AAAR 36th Annual Conference October 16 - October 20, 2017 Raleigh Convention Center Raleigh, North Carolina, USA
Abstract View
A New Electrical Particulate Matter Sensor (eM Sensor)
DI LIU, Da-Ren Chen, Virginia Commonwealth University
Abstract Number: 207 Working Group: Instrumentation and Methods
Abstract Miniature optical sensors are widely used to measure the mass concentration of particulate matter (PM) because of their simple configuration and low cost. The readout of optical PM sensors are, however, highly depended on the physical and chemical property of sampled PM. PM monitors based on the electrical principle are also available. The readouts of these electrical PM monitors are either based on an empirical signal-to-PM-mass-concentration correlation or algorithms with the assumed lognormal particle size distribution.
In this work, a new electrical PM sensor had been designed and its performance has been evaluated. The prototype in general consists of a corona-based aerosol charger and a precipitator. Different from existing electrical PM sensors, the signal of prototype eM sensor is directly proportional to the volumetric concentration of spherical particles. In addition to the overall performance evaluation, the performance of the charger and precipitator are individually studied. The detail of our experimental data collected will be presented in the conference.