Static Tube Probe

A static tube probe, also known as a pitot-static tube or a pitot probe, is a device used to measure the static pressure and total pressure of a fluid flow. It is commonly used in aerodynamics, fluid mechanics, and HVAC systems.

The static tube probe consists of a small tube with two openings: one facing directly into the fluid flow to measure the total pressure, and another opening perpendicular to the flow to measure the static pressure. The total pressure is the sum of the static pressure and the dynamic pressure, which is the pressure due to the fluid's velocity.

By measuring the difference between the total pressure and the static pressure, the static tube probe can determine the dynamic pressure and, subsequently, the fluid velocity. This information is useful in various applications, such as calculating airspeed in aircraft, determining flow rates in pipes, or evaluating the performance of ventilation systems.

Static tube probes are typically made of metal or plastic and come in various sizes and shapes to suit different flow conditions. They are often used in conjunction with pressure transducers or manometers to accurately measure and record the pressure differentials.

When using a static tube probe, it is important to ensure proper alignment with the fluid flow and to account for any potential errors caused by factors like turbulence or blockage. Regular calibration and maintenance are also necessary to ensure accurate measurements.

Overall, static tube probes are valuable tools for measuring fluid flow parameters and are widely used in engineering and scientific applications.