10kg single point weighing sensor AMI-10KG packaging scale sensor

Description :

　　10kg single point weighing sensor AMI-10KG packaging scale sensor picture:

　　10kg single point weighing sensor AMI-10KG packaging scale sensor detailed description:

　　Optoelectronic sensors include two types: grating type and encoder type.

　　Grating sensors use Moir é fringes formed by gratings to convert angular displacement into photoelectric signals. There are two gratings, one is a fixed grating and the other is a moving grating mounted on the dial axis. The measured object added to the load-bearing platform rotates the dial axis through a force transmission lever system, driving the moving grating to rotate and causing the Moir é fringes to also move. By using phototubes, conversion circuits, and display instruments, the number of Moir é fringes that have passed can be calculated, and the size of the grating rotation angle can be measured to determine and read the mass of the object being measured.

　　The code wheel (symbol board) of the code wheel sensor is a transparent glass mounted on the dial shaft, with black and white codes encoded according to a certain coding method. When the measured object added to the load-bearing platform rotates the dial shaft through a force transmission lever, the code wheel also rotates a certain angle. The photovoltaic cell will receive light signals through the encoder and convert them into electrical signals, which will then be digitally processed by the circuit and displayed on the monitor as numbers representing the measured quality. Optoelectronic sensors were mainly used in electromechanical scales.

　　The hydraulic sensor, as shown in Figure 4, increases the pressure of the hydraulic oil when subjected to the gravity P of the measured object, and the degree of increase is proportional to P. By measuring the increase in pressure, the mass of the object being measured can be determined. Hydraulic sensors have a simple and sturdy structure, a large measurement range, but the accuracy generally does not exceed 1/100.

　　Electromagnetic force sensors work based on the principle of balancing the load on the load-bearing platform with electromagnetic force. When the tested object is placed on the load-bearing platform, one end of the lever tilts upwards; The photoelectric component detects the tilt signal, which is amplified and flows into the coil to generate electromagnetic force, restoring the lever to a balanced state. The mass of the measured object can be determined by digital conversion of the current that generates electromagnetic balance force. Electromagnetic force sensors have high accuracy, reaching 1/2000 to 1/60000, but the weighing range is only between tens of milligrams and 10 kilograms.

　　A capacitive sensor operates by utilizing the proportional relationship between the oscillation frequency f of the capacitor oscillation circuit and the electrode spacing d. There are two plates, one fixed and the other movable. When loading the tested object on the load-bearing platform, the plate spring bends, the distance between the two plates changes, and the oscillation frequency of the circuit also changes accordingly. By measuring the change in frequency, the mass of the object being measured on the load-bearing platform can be determined. Capacitive sensors have low power consumption, low cost, and accuracy ranging from 1/200 to 1/500.

　　As shown in Figure 7, when the ferromagnetic element undergoes mechanical deformation under the gravity of the measured object, internal stress is generated and magnetic permeability changes, causing the induced voltage of the secondary coils wound on both sides of the ferromagnetic element (magnetic pole) to also change accordingly. By measuring the change in voltage, the force applied to the magnetic pole can be determined, thereby determining the mass of the object being measured. The accuracy of magnetic pole transformation sensors is not high, usually 1/100, and is suitable for large tonnage weighing work, with a weighing range of tens of thousands to tens of thousands of kilograms.

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• 10kg single point weighing sensor