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在1849年已有了波登管的专利,波登管是大多数压力和温度仪表中的敏感元件。这种管的截面是椭园状的,它可盘卷成“C”形、螺旋形或盘式螺旋形等几种形状,实际应用时其一端是封闭的,另一端通常是用一根细管和压力源连结在一起。当有压流体(气体或液体)所产生的力作用于管壁时,则管的椭园形截面有变成园形截面的趋势,因此,使已盘卷成形的管子有一种轻微的伸直倾向。管子顶端的位移可利用机
The Bourdon tube was patented in 1849 and is the sensor of most pressure and temperature gauges. The cross section of this tube is oval-shaped, it can be coiled into a “C” shape, spiral or disc spiral and other shapes, the practical application of one end is closed, the other end is usually used with a thin Tube and pressure source together. When a force generated by a pressurized fluid (gas or liquid) acts on the tube wall, the elliptical section of the tube tends to have a circular cross-section, thus allowing the tube that has been coiled to have a slight extension tendency. The displacement of the top of the tube can be used machine