YS030 Geotextile Apparent Opening Size (AOS) Tester
Scope of Application
【Operating Instructions】
- Suitable for determining the apparent opening size (effective pore size) of various geotextiles and related products.
YS030 Geotextile Apparent Opening Size (AOS) Tester
Scope of Application
Suitable for determining the apparent opening size (effective pore size) of various geotextiles and related products.
Compliance Standards
GB/T 17634-1998: Geotextiles and related products - Determination of apparent opening size - Wet sieving method.
ISO 12956-2004: Geotextiles and geotextile-related products — Determination of the characteristic opening size.
Technical Specifications
Display: LCD screen with digital setting.
Clamp Inner Diameter: 130 mm.
Vibration Speed: 3000 times/min.
Sieving Frequency: 50 Hz.
Amplitude: 1.5 mm.
Grid: Mesh size is (10 ± 1) mm.
Nozzle Pressure: 300 kPa; Water Flow Rate: 0.5 L/min.
Timer: Two ranges: 0 ～ 99.99 s and 0 ～ 99 min 59 s.
Dimensions: 680 × 420 × 750 mm.
Weight: 45 kg.
Power Supply: AC 220V, 50Hz, 300W.
Test Principle
Using a single layer of geotextile or related product specimen as a sieve screen without tension, water is sprayed onto the specimen and graded particle materials under specified vibration frequency and amplitude, allowing the graded materials to pass through the specimen. The apparent opening size of the specimen is expressed by the particle size of the material that passes through.
