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Mass monitor

Dekati Mass Monitor (DMM) is a real-time instrument for automotive particulate mass emission measurements, designed specially to meet the needs of the automotive industry.

Conventional PM measurements are based on particulate mass measurement with a gravimetrical filter, resulting only in a total, cumulative mass emission. Real-time data from DMM provides second-by-second information not only about particle total mass but also median diameter of particles, which are the two important parameters related to particle health effects. Also, mass measurement provides information that is comparable with existing data and with emission regulations. For example, this is not the case with a number of surface area measurement instruments.

An interactive user interface enables monitoring of total concentration and particle size distribution in several different modes. These modes include parallel real-time size distribution and total concentration monitoring even from several units at the same time in the same window. Instant and continuous feedback as a function of particle size makes the particle removal device development illustrative and more efficient. Since ELPI is a collecting device, it is possible to make subsequent chemical or gravimetric analysis on the collected, size classified samples.

Technical Specs

Particle size range 0 - 1.2 um
Number of stages 6 impactor stages + one mobility channel
Volumetric flow rate 10 lpm (nominal)
Lowest stage pressure 100 mbars
Operation temperature 5 - 40ºC
Operation humidity 0 - 60 %RH
Response time Under 5 seconds
DMM unit dimensions W x L x H 560 x 420 x 300 mm
Installable to 19" rack
Unit weight 35 kg
Required accessories - Vacuum pump
- Computer
- Sampling system
Computer requirements Pentium II processor, 64 MB RAM, MS-WINDOWS 95TM, 98TM, NT 4.0TM or 2000TM
Pump requirements 7 m³/h at 100 mbar

Data sheet


See also
Low Pressure Impactor
Dekati Low Pressure Impactor, DLPI, is a 13-stage cascade impactor used in many different type of applications. The instrument size classifies particles according to their aerodynamic diameter from 30.....
Particle sampler
Dekati Fine Particle Sampler (FPS) is a complete sampling system for particle measurements from all types of combustion or industrial processes. Adjustable dilution ratio, dilution temperature and res.....
Particle Size OnLine Analyser

The Particle Size Online Analyser (POLA) 3000 offers a fast, on-line solution to granular particle size control. The POL.....


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