An electrical actuator used to position dampers and control valves is referred to as what?

An electrical actuator designed to position dampers and control valves is known as a modulating motor. This type of motor is specifically engineered to provide precise control of processes by adjusting the position of mechanical components, such as dampers and valves, based on the control signals it receives.

Modulating motors typically operate in a continuous range rather than just being fully open or fully closed, allowing for fine adjustments that are essential in managing airflow, temperature, and pressure in various systems. They respond to feedback from the process, which helps maintain optimal operating conditions.

The other terms reference different components that serve distinct purposes in electrical and control systems. A controller coordinates overall system operations, while a relay serves as a switch activated by an electrical signal. A transformer is used to change voltage levels in electrical circuits, but none of these fulfill the specific function of positioning dampers and control valves like a modulating motor does.