[scope of application] Used to test the rapid determination of air permeability of coating fabrics, filter paper, filter material, plastic and other sheets of material. [meet a criterion] GBT24218 Test methods for textile nonwovens- -Part 15: Determination of air permeability [Performance characteristics] ● High-precision pressure sensor, high accuracy. ● Intelligent and smart touch interface, dynamic test full display. ● Automatic detection of the air permeability and air permeability of various samples. ● Different national standard parameters and units can be set arbitrarily, and the test results can be directly printed out without conversion. ● Unit of measurement: mm/s, cfm, cm3 / c m2/s, I / m2/s, I / dm2 / min, m3 / m2 / min