Meteomodem - Aerosol Counter Sensor
This new original and versatile aerosol counting instrument doesn’t use any lens, only a laser beam and two scattering angles, respectively at 12° and 60 ° allowing to determine the concentration of aerosols (numbers of aerosols per cm3) for 19 size classes between 0.2 and 50 micrometers. The combination of these two angles allows also to identify the typology of the aerosols according to 5 main families of particles (Carbons, Droplets, Ice, Salt and Minerals). The instrument can be used for several purposes: to document the physical properties of aerosols in the lower and middle atmosphere during specific events like pollution peaks, transported sands, volcanic ashes, and/or for long-term monitoring purposes.
2 angles of measurement. The first is approximately at 12° and is almost insensitive to the nature of particles whereas the second at 60° is strongly sensitive to the refractive index of the aerosols. By combining these two measurement-angles it’s possible to retrieve accurately the size distribution and assess the main nature of the particles crossing the laser.
LOAC Version interfaced to a M10 Radiosonde allowing data transmission in real time to the ground receiver.
This solution is packed in a light gondola, less than 1 kilo.
Modular Instrument that can be used under several type of balloons for atmospheric and stratospheric soundings
- Light and compact: 300g
- Pump: from 1,3 until 3,00
- No lense: no risk of misalignment
- Measures every 10 seconds
- Automatic check every ten minutes
- Real time stray light correction applied
The LOAC is available in two versions:
- The surface version is called LOAC Recorder
- The LOAC Telemetry, the airborne version for Tropospheric and stratospheric measurements.