FoamHigh-frequency absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Herstellerangabe unter http://www.optac.de, März 2002
SINOtec Stanac Helmholtz resonator made of closed-cell plastic
Stanac
PTB reference data
Original description
SINOtec Stanac Helmholtz resonator made of closed-cell plastic
Material properties
Manufacturer: SINOtec GmbH
Thickness: 35 mm
Wall distance: 0 mm, 10 mm, 15 mm
Up to fire class: highly flammable (B3 according to DIN 4102)
Application: wet areas
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 3 variants
αw
0.51
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.10 | 0.50 | 0.40 | 0.40 | 0.90 | 0.75 |
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| Compare | Value | |
|---|---|---|
| 15 mm | αw0.51 | |
| 10 mm | αw0.43 | |
| 0 | αw0.32 |
Dimensions: 1000 x 1000 x 35 mm