Solids flowmeter is an impact-weighing device. It measures the mass flow rate of a free-flowing, continuous stream of dry solids material. The principle of operation is simple. The material produces a mechanical deflection as it strikes the flow meter's sensing plate. The flowmeter converts the deflection into an electrical signal that feeds into an accompanying integrator, which instantaneously displays the flow rate and integrated total weight. It has proven to be a convenient, accurate, and dust-tight alternative for continuous in-line weighing. By measuring the impact of material flow, these alternatives to conventional weighing devices provide accurate, continuous measurement of free-flowing solids.