A paddle flow switch manufacturer tells you that a flow switch, sometimes called a flow sensor or flow indicator, is a device used to monitor the flow of liquid, air or other gaseous media through a pipe, system or circuit.

The paddle flow switch manufacturer tells you that in order to better understand the working principle and function of the flow switch, we need to briefly introduce the core components of common and typical flow switches.
The paddle flow switch manufacturer tells you that most flow switches contain a paddle or some type of magnetic trigger (the main device), which is connected to the circuit and placed in the pipe through which the liquid or gas passes, and when the medium flows through the paddle flow switch As the blade changes, the position of the paddle changes and a signal reading is sent back to the sensor in the secondary section.
The sensor takes the raw signal from the blade and passes it to the transmitter in a readable format. The transmitter, in turn, measures that reading based on a predefined set of parameters and performs whatever signal or action is required to adjust the behavior of components and mechanisms elsewhere.
In this way, flow switches are able to monitor, report and control the flow rate of liquids or gases through specific parts of the system or the entire system, ensuring that flow remains within these preset parameters. The paddle flow switch manufacturer tells you that if the rate exceeds or falls below the desired value, it can instantly trigger a series of actions such as activating an alarm, turning on the pump, diverting flow, shutting down system components. What the switch does will depend entirely on the type of switch and what it is designed for.
Not all flow switches have physical flaps. Ultrasonic and other non-intrusive flow switches are also common, and they work by bouncing the signal back from the medium being monitored. The manufacturer of paddle flow switch tells you that this type of flow switch is often used for liquid monitoring under special conditions such as corrosiveness or more impurities that easily damage the contact parts because there are no movable parts.