Bellows

Bellows pressure measuring instrument is a pressure elastic member, which is cylindrical having Hydraulic tube fittings Hydraulic tube fittings corrugated wrinkles thin shell, the elastic bellows, the pressure, the axial force, under the action of lateral forces or moments can produce displacement.
Bellows widely used, mainly used as a pressure measuring instrument measuring element, the pressure into displacement or force. Thin wall bellows, high sensitivity, measurement range of tens to hundreds of MPa Pa. Further, the bellows may be used as Hydraulic pipe fittings Hydraulic pipe fittings element, the two media separated or prevent unwanted fluid into the measurement portion of the device. It can be used as the compensation components, the variability of the volume of use of the instrument temperature error compensation. Also sometimes used as a two part elastic coupling joints. Bellows can be classified according to the constituent material of metal bellows, metallic bellows two kinds; according to the structure can be divided into single and multiple layers. Single bellows used more often. Multilayer Bellows high strength, durability, stress, an important measurement used. Bellows material is generally bronze, brass, stainless steel, Monel and Inconel Seoul alloy.