A Pitot gauge is used to measure what type of pressure?

A Pitot gauge is specifically designed to measure flow pressure, which reflects the dynamic pressure exerted by fluid movement, typically in air or water. This device utilizes the principle of fluid dynamics to determine the pressure of a fluid in motion by comparing the pressure from a stagnation point to the static pressure of the fluid.

When fluid flows into the Pitot tube, the gauge measures the total pressure (which is a combination of static and dynamic pressure) at that point and allows the user to calculate the flow pressure through a specific relationship. This is particularly useful in firefighting and other applications where understanding the flow of air or water is crucial for effective operation and safety.

The other types of pressure listed are measured using different instruments. Static pressure measures the pressure exerted by a fluid at rest. Gauge pressure measures pressure relative to the atmospheric pressure. Atmospheric pressure refers to the force exerted by the weight of the air in the atmosphere at a given location. Each of these has distinct applications and methods of measurement, differentiating them from what a Pitot gauge assesses.