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.
关键词
物理量传感器/液膜厚度测量/电导法/探点阵列/柔性印刷电路板
Key words
physical sensor/liquid film thickness measurement/conductivity method/sensors array/flexible printed circuit boards
维普
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