Working principle of metal float flowmeter

Metal float flowmeterIt is a commonly used variable area flow measurement instrument in industrial automation process control.

Working principle of metal float flowmeter: When the measured medium flows through the measuring tube float from bottom to top, a differential pressure is generated at the upper and lower ends to form an upward force. When the upward force received by the float is greater than the weight of the float immersed in the fluid, the float rises, and the annular gap area increases accordingly. The fluid flow velocity at the annular gap rapidly decreases, and the differential pressure between the upper and lower ends of the float decreases. The upward force acting on the float decreases until the upward force is balanced with the weight of the float immersed in the fluid, and the float stabilizes at a certain position. The height of the float position corresponds to the flow rate of the measured medium.

Metal float flowmeterBuilt in magnetic steel, the magnetic field changes with the movement of the float as it moves up and down with the medium.

1. On site type

The follower magnet in the local indicator is coupled with the magnet inside the float, causing rotation and driving the pointer to indicate the current flow rate through the dial.

2. Intelligent remote transmission type

The servo magnet in the intelligent indicator is coupled with the magnet inside the float to rotate, while driving the sensing magnet and pointer. The magnetic field changes are converted into electrical signals through the magnetic sensor, which are then converted into A/D conversion, digital filtering, temperature compensation, microprocessor processing, D/A output, and LCD liquid crystal display to display the instantaneous flow rate and cumulative flow rate.