Akustron Air Permeability Tester

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

Operation
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