Detailed test standards have been written for many types of equipment. These should be used whenever possible because of the considerable forethought related to testing and operational conditions that has been invested in the them. If you don’t find the type of equipment you are purchasing listed below, use the Elementary Equipment Sound-Level Verification Test document (264 KB).
Note: If you find that this document is the most appropriate test standard for your purchase, you will need to include a link to it (or a copy of it) with your equipment specification.
Note: If the test standard you select does not provide for measurements at all locations of interest (e.g., operator position), you may wish to require additional measurement locations when you build your specification.
Sound Descriptors Used in the Table
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LP
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sound pressure level in octave bands
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LPA
-
A-weighted sound pressure level
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LW
-
sound power level in octave bands
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LWA
-
A-weighted sound power level
Note: NASA employees should consult their Center’s library staff for instructions on ordering technical standards covered by agency subscriptions.
Equipment Type and Test Standard | Quantitites Measured |
Air Moving Devices | |
---|---|
AMCA 300-85 ,”Test Code for Sound Rating” | LW, LWA |
ANSI/ASA S12.11-2003/Part 1 / ISO 10302:1996 (MOD) (R2008) American National Standard Acoustics – Measurement of noise and vibration of small air-moving devices, Part 1: Airborne noise emission | LW, LWA |
Hydraulic Fluid Power Pumps | |
ANSI/B93.71M-1986, “Hydraulic fluid power pumps—test code for the determination of airborne noise levels” | LPA, LWA |
Hydraulic Fluid Power Motors | |
ANSI/B93.72M-1986, “Hydraulic fluid power motors – test code for the determination of airborne noise levels” | LPA, LWA |
Pneumatic Equipment | |
ANSI S5.1, “Test Code for the Measurement of Sound from Pneumatic Equipment” | LPA |
Electric Power Tools | |
ANSI S12.15-1992, “Portable electric power tools, stationary and fixed electric power tools, and gardening appliances—measurement of sound emitted” | LPA, LWA |
Gears | |
ANSI/AGMA 6025-C90 (August 1990), “Sound for enclosed helical, herringbone, and spiral bevel gear drives” | LPA, LWA |
Mechanical Equipment | |
ANSI/ASME PT36-1985, “Measurement of Industrial Sound” | LPA, LWA |
Electric Motors | |
IEEE Publication No. 85, “Test Procedure for Airborne Noise Measurements on Rotating Electric Machinery”
Note: State of the art may be <80 dBA. |
LPA, LWA |
Liquid Immersed Transformers | |
ANSI/IEEE C57.12.90 1980, “Test Code for Liquid Immersed, Distribution, Power and Regulating Transformers” | LPA |
Other Transformers | |
ANSI/IEEE C57.94-1982, “IEEE Recommnded Practice for operation of dry-type general purpose distribution and power transformers” | LPA |
Control Valves | |
ANSI/ISA S57.07-1987, “Laboratory Measurement of Aerodynamic Noise Generation by Control Valves” | LPA |
Air Conditioning Equipment | |
ARI 575-1987, “Method of Measuring Machinery Sound within an Equipment Space” | LPA, LWA |
Stationary Heavy Duty Internal Combustion Engines | |
DEMA Test Code for the measurement of sound from heavy-duty reciprocating engines (1985) | LPA |
Machine Tools | |
NMTBA Noise Measurement Techniques | LPA, LWA |
Gas Turbine | |
ANSI B133.8 Gas turbine installation sound emissions | LPA, LWA |
Industrial Trucks | |
ANSI/ASME B56.11.5, “Measurement of sound emitted by low lift, high lift and rough terrain powered industrial trucks” | LPA |
Cooling Towers | |
CTI code for measurement of sound from water-cooling towers | LP,LPA, LWA |
Off-road Equipment | |
SAE J1166 (R) Sound Measurement – Off-Road Self-Propelled Work Machines, Operator – Work Cycle | LPA |
SAE J88 (R) Sound Measurement – Off-Road Work Machines – Exterior | LPA |
ISO 6393 Earth-moving machinery – Determination of sound power level – stationary test condition | LWA |
ISO 6394 Earth-moving machinery – Determination of emission sound pressure level at operator’s position – Stationary test conditions | LPA |
ISO 6395 Earth-moving machinery – Determination of sound power level – Dynamic test conditions | LWA |
ISO 6396 Earth-moving machinery – Determination of emission sound pressure level at operator’s position – Dynamic test conditions | LPA |
Ducted Air Moving and Conditioning Equipment | |
ARI Standard 260 | LW, LWA |
Information Technology Equipment | |
ANSI/ASA S12.10-2002/ISO 7779:1999 (R2007) NAIS Standard Acoustics – Measurement of airborne noise emitted by information technology and telecommunications equipment |
LP, LPA,LW, LWA |