The American company BRECHTEL Manufactures the Scanning Electrical Mobility Spectrometer (SEMS) and it is an excellent source of monodisperse calibration aerosol and an accurate sizing device.
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·Flow ranges: 0.1 to 2 Ipm (aerosol);
2.5 to 10 Ipm (sheath)
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| ·Size Range: 0.01 to 2.0 micron diameter |
| ·Scan times: 15s to 10 hours |
| ·Voltage range: 0 to 6000 volts |
| ·Flow control accuracy: +/- 3% (+/-0.4% precision) |
| ·Physical Size: 41w x 46d x 67h cm (16w x 18d x 26.5h in) |
| ·Physical Weight: 35 kg (77 lb) |
| ·Power: 80 watts (without pumps) (100-230 VAC) |
| ·Complete SEMS includes pre-impactor, neutralizer body, DMA, HV & air flow control, pumps, control hardware, software, CPC, keyboard, monitor and mouse |
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·Fully automated, unattended operation
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| ·Broadest available size range |
| ·Fastest CPC time response and DMA scan times |
| ·Broad operating pressure range |
| ·Compact and lightweight CPC |
| ·Low maximum voltages |
| ·Monodisperse particle selection and scanning software with on-line inversion |
| ·Configuration, calibration, and characteristic time software utilities |
| ·Spill proof CPC w/butanol odor removal |
| ·On-line pressure, temperature and relative humidity measurements used in inversion |
| ·Pre-impactor (user specified size cut) |
| ·Neutralizer body (Po-210 strips not included) |
| ·Rack mountable |
| ·Integrated Windows®-PC with control and analisys software |
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