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

1) pressure sensor
2) BPCS
3) temperature indicator
4) CRW

Answer :

The 2) Basic Process Control System (BPCS) is the correct answer, which is a system that uses sensors and controllers, such as thermocouples or RTDs, to continuously monitor and control process variables like temperature and pressure in order to maintain a desired set-point.

The device used to continually monitor and control a process is called the 2) Basic Process Control System (BPCS). In control systems engineering, BPCS is a system configured with various instruments such as sensors and controllers to continuously control process variables.

For instance, temperature control in industrial processes often employs sensors like thermocouples or Resistance Temperature Detectors (RTDs) which provide electrical signals to a computer indicating the temperature. The computer then adjusts the process variables, such as the flow of a fluid, to maintain the desired temperature set-point.

A BPCS is essential in operating environments like a Continuous Stirred Tank Reactor (CSTR) as it controls various parameters through error-based control methods, including the PID (Proportional, Integral, Derivative) controllers. These systems compare actual conditions, such as temperature or pressure, with desired set-points and adjust accordingly to maintain process stability and efficiency.

Sensor selection is critical for ensuring accurate and long-lasting performance of the BPCS, taking into account factors like pressure range and environmental conditions. A proper selection and positioning of sensors like temperature or pressure sensors are necessary to monitor and control critical variables effectively.

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