Magnetic Paddle Water Flow Switch for Water Heater 

Production Description

Flow Switch Working Principle

1. Flow Detection:

   • Mechanical Flow Switch: In a mechanical flow switch, a paddle or vane is placed inside the pipe where fluid flows. When fluid flows through the pipe, it pushes against the paddle, causing it to move.
   • Electronic Flow Switch: In electronic flow switches, sensors such as ultrasonic, magnetic, or thermal sensors detect the flow without any moving parts.

2. Switch Activation:

   • When the fluid flow reaches a certain threshold, the movement of the paddle (in a mechanical switch) or the sensor detection (in an electronic switch) causes the switch mechanism to change state. This could mean closing or opening an electrical circuit.
   • If the flow stops or drops below the set threshold, the switch mechanism will revert to its original state.

3. Triggering an Action:

   • The change in the switch mechanism triggers an action, such as sending an alert, turning on a pump, or shutting down equipment to prevent damage.

4. Feedback and Control:

   • Some flow switches provide feedback to a control system, allowing for automated adjustments to the system based on real-time flow conditions.

Basic Components:

1. Sensing Element: This is the part of the switch that interacts with the fluid flow. It can be a paddle, vane, or sensor depending on the type of flow switch.

2. Switch Mechanism: The internal mechanism that changes state (e.g., opening or closing a circuit) when the sensing element detects flow or a lack of flow.

3. Output Signal: The action triggered by the switch, such as activating an alarm, shutting down equipment, or starting a pump.

Types of Flow Switches:

• Mechanical Flow Switches: Use a physical component, like a paddle or vane, to detect flow.
• Electronic Flow Switches: Use sensors, such as ultrasonic or magnetic sensors, to detect flow without moving parts.

 Product Specifications Configuration

Product Technical Drawing

1. HVAC Systems: Ensuring proper flow in heating, ventilation, and air conditioning systems.
2. Fire Sprinkler Systems: Detecting when water flows due to sprinkler activation, triggering alarms.
3. Industrial Processes: Monitoring fluid flow in pipelines and machinery to ensure operational efficiency.
4. Cooling Systems: Protecting systems from overheating by ensuring cooling fluids are circulating.

The working principle of a flow switch is based on detecting the presence or absence of flow in a system and responding to that detection by activating or deactivating an associated device or system. This ensures that equipment operates safely and efficiently based on the actual flow conditions.