The Self Clearing Continuous Centrifuges (SCCC) are mainly used in sugar factories for the separation of sugar crystals from molasses. Variation of bed thickness in a SCCC is expected to play an important role in the quality of sugar crystals. However since baskets are normally rotating at a speed of more than 1000 rpm, measuring the bed thickness is a difficult task which is tackled as a part of this research. This paper describes and discusses the design and development of an optical method based on laser technology application to measure the bed thickness on-line on a (SCCC) which does not interfere with flow behavior in the basket