JJF 1228-2009 (English Version) PDF

Standard No.: JJF 1228-2009
Language: Chinese, Available in English version
Release Date: 2009
Published By: National Metrological Technical Specifications of the People's Republic of China
Latest: JJF 1228-2009

Scope: This specification applies to the calibration of sound power meters converted into sound power levels by surface sound pressure level on a known measuring surface and measuring surface area.

JJF 1228-2009 Referenced Document

GB/T 3102.7-1993 Quantities and units of acoustics
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 6882-2008 Acoustics.Determination of sound power levels of noise sources using pressure.Precision methods for anechoic and hemi-anechoic rooms
JJF 1001-1998 General Terms in Metrology and Their Definitions
JJF 1034-2005 Metrological Terms and their Definitions for Acoustics
JJF 1059-1999 Evaluation and Expression of Uncertainty in Measurement
JJG 176-2005 Sound Calibrators
JJG 188-2002 Verification Regulation of Sound Level Meters*， 2024-04-19 Update
JJG 449-2001 Verification Regulation of Octave-Band and One-Third-Octave Band Filters

2009 JJF 1228-2009 Calibration Specification for Sound Powder Meters
1970 JJF 1228-1990 30~120 cubic meters / hour gas flow benchmark operating technical specifications