Real-time measurement instruments
ELPI™ (Electrical Low Pressure Impactor) is an instrument that measures particle size distribution and concentration in real-time. The ELPI™ operates in the size of 7 nm – 10 µm. Its rapid response along with compact and sturdy design makes it an excellent measurement instrument for both demanding environments and research. ELPI™ applications include combustion and automotive exhaust particle size distribution measurements, pharmaceutical inhaler studies, filter grade efficiency and particle charge measurements as well as indoor and outdoor air quality measurements.
Outdoor Air ELPI™ (Electrical Low Pressure Impactor) is a modified version of the standard ELPI™ instrument. The Outdoor Air version is specially designed for ambient air measurements, although it can be used in other applications as well. The operating principle of the Outdoor Air ELPI™ is the same as that of ELPI™’s, some features have been added to the Outdoor Air version to make it more suitable for ambient air monitoring.
DMM (Dekati Mass Monitor) is a real-time instrument for diesel and gasoline vehicle PM (Particulate Matter) emission measurements. Used either with a tailpipe sampling system or existing CVS tunnel it provides second-by-second information about vehicle PM mass emission.
ETaPS (Electrical Tailpipe PM Sensor) is a unique device for diesel and gasoline vehicle PM emission measurements. It is installed directly into the vehicle tailpipe, and therefore it does not need any complex and expensive dilution systems usually required for PM measurements. ETaPS detects the amount of particles going through the sensor head. Particles are not collected and that reduces the need for maintenance.
Gravimetric Impactors
DLPI (Dekati Low Pressure Impactor) is a 13-stage cascade impactor for measuring gravimetric particle size distribution. DLPI size classifies particles from 10 microns down to 30 nm, filter stage accessory enables collection of particles below 30 nm. DLPI is available with sample flow rates of 10 and 30 lpm.
DGI (Dekati Gravimetric Impactor)is a cascade impactor with cutpoints of 2.5, 1.0, 0.5 and 0.2 microns and a back-up filter. The particles are collected on Ø47 mm filters with sample flow rate of 70 lpm. DGI is typical used in combustion measurements including automotive emission testing, but it is can be applied to any measurements where particles in its operational range exist.
Dekati PM10 impactor is a three stage cascade impactor for determining particle gravimetric mass size distribution. The PM10 impactor provides information on the PM10, PM2.5 and PM1 mass size fractions. The PM10 impactor is available with two sample flow rates and complete setups can be provided for different applications including air quality monitoring and combustion flue gas measurements.
SDI (Small Deposit Area Impactor) is a 12 stage cascade low pressure impactor designed especially for applications where small particle collection area is needed. SDI collects particles in 12 size fractions in the size range of 45 nm – 8.5 µm. The relatively high sample flow rate together with the small particle collection area (Ø 8 mm) increase the sensitivity of the particle analyses even when the sample concentration is low.
