The working principle of Coriolis flow meters is based on the Coriolis effect. The meter consists of one or more tubes that are vibrated at a certain frequency. When a fluid flows through these vibrating tubes, it induces a Coriolis force that causes a phase shift in the vibration. This phase shift is directly proportional to the mass flow rate of the fluid. Sensors detect this shift and send data to a processor that calculates the mass flow rate and fluid density.