The principle

A Coriolis meter vibrates one or two measuring tubes at their natural frequency. When fluid flows through the tubes, the Coriolis force twists them slightly. Sensors at the inlet and outlet detect the delay between their motions, and that phase shift is directly proportional to mass flow.

Why it is different

Because the measurement is based on mass, it does not depend on density, viscosity, temperature or pressure. The same meter also reads the tube’s resonant frequency, which gives density, and a temperature sensor on the tube completes the picture.

Where it fits

Choose Coriolis for custody transfer, batching, dosing and any duty where mass matters more than volume. For simple volumetric measurement of conductive liquids an electromagnetic meter is usually more economical.