Scope of Application

【Operating Instructions】

This instrument is used to determine the water permeability of various types of geotextiles, specifically measuring the water flow rate vertically passing through a single layer of geotextile under specified conditions.The instrument features an adjustable water head (0-300mm) capable of maintaining a constant head. It has a box-type structure equipped with a water circulation system. It offers two testing methods: the Flowmeter Method and the Constant Head Cylinder Method, along with a variable frequency drive system for flow regulation.

YS020S Geotextile Vertical Permeability Tester

Scope of Application

This instrument is used to determine the water permeability of various types of geotextiles, specifically measuring the water flow rate vertically passing through a single layer of geotextile under specified conditions.

The instrument features an adjustable water head (0-300mm) capable of maintaining a constant head. It has a box-type structure equipped with a water circulation system. It offers two testing methods: the Flowmeter Method and the Constant Head Cylinder Method, along with a variable frequency drive system for flow regulation.

Compliance Standards

• GB/T 15789

• JTG E50

• SL/T 235

• ISO 11058

• ASTM D4716

Technical Specifications

1. Head Difference: 300 mmH₂O.

2. Clamp Inner Diameter: 50 mm ± 1 mm.

3. Specimen Thickness Range: 0.1 ～ 10 mm.

4. Flow Range: 0 ～ 5 L/min.

5. Floor-standing Model: Equipped with a water tank at the top to meet testing requirements for specimens with high permeability.

6. Material: The whole machine uses imported 304 Stainless Steel. The workbench uses imported special aluminum with sandblasting oxidation treatment, providing rust and corrosion resistance while keeping the machine relatively lightweight.

7. Flow Direction: Water permeates from below the specimen upwards. This eliminates head drop and prevents air bubble formation, ensuring accurate testing.

8. Flow Control: Equipped with four sets of flowmeters to control the head pressure difference.

9. Capacity: Flow can be controlled up to 5 L/min, capable of measuring the permeability of single-layer geotextiles.

10. Power Supply: AC 220V ± 10%, 50Hz.

11. Dimensions: 1200 × 620 × 1750 mm.

12. Weight: 80 kg.