Mecanum’s airflow resistivity meter (SIGMA) is designed to obtain a reliable measurement of static airflow resistivity, resistance, specific resistance and permeability for a wide range of open-cell porous materials used for noise control.
Why choose Mecanum’s Airflow Resistivity Meter?
Follows ASTM C522-03 and ISO 9053 standards
Choosing an airflow resistivity meter compliant with ISO and ASTM standards ensures accuracy, reliability, and global acceptance. It offers precise measurements, compatibility with other equipment, regulatory compliance, and long-term value, making it a prudent choice for industries and research where airflow resistivity data is crucial.
Made for quality control in production and suppliers control
Mecanum’s resistivity meter can be integrated at the end of the production line to test product quality and consistency. The measurement procedure is simple and the software guides the operator to ensure a reliable response, without the need for long and costly training.
This system also allows you to quickly and reliably check the quality of your suppliers’ products. Resistivity is one of the key parameters governing the acoustic effectiveness of absorbing materials. Testing this parameter at the end of the production line ensures both the acoustic effectiveness of the material and the quality of the production line.
Supports you in new acoustic materials development
Resistivity is used by all theoretical models used to model sound absorption. The first model developed in this direction – Delany-Basely (1971) was based on this property. Our resistivity meter has been specially designed to allow reliable, fast and efficient measurements.
Paired with FOAM-X and NOVA software, our resistivity meter allows you to develop new materials with unrivaled acoustic performance.
Offers the power and convenience of SIGMA-X software
Our cutting-edge technology automatically detects the minimum flow velocity range, empowering you to effortlessly capture pressure drop data as it correlates with flow velocity, even at ultra-low levels as low as 0.5 mm/s.
Airflow Resistivity Meter techs specs
Dimensions
432 (L) x 370 (W) x 135 (H) mm
17.0 (L) x 14.5 (W) x 5.3 (H) inches
Sample diameter: 44.4 mm or 100 mm
Max sample thickness: 100 mm
Measuring range
Flow control: from 0.5 mm/s to 100 mm/s (depending on sample holder diameter)
Specific airflow resistance: 10 Pa.s/m to 110 kPa.s/m
Airflow resistivity: 400 to 4.6 x 10⁶ Pa.s/m²
Airflow resistance: 1275 to 1.4 x 10⁷ Pa.s/m³
Airflow permeability: 3.9 x 10⁻¹² to 4.8 x 10⁻⁸ m²
What’s in the box
SIGMA system
Two specimen holders (44.44 and 100 mm diameter)
Resistive film support
Verification sample
Grids to support soft materials
Rings to minimize air leakage around the sample
SIGMA-X measurement software
Measured properties
Static airflow resistivity (Pa.s/m² or rayls/m)
Static airflow permeability (m² or Darcy)
Static specific airflow resistance (Pa.s/m or rayls)
Static airflow resistance (Pa.s/m³ or rayls/m²)
Accessories and services
Accessories for porous materials
Circular knive
Allows better control of porous material samples geometry.
Material slicer
Holds a porous sample in place during slicing.
Compressor
Perfectly adapted for your airflow resistivity meter.
Enclosure
Protects your airflow resistivity meter from harsh environments.
