Bourdon gauge

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Related to Bourdon gauges: pressure gage, pressure gauge

Bourdon gauge

n
(General Physics) a type of aneroid pressure gauge consisting of a flattened curved tube attached to a pointer that moves around a dial. As the pressure in the tube increases the tube tends to straighten and the pointer indicates the applied pressure
[C19: named after Eugène Bourdon (1808–84), French hydraulic engineer, who invented it]
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The vacuum plumbing includes more valves, a vacuum gauge, and an air-cooled drag pump that is used to evacuate the bellows and to provide a pressure reference for the quartz Bourdon gauge. An oil-sealed mechanical pump backs the drag pump; a second mechanical pump evacuates the vacuum chamber.
The 133 kPa quartz Bourdon gauge was then calibrated by comparing it to the recently calibrated flexure gauge.