Scope of Application It is used to test the air permeability of various materials such as fabrics, non-woven fabrics, mesh fabrics, paper, papermaking felts and glass fibers. It is especially suitable for mobile testing demands in the papermaking felt industry. The instrument can be applied to on-line production testing of manufacturing enterprises, laboratory testing, and spot inspection by national quality inspection authorities when carried to enterprise sites. Compliance Standards GB/T5453, GB/T13764, ISO9237, ISO7231, ISO5636, BS5636, ASTM D737, DIN 53887, JIS L1096, etc. Instrument Features The portable unit can complete a full test independently without extra operations; data is automatically saved to improve testing efficiency. Adopting new craftsmanship and high-end configuration, the instrument features an elegant appearance, stable performance and easy operation, with touch screen display and control. Testing is controlled via touch screen, enabling researchers to intuitively check the air permeability performance of samples. Equipped with a high-precision micro-differential pressure sensor, it delivers accurate measurement results with good repeatability. It shows minimal data deviation compared with foreign brand equipment and is obviously superior to similar domestic products. Portable design for easy carrying, meeting the requirements of multiple application scenarios.