The turbidity sensor allows instant and accurate monitoring of product changeovers or CIP programs. During the phase separation of the media or during the start-up and emptying of the process, the media must be differentiated. The turbidity sensor can detect the instant a liquid media reaches a pre-defined specification, automatically switching media to its appropriate container. The benefit to a CIP system comes from having a god control pre-rinse. The turbidity sensor determines when the pre-rinse has flushed the soil from the system. If the water runs to long, you use far too much water and don’t know where your soil or high BOD comes in. If the first rinse is done correctly, the rest of the wash cycle is predictable with corresponding chemical savings. The infrared light is directed to the center of the pipe. This eliminates any potential variances caused by temperature, changes in viscosity, or build-up on the pipe. The measurements are always accurate and repeatable.
For example, here are the principles of operation of the ITM-3(Now ITM-51) turbidity sensor:
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