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Aerosol Science

Cambustion Aerosol Instrumentation

Since 2002 Cambustion have offered a range of aerosol instruments designed for aerosol science & laboratory applications.

The launch of the Centrifugal Particle Mass Analyzer (CPMA) further expands Cambustion's range of aerosol instruments.

The flexible sampling capabilities and and rapid response times of Cambustion's established DMS500, DMS50 and SCS systems make these highly suited to aerosol laboratory work, an application which has grown significantly as the research community seeks to update older equipment (e.g. SMPS).

Electrical Mobility Size Distribution Measurements

The SMPS (Scanning Mobility Particle Sizer TM) by TSI is an example of a scanning instrument offering electrical mobility measurements, using a Differential Mobility Analyzer (DMA) and Condensation Particle Counter (CPC). Such a system offers excellent sensitivity, but requires around 60-90 seconds to make a single measurement.

Heavy duty diesel exhaust size spectra from DMS500Cambustion's DMS series instruments offer real-time electrical mobility based particle size/number spectra. The Engine Exhaust Particle Sizer (EEPS TM) and Fast Mobility Particle Sizer (FMPS TM) instruments made by TSI operate on a similar principle.
 
The DMS500 and DMS50 offer excellent sensitivity at the small end of the size range. High charging efficiency and low diffusion losses through the use of sheath flows and high sample flowrates make the DMS Series particularly attractive when particles smaller than 50nm are to be measured.
 
Since the purpose of real-time instruments is to study rapidly changing particle spectra, Cambustion’s DMS series products are carefully designed to achieve the fastest possible fluidic response time and fast data rate (As low as 200ms T10-90% response time, and 10Hz sampling / 0.1 second resolution).
 
Together these make the Cambustion DMS series the solution for studying transient aerosol phenomena. The fully integrated dilution system and classifier interface seamlessly, with full control, measurement and data correction of all flows.

DMS500 for fast measurement of ultrafines between 5nm and 2.5 micronThe DMS500 and DMS50

With optional integrated dilution for sampling high concentration aerosols, heated sampling systems for sampling wet aerosols and high sensitivity for ambient measurements, the DMS500 is used in laboratories around the world for aerosol measurement, offering particle size distributions in the range 5 nanometres - 2.5 microns.

DMS50 for fast response mobile measurements of changing aerosolsThe DMS50 unit offers similar features to the DMS500, in a smaller and lighter package. With built in 12V DC capability, the DMS50 is perfect for mobile or field studies.

Both instruments offer unique real-time lognormal fitting, a feature which is of particular use when sampling artificial aerosols with narrow gsd.

Centrifugal Particle Mass Analyzer

Centrifugal Particle Mass Analyzer for ultrafines

The Centrifugal Particle Mass Analyzer (CPMA) is the latest addition to the Cambustion aerosol science range. The CPMA allows direct classification of ultrafine particles according to mass, while its high transmission efficiency makes it attractive for a range of aerosol science applications.

For more information visit the CPMA pages.

PSL size check kit for aerosol sizer verificationPSL Particle Size Check

Verifying the sizing accuracy of aerosol instruments is more difficult than for gas analyzers, since aerosols can not be stored. The commercial availability of Polystyrene Latex Spheres as NIST traceable size standards offers a comparatively convenient solution. The PSL Size Check Kit offers a standalone means of nebulizing and drying PSL, allowing it to be presented directly to an aerosol sizing instrument.

Dual Sampling Accessory for multi-point samplingFiltration Efficiency Studies

Many aerosol experiments involve comparing the input and output of a piece of equipment.

The unique Dual Sampling Accessory for the DMS series allows electrical switching of the sampling location between two points- for example upstream and downstream of a filter.

SCS Smoking Machine

Smoking machine

The SCS accessory for the DMS500 offers real time measurement of particle size distribution in a tobacco aerosol, with the ability to reproduce continuously varying flow profiles.
   

Cambridge Particle Meeting

Cambustion also sponsor the annual Cambridge Particle Meeting which is attended by aerosol and particle researchers from around the world.
   
EEPS TM, FMPS TM and Scanning Mobility Particle Sizer TM are trademarks of TSI Inc

 



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