Dekati® eDiluter™ Pro


Dekati® eDiluter™ Pro is a portable dilution system that allows easy sample conditioning for a wide range of particle measurement application. Its compact structure includes a two-stage dilution system with an adjustable dilution factor ranging from 1:25 to 1:225. The high sample output of the Dekati® eDiluter™ Pro allows the system to be fully integrated with all Dekati® Instruments and is also compatible with all other commercially available measurement instruments.




Dekati® eDiluter™ Pro features

  • Portable two-stage dilution system for particle measurement applications
  • Suitable for high temperature applications up to 1200 °C
  • Adjustable dilution factor and dilution temperature
  • Automatic compensation for sample inlet pressure fluctuations
  • Different dilution factor settings have minor effect on the inlet flow rate
  • High output sample flow, up to 80 lpm
  • Dilution factor not affected by the flow drawn to measurement instruments
  • Stable dilution factor even in variable sample pressure conditions
  • Adjustable dilution temperature
  • 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
  • Option for remote control and monitoring of dilution parameters
  • Dilution factor output via USB/RS-232
  • Complete measurement setups available for engine exhaust measurements and stationary source samplings
  • Each unit individually calibrated and provided with a calibration certificate

Dilution factor Adjustable 1:25 -1:225
Inlet pressure monitoring Active monitoring and stabilization of the
dilution factor at 900-1200 mbar inlet
Sample temperature (inlet) Max 600 °C. Up to 1200 °C with optional Dekati®
High Temperature Sampling Probe.
Diluted sample temperature (outlet) Close to ambient
Sample flow rate (inlet) 3-20 lpm, depending on the dilution factor
Diluted sample flow (outlet) 50-80 lpm
Dilution temperature Max 400 °C
Dilution air Clean and dry pressurized air,
min. 4.5 bar abs., ~120 lpm 
Regulatory compliance UN/ECE-R83 (Rev.5),
UN/ECE-R49 (Rev.6) and
SAE AIR6241 (requires additional, optional
Power requirements 110 - 230 V
Max 550 W with heated dilution
Max 1.5 kW with two external heaters
Dimensions H195 x W168 x D520 mm
Weigh 6.3 kg
Dilution stage material Stainless steel, AISI 316


The operating principle of the Dekati® eDiluter™ Pro is based on two-stage dilution. The first dilution stage is heated while the second diution 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 reduced the need for cleaning, and also minimizes particle losses within the system.

Operating principle of the Dekati® eDiluter™ Pro

  • Pressurised air cleaning and drying unit for dilution air
  • Heated sampling lines, sampling probes and isokinetic sampling nozzles
  • DEED-300 for sampling from up to 10 bar sample pressure
  • High Temperature Sampling Probe for sampling from up to 1200 °C
  • Evaporation chamber and catalytic stripper as future option

Dekati® eDiluter™ Pro brochure










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