found suspended in an ambient atmosphere can often be identified unequivocally if sufficient measurement effort is expended. However, if each fiber were to be identified in this way, the analysis would become prohibitively expensive. Because of instrumental deficiencies or because of the nature of the particulate matter, some fibers cannot be positively identified as asbestos even though the measurements all indicate that they could be asbestos. Therefore, subjective factors contribute to this measurement, and consequently, a very precise definition of the procedure for identification and enumeration of asbestos fibers is required. The method defined in this test method is designed to provide a description of the nature, numerical concentration, and sizes of asbestos-containing particles found in an air sample. The test method is necessarily complex because the structures observed are frequently very complex. The method of data recording specified in the test method is designed to allow reevaluation of the structure-counting data as new applications for measurements are developed. All of the feasible specimen preparation techn...
SCOPE
1.1 This test method2 is an analytical procedure using transmission electron microscopy (TEM) for the determination of the concentration of asbestos structures in ambient atmospheres and includes measurement of the dimension of structures and of the asbestos fibers found in the structures from which aspect ratios are calculated.  
1.1.1 This test method allows determination of the type(s) of asbestos fibers present.  
1.1.2 This test method cannot always discriminate between individual fibers of the asbestos and non-asbestos analogues of the same amphibole mineral.  
1.2 This test method is suitable for determination of asbestos in both ambient (outdoor) and building atmospheres.  
1.2.1 This test method is defined for polycarbonate capillary-pore filters or cellulose ester (either mixed esters of cellulose or cellulose nitrate) filters through which a known volume of air has been drawn and for blank filters.  
1.3 The upper range of concentrations that can be determined by this test method is 7000 s/mm2. The air concentration represented by this value is a function of the volume of air sampled.  
1.3.1 There is no lower limit to the dimensions of asbestos fibers that can be detected. In practice, microscopists vary in their ability to detect very small asbestos fibers. Therefore, a minimum length of 0.5 μm has been defined as the shortest fiber to be incorporated in the reported results.  
1.4 The direct analytical method cannot be used if the general particulate matter loading of the sample collection filter as analyzed exceeds approximately 10 % coverage of the collection filter by particulate matter.  
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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 appropri...

  • Standard
    33 pages
    English language
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  • Standard
    33 pages
    English language
    sale 15% off