Design and Validation of Surface Array Conductivity Sensors for Thin Liquid Film Thickness Measurement
Liquid film thickness is an important parameter to study the development and evolution of falling film,the current mainstream film thickness probe on the market is mainly based on the principle of point detection,and it can not satisfy the needs of surface thick-ness measurement in liquid film development.Based on the range of falling film thickness,a conductance coaxial ring array sensor IS in-dependently designed based on flexible printed circuit board.The successfully produced sensor has 3×4 coaxial ring detection units in a 42 mm×57 mm array area,the unit spacing is 15 mm,and it achieves liquid film thickness measurement in the range of 0.3 mm～3 mm with the error of measuring resistance conversion thickness within 10%,which can satisfy the needs of the surface thickness measure-ment of thin liquid film.
physical sensorliquid film thickness measurementconductivity methodsensors arrayflexible printed circuit boards
万方数据
维普
