HTabsOverviewThe CCN-100/200 measures the count and size of individual aerosol particles that can form into cloud droplets. Its fast response time allows use in either airborne or ground-based stations. The CCN is available in single-column (CCN-100) or dual-column (CCN-200) versions. The CCN-100 is used for measurements of a single supersaturation, whereas the CCN-200 enables the user to measure two supersaturations simultaneously – a critical capability for droplet activation kinetics of aerosols and split sample experiments comparing the response of aerosols. Key Features One-of-a-kind measurements Enable climate models and accurate predictions of climate change with the CCN-100/200 – the only instrument of its kind to measure CCN concentrations in space and time. Responsive and versatile Measure quickly changing conditions in airborne and ground-based applications with fast response, uninterrupted flow, and a multi-channel, optical particle counter. Advanced supersaturation range Get supersaturation as low as 0.07% and as high as 2%, plus complete automation of up to 250 programmable and scanned supersaturation settings. Improved accuracy Minimize size and buoyancy effects with cylindrical geometry – giving you more accurate measurements for your critical research. Onboard computer Get real-time control, data display, and data logging with a user-friendly virtual instrument panel. CCN Brochure.pdf SpecificationSpecification: Parameter Specification Aerosol Medium Air, 5 - 40 °C (41 - 104°F) Number Concentration Range Depends on supersaturation: 6,000 particles/sec at supersaturations below 0.2% 2,000 particles/sec at supersaturations above 0.3% Measured Particle Size Range (from OPC, after supersaturation) 0.75 – 10 µm Number of Particle Size Bins 20 Sampling Frequency 1 Hz / 1 Second Supersaturation Range 0.07% - 2.0% Time Required for Supersaturation Change ~30 seconds for 0.2% change Maximum Number of Automatically Scanned Supersaturation Settings 250 Optical Particle Counter Laser 660 nm, 35 mW Flow Range Total flow: 200 – 1000 vol. cc/min (factory calibrated at 500 Vccm) Sample flow: 20 – 100 Vccm Sheath flow: 180 – 900 Vccm Flow Control Total flow is adjustable from within CCN Counter software Sample/Sheath flow ratio is adjustable using manual metering valve Pump Solenoid pumps for water; diaphragm pump for air Side Panel Connections System power switch LED for overall system power Watchdog light Air vents Inlet and exhaust valves 28 VDC pin connector Ethernet connection USB connection Mouse and keyboard connections Touchscreen connection Video connection Serial data port LED power connection Computer System On-board Intel® Celeron® 1 GHz processor 512 MB RAM 80 GB hard drive for data storage User interface via standard keyboard and monitor (included) Data System Interface RS-232, 9.6 Kb/sec Baud Rate (single CCN Counter) or 57.6 Kb/sec (Dual CCN Counter) Features for Easy Aircraft Mounting Rack-mount compatible Center of gravity located 15.5” from bottom of back base plate Instrument plumbing system sealed for operation on pressurized aircraft Power Requirements 28 VDC Current CCN-100: 15 A at startup, nominal 7 A during regular operationCCN-200: 25 A at startup, nominal 20 A during regular operation Size (for both CCN-100 and 200) For lab use (with frame): 35.0” H x 19.3” W x 15.6” D / 88.9 cm H x 48.9 cm W x 39.7 cm D For aircraft use (without frame): 32.0”H x 15.25” W x 10.6 D / 81.3 cm H x 38.7 cm W x 27 cm D Weight CCN-100: For lab use (with frame): 35.2 kg / 77.5 lb For aircraft use (without frame): 29.0 kg / 64.0 lb CCN-200: For lab use (with frame): 50 kg / 110 lb For aircraft use (without frame): 43.8 kg / 96.5 lb Environmental Operating Conditions Temperature: 5 – 40°C (41 – 104 °F)RH: 0 – 100% RH non-condensing Further InfoDocuments: CCN Brochure.pdf
