The DRK461E automatic air permeability tester is used for industrial fabrics, non-woven fabrics, coated fabrics and other industrial papers (air filter paper, cement bag paper, industrial filter paper), leather, plastics, and other industrial papers that need to control air permeability. Air permeability test of chemical products. Standards Compliant: GB/T5453, GB/T13764, ISO 9237, EN ISO 7231, AFNOR G07, ASTM D737, BS5636, DIN 53887, EDANA 140.1, JIS L1096, TAPPIT251 and other standards. Features: 1. The large-screen color touch screen is used for independent control testing, or a computer can be used for control testing. The computer can display the dynamic curve of pressure difference-air permeability in real time, which is convenient for controlling product quality and enables R&D personnel to understand the air permeability of the sample more intuitively; 2. Using high-precision imported micro differential pressure sensor, the measurement results are accurate, the repeatability is good, and the data comparison error with foreign brands is very small, which is significantly better than related products produced by domestic counterparts; 3. Fully automatic measurement is realized, the sample is placed in the specified position, the instrument automatically finds the appropriate measurement range, automatically adjusts, and accurately measures. 4. Pneumatic clamping of samples, fully meet the clamping requirements of various materials; 5. The instrument uses a self-designed muffler device to control the suction fan, which solves the problem of large noise caused by similar products due to large pressure difference; 6. The instrument is equipped with a standard calibration orifice plate, which can quickly complete the calibration to ensure the accuracy of the data; 7. The long-arm clamping handle can measure larger samples without cutting large samples, which greatly improves work efficiency; 8. Special aluminum sample table, the whole machine shell is treated with metal baking paint process, which is durable and the whole machine has a beautiful appearance and is easy to clean; 9. The operation of the instrument is very simple, the Chinese and English interfaces are interchangeable, even inexperienced personnel can operate freely; 10. Test method: quick test (a single test time is less than 30 seconds, and the result can be obtained quickly); Stability test (the fan's exhaust speed increases at a uniform speed, reaches the set pressure difference, and maintains the pressure for a certain period of time to get the result. It is very suitable for some fabrics with relatively small air permeability to complete high-precision testing). Technical Parameter: 1. Specimen buffing method: pneumatic buffing, pressing the fixture by hand to automatically start the test. 2. Range of sample pressure difference: 1～2400Pa; 3. Air permeability measurement range and graduation value: (0.8～14000)mm/s (20cm2), 0.1mm/s; 4. Measurement error: ≤±1%; 5. Measurable fabric thickness: ≤8mm; 6. Suction volume adjustment: data feedback dynamic adjustment; 7. Sample area fixed value circle: 20cm2 8. Data processing capacity: each batch can be added up to 3,200 times; 9. Data output: touch products, computer display, A4 Chinese and English printing, reports; 10. Measuring unit: mm/s, cm3/cm2/s, L/dm2/min, m3/m2/min, m3/m2/h, d m3/s, cfm; 11. Power supply: Ac220V, 50Hz, 1500W;