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Cloud Condensation Nuclei Counter (CCN)

The Cloud Condensation Nuclei Counter (CCN) instrument is made by Droplet Measurement Technologies.

产品描述 The 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

优势特点 ok1133诸侯快讯

技术参数 ok1133诸侯快讯

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典型案例

优势特点

Minimize size and buoyancy effects with cylindrical geometry – giving you more accurate measurements for your critical research. Get real-time control, data display, and data logging with a user-friendly virtual instrument panel. Measure quickly changing conditions in airborne and ground-based applications with fast response, uninterrupted flow, and a multi-channel, optical particle counter.

Continuous airflow and multi-channel optical counter Get supersaturation as low as 0.07% and as high as 2%, plus complete automation of up to 250 programmable and scanned supersaturation settings. Scan 250 pre-set supersaturation values in succession

技术参数

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 µm ～ 10 µm
Supersaturation range 0.07% ～ 2.0%
Time required for supersaturation change ~30 seconds for 0.2% change
Flow range Total flow: 200 – 1000 vol. cc/min (factory calibrated at 500 Vccm) Sample flow: 20 – 100 Vccm Sheath flow: 180 – 900 Vccm
Maximum number of automatically scanned supersaturation settings 250
Optical particle counter laser 660 nm，35 mW
Number of particle size bins 20
Sampling frequency 1 Hz / 1 Second
Data system interface RS-232, 9.6 Kb/sec Baud Rate (single CCN Counter) or 57.6 Kb/sec (Dual CCN Counter)
Current CCN-100: 15 A at startup, nominal 7 A during regular operation CCN-200: 25 A at startup, nominal 20 A during regular operation
Power requirements 28 VDC
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