What is the function of a concentric orifice plate?

The correct function of a concentric orifice plate is to measure flow rate. Orifice plates are used in various applications to create a differential pressure that can be correlated to the flow rate of a fluid passing through a pipe. When fluid flows through the orifice, it experiences a drop in pressure, and this pressure difference can be measured upstream and downstream of the orifice. By using the principles of fluid dynamics and the ideal gas law, the flow rate can be calculated based on this differential pressure.

The other options focus on different functions. Measuring temperature typically involves thermocouples or temperature gauges, while monitoring pressure would involve pressure transducers or gauges. Signal conversion is generally done by devices like transducers or transmitters that convert one type of signal to another during measurement processes, which is not the primary role of an orifice plate. Thus, understanding the primary purpose of the concentric orifice plate in measuring flow rate is essential for recognizing its application in fluid dynamics.