A bourdon tube works on the principle that when the pressure inside the tube decreases, the tube tends to:
(Assume detected pressure remains above atmospheric pressure.)
A. coil, due to an increased pressure-induced force on the outside of the tube.
B. straighten, due to an increased pressure-induced force on the outside of the tube.
C. coil, due to the spring action of the metal overcoming the pressure-induced force on the inside of the tube.
D. straighten, due to the spring action of the metal overcoming the pressure-induced force on the inside of the tube.
Show Answer
Answer: C
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