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I N F O R M A T I O N Model 3080-Series Electrostatic Classifiers
ince 1976, TSI Electrostatic Classifiers have been helping aerosol scientists generate and size submicrometer particles. These instruments have been used in a broad variety of aerosol research and have earned a well-deserved reputation for being highly reliable and extremely versatile. Our latest Electrostatic Classifiers – the Model 3080-series – continue that tradition, but with an expanded definition of versatility. Designed as a replacement for Models 3071 and 3071A, the current design gives you a choice of differential mobility analyzers (DMAs). The same controller platform works with both DMAs, greatly expanding your research possibilities! Collectively, our Electrostatic Classifiers produce highly monodisperse, submicrometer aerosols in the range from 2 to 1000 nanometers in diameter. The Electrostatic Classifier is most often used as an integral part of a monodisperse-aerosol generation system or a submicrometer-particle sizing system. S Choose the right DMA for your application, or switch DMAs as your measurement needs change!
In an aerosol generation system, the Electrostatic Classifier selects airborne particles of uniform size from a polydisperse source, resulting in a highly monodisperse aerosol. With TSI’s Long DMA, you’re able to classify particles in the range from 10 to 1000 nanometers in diameter. The Nano DMA offers classification from 2 to 150 nanometers. In a particle sizing system, the Electrostatic Classifier separates particles by size for high-resolution measurements of particle size distribution. When used in TSI Scanning Mobility Particle Sizer (SMPS) systems, for example, monodisperse aerosol exiting the Electrostatic Classifier passes to a Condensation Particle Counter (CPC), which measures particle number concentration. By scanning quickly through the size range from 3 to 1000 nanometers (size range varies by SMPS configuration), the SMPS measures the size distribution of the aerosol precisely. The United States Department of Commerce, National Institute of Standards and Technology (NIST) uses a TSI Long DMA for sizing 0.1-micrometer standard reference materials (Kinney et al. 1991). In fact, no other technique provides concentration and size-resolution measurements with such a high degree of accuracy. Model 3080L R EVOLUTIONARY DESIGN
The 3080-series Electrostatic Classifiers offer a modern design consisting of two basic components: a controller platform and a differential mobility analyzer (DMA). The platform (Model 3080) contains a power supply, blowers, Aerosol Neutralizer, LCD display, and all instrument controls. The DMA, however, is the heart of the Electrostatic Classifier. It selects particles of a specific size out of the aerosol sample. You have a choice of two DMAs with the 3080-series: • Long DMA (Model 3081) for the broadest particle size range, from 10 to 1000 nanometers • Nano DMA (Model 3085) for the best performance at particle sizes below 150 nanometers The DMAs may be purchased individually, or ordered already installed in a platform, as described in the “To Order” section later in this brochure. Our new Electrostatic Classifiers offer this open-platform design to allow you to easily interchange DMAs. The result is much greater flexibility when selecting an instrument for individual research needs. In addition to interchangeable differential mobility analyzers, the 3080-series instruments offer these advances over our previous design: • Recirculating flow for precise match of sheath and excess flows • Microprocessor-controlled volumetric flow with laminar flow element • Convenient front-panel design with control knob and built-in display • Electronic control of flow, voltage, particle-size, gas type, and instrument functions Choose Either a Long or Nano Differential Mobility Analyzer
3080 3081 3085 S PECIFICATIONS
3080 Controller Platform
Mode of operation: Bipolar charge neutralization and differential mobility analysis (requires installation of DMA) Flow rates Aerosol: 0 to 3 L/min, determined by external pressure or vacuum Sheath air and excess air: 1 to 20 L/min, manually selectable Air mover: 0 to 20 L/min, bypass or auxiliary flow Aerosol temperature range: 10 to 40°C (instrument must be within 3°C of aerosol temperature) Charger: Bipolar, Kr-85, 2 millicurie, half-life of 10.4 years (Model 3077 Aerosol Neutralizer* supplied with instrument) Aerosol pressure range: 1 ± 0.2 atm Front panel display: Backlit, alphanumeric, 320 × 240-pixel LCD Calibration: NIST-traceable voltage and flow standards Dimensions (LWH): 45.7 cm × 41.4 cm × 40.6 cm (18 in. × 16.3 in. × 16 in.) Weight: 17.6 kg (38.9 lb) Ports Polydisperse aerosol: 1/4-in. OD Sheath air inlet/outlet: 3/8-in. OD Bypass air inlet/outlet: 3/8-in. OD Power requirements: 85 to 260 VAC, 50/60 Hz, 200 W maximum
100 90 80 70 60 50 % 40 30 20 10 -4
0.2 0.1 0 +2
0.8 1 0.08 0.06 0.04 +4 0.6 Particle Diameter (µm) Equilibrium-charge distribution graph 3080N Electrostatic Classifier
