Spirit level - introduction to working principle
The level tube of the level is made of glass. The inner wall of the level tube is a curved surface with a certain radius of curvature. The tube is filled with liquid. When the level tilts, the air bubbles in the level tube will move to the raised end of the level. To determine the position of the horizontal plane. The larger the radius of curvature of the inner wall of the vial, the higher the resolution, and the smaller the radius of curvature, the lower the resolution. Therefore, the radius of curvature of the vial determines the accuracy of the level. The spirit level is mainly used to test the flatness, straightness, verticality and horizontal position of equipment installation of various machine tools and workpieces. Especially when measuring the verticality, the magnetic level can be adsorbed on the vertical working surface without manual support, which reduces the labor intensity and avoids the measurement error brought by the human body heat radiation to the level.
The bottom and side of the spirit level are rectangular structures with a length of 200mm. The precision is generally (0.02-0.025) mm/m. If the user has special requirements, it can be customized separately. Compared with the conventional structure, the zero-adjustment structure of the level meter has unique features: 1. It is easy to adjust zero. 2. After adjustment, the zero position is not easy to change. As shown in Figure 1. When the V-shaped groove surface at the bottom of the spirit level rotates 5 times around the mandrel shaft, if the air bubbles move, the requirement can be met by adjusting the screw 2. This item has been adjusted before leaving the factory and generally remains unchanged.
The structure of the spirit level varies according to the classification. A frame level is generally composed of a level body, a horizontal level, an insulated handle, a main level, a cover plate, and a zero adjustment device. A ruler-type level is generally composed of a level body, a cover plate, a main level, and a zero adjustment device.
A spirit level is a measuring tool in which a level is used as a measuring and reading element. The level is a sealed glass tube, and the longitudinal section of the inner surface is an arc surface with a certain radius of curvature. The glass tube of the level is filled with a liquid with a small viscosity coefficient, such as alcohol, and its mixture, etc. The part without liquid is usually called the level bubble. There is a certain relationship between the radius of curvature of the longitudinal section of the inner surface of the glass tube and the division value, and the inclination of the measured plane can be measured according to this relationship.
