Resistivity Meter

Airflow Resistivity Meter

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.

Airflow resistivity meter SIGMA

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.

New acoustic material development
SIGMA-X software for airflow resistivity meter

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

High frequency tube drawing - grey
High frequency tube drawing - Vertical


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

Airflow resistivity meter What is in the box

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

Circular knive

Allows better control of porous material samples geometry.

Porous material slicer

Material slicer

Holds a porous sample in place during slicing.

Air compressor for resistivity meter SIGMA


Perfectly adapted for your airflow resistivity meter.

Enclosure for airflow resistivity meter SIGMA


Protects your airflow resistivity meter from harsh environments.

Additional sofware

NOVA Logo - Simulator of Multilayer Acoustic Materials


Optimize the acoustic properties of multilayer materials.

FOAM-X Logo - Identification of Acoustic Modeling Parameters of Porous Materials


Extract the physical parameters of acoustic materials.


Store vibro-acoustic material parameters and associated files.

Additional services

Reference sample kit for calibrating Mecanum measuring instruments - Cropped

Calibration services

Buy a reference sample kit or send us our instrument for calibration.

Interested? Ask for your free quote.

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