Overview |
![]() |
The Bourdon Tube is a nonliquid pressure measurement device. It is widely used in applications where inexpensive static pressure measurements are needed. A typical Bourdon tube contains a curved tube that is open to external pressure input on one end and is coupled mechanically to an indicating needle on the other end, as shown schematically below. ![]() Typical Bourdon Tube Pressure Gages
Internal linkages have been simplified. The external pressure is guided into the tube and causes it to flex, resulting in a change in curvature of the tube. These curvature changes are linked to the dial indicator for a number readout. Alternatively, a strain gage circuit can be attached on the tube to convert the pressure-induced deflections into electric voltage signals. These signals can then be output electronically, rather than mechanically with the dial indicator. |
Pros and Cons | ||||||||||||||||||||||
![]() | ||||||||||||||||||||||
|