CPMA | Centrifugal Particle Mass Analyzer
Second generation
The Centrifugal Particle Mass Analyzer
Adopted around the world since 2012, the Centrifugal Particle Mass Analyzer (CPMA) allows direct classification of aerosol by mass:charge ratio, with an unrivalled transfer function.
The CPMA uses opposing electrical and centrifugal fields to classify particles, with the ability to vary the electrical field and rotation speed to select different particle masses.
Unique features of the CPMA (see the animation for details) allow a very high transmission efficiency of aerosol particles with the selected mass, making the CPMA attractive for a range of applications.
With a touchscreen display and a variety of interfacing options, the CPMA is self contained, with no setup required- only electrical power needs to be connected before the CPMA can be run. The CPMA can record data to a USB drive, and supports analogue and digital interfacing with a variety of CPCs, electrometers and other devices.
The CPMA classifier can easily be dissembled for cleaning by the user, the whole process taking less than 1 hour. All necessary tools are included. This makes the CPMA well suited to high concentration / longer duration experiments, and field or laboratory studies.
The CPMA uses standard sealed bearings, for maintenance free operation.
Applications of the CPMA
Aerosol mass determination for basic research
Determination of particle "fractal dimension," in conjunction with a DMA
Fundamental aerosol mass calibration standard - measurement of suspended particle mass
An alternative to a DMA for producing a monodisperse aerosol
Determination of the mixing state of atmospheric black carbon (important for climate change modelling)
Calibration of other aerosol instruments- e.g. Droplet Measurement Technologies' Single Particle Soot Photometer (SP2)
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CPMA Brochure
For more information or a list of publications relating to the CPMA, download a brochure. Please contact Cambustion for further information and prices.
Key Application Notes
| Title | Data Type | Download File | Size | Last Updated | |||||
|---|---|---|---|---|---|---|---|---|---|
| Title | Use of the Cambustion CPMA for absolute mass calibration of the Single Particle Soot Photometer (SP2) | Data Type | Application note | Download File | cpma04v02-mass-calibration-sp2.pdf | Size | 886.52 KB | Last Updated | |
| Title | Use of the Cambustion CPMA to provide a mass monodisperse aerosol | Data Type | Application note | Download File | cpma01v01-mass-monodisperse-aerosol.pdf | Size | 479.63 KB | Last Updated | |
| Title | Density and Mass Mobility Exponent Determination with the CPMA | Data Type | Application note | Download File | cpma02v01-mass-mobility-exponent.pdf | Size | 878.17 KB | Last Updated |
Support & downloads
CPMA Igor Pro toolkit for data presentation
This utility requires Igor Pro 7 for PC or Mac. It is provided free to the community with no implied warranty. Download the .zip file, unzip and open the README.txt file for details of how to use.
Data inversion algorithm for CPMA-SP2
The utility requires Igor Pro 7 for PC or Mac. It is provided free to the community with no implied warranty. Download the .zip file, unzip and open the README.txt file for details of how to use.
Aerosol Flowmeter Accessory
Cambustion also offers an aerosol flowmeter accessory for the CPMA. This offers realtime measurement of the aerosol flow (via orifice delta P) and interfaces with the CPMA for power and data output.
Contact Cambustion for more information.
CPMA Animation
The CPMA uses opposing electrical and centrifugal fields to classify particles, with the ability to vary the electrical field and rotation speed to select different particle masses.
