Dekati Ltd.

- Model eFilter™ - Standard Gravimetric Filter Holders



Dekati eFilter™ is completely new instrument that adds real-time PM detection into a standard gravimetric filter holder. The Dekati® eFilter™ assembly is approximately the same size as a normal PM filter holder and it fits directly into existing exhaust PM filter sampling systems including CVS tunnels. The eFilter™ can also be used in any other application where gravimetric measurements are made to replace the traditional filter method. In addition to the standard gravimetric filter measurement, the Dekati® eFilter™ gives a real-time signal throughout the filter sampling period which allows monitoring PM accumulation on the filter during different stages of the filter sampling. This real-time signal changes the standard filter holder into a sensitive, dynamic measurement instrument for modern routine emission measurements.

  • Standard gravimetric filter measurement that meets
  • US EPA requirements
  • Compatible with existing gravimetric PM measurement filter holders and sampling systems
  • Automated and sensitive real-time PM measurement
  • Battery operated with internal pump for real-time PM measurement
  • Fully automated operation; gravimetric filter flow automatically starts the real-time measurement
  • Plug-and-play and maintenance free instrument
  • Replaceable real-time detection module
  • Can be used inside a 47 °C cabinet
  • Touch screen user interface
  • Separate charging station with automatic flow calibration
  • Data saved to a micro-SD memory card

The Dekati® eFilter™ was first developed for engine emission measurements where it is used to replace the standard gravimetric filter holders. The eFilter™ real-time signal is used for controlling and verifying the quality of the gravimetric measurement and detecting high emitting phases in engine test cycles. Besides engine testing, the eFilter™ can be used in any other application where gravimetric measurements are made to replace the traditional filter method. These applications include e.g. air quality measurement both indoors and outdoors and industrial emission measurements.

  • Primary sample flow rate : 20-100 lpm
  • Secondary sample flow rate : 0.5 lpm, automatically adjusted
  • Sensitivity : approx. 1 μg/m3 or 1000 #/cm3 for 70 nm particles
  • Saving interval : 1 s
  • Operating conditions : 10-50 °C
  • Filter holder : US EPA 40 CFR Part 86 Subpart N
  • Data transfer : Micro-SD card, USB
  • Dimensions : H225 x W85 x L90 mm
  • Weight : 1.5 kg
  • Inlet/outlet : Swagelok® quick connectors, G1/2' thread

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