[Scope of Application]
Used to determine the permeability of various types of geotextiles and to measure the water flow rate vertically through a single layer of geotextile under specified conditions. The head of this instrument can be adjusted (0-300mm) and can maintain a stable head. It has a box shaped structure and is equipped with a water circulation system. It has two testing methods: flow meter method and conventional constant head cylinder method, as well as a variable frequency speed regulation flow system.
[Related Standards]
GB/T15789, JTG E50, SL/T235, ISO11058, ASTM D4716