How Does a Float Level Sensor Work? Everything You Need to Know
In several industrial and commercial applications, float level sensors are used to detect the liquid level in tanks, vessels, and other containers. These are straightforward and dependable gadgets that operate on the basis of buoyancy and magnetism. This article will explain in depth how these level sensors function.
Float level sensors consist of a buoyant float and a switch that is actuated by the float’s movement. A magnetic reed switch or a mechanical switch may serve as the switch.
Functioning of Float Level Sensors
These level sensors have three primary stages of operation: rise, decrease, and signal transmission.
During the rise phase, the liquid level in the tank or container rises, along with the float. When the float rises, the magnet within it is pushed toward the switch. With a magnetic reed switch, the magnet’s proximity triggers the switch, whereas in a mechanical switch, the float’s movement immediately activates the switch.
During the fall phase, the liquid level in the tank diminishes, causing the float to also fall. When the float descends, the magnet pulls away from the switch, deactivating the switch. In a mechanical switch, the movement of the float deactivates the switch immediately.
In the last step, the switch transmits a signal to the control system that indicates the liquid level in the tank or container. The signal may be a straightforward on/off signal or an analogue signal proportional to the liquid level.
Float Level Sensor Types
Vertical and horizontal sensors are available.
Vertical Float Level Sensors
Vertical sensors consist of a float that rises and falls vertically with the level of the liquid and a stem that links the float to the switch. Often utilized in tanks and vessels with a fixed vertical orientation.
Horizontal Float Level Sensors
Horizontal sensors consist of a horizontally moving float and a rod that links the float to the switch. They are frequently employed in tanks and containers with restricted vertical space.
The benefits of using Float Level Sensors
These sensors provide various benefits over other methods for measuring levels. They consist of
Straightforward and trustworthy operation
Compatible with a vast array of applications and materials
Simple installation and maintenance
No electrical supply required
In several industrial and commercial applications, float level sensors are utilized to monitor the liquid level in tanks and containers. They operate based on the concepts of buoyancy and magnetism and are available in vertical and horizontal configurations. The functioning of these sensors is straightforward and dependable, making them a popular option for level measuring. It is essential to pick the appropriate level sensor for your application and to adhere to the manufacturer’s installation and maintenance instructions.
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