How do the basic elements of a control loop work together.
What will be an ideal response?
There are five different parts of a control loop. The heart of the control loop is the controller. A controller has a set point that is set by a process technician. The controller can also show the process variable as it responds to the set point and the operating percentage on the control valve. The five elements of the control loop include; the primary element or sensor, the transmitter, controller, transducer, and final control element. The primary element works with the transmitter to measure a variable and send a signal to the controller. The controller compares the signal to the set point and makes an adjustment to the final control element, (typically a control valve) if needed by sending a signal to a transducer that converts the signal from electric to air, and then is sent to the control valve.
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