The ______ is used to continually monitor and control a process.

• A. BPCS
• B. CRW
• C. pressure sensor
• D. temperature indicator

Answer: (A)

The Basic Process Control System is used to continually monitor and control a process. It combines sensors, controllers, and actuators to automatically compare measured process variables to desired setpoints and adjust the process in real time to keep things within safe and efficient limits. In practice, the system uses data from sensors to drive control actions that regulate valves, heaters, pumps, and other final control elements, maintaining steady operation despite disturbances.

Measurements like a pressure sensor or a temperature indicator simply provide data about the current state; they don’t by themselves control the process. A control-room interface (CRW) is mainly for monitoring and data access, whereas the BPCS is the actual system that continuously manages the process. That’s why the Basic Process Control System is the best answer.