MetalLow absorption
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer data unter www.owa.de
Value from the PTB table, not verified
Odenwaldwerk OWAtecta L O steel ceiling tile, unperforated
OWAtecta – L O, unperforated
PTB reference data
Original description
Odenwaldwerk OWAtecta L O steel ceiling tile, unperforated
Material properties
Manufacturer: Odenwaldwerk
Perforation: unperforated
Surface: fire-galvanized, powder-coated
Application: ceiling
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)
NRC
0.05
derived from ISO 354 lab data
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.15 | 0.10 | 0.05 | 0.05 | 0.05 | 0.05 |
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Value from the PTB table, not verified
NRC: 0.05 (derived from ISO 354 lab data)
Measured values as a table (1 measurement)
| Build-up | NRC | 100 Hz | 125 Hz | 160 Hz | 200 Hz | 250 Hz | 315 Hz | 400 Hz | 500 Hz | 630 Hz | 800 Hz | 1000 Hz | 1250 Hz | 1600 Hz | 2000 Hz | 2500 Hz | 3150 Hz | 4000 Hz | 5000 Hz |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Measurement 1 | 0.05 | 0.20 | 0.16 | 0.16 | 0.14 | 0.12 | 0.10 | 0.08 | 0.06 | 0.05 | 0.04 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.04 | 0.04 | 0.04 |
Measured values as a table (1 measurement)
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