JB/T 6972-1993
Measurement method for microporous exhaust muffler (English Version)
- Standard No.
- JB/T 6972-1993
- Language
- Chinese, Available in English version
- Release Date
- 1993
- Published By
- Professional Standard - Machinery
- Latest
- JB/T 6972-1993
- Scope
- This standard specifies methods for measuring the performance of microporous exhaust mufflers in anechoic chambers, reverberation chambers, and work sites. The measurement parameters specified in this standard are mainly the A and C weighted insertion loss and gas flow loss rate of the microporous exhaust muffler. This standard applies to small microporous mufflers made of powder metallurgy, ceramics, plastics or other materials (generally limited to axis length L≤0.25m). This standard does not apply to the measurement of silencing performance of duct exhaust mufflers.
JB/T 6972-1993 history
- 1993 JB/T 6972-1993 Measurement method for microporous exhaust muffler
