SMPS systems operate based on the principle of differential mobility analysis. The process typically involves several steps:
1. Aerosol generation: Particles are generated and introduced into the system. 2. Neutralization: The aerosol is passed through a charger to achieve a known charge distribution. 3. Differential Mobility Analyzer (DMA): The charged particles are classified based on their electrical mobility. 4. Detection: A Condensation Particle Counter (CPC) or an Electrostatic Classifier (EC) counts the particles and provides size distribution data.
This technique allows for high-resolution measurements of particle size distributions in real-time.
