Purpose: To measure and indicate the presence or absence of flow, or to signal when the flow rate exceeds or falls below a setpoint. Components: Typically includes a sensing element (paddle, vane, or turbine), a mechanical or electronic switch, and a housing. Applications: Widely used in industries like water treatment, HVAC, chemical processing, and food processing.
Purpose: To control heating or cooling systems based on temperature variations.
Components: Typically includes a temperature sensing element (thermocouple, thermistor, or bimetallic strip) and a switching mechanism.
Applications: Found in homes, cars, industrial processes, and many other applications.