The SIEVEA 502 Vibratory Sieve Shaker is an advanced, efficient screening device compared to traditional mechanical vibratory sieve analyzers. In addition to using particle weight for screening, the system also employs a three-dimensional electromagnetic field to create a unique particle motion. This field makes the powder particles bounce vertically while moving horizontally, thereby improving screening and classification efficiency.
The SIEVEA 502 consists of a base, a sieve plate, a three-dimensional electromagnetic generator, and standard test sieves. It uses electromagnetism to create a three-dimensional oscillation movement, which ensures even distribution of powders throughout the sieve mesh.
This unique feature also eliminates particle clogging, allowing smaller particles to pass through. The analyzer’s screening time and amplitude are user-adjustable, and it operates with minimal noise.
Studies have shown that it offers the same efficiency as an air-jet sieve when operated using a 75-μm mesh. The equipment adheres to the European Pharmacopoeia Ph.Eur.2.9.38 standards.
- Testing range: 20 μm to 125 mm
- Maximum load: 20 kg
- Amplitude: 0–3 mm
- Vibration frequency: 3000 times/minute
- Maximum stages: 17
- Sieving particle size range: 20 μm to 125 mm (specific range may vary depending on material characteristics)
- Maximum sample capacity: 3000 g (varies according to material characteristics)
- Standard sieve diameter: 200 mm
- Measurement accuracy: < 1 %
- Time display: Digital, 0–99 minutes 99 seconds
- Power supply: 220 V 50 Hz / 400 W
- Repeatability error: < 1 %
- Dimensions: L35 × W35 × H25 cm / 38 kg
The amplitude regulator and timer regulate the intensity, initiation, and termination of the three-dimensional electromagnetic excitation force, respectively. This coordinated control allows for optimal screening of various powders with high accuracy and consistency.
The electromagnetic force generates different motions, including horizontal circular motion, tapping, or a mix of both, or vertical vibration. The timer supports a range of settings. Once screening is complete, the material retained on the sieve is weighed to determine the percentage retained.