Circular attenuator suitable for direct connection to cased axial fans.
Construction comprises galvanised steel outer casing, end rings fitted with tapped inserts to suit the relevant fan drilling detail. Inner bore is manufactured from perforated galvanised steel spiral tube retaining a 45 kg /m³ density acoustic media with a surface particulate membrane. Fitted with a centrally mounted cylindrical acoustic pod with aerodynamic end domes.
Frequency Hz 63 125 250 500 1K 2K 4K 8K
Insertion Loss dBW 3 5 8 16 17 17 17 10