Which type of flow measuring device can be installed in a pipe flowing full?

The Venturi device is a well-known flow measuring instrument that is designed to operate in a full-pipe flow condition. It utilizes the principle of Bernoulli's equation, where the fluid velocity increases as the fluid passes through a tapered section of the pipe, resulting in a pressure drop. By measuring the pressure before and after the Venturi constriction, the flow rate can be calculated. Since it is specifically designed to work with fluids flowing at full capacity, its design ensures accurate measurement without experiencing issues associated with air pockets or turbulence that might affect meters intended for other types of flow conditions.

While other options such as the orifice plate, ultrasonic flowmeter, and magnetic flowmeter can also function effectively in full flow applications, the Venturi is distinctive in its design and operational principles that specifically focus on full-pipe flow conditions, making it an optimal choice for such scenarios.