The Dekati® High Temperature ELPI®+ (HT-ELPI®+) is a new version of the Dekati® ELPI®+ that enables real-time measurement of particle size distribution from 6 nm up to 10 µm with 10 Hz sampling rate. The High Temperature ELPI®+ allows direct measurement of up to 180 °C aerosol sample without the need to cool the sample, which makes the HT-ELPI®+ a tool to characterize high temperature aerosols. Additionally, the HT-ELPI®+ has all the benefits of the ELPI®+ system including real-time standalone operation, wide sample concentration range, wide particle size range and robust structure for operation even in harsh conditions.


  • Wide particle size range: 6 nm – 10 µm with 14 size fractions
  • 10 Hz sampling rate
  • Temperature range 10 – 180 °C allowing direct measurement of high temperature aerosols
  • Possibility to collect size classified particles for chemical analysis
  • Wide operational concentration range
  • Independent operation or control via laptop using the ELPI®+VI software
  • Completely reversible to a standard ELPI®+ system for low temperature applications


  • Emission measurements
  • Combustion process studies
  • Stationary source emission cleaning device development and optimization
  • Engine emission after-treatment device development
  • On-board engine emission measurements
  • Blow-by gas emission measurements
  • Particle transformation studies and general particle research

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