Dekati® eDiluter™ Pro 1200C


The Dekati® eDiluter™ Pro 1200C is a modified version of the eDiluter™ Pro dilution system specifically designed for particle measurements from extreme temperatures such as measurements directly from a combustion zone or flame. The eDiluter™ Pro 1200C includes the standard eDiluter™ Pro unit combined with the Dekati® High Temperature Sampling probe that enables particle sampling from up to 1200 °C. The system has all the benefits of the standard eDiluter™ Pro added with the ability to take aerosol sample from extremely high temperatures.

The Dekati® High Temperature Sampling Probe is a heated dilution probe connected in front of the eDiluter™ Pro to take the sample from the high temperature source. The active cooling system built into the probe allows measurements from up to 1200 °C and direct aerosol sampling from a combustion zone or a flame. The High Temperature Probe includes a dilution stage where the sample is rapidly cooled to about 400 °C and a heated section to maintain stable sample conditions. The Dekati® eDiluter Pro™ is a two-stage dilution system where the sample is further diluted. Its compact structure includes two ejector diluters with additional sheath air flow for the second stage diluter. The dilution factor can be adjusted by changing the pressure of the dilution air and the system additionally includes an innovative method for compensating the effects of sample (inlet) pressure fluctuations on the dilution factor. The dilution factor of the complete setup with the High Temperature Sampling Probe ranges from 1:25 to 1:225.

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Features of the High Temperature Sampling Probe

  • eDiluter™ Pro combined with Dekati® High Temperature Sampling Probe
  • Sampling from up to 1200 °C
  • Three dilution stages: one in the sampling probe and two in the eDiluter™ Pro
  • Pre-separator heated Dekati® Cyclone for removal of large particles included
  • Adjustable dilution factor and dilution temperature
  • Stable dilution factor even in variable sample pressure conditions
  • Sophisticated dilution stage design, optimized for minimal particle losses
  • High diluted output sample flow, up to 80 lpm
  • Dilution factor not affected by the flow drawn to measurement instruments
  • Two additional, integrated temperature controllers for controlling temperatures of the High Temperature Sampling Probe and the Dekati® Cyclone heater
  • Instrument control via integrated display user interface
  • Dilution factor output via USB/RS-232
  • Complete measurement setups without the High Temperature
  • Sampling Probe also available for engine exhaust measurements and stationary source emission measurements
  • Each unit individually calibrated and provided with a calibration certificate


The Dekati® eDiluter™ Pro 1200C system is designed by VTT (Technical Research Centre of Finland) specifically for corrosion studies in mix-fuel firing energy production plants. In these studies, the Dekati® eDiluter™ Pro 1200C is used together with the ELPI®+ to measure particle size distribution directly from the combustion zone. The purpose of this is to identify markers in the particle size distribution to optimize the combustion process for minimal production of corrosive components. The Dekati® eDiluter™ Pro 1200C system can also be used in other particle measurement applications where the sample is in extremely high temperature.

High temperature sampling probe