Nanoparticle Measuring Devices » U-SMPS system

Determination of the particle size distribution of ultrafine aerosols from 4 nm to 1.2 µm

The U-SMPS series comprises a DEMC particle classifier, with which a monodisperse particle fraction is obtained from a polydisperse aerosol, depending on the applied voltage. The number concentration is determined with a particle counter. Prof. Wiedensohler (IfT Leipzig, Germany) developed the algorithm used by Palas® for inversion of the measured data to yield the particle size distribution.

The U-SMPS is able to measure concentrations of up to 108 particles/cm3 . The U-SMPS is equipped with a continuous and fast-scanning principle of measurement and scans both up and down. Palas® is the first manufacturer in the world to develop and incorporate this up-and-down scan mode. The U-SMPS universally supports DMAs, CPCs, and aerosol electrometers from other manufacturers. It is able to be connected to other computers or networks using various interfaces (USB, LAN, WLAN, RS-232/485).

The U-SMPS is successfully used in practice due to its special advantages.


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