专业英语演示七电极电导率仪的研制分析.pptVIP

Conductivity meter with seven-electrode base on embedded system Reporter：William/Libin Zhou Members:Xiaojun Long Zhaoling Yang Study background Concentration of acid-washing fluid is the important factor of product quality , Conductivity of the solution is relate to the ionic concentration. Cleaning fluid including hydrogen fluoride,sulfuric acid,and surfactants.It was strong corrosion. Measuring the concentration of the ionic concentration in the real time,need high precision conductivity meter. 2 Probleams and solutions Conductivity sensor with 7 electrodes.It is better than the sensor of 3 or 4 electrodes.It can isolate current electrode and voltage electrode.reduce the electrode polarization impedance. 2 Problems and solutions Hydrogen fluoride,sulfuric acid are strong corrosion resistance. Teflon(Tetrafluoroethylene) be used as housing material.The conductive carbon fiber be used as electrode. 2 Problems and solutions In the industrial,Multielectrode sensors and real-time testing is necessary 2 Problems and solutions STM32f429GT6 which was product by STMicroelectronics, Advantage:Performance is enough,Many interfaces can be connected. STM provide lots of fundamental library Lots of materials in the internet. * April 27,2015 College of chemistry and chemical engineering A Wonderful day of the Aluminium plate Deoiling Washing acid washing Washing Passivation Washing Aluminium plate Finish cleaning Measuring the conductivity of the cleaning fluid Catalogue 1 2 3 4 Study background Problems and solutions Existing technology and research goal Analysis and discussion 1 2.1High precision measurement 2 Current excitation Voltage detection Conductive carbon fiber 2.2Material selection Material Temperture(℃) HF concentration PE 70 40% Teflon 250 70% PP 107 40% 2 A sensor was designed by national ocean technology center 2 2.3Multielectrode Sensors and testing Sensor Voltage detection cu