Magee AE33

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The J.J. Wilbur Company is proud to offer the MAGEE SCIENTIFIC AETHALOMETER® MODEL AE33. The instrument most-used in the world for the real-time measurement of aerosol Black Carbon.  The Model AE33 is the culmination of almost 40 years of experience and development.  It provides accurate data with aerosol speciation on time-scales as rapid as 1 second, using Magee’s patented DualSpot™ technology and multi-wavelength optical analysis.

The Aethalometer collects and analyzes aerosol particles continuously.  The aerosol-laden air stream is drawn through a spot on a filter tape at a measured flow rate.  Simultaneously, the tape is illuminated by light: and sensitive detectors measure the intensities of light transmitted through an un-exposed portion of the tape acting as a reference; versus the collecting spot.  As optically-absorbing material accumulates on the spot, the intensity of light transmitted through it, gradually decreases.  The decrease in light intensity from one measurement to the next is interpreted as an increase in the amount of collected material.  This increase amount is divided by the known air-flow volume to calculate the concentration.

In the new Magee Scientific Aethalometer® Model AE33, two sample spots are collected from the same input air stream with different rates of accumulation, and analyzed simultaneously.  The two results are combined mathematically to eliminate the “Filter Loading Effect” nonlinearity, and provide an accurate measurement of the aerosol concentration.

Additionally, the analysis is made at 7 optical wavelengths spanning the spectrum from 370 nm to 950 nm.  Increases of optical absorption at shorter wavelengths may be interpreted in terms of the presence of so-called “Brown” carbonaceous material, usually an indicator of emissions from biomass combustion.

Applications

  • Air Quality monitoring

  • Real-time source apportionment

  • Emissions testing

  • Climate Change research

  • Health Effects research

  • Combustion research

Product Benefits

  • Full Spectrum 7-Wavelength analysis: UV – IR, 1 Hz data rate

  • DualSpotTM Technology for compensation of “filter loading effect”

  • Real-time source apportionment

  • NIST-traceable Calibration/Validation by Neutral Density Optical kit

  • Network ready for remote management and data transfer

  • Integrates with Total Carbon Analyzer TCA08 for OC/EC analysis

  • Integrates with CO2 and meteorological sensors for additional data

  • Integrates with an external pump for High altitude BC monitoring