GB/T 21271-2007 (English Version) PDF

Standard No.: GB/T 21271-2007
Language: Chinese, Available in English version
Release Date: 2007
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 21271-2007

Scope: This standard stipulates the measurement method and labeling of the emission noise of vacuum pumps, specifies the installation, load and working conditions during measurement, and specifies the following two measurement and expression methods of emission noise: - specifies the sound power level under load conditions; - Specifies the sound pressure level emitted at the work position under load conditions. This standard applies to the noise measurement of mechanical vacuum pumps (hereinafter referred to as pumps).

GB/T 21271-2007 Referenced Document

GB 3102.7-1993 Quantities and units of acoustics
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 17248.3-1999 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 17248.4-1998 Acoustics--Noise emitted by machinery and equipment-- Determination of emission sound pressure level at a workstation and at other specified position from the sound power level
GB/T 3241-1998 Octave-band and fractional-octave-band filters
GB/T 3767-1996 Acoustics--Determination of sound power levels of noise sources using sound pressure--Engineering method in an essentially free field over a reflecting plane
GB/T 3947-1996 Acoustical terminology
GB/T 4129-2003 Acoustics-Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels
IEC 61672-1:2002 Electroacoustics - Sound level meters - Part 1: Specifications