1 Scope
This Standard specifies noise measurement techniques of Α-weighted sound level and sound pressure level as well as those of sound power level.
This Standard applies to the noise measurement of general type fan, turbo-blower, turbine compressor (hereafter referred to as fan) and d Roots blower.
2. Normative References
The following standards contain provisions which, through reference in this Standard, constitute provisions of this Standard. For dated references, subsequent amendments to (excluding corrigendum), or revisions of, any of these publications do not apply. However, all parties coming to agreements based on this Standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest editions of the normative references apply.
GB/T 1236 Industrial fans - performance testing using standardized airways ( GB/T 1236-2000, idt ISO 5801:1997)
GB/T 3947 Acoustical terminology
GB/T 10178 Industrial fans - performance testing in situ(GB/T 10178-2006, ISO 5802：2001, IDT)
JB/T 3165 Thermodynamic performance test for centrifugal & axial blower and compressor
JB/T 8690 Industrial fans - noise limited value
JB/T 8941.2 Roots type blower for general purpose - Part 2：Performance test methods
Foreword
1 Scope
2. Normative References
3. Terms, Symbols and Units
4. Measuring Item
5. Measuring Conditions
6. Measuring Apparatus, Equipment, Bench and their Requirements
7. Measuring Device
8. Measuring Procedure
9. Measuring Method
10. Measurement Data Arrangement
11. Measurement Report
Appendix A (Informative) Sound Power Level Measurement - Free Sound Field Method
Appendix B (Informative) Adjacent Sound Field Method to Measure Sound Power Level
