Condensation particle counter (CPC) :Model 3775, TSI
“counts nanoparticles down to 4nm”
Purpose: To detects and count particles down to 4 nm at concentrations up to 107 particles/cm3
Principle: CPC is an optical particle counter. However, the particles are first enlarged by a condensing vapor to form easily detectable droplets. It uses a laser-diode light source and diode photodetector to collect scattered light from particles traversing through the laser.
Features and benefits:
i. Lower particle detection size limit of 4 nm
ii. Fast response to rapid changes in aerosol concentration (T95@ 4 sec)
iii. Extended single particle counting up to 5 x 104 particles/cm3 with continuous, live-time coincidence correction
iv. Smooth transition to photometric mode counting that goes up to 107 particles/cm3
v. Butanol-friendly features, including anti-spill design, water-removal system, butanol odor absorber, and improved resistance to optics flooding after tilt of instrument or inlet flow restriction
vi. Built-in data logging and storage capability with removable memory card
vii. USB and Ethernet available
viii. Built-in SMPS compatibility
ix. Auto recovery from power failure
x. Removable saturator wick for easy transport and maintenance
xi. Particle concentration, plots of concentration versus time, total counts, or instrument status shown on front-panel color LCD display
Applications:
i. Basic aerosol research
ii. Filter and air cleaner tests
iii. Combustion and engine exhaust research
iv. Health effects studies
v. Inhalation and exposure studies
vi. Atmospheric and climate studies
vii. Nanotechnology research
Specifications:
Particle size range:
Min. detectable particle (D50): 4.0 nm, verified with DMA-classified sucrose particles
Max. detectable particle: >3 μm
Particle concentration range: 0 to 50,000 particles/cm3 with continuous live-time coincidence correction
Single particle counting: Photometric; 50,000 to 10,000,000 particles/cm3
Particle concentration accuracy: ±10% at <50,000 particles/cm3; ±20% at < 10,000,000 particles/cm3
Reference: Operation and Service Manual P/N 1980527, Revision E 3775 Condensation Particle Counter, TSI, September 2007
Web links:
i. http://www.tsi.com/en-1033/models/2296/3775.aspx
ii. http://dustmonitors.ru/d/68562/d/cpc-3775r.pdf