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  • Particle size analyzer / benchtop / with data logger / computer-controlled

U-SMPS 2700 series

Article: 00106658

Particle size analyzer / benchtop / with data logger / computer-controlled

The Palas® universal scanning mobility particle sizer (U-SMPS) for high aerosol concentrations is available in two versions. The long classifying column (2700 X model variation) is able to reliably determine particle size distributions of 8 to 1,200 nm. A soft X-ray source as neutralizer is already integrated (see figure 1). The advantage instead of a radioactive neutralization (for example with Kr-85) is that there is no need in following requirements during the transportation.

The Palas® U-SMPS system includes a classifier [defined in ISO 15900 as a differential electrical mobility classifier (DEMC), also known as a differential mobility analyzer (DMA)], in which aerosol particles are selected according to their electrical mobility and passed to the outlet. The electrical charges carried by these particles are then measured in a downstream Charme®aerosol electrometer .

A major advantage of aerosol electrometers includes the fact that they enable very rapid measurements. However, this method requires a rather high number of charges. This limits the applicability to high aerosol concentrations (e.g. downstream from a combustion process or particle generator). The measurement of the charge per time unit (flow) is directly traceable to physical parameters. As a result, this method is primarily used as a reference during calibration of condensation particle counters (e.g. UF-CPC).

Specifications

  • Measured value: particle size
  • Portability: benchtop
  • Other characteristics: with data logger, computer-controlled

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