ASTM D4491 Geotextile Water Permeability Tester DW1320
Geotextile Water Permeability Tester, also named Vertical Permeability Test Apparatus For Geotextile or Water Permeability Test For Geotextile Which is used to measure the water permeability coefficient/hydraulic conductivity of a single layer of geotextile or related product.
astm d 4491Geotextile Water Permeability Tester DW1320
astm d 4491 Geotextile Water Permeability Tester is used to measure the vertical permeability of geotextile and its related products. The vertical permeability of geotextile and its related products was determined by constant water head method.
The instrument Use an open structure (see GB/T15789 5.2.1), which is designed to refer to the schematic diagram, and the head of the instrument.
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Follows are features of Geotextile Water Permeability Tester :
- Transparent construction, convenient to observe whole processes of test;
- Use stainless steel lifting screw to adjust max. water head height and servo control system to keep water head constant;
- it is equipped with water cycling system;
- Water flow velocity precisely controlled by servo control system instead of water tap;
- Timer to time the whole process of test;
- ViloTM motor and pump from German;
Application of Geotextile Water Permeability Tester
Geotextile Water Permeability Tester is used to determine the water permeability coefficient/hydraulic conductivity of a single layer of geotextile or related product normal to the plane, without load, by the constant head method.
Based on the national standard research and development design of the surface water flow of geosynthetic materials. It is suitable for measuring the vertical penetration of all kinds of geotechnical materials.
Geotextile Water Permeability Tester complies with ISO11058:1999,ASTM D4991, GB/T 15789-2005 etc international and retailer standards.
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Standard of Geotextile Water Permeability Tester
|ISO11058:1999||ASTM D4991||GB/T 15789-2005|
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Key specification of Geotextile Water Permeability Tester
|Inner diameter of clamps||Ф50±1mm, Ф100±1mm|
|Water head||adjustable 0~300mm, with a water level|
|Gauge to indicate|
|Resolution of water head||1mm|
|Adjusting mode of water head height||stainless steel lifting screw, manual|
|Method to keep constant water head||adjust water flow velocity with servo control system|
|Power supply||220V 50HZ|
|Max. dimensions||1520×570×1700mm (L×W×H)|