A sensing element sends its signal to which of the following components?

The correct answer is a transmitter because the sensing element is responsible for detecting changes in physical parameters such as temperature, pressure, or flow within a refrigeration system. It then converts these changes into a signal that can be understood by other components in the control system.

Transmitter devices receive the signals from the sensing elements and are designed to process this information. They may amplify, modify, or convert the signal into a standardized format for further analysis or control. This is crucial for maintaining accurate system performance and ensuring that the refrigeration process operates within desired parameters.

In contrast, a recorder typically logs data for later review but does not actively process the immediate signals from sensors. An air line is part of the pneumatic system that may help in conveying signals in specific applications but does not directly receive data from sensors. A conveyor is a mechanical system used for transporting items and is unrelated to the functioning of sensing elements in control systems. Thus, the transmitter is the appropriate component that interacts directly with the output of the sensing element.