Condensation Particle Counter 3772
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Condensation Particle Counter Model 3772 is a compact, rugged, and full-featured instrument that detects airborne particles down to 10 nm at an aerosol flow rate of 1.0 L/min, over a concentration range from 0 to 104 particles/cm3. It is ideally suited for applications that do not require measurement of high concentrations. The successor to our Model 3010, this value-priced CPC offers features found on our top-of-the-line CPCs. Like a front-panel display, anti-spill design, water-removal capability, built-in data logging and storage with removable memory card, and USB and Ethernet ports. Plus, the 3772 has built-in Scanning Mobility Particle Sizer™ (SMPS™) spectrometer compatibility, and it includes our Aerosol Instrument Manager™ software. It requires an external vacuum pump, available separately.
Features and Benefits
- 10 nm sensitivity at 1.0 L/min aerosol flow rate
- Fast response to rapid changes in aerosol concentration (T95@ 3 sec)
- Measures particle concentrations up to 104 particles/cm3
- Butanol-friendly features, including anti-spill design, water-removal system, and improved resistance to flooding of optics
- Built-in data logging and storage capability with removable memory card
- USB and Ethernet available
- Built-in SMPS compatibility (Now standard!)
- Auto recovery from power failure
- Removable saturator wick for easy transport and maintenance
- Particle concentration, total counts, or instrument status shown on front-panel LCD display
- Basic aerosol research
- Filter and air cleaner testing
- Particle counter calibration
- Environmental monitoring
- Mobile aerosol studies
- Particle shedding and component tests
- Atmospheric research
- Climate studies
Can the CPC be operated with different carrier gases?
Yes, but only inert gases.
Is the counting efficiency for each CPC determined individually?
No. The CPC efficiency curve has been determined by testing a statistically valid number of CPCs and averaging the results to obtain the curve published in the product literature. Variation between units is very small.
What is the final droplet size after growth by condensation?
This question has been investigated, theoretically, by Ahn and Liu (1990). For the initial particle diameters of 5 and 20 nm, the computation results show a final droplet size of 11.3 and 12.3 micrometers, respectively (Ahn and Liu, 1990). Similar experimental results have also been determined.