Model 3090 Engine Exhaust Particle SizerTM Spectrometer

Custom EEPS software offers advanced options for data display. These include run view, concentration histogram, and three-dimensional particleconcentration graphs.Automatic control. Microprocessor-controlled volumetricflow and barometric pressure correction enablethis spectrometer to operate under a wide range of conditionsand still maintain its calibration.Atmospheric pressure. This spectrometer operates atatmospheric pressure to facilitate the measurement ofvolatile and semivolatile particles.Electrical Mobility DiameterWhat is Unique About the EEPS Spectrometer?Building on 40 years of experience with electricalmobility techniques, TSI continues its tradition of cutting-edgeresearch instruments with a spectrometerdesigned specifically for engine exhaust particle sizing.Earlier methods of submicrometer sizing require stableaerosol and, therefore, do not meet the requirements ofengine test benches and chassis dynamometers. TheEEPS uses a unique charging system and multiple electrometersto get signals from all particle sizes simultaneously.The electrometer current data is processed inreal time with a high-performance DSP* chip insidethe instrument. This corrects for multiple charges andthe time delay between electrometers. The data is thenprocessed further to give results in 32 equally spaced(log-scale) size channels. This data is displayed on theinstrument and sent to a computer for long-term storageand display.* Digital signal processor