The Air Permeability tester for textile consists of an arrangement for holding the test specimen between two flat faces so as to expose a known area to the flow of air through it, a vacuum system to draw air through the exposed of the test specimens, arrangement to measure the volume of air flowing through the test specimen, and arrangement to measure the pressure drop between the two faces of the test specimen, The vacuum needed to draw the air through the test specimen is created with the vacuum pump supplied with the instrument. The vacuum pressure is measured by the manometer tube terms of mm of water level & airflow is measured by the rotameters supplied with the instrument.

The Air Permeability tester for textile consists of an arrangement for holding the test specimen between two flat faces so as to expose a known area to the flow of air through it, a vacuum system to draw air through the exposed of the test specimens, arrangement to measure the volume of air flowing through the test specimen, and arrangement to measure the pressure drop between the two faces of the test specimen, The vacuum needed to draw the air through the test specimen is created with the vacuum pump supplied with the instrument. The vacuum pressure is measured by the manometer tube terms of mm of water level & airflow is measured by the rotameters supplied with the instrument.