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Measures the air porosity of filter paper, non-wovens and textiles

Measures the air permeability of filter papers, non-wovens and textile fabrics. Easily transportable. Ideal for monitoring material on the production line, inspecting incoming material on-site and on-going quality control in the laboratory. Constructed of rugged materials, the Akustron readily withstands the demands of constant usage.

Standards: DIN 53887, 53120, ISO 9237, ASTM D737-96

Automated testing. No user-induced variables. The sample is inserted, a lever is pulled to clamp it and the testing begins automatically. The measurement is completed in approximately 3 seconds and the results are shown immediately on the integrated digital display.

The method of measurement is based on two, long-life approved speakers. The speaker in the lower enclosure generates an oscillating air column, which displaces air through the test sample. A second speaker in the upper enclosure works as a sensor and measures the amount of air that passes through the clamped sample.

Measurement range
Air permeability between 4 and 400 cfm (cu ft/sq ft min) at ∆p = 0.5 in H2O = 127 Pa
30-3000 l/m2 at ∆p = 200 Pa
30-3000 mm/s at ∆p = 200 Pa

Hand lever initiated automated testing Two brass test plates for accuracy verification
14.2 mm high digital display Quick and easy to use
Results displayed after 3 seconds from the start of the test RS-232 interface for sending test data directly to a PC and the bespoke Akustron software or an existing quality control program
Sample Size 5 x 12 cm minimum, Thickness 3 mm maximum
  • 110-120/220-240 V, 50/60 Hz; 30 V/A; 500 mA
  • 16 x 27 x 20 cm (W x L x H); 5 kg Net

For further information, please contact our sales team on 01223 492081 or via

Akustron Air Permeability Tester
Akustron Air Permeability Tester