Torque tube digital differential pressure sensor

Details Torque tube digital differential pressure sensor Torque tube digital differential pressure sensor

1985-05-01

1987-03-24

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Vibration type

73717, 73736, 310321, G01L 704, G01L 706, G01L 708, G01L 900

Patent

active

046515690

ABSTRACT:
A digital differential pressure sensor with relatively low sensitivity to common mode line pressure errors. The sensor includes an airtight enclosure having a pair of pressure ports through which pressures are coupled to opposite sides of a pressure-sensing diaphragm, bellows, or Bourdon tube. The pressure-sensing elements generate torques which are transmitted by a shaft to stress-sensitive resonators which are isolated from the torque-producing elements by a sealed, flexible tube.

REFERENCES:
patent: 1827560 (1931-10-01), Binckley
patent: 4406966 (1983-09-01), Paros
patent: 4476725 (1984-10-01), Chorel et al.

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