Bellows for sensors, That is, the curved beam structure sensor, welded and sealed with metal bellows, and filled with inert gas. The measuring range of the bellows type sensor: 10, 20, 30, 501002003007001000kg The bellows type load cell is a curved beam structure sensor, which is welded and sealed with metal bellows and filled with inert gas. It can withstand tension and compression, and has strong resistance to overload, fatigue and eccentric load. It can be applied to electronic belt scales, hopper scales, platform scales and other special scales, as well as various material tests and other force measuring devices of electronic transformation. Bellows are widely used in instrumentation. Its main purpose is to convert pressure into displacement or force as the measuring element of pressure measuring instruments. The bellows has a thin wall, high sensitivity and a measurement range of tens of Pa to tens of MPa. Its open end is fixed, the sealing end is in a free state, and an auxiliary coil spring or spring is used to increase elasticity.

When working, the bellows for the sensor will stretch along the length of the pipe under the action of internal pressure, so that the movable end will produce a displacement that is related to the pressure. The movable end drive pointer directly indicates the pressure. A bellows is often combined with a displacement sensor to form a pressure sensor with an electrical output, sometimes used as an isolation element. Polyethylene bellows is a plastic protective sleeve extruded from polyethylene material. Because its inside and outside are annular bellows, it is also called bellows. It can protect the cable from damage. Good wear and corrosion resistance. Because polyethylene materials are more resistant to corrosion, wear and aging, and are green, polyethylene bellows are also commonly used as rainwater and sewage branch pipes. There are also two types of bellows made of PP/PA, which are flame retardant. Corrugated tubes can be extruded from PE, PA and PP and can be used to protect wires and cables from mechanical damage, such as scratches and cuts. They have the advantages of good flexibility, good bending, acid resistance, and wear resistance. They can protect wire harnesses, wires and cables, and are more suitable for protecting some corners or bent wires. Usually, it can be customized for flame retardants and split-wave tubes. Widely used in mechanical equipment, automatic control, automobile, subway, electrical switch cabinet and other industries. The bellows load cell can withstand both tension and compression stress forms, and has strong resistance to eccentric load and fatigue. For harsh working conditions, stainless steel bellows can be used for welding and sealing.

Generally speaking, people who are not in this industry know little about it. The bellows for sensors can be divided into single-layer and multi-layer. In the case of the same total thickness, the internal stress of the multi-layer bellows is small, can withstand higher pressure, durability is also improved. Under the action of pressure or axial force, the bellows will lengthen or shorten. Because it is easy to deform in the axial direction and has high sensitivity, it can maximize its advantages in load cells.