What is the function of a pressure sensor in a control system?

The function of a pressure sensor in a control system is to measure and report pressure changes. This is critical in many applications, such as in process control, where maintaining appropriate pressure levels is essential for safety, efficiency, and product quality. By accurately measuring pressure, the sensor provides real-time data to the control system, allowing for adjustments to be made to maintain desired conditions.

For instance, in a chemical process, too much pressure can lead to safety hazards, while too little pressure can hinder the process efficiency. Therefore, the continuous monitoring of pressure by the sensor enables the system to react quickly to fluctuations, ensuring stable operations.

While other components might control fluid flow rates or involve mechanical movement, those functions are separate from the primary role of a pressure sensor, which is specifically focused on pressure measurement. Similarly, monitoring temperature fluctuations would require a temperature sensor, not a pressure sensor. Thus, the pressure sensor's ability to accurately gauge pressure changes is vital for effective process control.