- Standard No.
- GB/T 4980-2003
- Language
- Chinese, Available in English version
- Release Date
- 2003
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Latest
-
GB/T 4980-2003
- Replace
-
GB/T 7022-1986
GB/T 4980-1985
- Scope
- This standard specifies the measurement method for the noise of positive displacement compressors. The text of this standard mainly specifies the engineering method for measuring noise sound power level. Appendix A gives a simple method for measuring noise sound power level, and Appendix B gives a method for measuring noise sound pressure level. This standard applies to volumetric compressor units including the driving machine (hereinafter referred to as compressor units).
GB/T 4980-2003 history
- 2003 GB/T 4980-2003 Determination of sound level for noise emitted by displacement compressors
- 1985 GB/T 4980-1985 Determination of sound power level for noise emitted by displacement compressors--Engineering method
GB/T 4980-2003 Determination of sound level for noise emitted by displacement compressors has been changed from GB/T 7022-1986 Determination of sound power lever for noise emitted by displacement compressors--Survey method.