Our modules for particle measurement are based on diffusion charging (DC) technology. We offer a particle counter based on the diffusion charging principle. The Advanced DC measurement is a two-step process, which consists of the charging of aerosol particles in the first step and the downstream measurement of a current induced by the charged particles.
The measurement principle is based on the accumulation of charge carriers on the particles. The formation of the charge carriers is realized by ionization by means of corona discharge. The gas ions attach themselves to the aerosol particles by diffusion. Thereby a particle size dependent electrical diffusion charging takes place. The charged particles induce an electric current in the sensor module, which can be measured.