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.
Specifications.
- Flow ranges: 0.1 to 2 Ipm (aerosol); 2.5 to 10 Ipm (sheath)
- 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
Key features.
- Fully automated, unattended operation.
- 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.