The Condensation Particle Counter (TSI model 3772) detects airborne particles with diameter ranging from 10 nm (counting efficiency > 50%) to 3 µm at an aerosol flow rate of 1.0 l/min, over a concentration range from 0 to 10exp4 particles/cm3.
The Condensation Particle Counter (TSI model 3772) detects airborne particles with diameter ranging from 10 nm (counting efficiency > 50%) to 3 µm at an aerosol flow rate of 1.0 l/min, over a concentration range from 0 to 10exp4 particles/cm3.
The Condensation Particle Counter (TSI model 3772) detects airborne particles with diameter ranging from 10 nm (counting efficiency > 50%) to 3 µm at an aerosol flow rate of 1.0 l/min, over a concentration range from 0 to 10exp4 particles/cm3.
Equivalent black carbon was measured from July 2005 till February 2007 by using a Particle Soot Absorption Photometer (PSAP). Starting from April 2007, black carbon is measured by a Multi Angle Absorption Photometer (MAAP, Model 5012 – Thermo Electron Corporation).
Aerosol number concentration are continuously recorded at the ICO-OV from March 2008 by using a Condensation Particle Counter (TSI model 3772).
Aerosol size distribution from 10 nm to 500 nm is measured by aDifferential Mobility Particle Sizer (DMPS) installed at ICO-OV in November 2005.
The Differential Mobility Particle Sizer (DMPS) was installed at ICO-OV in November 2005, in collaboration with Kuopio University (Finland). The system include a Differential Mobility Analyzer (DMA) to select a narrow particle size followed by a condensation particle counter (TSI model 3010) to count individual particles: by setting different voltages in the DMA, particles of different mobility are selected and their concentration are measured.
An integrating nephelometer (M9003 ECOTECH) is used to measure the aerosol scattering coefficient at 525 nm since May 2007.
The Condensation Particle Counter (TSI model 3772) was installed at ICO-OV in March 2008, calibrated from TSI Laboratories. Once per year the instrument is used for a multi-ay intercomparison with the CPC running at the "Nepal Climate Observatory - Pyramid" GAW global station.
Black carbon was measured from July 2005 till February 2007 by using a Particle Soot Absorption Photometer (PSAP).