In an automatic control loop, which component follows the transmitter in the sequence?

In an automatic control loop, the controller is typically the component that follows the transmitter in the sequence. The primary function of the transmitter is to sense and convert a physical variable (such as temperature, pressure, or flow) into a signal (often an electrical signal) that can be transmitted for further processing. This signal is then sent to the controller, which interprets the information and decides what action should be taken to maintain or adjust the system to the desired state or setpoint.

The controller evaluates the incoming signal from the transmitter against the setpoint and uses the information to generate commands to other system components (like valves or pumps) to make adjustments accordingly. This sequential function is crucial for maintaining system stability and performance in an automatic control loop.

Other options like converter, transformer, and transducer do have roles in various contexts within electrical and control systems, but in the specific sequence of an automatic control loop, after the transmitter, the controller is the next logical component, as it utilizes the data provided by the transmitter to execute control actions.