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28
2023
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03
Basic type of level
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According to material classification, the level can be divided into plastic level and glass level. The accuracy of the plastic level is low, while the accuracy of the glass level is relatively high.
Electronic level gauge is used to measure the surface of high-precision tool machines, such as NC lathes, milling machines, cutting machines, and three-dimensional measuring machines. Its sensitivity is very high. If measured with a left to right offset of 25 scales, the measured workpiece can only be measured within the tilting range. The main principles of an electronic level are inductive and capacitive. According to different measurement directions, it can also be divided into one and two dimensional electronic level meters. The measurement part of the electronic level is mainly composed of a housing, a micrometer device, and an electrode bubble type sensor. The electronic bubble type sensor has a similar function to the level of a general level gauge, but its structure is different.
Inductive principle: When the base of the level meter is tilted due to the inclination of the workpiece to be measured, the movement of the internal pendulum causes the voltage change of the induction coil. The measuring principle of a capacitive level meter is that a circular pendulum is freely suspended on a thin line, and the pendulum is affected by the gravity of the earth's center, and is suspended in a frictionless condition. "There are electrodes on both sides of the pendulum and the capacitance is equal when the gaps are the same. If the level gauge is affected by the workpiece to be measured, changes in the distance between the two gaps will result in differences in capacitance and angle.".
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