What is the function of a flow switch?

A flow switch serves the critical function of detecting the presence of fluid flow within a pipeline or system. When fluid flows through the switch, it activates the switch mechanism, which can control various operations within a system, such as signaling an alarm, controlling a pump, or shutting down equipment in the event of unsafe conditions. This function is essential for ensuring that processes involving fluids operate safely and effectively by monitoring flow conditions.

In contrast, the other options describe functions that are distinct from what a flow switch does. For instance, regulating fluid pressure pertains to devices like pressure regulators, while heating fluid involves components such as heaters or boilers. A temperature sensor is specifically designed to measure the temperature of a fluid, which is different from detecting flow. Each option represents a unique function that does not pertain to the role of a flow switch in monitoring fluid dynamics.