DL2 Particle Strength Tester Technical Specification  

1. Instrument Overview  

- Precision equipment for measuring particle crushing strength  

- Evaluates mechanical integrity of granules, pellets and powders  

- Essential for pharmaceutical, catalyst and material industries  

2. Testing Principle  

- Applies controlled compressive force to individual particles  

- Records fracture point and force-displacement curve  

- Calculates crushing strength and deformation characteristics  

3. Key Features  

- Automated single particle feeding system  

- High-resolution force sensor (0.01N accuracy)  

- Optical particle size measurement  

- Touchscreen control interface  

- Statistical analysis software  

4. Technical Parameters  

- Force range: 0.1-500N (±0.5%)  

- Displacement resolution: 0.1μm  

- Particle size range: 100-5000μm  

- Testing speed: 1-100 particles/minute  

- Power: 220V, 50Hz  

5. Standards Compliance  

- USP <1062> Particle Characterization  

- ASTM E382 (Standard Test Method for Crushing Strength of Iron Ore Pellets)  

- ISO 4700 (Determination of crushing strength of iron ore pellets)  

6. Testing Procedure  

1) Sample Preparation  

- Sieve particles to desired size fraction  

- Condition at controlled humidity if required  

2) Test Setup  

- Select appropriate force range  

- Calibrate with reference particles  

- Set testing parameters  

3) Test Execution  

- Automatic particle feeding  

- Individual particle compression  

- Data recording for each test  

4) Data Analysis  

- Calculate average crushing strength  

- Determine strength distribution  

- Evaluate deformation behavior  

7. Data Interpretation  

- Crushing strength = Fracture force/Particle size  

- Weibull modulus calculation  

- Strength distribution histogram  

- Typical units: N/mm or MPa  

8. Applications  

- Catalyst pellet quality control  

- Pharmaceutical granule testing  

- Ceramic powder characterization  

- Fertilizer granule development  

- Battery material evaluation  

9. Maintenance Requirements  

Daily:  

- Clean particle feeding path  

- Verify force sensor zero  

Weekly:  

- Check mechanical alignment  

- Clean optical components  

Monthly:  

- Full calibration  

- Software updates  

10. Safety Features  

- Emergency stop button  

- Overload protection  

- Safety guard interlock  

- Automatic force limitation  

11. Performance Metrics  

- Force measurement accuracy: ±0.5%  

- Positioning repeatability: ±1μm  

- Testing throughput: up to 100 tests/hour  

12. Customization Options  

- High-temperature testing  

- Humidified environment  

- Specialized particle holders  

- Advanced data analysis packages