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 all existing exhaust PM filter sampling systems including CVS tunnels. 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.
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 | 1s |
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 |
Dekati® eFilter™ is a 47 mm gravimetric PM filter holder with an integrated real–time detection module. The whole Dekati® eFilter™ assembly is in one compact single unit with automated operation. The real–time detection module is battery operated and it includes a diffusion charger with electrical detection for sensitive real–time measurement.
The real–time PM detection starts automatically when standard filter sampling is started requiring no actions from the operator. A separate pump is used in the real–time detection module to make sure the gravimetric filter sampling is not affected by the real–time measurement.
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