A liquid level sensor comprising a float (1), a magnet (2), a bracket (3), a linear output Hall element sensor (4), an amplifying circuit, and a Hall element sensor (4) disposed at an upper portion of the bracket (3) The magnet (2) is disposed below the Hall element sensor (4), and the magnet (2) is coupled to the float (1); the output of the Hall element sensor (4) is coupled to the input of the display meter via an amplifying circuit. The Hall element sensor is a linear output Hall element sensor. Therefore, the liquid level sensor output has good linearity, high measurement accuracy and high resolution.
The magnetostrictive liquid level sensor is composed of a transmitter, a sensor and a float. The inside of the transmitter housing (3) is provided with a circuit board bracket (8), a circuit board (22), an insulating board (28), and an upper end. The damping platen (29), the upper end damping (16) and the circuit board bracket (8) are fixed together, the steel string (15) passes through the middle of the upper end damping (16), and the steel string (15) is pressed against the piezoelectric ceramic (17) The piezoelectric ceramic (17) is connected to the circuit board (22) through a lead wire, and the outer tube (6) of the sensor has an aluminum groove (7), and the electrical pulse circuit lead (19) is passed through the aluminum groove (7) and the circuit board. (22) connected, the outer tube of the sensor (6) has an insulating sleeve (12), a lower end damping (18), a steel string tensioning spring (11) and a steel string lower end fixed shaft (10), and a sensor outer tube (6) ) A float (23, 27) with a sliding connection is placed in the middle. The utility model has the advantages of simple process, high production efficiency, stable and reliable performance, low cost and improved product competitiveness.
[Claim] A magnetostrictive liquid level sensor consisting of a transmitter, a sensor and a float, characterized in that the upper end of the transmitter housing (3) is provided with a power supply and a signal interface (21), a housing ( 3) The circuit board bracket (8) and the circuit board bracket (8) are fixedly connected to the lower end of the transmitter housing (3), and the circuit board (22) is fixed on the circuit board bracket (8), and the upper end steel string The fixing screw (9) fixes the insulating plate (28), the circuit board bracket (8) and the steel string (15) together, and the upper end damping plate (29), the upper end damping (16) and the circuit board bracket (8) are fixed together. The steel string (15) passes through the middle of the upper end damping (16), and the steel string (15) is pressed against the piezoelectric ceramic (17). One end of the piezoelectric ceramic (17) is fixedly connected to the insulating plate (28), and the other end is fixed. Is the free end, and the steel string (15) is in contact with the free end of the piezoelectric ceramic (17), the piezoelectric ceramic (17) is connected to the circuit board (22) through the lead wire, and the upper end of the sensor outer tube (6) is sealed by the sealing mechanism (5) and the sealing ring (14) is sealingly connected with the lower end of the transmitter housing (3), the sensor outer tube (6) has an aluminum slot (7), and the electric pulse circuit lead (19) is traversed through the aluminum slot ( 7) connected to the circuit board (22), passed The outer tube (6) has an insulating sleeve (12) at the lower end, and the insulating sleeve (12) is provided with a lower end damping (18), a steel string tensioning spring (11) and a steel string lower end fixed shaft (10), a steel string (15) From the lower end of the damping (18) through the fixed connection with the lower end of the steel string fixed shaft (10), the lower end of the sensor outer tube (6) is fixed with a float ring (13), and the outer tube (6) of the sensor is fitted with a sliding Connected floats (23, 27).
Concerned about surprises
Label: level sensor free end board linearity damping
Previous: Rain sensor in the car Next: The principle of compressed air sensor
Steel Measuring Tape,Tape Line Measure,Magnet Tape Measure,Rubber Tape Line Measure
Shangqiu Hengli Measuring Tools Co.,Ltd , https://www.henglimtools.com