Sonex Circular Attenuators Series

  Features

  • The Q-Tech high performance SONEX circular attenuators are the outcome of a testing and development programme in our insertion loss test facility.
  • Developed to provide high performances the SONEX range is designed for several applications.
  • Their prime use is for connecting to fans, but they are also ideal for connecting to supply air grilles or being positioned anywhere throughout a system where attenuation is necessary to remove noise generated by equipment.
  • In all situations they provide a known and dependable insertion loss, giving security to design engineers looking for quality installations in often difficult to handle situations.
Testing
  • All units have been tested in accordance with BS4718:1971 for insertion loss.
  • Air flow pressure loss data was obtained from tests conducted on a BS848 : Part 1, 1980 test rig.
  • Pressure losses are little more than those which would occur over a comparable section of straight duct.

  Construction

  • The attenuator consists of a perforated tubular liner manufactured from sheet steel.
  • The liner is enclosed by a thick layer of mineral wool sound absorbing material.
  • Casing and end plates are formed from galvanised sheet steel.
  • Select the attenuator that is the size you require and provides the attenuation necessary.
  • The model numbers shown provide the complete product specification

  Dimensions

 
Attenuation dB Frequency Hz Dimensions mm
Model SN 63 125 250 500 1k 2k 4k d D L Kg
010-030  3  3  9  17 23  26  25 100 200 300   2.5
010-060 15  34  40  40  37  100  200  600 
 010-090 10  13  21  40  45  39  36  100  200  900 
012-030  16  20  24  22  125  225  300  3.5 
012-060  13  29  35 36  32  125  225  600  4.5 
012-090  10  12  19  37  40 38  34  125  225  900 
015-030  13  19  23  22  150  260  300 
015-060  12  24  30  35  31  150  260  600 
 015-090 10  15  32  38  37  34  150  260  900 
020-060  10  20  27  33  19  200  300  600  7.5 
020-090  14  28  32  35  28  200  300  900  11 
020-120  10  12  17  36  41  43  28  200  300  1165  14 
025-060  10  19  25  29  18  250  355  600  10 
025-090  12  23  30  30  22  250  355  900  14.5 
025-120  10  15  32  37  38  26  250  355  1165  18 
031-060  15  20  22  17  315  400  600  13 
031-090  10  20  30  29  18  315  400  900  17.5 
031-120  13  22  32  33  19  315  400  1165  21 
036-060  14  20  17  14  355  455  600  19 
036-090  11  19  29  23  18  355  455  900  34 
036-120  14  24  33  27  20  355  455  1165  43 
040-090  19  26  20  13  400 606  900  38 
040-120  14  24  30  28  17  400  606  1165  50 
050-090  15  23  17  12  500  711  900  43 
050-120  13  18  26  23  15  500  711  1165  60 

  Auto Cad

   
SN 010 SN 012 SN 015 SN 020
Download AUTO CAD file Download AUTO CAD file Download AUTO CAD file Download AUTO CAD file
       
SN 025 SN 031 SN 036 SN 040
Download AUTO CAD file Download AUTO CAD file Download AUTO CAD file Download AUTO CAD file
SN 050  

  PDF

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