DMA included: Nano (Model 3085) Particle type: Solids and nonvolatile liquids Particle size range (generation mode): Adjustable from 2 to 150 nm Maximum input concentration: 108 particles/cm3 at 10 nm Voltage: 10 to 10,000 VDC Flow rate Sheath air: 3 to 20 L/min Aerosol: 0.3 to 3 L/min Bypass: 0 to 15 L/min Physical measurements Nano DMA Height: 20.3 cm (8 in.) Outside diameter: 7.9 cm (3.1 in.) excluding ports Weight: 2.2 kg (4.9 lb) Polydisperse aerosol inlet: 3/8-in. OD Monodisperse aerosol outlet: 1/4-in. OD Sheath, excess, and bypass ports: 3/8-in. OD Complete instrument Dimensions (LWH): 45.7 cm × 41.4 cm × 40.6 cm (18 in. × 16.3 in. × 16 in.) Weight: 20.1 kg (44.3 lb)
*TSI is authorized by the United States Nuclear Regulatory Commission to distribute these Aerosol Neutralizers. If your location is within the United States, no other federal license is required. Check local regulations for your own protection. Neutralizers are shipped separately from other system components. Enduser name and address are required. The design of the Model 3085 Nano DMA is covered under U.S. Patent Number 6,230,572. Specifications are subject to change without notice. TSI and the TSI logo are registered trademarks of TSI Incorporated. 3080L Electrostatic Classifier
DMA included: Long (Model 3081) Particle type: Solids and nonvolatile liquids Particle size range (generation mode): Adjustable from 10 to 1000 nm Maximum input concentration: 108 particles/cm3 at 10 nm Voltage: 10 to 10,000 VDC Flow rate Sheath Air: 2 to 15 L/min Aerosol: 0.2 to 2 L/min Bypass: None Physical measurements Long DMA Height: 61 cm (24 in.) Outside diameter: 7.6 cm (3 in.) excluding ports Weight: 5.4 kg (11.8 lb) Monodisperse and polydisperse aerosol ports: 1/4-in. OD Sheath and excess air ports: 3/8-in. OD Complete instrument Dimensions (LWH): 45.7 cm × 41.4 cm × 64.3 cm (18 in. × 16.3 in. × 25.3 in.) Weight: 23.2 kg (51.2 lbs) 0.4 Particle Charge 0 0.02 A PPLICATIONS
The 3080-series classifiers are primary-standard aerosol instruments. That means their performance is based on basic physical principals, and their results are highly repeatable. Collectively, these instruments are suitable for a variety of applications. When used individually: • Aerosol research, including the study of particle transport, diffusion, coagulation, nucleation, and condensation • Particle-charge and electrical-mobility studies • Filter-media tests for filter efficiency • Enhancing the monodispersity of polystyrene latex (PSL) aerosols used to calibrate optical particle counters (The removal of residue particles and multiplets from the nebulized PSL enhances monodispersity.) When used in tandem: Measuring small and large changes in particle size due to coagulation, evaporation, condensation, and chemical reactions When used with a TSI Model 3068A Aerosol Electrometer: Primary size and concentration calibration of Condensation Particle Counters and other aerosol instruments When used with a TSI Condensation Particle Counter: High-resolution sizing of submicrometer particles The availability of two DMAs allows even further specialization. The Model 3081 Long DMA is intended for wide usage as a classifier of large particles up to 1000 nanometers in diameter. The Model 3085 Nano DMA is designed for high-resolution sizing of ultrafine particles down to 2 nanometers in diameter. Its short length and bypass inlet flow minimizes diffusional broadening and particle loss, which is a critical re- MODEL 3080-SERIES ELECTROSTATIC CLASSIFIERS Controller Platform
Control Knob Display Kr 85 Aerosol Neutralizer Inlet Impactor P Bypass Pump Polydisperse Aerosol In Bypass Out Optional Bypass P Filter Orifice Filter Filter Sheath Pump Heat Exchanger Temperature Sensor Flowmeter High Voltage Power Supply Absolute Pressure Excess DMA Sheath Monodisperse Aerosol Out quirement for classifying particles smaller than 20 nanometers. Remember, the DMAs are available individually, or preinstalled in a controller platform. See “To Order” for details. MODEL 3081 LONG DMA
Sheath air in Variable high-voltage supply 20-10,000 Volts (-) OPERATION
Polydisperse, submicrometer aerosol passes through a radioactive bipolar charger, establishing a bipolar equilibrium charge level on the particles. Nearly all particles from 20 to 300 nanometers in diameter receive either a single positive, single negative, or zero charge. The particles then enter the differential mobility analyzer (DMA) and are separated according to their electrical mobility. This parameter is inversely related to particle size. An electric field inside the DMA influences the flow trajectory of the charged particles. The DMA contains an inner cylinder that is connected to a negative power supply (0 to 10,000 VDC). This charged element provides a precise negative potential. Particles with negative charge are repelled towards and deposited on the outer wall. Particles with a neutral charge exit with the excess air. Particles with a positive charge move rapidly towards the negatively charged element. Only particles within a narrow range of electrical mobility have the correct trajectory to pass through an open slit near the DMA exit.
