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    Ultrafine Particle Measurement Devices (U-SMPS)

    In addition to particle size and particle concentration determination in gases, Palas GmbH has also been engaged for decades now in measurability, i.e. the enlargement of ultrafine particles through condensation. The principle of operation of our new condensation particle counter and its associated advantages have been patented.

    At the same time, Palas GmbH has remained involved with the discharge and/or measurement of electrically charged aerosols.

    Our Principals have developed new measurement systems for determining the particle concentration and particle size of nanoscale particles within the size range of approx. 2 to 1000 nm. These new measuring devices provide special advantages with respect to accuracy, use, and handling.



    Palas 1000/2000 Series SMPS Systems for Aerosol Professionalss

    Palas 1000 series universal SMPS systems are available in a number of variations and these versions depend on the Palas condensation particle counter (CPC) selected and the Palas DMA (differential mobility analyzer also selected. A DMA is also known as a DEMC in the industry which is the terminology that Palas have used for many years. These systems also come with or without an integrated soft-x-ray neutralizer and other neutralizers are also available for use with these systems as required.




    PALAS SMPS 1000 Series PALAS SMPS 2000 Series

    CharmePalas Charme Reference Aerosol Electrometer

    The Palas charme reference aerosol electrometer is a high-capacity Faraday cup aerosol electrometer that measures the electrical charges on aerosol particles. For years, aerosol electrometers have been used in research applications to measure the mean charge of an aerosol. If the charge state of the particles for mono disperse aerosols is known, then these devices are able to quickly and easily determine the number concentration of particles with an approximate size of greater than 2nm.


    Palas Charme Brochure 2023

    U-RANGE 2000

    Combination of Fidas® 200 and U-SMPS systems for particle measurements in the size range of 4 nm to 40 µm

    The Palas U-RANGE combines two systems for continuously measuring airborne particles in a size range of 4 nm to 40 μm (depending on the configuration).

    The U-SMPS is a standard system for exact measurements of nanoparticle size distributions. Aerosol particles are selected in the classifier (DEMC) according to their electrical mobility and then counted by a condensation particle counter (UF‐CPC). Prof. Wiedensohler (IfT Leipzig, Germany) developed the algorithm used by Palas for the inversion of the measured data to yield the particle size distribution for the U-SMPS.

    The Fidas® 200 is a fine dust measurement system for ambient air quality measurements for regulatory purposes. It uses the recognized measurement technology of optical light scattering of single particles and is equipped with an LED light source with stable output and a long lifetime.



    U-RANGE 2000