Spring tube - — The core components of a pressure gauge

Today we are going to introduce the spring tube, this kind of parts is the core in our pressure gauge and pressure type thermometer, pressure type of instrument can't work without it. What is the spring tube first? Spring tube is the special shaped tube closed at one end, when outside of tube and tube under different pressure, the deformation within the elastic limit, bourdon tube is one of the pressure measuring instrument pressure detection device. The earliest spring tube bent into a C shape, because the French E. Borden's invention, so also called bourdon tube, modern is still a large number of applications. The flat tube is suitable for low pressure, pipe is suitable for high pressure, spring spiral spring tube plate can be used for pipe with larger displacement meter. A spring tubes, at least including steel wire, bonding layer and the aluminum foil composite film. Encase steel wire aluminum foil composite film, the composite cover on both ends in the adjacent side and aluminum foil composite film encase steel wire. There is a glue layer between the layers of the membrane. This spring tube heat, cold, big radial force, axial expansion ratio is high. Pressure spring tube is also called bourdon tube. It is a pipe body assumes the circular arc form, spiral, the vortex line, twist, and cross section for a particular shape, used to measure the fluid pressure in the atc. Compared with other sensor with high sensitivity, large stiffness, the characteristics of the overload capacity is strong, widely used for measuring high pressure. Using bourdon tube pressure - pressure - Displacement characteristics, can be made into direct instructions properties of all kinds of pressure gauges, to measure all kinds of gas source ( Nitrogen, oxygen, hydrogen and air) , all kinds of liquid pressure. Also can be made into sensors, pressure signal control motors, electrical appliances, automation. Spring tube is certainly not used alone, typically require components with the other parts, which become the core element of our pressure gauges.