ISO 12956 Geotextile Equivalent Aperture Tester (Wet Sieve Method)
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Application
The equivalent pore diameter of geotextile and its related products was determined by wet screen method. The geotextile sample without tension is used as the screen, and the sample and graded particle material are sprayed with water under the specified vibration frequency and amplitude to make the graded particle material pass through the sample. The effective pore size of the specimen is expressed by the specific particle size of the passing particle material.
Standard
GB/T17634-2019:Geotextiles and geotextile-related products - Determination of the characteristic opening size - Wet sieving method
ISO/FDIS 12956-1998:Geotextiles and geotextile-related products - Determination of the characteristic opening size - Wet sieving method (Final Draft International Standard)
Features
It is suitable for the determination of effective aperture of various geotextiles.
Split type design is adopted to avoid damage to the control system caused by vibration during high-speed operation;
The parts are connected with aviation plug, easy to disassemble and assemble;
Using mechanical vibrating screen vibration, smooth and efficient;
Fully transparent protective device, can be cleaned to observe the experimental situation
The sample is placed on the metal grid to avoid excessive deformation of the sample due to the quality of the particle material.
Vibration time can be set arbitrarily, digital display time:
Adjustable amplitude, knob adjustment mode, simple operation;
Convenient experiment, simple operation.
Parameters
| Specification | Details |
|---|---|
| Inner diameter of the screen | 190mm |
| Vibration frequency | 50HZ |
| Vertical amplitude | 1.5mm |
| Nozzle pressure | 300KPa |
| Water output under working pressure | 500m³/min (Note: Original "m//min" likely intended as "m³/min") |
| Mesh aperture | 10 ± 1mm |
| Timing range | 0——99h (adjustable) |
| Power supply | AC 220V 50Hz |
| Overall dimensions | 650x550x1100mm |
| Weight | 35kg |
Accessoriess
Standard sieve holder
Water tank
Water pump
Flow meter
Particle dispensing device
Vibrating screening table
Particle collection tray
Precision balance
Data logging software
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