SIGMA - Airflow resistivity meter
Applications
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Quality Control;
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Research and development;
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Model acoustic materials;
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Improve the accuracy of the indirect and inverse (Foam-X) methods.
Accessories
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Circular knives for porous materials
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Porous material slicer
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Enclosure
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Foam-X Software
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Nova software
Documents
Description
The airflow resistivity meter is designed to obtain a reliable measurement of static airflow resistivity, resistance and permeability for a wide range of open-cell porous materials used for noise control. The system is based on the direct method described in the ASTM C522-03 and ISO 9053 standards.
SIGMA-X software detects automatically minimum flow velocity measurement range and allows you to obtain the pressure drop as a function of the flow velocity as low as 0.5 mm/s.
Standards & certifications
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ASTM C522-03
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ISO 9053
Main advantages
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Measurement method according to ASTM and ISO standards
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Automatic measurement sequence through a user-friendly interface
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Automatic calculation of global statistics
Included
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SIGMA
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Two specimen holders (diameter of 100 mm and 44.44 mm.) *Other specimen holder sizes available on request.
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A resistive film support;
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A verification sample;
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Grids to support soft materials;
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Rings to minimize air leakage around the sample;
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SIGMA-X software.
Measured properties
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Resistivity to the passage of static air (Pa.s/m² or rayls/m)
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Resistance to the passage of static air (Pa.s/m or rayls)
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Static permeability (m² or Darcy)