Dekati® eDiluter™


Dekati® eDiluter™ is a portable dilution system that makes sample conditioning as easy as it can be. The Dekati® eDiluter™ comes standard with a fixed 1:60 dilution factor, but it can as well be provided with a customer specific dilution factor in the range of 1:25-1:225. The Dekati® eDiluter™ dilution parameters can be monitored on an integrated LCD display and a rotary controller knob allows the user to fine tune the dilution temperature. The high sample output of the Dekati® eDiluter™ allows the system to be fully integrated with all Dekati® Instruments and is also compatible with all other commercially available measurement instruments.

The operating principle of the Dekati® eDiluter™ is based on a two-stage dilution. The first dilution stage is heated while the second dilution stage operates at room temperature where the aerosol sample is also cooled in a controlled manner. Each dilution stage consists of an ejector diluter with additional sheath air flow. The use of a large ejector nozzle and sheath air reduces the need for cleaning, and also minimizes particle losses within the system.


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Features of the portable dilution system

  • Portable two-stage dilution system for particle measurement applications
  • Fixed, stable dilution factor
  • Dilution factor not affected by the flow drawn to measurement instruments
  • Adjustable dilution temperature up to 400 °C
  • Sophisticated dilution stage design optimized for minimal particle losses
  • Two additional, integrated temperature controllers for regulating the temperature of external heaters such as heated sampling line and heated sampling probe
  • Complete measurement setups available for engine exhaust measurements and stationary source sampling
  • Can be upgraded to Dekati® eDiluter™ Pro with adjustable dilution factor between 1:25 and 1:225 and automatic compensation for the effects of sample pressure fluctuations
  • Each unit individually calibrated and provided with a calibration certificate



  • Stationary source emission measurements
  • Vehicle exhaust measurements
  • Blow-by gas emission measurements
  • Brake-wear emission measurements
  • Can be used to dilute aerosol sample from practically any source