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SR-1120-1D


The silencer is used for attenuation of the operation noise generated by ventilation equipment and spreaded in the air ducts.

  • Description
  • Characteristics
  • Downloads
  • Dimensions
  • Noise level reduction
Description
Description
PURPOSE DESIGN
  • The silencer is used for attenuation of the operation noise generated by ventilation equipment and spreaded in the air ducts.
  • Designed for connection to round air ducts.
  • The SR silencer has a polymer-coated steel casing filled with noncombustible material that has a protective coating to prevent fiber deformation. 
Characteristics
Characteristics
Parameter SR-1120-1D
Measurement unit
Casing material polymer coated steel -
Mass 70.2 kg
Files archieve
Downloads
Name
Brochure "VPVO and VDO fan accessories" (pdf 2.92Mb)
Download high quality image "SR" (psd 837.53Kb)
Download image "SR" for your website (png 210.63Kb)
Dimensions
Characteristics
SR-1120-1D
Parameter Value Measurement unit
∅D 1120 mm
∅D1 1190 mm
∅D2 1273 mm
L 1122 mm
Md M12 mm
n 20 -
Noise level reduction
Noise level reduction
  • The values shown in the tables represent the difference between the sound power level (Lw) of the combination of the fan, the attenuator and the power of one fan.
  • To determine the sound power level of the fan equipped with a silencer, the insertion loss must be subtracted from the rated sound power level (Lw) of the fan on the mid-frequency spectrum in the octave band given in the fan specifications.
Model Sound attenuation by frequency band [dB] LwA [dBA]
Sound-power level, A-weighted
63 Hz 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz
 SR-1120-1D 3 4 10 14 12 8 6 6 17
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