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Portable Air Permeability Tester

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Portable Air Permeability Tester
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Portable Air Permeability Tester

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This Portable Air Permeability Tester can test filter papers, non woven and textile fabrics within seconds. Easily transportable, this unit is ideal for monitoring material on the production line. And inspecting incoming material on-site and on-going quality control in the lab. Constructed of the most rugged materials, the AKUSTRON withstands the demands of constant usage.

The procedure to test a sample is easy. Firstly,  the sample is inserted into the slot, and the lever is pulled forward. This clamps the sample and begins the testing automatically. The method of measurement is based on two, long-life approved speakers. That is the speaker in the lower enclosure generates an oscillating air-column which displaces air through the test sample. And the second speaker in the upper enclosure works as a sensor. Thus, measures the amount of air that passes through the clamped sample.

The software automatically displays the test data into an open spreadsheet. Thus, the data can also be downloaded directly to a company’s existing quality control program.  The ease of operation ensures highly repeatable results. Moreover, studies have prove that the results correlate accurately with testing standards. Which are DIN 53 887, DIN 53 120, ISO 9237 and ASTM D 737-96. A brass test-plate is available to check the accuracy on a regular basis.


  • Nonwovens
  • Filter Paper
  • Textiles
  • Webbed Materials


  • Hand lever for automated testing
  • 14.2mm digital display
  • Brass test plates
  • RS232 interface cable option


The measurement is completed in about 3 seconds, and results are shown immediately on the integrated digital display. An RS-232 interface is able to send the test data directly to a PC.


  • DIN 53 887
  • DIN 53 120
  • ISO 9237
  • ASTM D 737-96

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