What sequence is typically followed for transmitters in a control system?

In a control system, the typical sequence followed involves the sensing element detecting the controlled variable and then relaying that information to the transmitter. The controlled variable is a parameter that the system aims to regulate, such as temperature, pressure, or flow rate. The sensing element measures this variable and converts it into a signal that can be transmitted.

Thus, the sequence begins with the controlled variable being sensed by the sensing element, which then sends this information to the transmitter. The transmitter processes the signal and usually communicates it to a controller, where further actions are determined based on the readings. This sequence is fundamental to effective control within various engineering applications, ensuring that systems react appropriately to changes in their environment or operational conditions.

Understanding this sequence is crucial as it illustrates how instruments are integrated into a control loop, facilitating accurate monitoring and adjustment of the controlled variable to maintain desired operating conditions.