TSI 3302A Aerosol Diluter

Description of TSI 3302A

The Aerosol Diluter Model 3302A interfaces di rectly with TSI Aerodynamic Particle Sizer® (APS™) spectrometers. It re duces particle concentrations in high-concentration aerosols, providing researchers with a representative sam ple that meets the recommended operational re quire ments for these high-resolution time-of-fl ight spectrometers.

The Aerosol Diluter Model 3302A uses a closed system of operation. It isolates a small sample of particles in an aerosol fl ow and reunites it with fi ltered, “clean” gas from the same original aerosol. This eliminates the eff ects of in troducing unknown gas characteristics such as temperature, pressure, relative humidity, or elemental makeup into the aerosol. The 3302A minimizes particle loss during the dilution process by constantly transporting the aerosol sample in a downward direction and optimizing the geometry of the fl ow path. This helps reduce particle losses due to sedimentation and turbulent deposition, and provides a sample that is highly representative of the original aerosol.

The diluter outlet mates directly with the spectrometer* inlet for on-line dilution and analysis of high-concentration aerosols. Because aerosol introduced for dilution is drawn through the Model 3302A by the spectrometer, the diluter requires no power or compressed gas.

Applications

• APS accessory

Features and Benefits

• Standard dilution ratios of 100 to 1 and 20 to 1 (two diluters may be used in tandem for ratios up to 10,000 to 1)
• Very low particle loss in the 0.5- to 10 μm size range
• Highly repeatable performance
• Original aerosol’s gas characteristics maintained during operation
• Totally self-contained design
• No outside power or compressed-gas requirements
• Durable, rugged construction
• Simple maintenance procedures
• Dual pressure gauges (indicate correct operation or signal need for maintenance)

Technical specifications of TSI 3302A