Abstract

The light transmission fluctuation method is a simple and useful method for in situ and in-line measurement of particle size and concentration. To accomplish the measurement, it is necessary to know the intensity of incident light or background signal I0. However, measuring I0 during in-line applications is hard. In this Letter, an algorithm is proposed to indirectly measure I0 based on the variation of transmitted light signals. Experiments have been carried out to verify the algorithm and the maximum deviation between premeasured I0 and indirectly measured I0′ is less than 2.5%.

© 2011 Optical Society of America

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