In a control system, what is the function of a sensing element?

In a control system, the primary function of a sensing element is to measure a process variable. This could include parameters such as temperature, pressure, flow rate, or level, depending on the specific application of the control system. The sensing element converts the physical quantity being measured into a signal that can be interpreted by the control system.

This measurement is crucial because it provides the necessary feedback for the control system to assess the current state of the process. The information gathered by the sensing element enables the control algorithms to make informed decisions and adjustments to maintain the desired operating conditions. Accurate measurement is essential for effective and responsive control, ensuring that the system operates as intended.

In contrast, other options relate to different aspects of a control system's operation. Receiving the control signal pertains to an actuator or controller component, executing control actions involves the actuators or controllers responding to the input, and displaying system status is typically the role of a display or user interface, which presents information to operators. These functions complement the role of the sensing element but do not describe its primary purpose.