Inventory control is a key concern for food plants, dairies, and other processing facilities. In a chocolate manufacturing plant, for example, one section of the plant produces chocolate which is pumped through lines to other sections where final products are made. Flow meters are installed on the lines to monitor the amount of chocolate being produced.
However, measuring the flow of dense, viscous materials such as chocolate is a difficult task for most flowmeters. Chocolate is very thick and can clog or damage a flow metering device. It is non-conductive, and cannot be measured by electromagnetic type meters.