INSTRUMENTATION AND CONTROL TUTORIAL 2 – SENSORS …
• Bourdon Tube. • Spring and Piston. • Bellows and capsules. • Diaphragm. 3.1. BOURDON TUBE Figure 9 The Bourdon tube is a hollow tube with an elliptical cross section. When a pressure difference exists between the inside and outside, the tube tends to straighten out and the end moves. The movement is usually coupled to a
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