Measuring and testing – Fluid pressure gauge – With pressure and/or temperature compensation
Patent
1985-10-28
1988-05-24
Woodiel, Donald O.
Measuring and testing
Fluid pressure gauge
With pressure and/or temperature compensation
73735, 338 32H, G01L 704, G01L 914, G01L 1904
Patent
active
047458119
ABSTRACT:
A pressure responsive apparatus having a Hall-effect detector is described. The apparatus preferably includes a pressure gauge having a Bourdon tube responsive to an external pressure. The Bourdon tube has mounted thereto a pair of magnets supported on, or attached to, an end thereof for generating a low power, magnetic flux field. The Hall-effect detector is mounted in proximity to the pair of magnets and generates an output voltage having values corresponding to movement of the magnets with respect to the detector. A processing circuit receives the output voltage from the Hall-effect detector, and in response thereto generates a plurality of output signals proportional to the sensed pressure variations in the Bourdon tube.
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Meier Harold E.
Span Instruments, Inc.
Woodiel Donald O.
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