This instrument is used to measure the water permeability of various types of geotextiles, and to measure the water flow rate through a single layer of geotextile vertically under specified conditions. The water head of the instrument can be adjusted (0-300mm) and can maintain a stable water head, box structure, equipped with water recycling system, with two test methods of flowmeter method and conventional constant water head graduated cylinder method, and frequency conversion speed regulation flow system. 【Relevant Standards】

GB/T 15789, JTG E50, SL/T 235, ISO 11058, ASTM D4716

【Scope of application】: This instrument is used to measure the water permeability of various types of geotextiles, and to measure the water flow rate through a single layer of geotextile vertically under specified conditions. The water head of the instrument can be adjusted (0-300mm) and can maintain a stable water head, box structure, equipped with water recycling system, with two test methods of flowmeter method and conventional constant water head graduated cylinder method, and frequency conversion speed regulation flow system. [Meet the standard]: GB/T15789、JTG E50、SL/T235、ISO11058、ASTM D4716 【Technical Parameters】: 1. Head difference: 300mmH2O 2. Inner diameter of the blower: 50mm±1mm 3. Thickness of the testable sample: 0.1~10mm 4. Flow range: 0~5L/min 5. Floor-standing model, equipped with a water tank on the top of the instrument, to meet the testing requirements of specimens with large water permeability 6. The whole machine is made of imported 304 stainless steel; the worktable is made of imported special aluminum, sandblasting oxidation treatment, anti-rust and anti-corrosion, and the whole machine is relatively light 7. The water is transmitted from the bottom of the specimen upwards, there is no drop, and no bubbles will be formed to ensure the test. 8. Equipped with four sets of flowmeters, which can control the pressure difference of the head. 9. The flow rate can be controlled to: 5L/min, which can measure the water permeability of a single layer of geotextiles. 10. Power supply: AC220V±10% 50Hz 11. Instrument shape: 1200×620×1750 (mm) 12. Weight: 80Kg