Understanding the science behind electromagnetic sieve shakers reveals why they deliver superior particle analysis results.
Electromagnetic Drive Principles
Energy Conversion
An electromagnetic drive unit converts electrical energy into mechanical vibrations through electromagnetic field interactions.
Controlled Oscillation
The drive creates oscillations at high frequency, generating consistent vibration patterns that can be precisely controlled.
Three-Dimensional Motion
Unlike simple up-down or circular motions, electromagnetic shakers create complex three-dimensional movement that optimizes particle separation.
Particle Separation Science
Stratification
Vibration causes particles to stratify by size, with smaller particles moving toward the sieve surface.
Passage Probability
Each vibration cycle gives particles opportunities to pass through appropriately sized mesh openings.
Preventing Blinding
Interval timing and amplitude control help prevent mesh blinding by dislodging near-size particles.
Sieve Construction
Material
Sieves are typically constructed from high-quality Stainless Steel-316 (SS-316) for:
- Durability
- Corrosion resistance
- Easy cleaning
- No sample contamination
Mesh Specifications
Sieves conform to stringent industry standards with individual calibration certificates ensuring:
- Accurate aperture sizes
- Consistent wire diameters
- Proper weave patterns
Optimization Parameters
Amplitude
Adjustable amplitude (0.5-3.0 mm) allows optimization for:
- Different particle sizes
- Various material densities
- Specific separation requirements
Time
Programmable duration ensures:
- Complete separation
- Reproducible results
- Efficient analysis
Interval Settings
Burst modes help:
- Prevent mesh clogging
- Improve fine powder separation
- Handle difficult materials
Quality Control Applications
In pharmaceutical applications, electromagnetic sieve shakers:
- Size granules for tablet production
- Verify excipient specifications
- Support formulation development
- Enable stability studies