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The Brechtel Model 1205 GCVI is the ideal virtual impactor tool for probing the detailed properties of actual cloud condensation nuclei (CCN) inside real clouds. The GCVI was developed for long-term, unattended deployments at mountain and other sites with accessible clouds so researchers could explore aerosol-cloud interactions with the ease of ground operation. Significant anti-icing experience from decade-long aircraft inlet development was applied to the GCVI to ensure the automated wind tunnel lid would open and close reliably under most sampling conditions. With on-line cloud, rain and snow detection, the built-in software will automatically turn your system on when cloud is detected and off when the clouds disappear.
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Detailed Specs
- Peer-reviewed and characterized CVI Inlet
- Droplet cut size diameters between 7 and 15 microns
- 15 lpm total instrument sample flow
- Fully automated for long-term operation
- Laminar flow element measures sample flow and automatically adjusts to changing instrument flows
- Counter flow rate adjustable between 1 and 10 lpm to vary droplet cut size in real-time
- Automatic power on/off with easy-to-use software
- Wind tunnel lid closes automatically
- Integrated rain/snow sensor
- Tower mountable
- Integrated anti-icing systems
- Removable porous tube tip assembly
- Fully automated, hands-off operation
- Wind tunnel tested, field validated and peer-reviewed
- Designed for long-term, unattended deployment
- Easy cleaning of tip assembly
- Weather-proof rugged design
- Easy to vary droplet cut size in real-time
- Easy to use control software
- 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 counter flow 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″W x 50″H x 34″D
- Weather-proof electronics enclosure weight: 99.8 kg
- Total system weight: 131.5 kg
- Wind tunnel inlet height (tower mounted): 2 to 10 meters
- Wind tunnel flow rate: 750-1,500 lpm
- Wind tunnel throat velocity range: 50-100 m/sec
- System footprint size: 2×2 meters
- Operating temperature range: -20-35°C
- Operating pressure range: 500-1,000 mb (abs)
