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RELATED EVENTSRELATED NEWSTSI Instruments in Laser Printer Emissions Research TSI Helps Investigate Air Quality at Beijing 2008 Olympics TSI Particle Instruments Offers QualityGuard™ Service Agreements
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SCANNING MOBILITY PARTICLE SIZER™ SPECTROMETERS
Scanning Mobility Particle Sizer™ (SMPS) spectrometers are the standard by which all submicrometer particle sizers are compared. They employ a continuous, fast-scanning technique to provide high-resolution measurements quickly.
Our Series 3936 systems feature a versatile Series 3080 Electrostatic Classifier and your choice of Condensation Particle Counter (CPC). The end result is unmatched flexibility due to the many configurations possible. Collectively, SMPS systems measure particles from 2.5 to 1000 nm and display data using up to 167 actual size channels (up to 64 channels per decade).
The Model 3034 Scanning Mobility Particle Sizer (SMPS) spectrometer is a simple alternative to multicomponent systems. It houses an Electrostatic Classifier and a Condensation Particle Counter in the same cabinet. The integrated design means easy transport and quick set up. The Model 3034 SMPS measures aerosol particles in the size range from 10 to 487 nm. It displays data using 54 size channels (32 channels per decade).
TSI offers many choices for applications involving submicrometer particle sizing. See detailed descriptions for Series 3936 systems and Model 3034.
Features and Benefits
- High-resolution measurements of ultrafine particles
- Component and single-box options for specific measurement needs
- Choice of CPC and DMA (Series 3936 systems only) provides the ultimate in sizing flexibility
Applications
- Basic aerosol research
- Nanotechnology research
- Atmospheric and climate studies
- Indoor-air-quality measurements
- Pollution studies
- Smog chamber evaluations
- Aerosol dynamics
- Combustion and engine exhaust studies
- Materials synthesis
- Filter efficiency testing
- Nucleation/condensation studies
- Inhalation toxicology studies
- Characterization of sprays, powders, and other generated aerosols
- Mobile aerosol studies
- Long-term unattended environmental monitoring
Included Items
- Aerosol Instrument Manager® software
To request more information about TSI's Scanning Mobility Particle Sizer (SMPS™) spectrometer, including a price quotation, a system demo, product literature, etc. click here.
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The Model 3034 Scanning Mobility Particle Sizer™ (SMPS™) spectrometer measures aerosol particles in the range from 10 to 487 nm. It displays data using 54 size channels (32 channels per decade) for high-resolution size information. |
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Series 3936 Scanning Mobility Particle Sizer™ (SMPS) spectrometers measure particles from 0.0025 to 1.0 µm. They display data using up to 167 actual size channels (up to 64 channels per decade) for the highest resolution and accuracy available. |
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The Model 3031200 Environmental Sampling System provides representative sampling and proper conditioning of ambient submicrometer aerosol for accurate size distribution and particle number concentration. |
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TSI Flow Splitter directs an aerosol sample to as many as four destinations at once. |
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The Low-Flow Thermodenuder removes precursors and volatile particles from an aerosol sample for subsequent measurement of dry particle size. |
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The Nanometer Aerosol Sampler (NAS) allows you to sample charged particles, like those from the output of a Differential Mobility Analyzer (DMA), onto sample substrates for further analysis. |
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The TSI Rotating Disk Thermodiluter is highly regarded in the field of particle emission measurement, especially for sampling, diluting and conditioning exhaust from diesel and spark-ignition engines. |
BROCHURESCATALOGSSPEC SHEETSSERVICE INFORMATION
APPLICATION NOTESBIBLIOGRAPHYMANUALSSERVICE PROCEDURESSTANDARD REPLACEMENT PARTSFREQUENTLY ASKED QUESTIONSshow/hide all answers
- Can the SMPS measure aerosols at different temperatures and pressures?
Temperature and pressure affect the mean-free-path in air which will affect the electrical mobility of the particles. Charging of the aerosol will also be effected. We have not characterized effects of pressure and temperature deviating from standard conditions.
- Can the SMPS measure particles in a gaseous medium other than air?
Presently, the SMPS program only supports the gas and charging parameters for air (or nitrogen).
- Do I need a 10-to-1 flow ratio between the aerosol flow and the sheath air flow?
The SMPS program allows for flow ratios other then 10 to 1. For most applications, the recommended flow ratio is 10 to 1. High flow ratios will give better size resolution but lower the particle count statistics. This may be useful when measuring the exact size of monodisperse aerosols. Lower flow ratios will improve the counting statistics, but decrease the effective size resolution. This is useful for filter testing when measuring downstream of a high-efficiency filter. Flow ratios that differ too much from 10 to 1 may cause turbulence in the DMA and degrade the sizing resolution.
- Does the SMPS software collect particle concentration data on both the up and down voltage scans?
Raw particle count data from the CPC is collected on both up and down scans. All calculated particle size distributions are based only on the up-scan data. Sample data that is saved to a file from the SMPS contains raw data from the up scan (measurement scan) and the down scan. We save count data from the down scans as well as the up scan in case the customer wants to make changes in the delay time.
- How is the charge distribution determined?
The SMPS program uses a table of charge probabilities named CHARGE.DAT. The table contains 162 particle size channels with charge probabilities up to 10 positive charges. The table was generated based on the work of Alfred Wiedensohler1.
- How is the SMPS calibrated?
Complete SMPS systems purchased from TSI are set up and compared to standard instruments at TSI to verify correct operation. The CPC, Electrostatic Classifier, and impactor are components of the SMPS and are calibrated independently.
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