Abstract: A Coriolis mass flow meter apparatus for determining the mass flow rates of fluids passed through twin flow tubes which are oscillated by a driver in a tuning fork fashion so as to be distorted by the mass flow rate of the fluid passing through the tubes with the distortion measured by sensors; where, sensor and driver components are mounted to each of the flow tubes so that the masses of the components and the structures used to mount the components to the flow tubes results in a center of gravity which is located on the axes about which each flow tube is distorted by generated Coriolis forces.

Abstract: A Coriolis mass flow meter apparatus, suitable for high temperature applications, wherein a preferred embodiment of the apparatus is comprised of two cantilever-mounted U-shaped flow tubes sinusoidally driven as the tines of a tuning fork by a drive mechanism mounted on standoff means attached to the flow conduits, with flow rates measured by velocity sensors mounted on suspension bars attached to the flow conduits. The flow conduits are encased in an inner thermal isolation partition wall structure containing apertures through which the suspension bars and standoff means protrude. A vented outer casing encloses the flow tube and partition wall structure, with insulation provided between the outer casing and the partition wall. Thermal control means are provided inside the space enclosed by the partition wall means. Gas cooling means are provided for the velocity sensors and drive mechanism. Flexible double wire structure means are provided to transmit the velocity sensor signals.