Design and construction of an optical sensor for liquid Level control

Author(s):

M.Razani , H. Golnabi , M. H. Dabbaghian , R. S. Dariani , N. Vaziri , A. Hojabri

Abstract:
Design and construction of an optical sensor for liquid level control is reported here. Operation of this sensor is based on the intensity modulation. The modulated light intensity is detected by total internal reflection in a prism. The variation of output intensity is measured by an optical detector and is monitored by a digital voltmeter. This optical fiber sensor is used for water level measurement in this experiment. For a white light source, the output voltage in the case of low water level is equal to 480 mV and when the water level reaches to prism reduced to 8 mV. Height measurement accuracy in this system is about ±1mm.
Language:
Persian
Published:
Journal of Science, Volume:23 Issue: 2, 2011
Page:
16
https://www.magiran.com/p977072