Annubar flow meter are sometimes referred to as Averaging pitots and contain multiple pressure tappings to average the flow. As soon as the pressure recovers above the vapour pressure the bubbles impode. Coriolis Principle Tek Trol A vortex meter primary flow element produces a series of oscillations of pressure. . The averaging pitot tube is inserted across the pipe as shown below. For example an orifice plate produces a pressure drop that is a function of the square of the volume rate of flow through the orifice. With Coriolis mass flowmeters the fluid runs through U-shaped tubes vibrating in an angular harmonic oscillation. Coriolis flow meters are very accurate better than 01 with a turndown rate of more than a. Consequently liquids near boiling point could introduced cavitation as the pressure across the meter drops below the vapour pressure of the liquid forming of vapour bubbles. Meanwhile from the measurement funct