What is the best tool to measure velocity pressure?

The Pitot tool is specifically designed to measure velocity pressure in fluid flow. It operates on the principle of dynamic pressure, capturing the difference between static and total pressure as fluid moves through the tool. This allows for accurate calculation of the fluid’s velocity based on the pressure measurements taken at the inlet of the device.

In applications where fluid dynamics is crucial, such as in HVAC systems, the Pitot tube provides essential data for airflow analysis and system balancing. Its design facilitates measuring the fluid's kinetic energy, making it ideal for determining how fast the fluid is moving.

The other options, while valuable for different purposes, do not serve the primary function of measuring velocity pressure. A manometer measures static pressure, typically in a closed or defined system, and while it can provide insights into pressure differences, it does not directly measure velocity pressure. An anemometer is primarily used to measure air speed or flow rate but does so with a different mechanism focused on air movement rather than pressure differentials. A barometer, on the other hand, measures atmospheric pressure but is not tailored for velocity measurements. Thus, the Pitot tool stands out as the best choice for measuring velocity pressure effectively.