Question

Which of the following pressure measurement devices consists of a hollow metal tube bent like a hook whose end is closed and connected to a dial indicator needle?

• A. Piezoelectric transducers
• B. Strain-gauge pressure transducers
• C. Bourdon tube
• D. Pressure transducers

Answer 1

Answer:

C. Bourdon tube

The Bourdon tube pressure gauge uses the principle that a flattened tube tends to straighten or regain its circular form in cross-section when pressurized. This tube is often bent into a C shape or spiral, hence when pressure is applied, the tube tends to straighten, and the mechanical displacement is converted to a dial reading through a linkage and gear arrangement. It's a common and reliable device used for measuring pressure.