Which type of flow measuring device is suitable for pipes flowing fully?

The Venturi meter is particularly suitable for measuring flow in pipes that are flowing fully because of its design and operational principles. In a Venturi meter, the fluid flows through a pipe that narrows at one point, creating a pressure drop according to Bernoulli's principle. This pressure difference can be directly correlated to the flow rate of the fluid. Since this device relies on the fluid passing through a restricted area, it is inherently designed for fully flowing pipes where the fluid is under pressure.

The functionality of the Venturi meter is optimized for fully flowing conditions, ensuring that the measurements taken are both accurate and reliable.

In contrast, other devices, while they may also measure flow, are not exclusively designed for fully flowing pipes in the same efficient manner. An orifice plate can measure flow but introduces more energy loss and may not be as accurate at varying flow conditions or when not fully submerged. A flow gauge may offer a general indication of flow but lacks the precision required for specific flow measurements. Similarly, a turbo meter may be impacted by flow conditions, such as turbulence and viscosity, making it less ideal for consistent measurements in fully flowing situations compared to the Venturi meter.