What senses duct temperature in the system?

Temperature switches are crucial components in a system designed to sense duct temperature. Unlike gauges, which typically provide a continuous readouts, temperature switches are specifically designed to trigger an action when a specific temperature threshold is reached. This can ensure that the system responds appropriately to temperature changes, activating heating or cooling mechanisms as needed to maintain a desired environment.

Temperature switches often have set points that determine at what temperature the switch will toggle on or off, making them integral to maintaining optimal conditions within a ductwork system. While temperature gauges can provide important information, they do not directly control the system's operation based on temperature readings, which is a key function of temperature switches.

In contrast, pressure switches and humidity sensors serve different roles within a system. Pressure switches respond to changes in air pressure, and humidity sensors monitor moisture levels, neither of which directly pertains to the measurement and control of temperature within duct systems. Therefore, the focus on temperature switches as the primary sensory mechanism for duct temperature is validated by their operational functions and pivotal role in ensuring system efficiency.