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Brechtel CVI

Brechtel CVI Cloud Virtual Impactor

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The Brechtel Model 1204 CVI is a virtual impactor inlet ideal for probing the detailed properties of actual CCN inside real clouds. The CVI was developed for aircraft deployment so researchers could explore aerosol-cloud interactions across a broad spectrum of cloud types and under different air mass source region conditions. Extensively wind-tunnel tested to characterize size-dependent transmission efficiencies, the CVI inlet has been successfully deployed in multiple field campaigns where excellent agreement was found between wing-mounted cloud probes and instruments sampling the CCN from the CVI.Brechtel CVI

PARAMETER	VALUE
Droplet diameter cut size range	7-15 μm
Add flow rate range to tip	16-25 lpm
Add flow temperature range	20-45°C
Range of counterflow air flow rate	1-10 lpm
Constant air sample flow rate	15 lpm
Total air sample flow available to instruments	15 lpm
Compressor, vacuum pump and blower power (max)	2000 watts @ 230 VAC
Anti-icing power (max)	1160 watts @ 28 VDC
Other power (external laptop)	50 watts @ 115 VAC
Weather-proof enclosure size	25"wide x 50"high x 34"deep
Weather-proof electronics enclosure weight (est)	220 lb
Total system weight (est)	290 lb
Wind tunnel inlet height (tower mounted)	2 to 10 meters
Wind tunnel flow rate	1,500 lpm
Wind tunnel throat velocity range	50-100 m/sec
System footprint size (est)	2x2 meters
Operating temperature range	-20-35°C
Operating pressure range	500-1,000 mb (abs)

I want to measure	Dust [PM],Aerosols,Nano Particles
Products	Sampling & Conditioning Systems
Applications	Aerosol Research,Outdoor Air Quality

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