Pressure gauge

Details Pressure gauge Pressure gauge

G - Physics

01

L

73/3

G01L 7/12 (2006.01)

Patent

CA 1116428

ABSTRACT OF THE DISCLOSURE A capsule for use in aneroid pressure gauges comprising a pair of membranes whose peripheral edge regions are sealingly engaged to an interposed insulator substrate to define there- within a sealed, partially evacuated, space. The pair of membranes have an electrical capacitance created between them and means are provided coupled to the membranes for measuring changes in the capacitance as the distance between the membranes changes as a result of changes in pressure. The capsule is particularly suited for use in connection with an aneroid pressure gauge or barometer utilized in radiosondes.

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