Buffer Rod Design for Measurement of Specific Gravity in the Processing of Industrial Food Batters

A low cost perspex buffer rod design for the measurement of specific gravity during the processing of industrial food batters is reported. Operation was conducted in pulsed mode using a 2.25MHz, 15mm diameter transducer and the intensity and an analytic calibration curve relating buffer rod output to specific gravity is obtained. The probe design may have application to other similar mixtures or industrial sludges in which similar material properties are observed.