Measuring and testing – Fluid pressure gauge – Bourdon
Patent
1982-09-14
1985-03-05
Woodiel, Donald O.
Measuring and testing
Fluid pressure gauge
Bourdon
73756, G01L 704
Patent
active
045023360
ABSTRACT:
A pressure measuring device is provided with an indicator such as a bourdon tube (10) for indicating the absolute value of the difference in pressure between fluids applied to the indicator through first and second conduits (15) and (20). Valve means (25) including an element (100) actuable in response to the pressure in conduits (15) and (20) consistently applies the higher pressure fluid to that portion of the indicator adapted to receive such higher pressure fluid and the lower pressure fluid to that portion of the indicator adapted to receive the lower pressure fluid. Optical means such as transmitter (115) and receiver (120) are provided for indication of the sign (positive or negative) of the pressure difference.
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Donnelly Brian G.
Dudash Carl S.
Swiatocha John
United Technologies Corporation
Woodiel Donald O.
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