My plant facilities engineer just asked me if I knew anything about acoustic noise testing. (The answer is; very little.)
He said that he was thinking about buying some clean-room air cleaners. These are self-powered particulate filters which mount into a drop ceiling. He said that the salesman told him that the filters had a "53dBA sound level", measured 30" from the fan grill, at 90 FPM flow rate. He wanted to know if I could verify that level after installation. First, can anyone point me to any applicable light industrial sound level spec? Maybe OSHA or Cal/OSHA. Or is there some voluntary industry standard? Does what I described above sound familiar? Second, 53dBA sounds (oops) really quiet to me. A few years ago, I measured the sound level in an RF anechoic room. IIRC, I found about 55dBA. So 53dBA (from a filter/blower) must be REALLY quiet. Maybe it wouldn't be possible to prove this low a level because of ambient noise (other air handlers, transformer hum, outside traffic and fluorescent lights). Any comments? TIA, Ed -------------------------- Ed Price [email protected] Electromagnetic Compatibility Lab Cubic Defense Systems San Diego, CA. USA 619-505-2780 List-Post: [email protected] Date: 08/27/1998 Time: 15:51:51 -------------------------- --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], or [email protected] (the list administrators).