MODEL 3085 NANO DMA
Polydisperse aerosol in 1
Polydisperse aerosol in 2
Differential Mobility Analyzer 3 4 Excess air in 5 Inside the Model 3081
❷ ❸ ❹ Monodisperse aerosol out Charged polydisperse aerosol enters the DMA. The center rod attracts positive particles. The center rod repels negative particles to the wall. Uncharged particles exit with the excess air. Positively charged particles within a narrow mobility range exit as monodisperse aerosol. Filter BIBLIOGRAPHY
Chen D-R, DYH Pui, D Hummes, H Fissan, FR Quant, and GJ Sem, Design and Evaluation of a Nanometer Aerosol Differential Mobility Analyzer (Nano-DMA), J. Aerosol Sci. 29(5):497-509 (1998). Kinney PK, DYH Pui, GW Mulholland, and NP Bryner, Use of the Electrostatic Classification Method to Size 0.1-µm SRM Particles—a Feasibility Study, J. Res. Natl. Inst. Stand. Technol. 96(2):147 (1991). TSI paper A74
Monodisperse aerosol out High-voltage rod Bypass aerosol out Excess air out Sheath air in Pourprix M and J Daval, Electrostatic Precipitation of Aerosols on Wafers, a New Mobility Spectrometer, Proceedings of the 3rd International Aerosol Conference 2:797-800 (1990). TO ORDER
Electrostatic Classifiers and Components
Specify 3080L Description Electrostatic Classifier, includes 3080 Controller Platform (with 3077 Aerosol Neutralizer), 3081 Long DMA, and 1035900 Inlet Impactor Electrostatic Classifier, includes 3080 Controller Platform (with 3077 Aerosol Neutralizer), 3085 Nano DMA, and 1035900 Inlet Impactor Controller Platform with 3077 Aerosol Neutralizer (DMA and 1035900 Inlet Impactor not included) Controller Platform without 3077 Aerosol Neutralizer (DMA and 1035900 Inlet Impactor not included) Long DMA (10 to 1000 nm) Nano DMA (2 to 150 nm) Aerosol Neutralizer Inlet Impactor The Submicrometer Monodisperse Aerosol Generation System includes an Electrostatic Classifier with a Long DMA. See Model 3940 Submicrometer Monodisperse Aerosol Generation System product information sheet for additional information. Specify Description 3940 Submicrometer Monodisperse Aerosol Generation System, includes 3080L, 3012, 3062, 3076, and 3074B The Nanometer Monodisperse Aerosol Generation System includes an Electrostatic Classifier with a Nano DMA. Contact your TSI representative for additional information. Specify Description 3942 Nanometer Monodisperse Aerosol Generation System, includes 3080N, 3012, 3062, 3480, and 3074B 3080N 3080 308003 3081 3085 3077 1035900 Optional Accessories
Specify Description 3010 or 3010-S Compact Condensation Particle Counter 3022A or 3022A-S General-purpose Condensation Particle Counter 3025A or 3025A-S Ultrafine Condensation Particle Counter 3012 3032 3062 3068A 3074B 3076 3480 Aerosol Neutralizer Vacuum Pump Diffusion Dryer Aerosol Electrometer Filtered Air Supply Constant Output Atomizer Electrospray Aerosol Generator Systems
The Scanning Mobility Particle Sizer (SMPS) is available in the following configurations. All include an Electrostatic Classifier, Aerosol Neutralizer, Condensation Particle Counter (CPC), and SMPS software. See Model 3936-Series Scanning Mobility Particle Sizers product information sheet for additional information. Specify Description 3936NL25 SMPS system, includes 3080, 3081, 3085, 3025A-S, software, and interconnecting hardware 3936N25 SMPS system, includes 3080N, 3025A-S, software, and interconnecting hardware 3936L25 3936L22 3936L10 SMPS system, includes 3080L, 3025A-S, software, and interconnecting hardware SMPS system, includes 3080L, 3022A-S, software, and interconnecting hardware SMPS system, includes 3080L, 3010-S, 3032, software, and interconnecting hardware These optional accessories are available in several system configurations described above. Other configurations are possible. Ask your TSI representative about recommended Electrostatic Classifier / Condensation Particle Counter combinations. When ordering an Electrostatic Classifier containing an Aerosol Neutralizer, or systems containing such an Electrostatic Classifier, the name and address of the end user must be provided to comply with nuclear regulatory requirements. TSI Incorporated Particle Instruments P.O. Box 64394 St. Paul, MN 55164-0394 USA Shipping address: 500 Cardigan Road Shoreview, MN 55126-3996 USA Toll Free: 1 800 677 2708 Tel: 651 490 2833 Fax: 651 490 3860 E-mail: [email protected] Web: www.tsi.com Europe: For current information TSI GmbH Neuköllner Strasse 4 www.tsi.com D-52068 Aachen Germany Tel: +49 241 523030 Fax: +49 241 5230349 E-mail: [email protected] Web: www.tsi.com P/N 1930097 Rev. A Copyright © 2001 TSI Incorporated Printed in U.S.A. (082001) ...
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This note was uploaded on 09/11/2011 for the course ENV 6130 taught by Professor Wu during the Spring '08 term at University of Florida.
- Spring '08