Primary measuring Elements for the Process Pressure


#1

Bourdon tubes are the most common type of pressure sensors. A bourdon tube is a metal tube with a flattened circular cross section bent into a C-shape, Spiral, or Helix. When pressure is applied through the open end, the increased pressure causes the flattened cross section to become more circulars and the shape to straighten. This moves the closed end. The device is illustrated in figure.