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The SEMS is a scanning mobility spectrometer that allows rapid aerosol number size distribution measurements. Scan times of just a few seconds are possible. It also serves as a monodisperse particle generator to calibrate other particle instruments. The SEMS is an easy-to-use and field-ready tool. With an intuitive software interface, the SEMS is easy to configure with quick data post-processing capabilities. Plotting and analysis tools allow you to plot and analyse your data during acquisition. With the broadest size range commercially available, the SEMS can satisfy more scientific needs and adapt to changing research priorities.
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Detailed Specs
- Broad operating pressure range allows use on aircraft – tested to 200 mb
- Fully automated, unattended operation
- Monodisperse particle selection and scanning software with on-line inversion
- Off-line inversion software for data re-processing when needed
- Configuration, calibration, and characteristic time software utilities
- Selectable particle diameter size range: 0.005—1.0 or 0.01 – 2.0 μm NOTE¹
- Size resolution (set by Qaer/Qsheath): Variable (28:1 typical)
- Scan time range: 5 secs to > 1 hour
- Sheath flow range: 2.5-12 lpm
- Aerosol sample flow range: 0.1 to 2.0 lpm
- Particle concentration range: 1-10⁸ /cm³
- Range of high voltage: 0-6,000 Volts
- Pre-impactor cut size diameter: 0.5 or 1.0 μm
- Communications: Ethernet and RS-232
- CPC working fluid: 1-Butanol
- Operating Temperature: 15-35°C
- Operating Pressure: 200-1,000 mb NOTE²
- Physical size: 48 x 33 x 56 cm
- Weight : 16 kg
- Power usage: 80 watts (85 to 230 VAC)
Notes:
- 2 micron sizing with SEMS-DMA-UG option.
- Only with SEMS-ExP options.
