GB/T 21271-2026 Active National standards

GB/T 21271-2026 Vacuum technology—Noise measurement for vacuum pumps

GB/T 21271-2026 Vacuum technology—Noise measurement for vacuum pumps

Publish Date: 2026-01-28 Implement Date: 2026-05-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us
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Basic Information

Standard Code: GB/T 21271-2026
Standard Type: National standards
Standard Status: Active
is_force_gb: no
CCS Name: Vacuum technology and equipment
ICS Name: Vacuum technology
Publish Date: 2026-01-28
Implement Date: 2026-05-01
Pages: 36 pages

Scope

This document describes the measurement methods for the emission noise of vacuum pumps and their components, which mainly include the following two items:
—— Sound power level under load conditions;
—— Sound pressure level emitted at the working position under load conditions.
This document specifies the acoustic environment, measurement instruments, installation of vacuum pumps and their components, load and operating conditions, test reports, and requirements for marking and verifying noise emission values during the measurement of noise from vacuum pumps and their components.
This document is applicable to the noise measurement of mechanical vacuum pumps and their components (hereinafter referred to as pumps). This document does not describe the analysis of the harmonic band, but it is also applicable when it is related to it.

Development Information

Word Count: 52 Thousand words Pages: 36 pages

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Referenced Standards

GB/T 3241-1998 Octave-band and fractional-octave-band filters GB/T 3241-2010 Electroacoustics—Octave-band and fractional-octave-band filters GB/T 3241.1-2025 Electroacoustics—Octave-band and fractional-octave-band filters—Part 1:Specifications GB/T 3241.2-2025 Electroacoustics—Octave-band and fractional-octave-band filters—Part 2:Pattern evaluation tests GB/T 3785.1-2023 Electroacoustics—Sound level meters—Part 1:Specifications GB/T 4129-2003 Acoustics—Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels GB/T 4129-2025 Acoustics—Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels GB/T 14574-2000 Acoustics—Declaration and verification of noise emission values of machinery and equipment GB/T 17248.2-1999 Acoustics—Noise emitted by machinery and equipment—Measurement of emission sound pressure levels at a work station and at other specified positions—Engineering method in an essentially free field over a reflecting plane GB/T 17248.2-2018 Acoustics—Noise emitted by machinery and equipment—Determination of emission sound pressure levels at a work station and at other specified positions in an essentially free field over a reflecting plane with negligible environmental corrections GB/T 17248.3-1999 Acoustics—Noise emitted by machinery and equipment—Measurement of emission sound pressure levels at a work station and at other specified positions—Survey method in situ GB/T 17248.3-2018 Acoustics—Noise emitted by machinery and equipment—Determination of emission sound pressure levels at a work station and at other specified positions applying approximate environmental corrections ISO 11203/Amd 1

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