air permeability tester uses new technology, combined with the most common test methods, to test the breathability of paper, cardboard or other sheet objects. This instrument is a single chip microcomputer control, fully automated instrument. Its test method meets the requirements of Schober and Bentsen and Goerle and other methods, and is an advanced instrument for testing paper breathability in the paper, packaging and cigarette industry in China, and its performance meets international standards. Meet the standard: GB/T458, ISO536/2, QB/T1667, GB/T22819, GB/T23227, ISO2965, YC/T172, GB/T12655. Technical parameters: Measuring range (pressure difference 1kPa) : Type A: 0 ~ 2500mL/min, 0.01 ~ 42μm/(Pa•s); Unit (four) : μm/(Pa•s), CU, ml/min, s(Gurely) Accuracy: Type A: 0.01μm/Pa•s, 0.06ml/min, 0.1s(Gurely) Test area: 10cm²(6.45cm2, 2cm2, other areas can be customized) Linear error: ≤1% test Pressure difference: 0.05kPa ~ 6kPa Power supply: AC 220V±22V, 50Hz Weight: about 30 kg Touch screen translation in Chinese and English Working principle According to the principle of pressure difference method, the pre-treated sample is placed between the upper and lower measurement surfaces, and a constant pressure difference is formed on both sides of the sample. Under the action of pressure difference, the gas flows from the high pressure side through the sample to the low pressure side, and the permeability of the sample is calculated according to the area, pressure difference and flow rate flowing through the sample. Product characteristics 1.The chip and sensor of the instrument are imported from the United States, and the test results are accurate, good repeatability and high precision. 2.Exquisite design: the instrument uses microcomputer technology, the test process is completely automated, fast and accurate. Touch screen LCD display results, and with data recording and processing functions, with printout. 3. Superior performance: Compared with the traditional breathability meter, the instrument has a high advantage, for the paper with low breathability, a higher pressure difference can be set, and for the paper with high breathability, a lower pressure difference can be set, and the results can be easily and accurately measured. 4.Easy to use, high automation: the traditional breathability meter test is not only slow and laborious, on the contrary, the breathability meter test is automatic and fast, and the accuracy of the test results is therefore guaranteed. Misoperation or low reproducibility of test results, which are caused by poor design and manufacturing techniques of the instrument, are effectively avoided in this instrument. 5. Wide range of adaptation: the instrument has three models (type A, type B, type C), and its measuring range covers all paper permeability tests. Type A is often used for wrapping paper and cultural paper (such as paper bags, filter paper, thermal paper, etc.), type B is often used for tobacco industry paper (such as cigarette paper, loading paper, striped paper, etc.), type C is often used for punching paper (such as molding paper, tea filter paper).