Air Movement and Control Association (AMCA) International Inc. announces the publication of ANSI/AMCA Standard 320-23, Laboratory Method of Sound Testing of Fans Using Sound Intensity.
Superseding ANSI/AMCA Standard 320-08 (R2013), ANSI/AMCA Standard 320-23 contains extensive updates to reflect modern instrumentation and procedures and to clarify requirements that previously were subject to interpretation. Attempts were made to align the standard, to the extent practical and relevant, with AHRI 230, Sound Intensity Testing Procedures for Determining Sound Power of HVAC Equipment.
Notable changes to ANSI/AMCA Standard 320 include:
- Removal of reference sound-source adjustment, which was partially replaced with high-frequency correction (Section 5.7 and Annex E) and Annex F, Correction to Standard Meteorological Conditions.
- Clarification of the performance-verification section (5.8).
- Introduction of the concept of dynamic capability.
- Clarification and expansion of the definition of test surface for each fan type.
- The requirement that measurements and calculations be done in the one-third octave band and then summed to full octave bands for reporting purposes.
The cost of ANSI/AMCA Standard 320-23 is $90 in printed or PDF format and $122 in both printed and PDF formats. To purchase a copy, click here.
For more information about ANSI/AMCA Standard 320-23, contact Director of Publications and Standards Joe Brooks, PE, at jbrooks@amca.org or Senior Manager, Publications and Standards Shruti Kohli-Bhargava at shrutik@amca.org.
