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New technique to measure particle size using electrostatic sensor |
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| Institution: | 1. State Key Laboratory of Chemical Engineering and Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, PR China;2. Patent Examination Cooperation Hubei Center of the Patent Office, SIPO, Wuhan 430205, PR China;3. SINOPEC Tianjin Company, Tianjin 300271, PR China;4. School of Control and Computer Engineering, North China Electric Power University, Beijing, 102206, China;5. School of Engineering and Digital Arts, University of Kent, Canterbury, Kent CT2 7NT, UK |
| Abstract: | A new technique is proposed to measure the particle mean size using an electrostatic sensor in frequency domain. This paper starts with a finite-element modeling simulator to model the induced electric charge of a ring electrode and to find the electrode sensitivity. The mathematical modeling was used to extract particle size information from the simulated signal in frequency domain. The method is applied in an experimental test where a low-noise signal conditioning was designed with a ring electrode as the electrostatic sensor. The method can be used to establish a cost effective size measurement system using electrostatic sensor. |
| Keywords: | Ring electrode FEM simulator Sensitivity Frequency spectrum Peak's frequency Signal conditioning circuit |
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