Model 3080-Series Electrostatic Classifier

Model 3080-Series Electrostatic Classifier
PRODUCT
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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
REVOLUTIONARY 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
SPECIFICATIONS
3080 Controller Platform
100
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
90
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)
80
70
60
50 %
40
30
20
10
-4
0.02
0.04
0.06
0.1
0.08
0.2
0.6
0.8
+4
1
+2
0.4
0
0.01
0
-2
Particle
Charge
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.
When used in tandem: Measuring small and large
changes in particle size due to coagulation, evaporation,
condensation, and chemical reactions
APPLICATIONS
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 with a TSI Model 3068A Aerosol
Electrometer: Primary size and concentration calibration of Condensation Particle Counters and other
aerosol instruments
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 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
Polydisperse
Aerosol In
Inlet
Impactor
P
Bypass Pump
Bypass
Out
Filter
Optional
Bypass
Filter
Excess
P
Orifice
Filter
DMA
Sheath
Pump
Heat Exchanger
Absolute
Pressure
Temperature
Sensor
Flowmeter
High Voltage
Power Supply
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
OPERATION
20-10,000
Volts
(-)
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.
1
Polydisperse
aerosol in
2
Differential
Mobility
Analyzer
3
4
Excess
air in
5
Inside the Model 3081
➊
❷
❸
❹
➎
MODEL 3085 NANO DMA
Polydisperse
aerosol in
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.
BIBLIOGRAPHY
Filter
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).
High-voltage
rod
Bypass
aerosol out
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
Excess
air out
Monodisperse
aerosol out
Sheath
air in
Monodisperse
aerosol out
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).
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
TO ORDER
Electrostatic Classifiers and Components
Specify
3080L
3080N
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
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
3080
Controller Platform with 3077 Aerosol Neutralizer
(DMA and 1035900 Inlet Impactor not included)
308003
Controller Platform without 3077 Aerosol Neutralizer
(DMA and 1035900 Inlet Impactor not included)
3081
Long DMA (10 to 1000 nm)
3085
Nano DMA (2 to 150 nm)
Optional Accessories
3077
Aerosol Neutralizer
1035900
Inlet Impactor
Specify
Description
3010 or 3010-S
Compact Condensation Particle Counter
3022A or 3022A-S
General-purpose Condensation Particle Counter
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
3025A or 3025A-S
Ultrafine Condensation Particle Counter
Description
3012
Aerosol Neutralizer
3032
Vacuum Pump
3062
Diffusion Dryer
3936NL25 SMPS system, includes 3080, 3081, 3085, 3025A-S,
software, and interconnecting hardware
3936N25 SMPS system, includes 3080N, 3025A-S, software, and
interconnecting hardware
3068A
Aerosol Electrometer
3074B
Filtered Air Supply
3076
Constant Output Atomizer
3936L25
SMPS system, includes 3080L, 3025A-S, software, and
interconnecting hardware
3480
Electrospray Aerosol Generator
3936L22
SMPS system, includes 3080L, 3022A-S, software, and
interconnecting hardware
SMPS system, includes 3080L, 3010-S, 3032, software,
and interconnecting hardware
3936L10
Toll Free: 1 800 677 2708
Tel: 651 490 2833
Fax: 651 490 3860
E-mail: particle@tsi.com
Web: www.tsi.com
TSI Incorporated
Particle Instruments
P.O. Box 64394
St. Paul, MN 55164-0394
USA
Shipping address:
500 Cardigan Road
Shoreview, MN 55126-3996
USA
P/N 1930097 Rev. A
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.
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: Particle-Europe@tsi.com
Web: www.tsi.com
Copyright © 2001 TSI Incorporated
Printed in U.S.A. (082001)
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