Water-based Condensation Particle Counter 3781
Recommended Replacement
Accessories
[Product Discontinued]
Product Details
The Water-based Condensation Particle Counter 3781 (WCPC), a type of condensation particle counter (CPC), can detect airborne particles down to 6 nm in diameter. Using single particle detection with live-time coincidence correction, the 3781 covers a wide particle concentration range up to 5x105 particles/cm3. It features low cost, small size and light weight and is an ideal choice for monitoring temporal and spatial variations of various environments with multiple units. It is well-suited for a wide range of applications, including indoor air-quality measurements, environmental monitoring, atmospheric and climate-change studies, and mobile aerosol studies.
This low-cost WCPC uses water vapor* to enlarge particles for easy detection by an optical detector. It provides fast response to rapid changes in aerosol concentration, one week of unattended operation, internal data logging, and pressure-corrected aerosol flow rate. TSI Aerosol Instrument Manager® software is included for instrument control and data handling.
Features and Benefits
- Lowest cost-per-point for measuring temporal and spatial variations with multiple units
- Detects particles down to 6 nm
- Fast response to rapid changes in aerosol concentration (T95 < 2 sec)
- Measures particle concentrations up to 5x105 particles/cm3
- Uses water as condensing fluid
- One week of unattended operation
- Internal data logging with user-selectable data averaging from 1 second to 1 hour
- Feedback-controlled, pressure-corrected aerosol flow rate of 0.12 L/min
- Ease of use
Applications
- Indoor air quality measurements
- Environmental monitoring
- Atmospheric and climate research
- Mobile aerosol studies
Included Items
- Aerosol Instrument Manager® software
FAQs
Can the CPC be operated with different carrier gases?
Yes, but only inert gases.
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.