Water&Vapor permeability

  • Water&Vapor permeability

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Geotextile Plane Flow Meter

Geotextile Plane Flow Meter

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In order to evaluate the water conveyance capacity of the material, the geotextile surface flow meter was used to measure the permeable flow rate under  a certain hydraulic gradient of geotextile material under certain pressure .

ISO 12958 Geotextiles and geotextile-Related products - Determination of water flow capacity in their plane
ASTM D4716 Standard test method for determining the (in-plane) flow rate per unit width and hydraulic transmissivity of a geosynthetic using a constant head

GB/T 17633 Geotextiles and geotextile-related products-Determination of water flow capacity in their plane

Equipped with 10mm and 25mm thickness rubber foam pad to meet the 10mm, 10-25mm, 25mm thickness of the test requirements of the sample
Tightness test leakage rate : Less than 0.1 mL / s
Constant temperature constant speed water supply system: The temperature accuracy of 0.1℃
Flow unit width is adjustable
Built-in filter degassing device
Configure dissolved oxygen

Technical Parameters
Items Parameters
Normal pressure range 10-220kPa (according to the need to expand the
compression range to 5-260kPa)
Pneumatic pressurization system Provide 20kPa, 100kPa, 200kPa standard constant pressure and a variety of custom pressure
Pressure control accuracy Less than ± 2%
The loading platform area 300mm × 300mm
Specimen thickness Less than 50mm
Timer time setting range 0.1-9999s
Time accuracy 0.1s

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