• EPA: under evaluation for PM10, candidate for PM2.5, capable of measuring PM1.
• Real Time: data measured is stored in the datalogger at a rate between 1 minute and 24 hours.
• Temperature controlled: weatherproof housing stable at 22ºC (variable).
• Humidity compensation: automatic system which can be programmed by the user.
• Temperature and Humidity sensors: internal, for measurement of atmospheric conditions.
• Auto Zero: the included software carries out automatic checks of the optics, electronics, flow conditions and pump states.
• Datalogger - Memory: removable memory card for storage of data from 1 day to 1 year. Enables easy transfer of data to PC.
• Weatherproof Housing, Model 165: resistant to corrosion, made of fiberglass or stainless steel, with sturdy lock.
• Portable: 40x40x20 cm, weight 15.9 Kg.
• Double Technology: includes two methods, gravimetric reference and light dispersion.
• Optional: can present in real time, the particle counts in 15 different size channels.
• Software: powerful package compatible with Windws, allows data analysis and presentation, as well as multiple visualization and organization.
• Low maintenance: generally only once every 3 months for filter change.
• Power: through battery and/or 220V/50Hz
• Sampling System model 170M

The particle monitor carries out the measurement through the "scattering" at 90 degrees of a laser beam.

Ambient air, with various sized particles, passes through a flat beam, generated by a laser diode.

The dispersion of the beam produced by the different particles is registered by the detector and converted into electric signals. The degree of dispersion identifies the size of the particles, producing electric impulses of varied amplitudes, then the impulse height analyzer classifies and counts them by particle size.

The internal microprocessor converts these values to mass through a well established formula and adapts the data according to the categories of US-EPA PM10, PM2.5 and PM1.