Electromechanical force converter for measuring gas pressure

Details Electromechanical force converter for measuring gas pressure Electromechanical force converter for measuring gas pressure

1979-12-26

1981-03-03

Albritton, C. L.

Electrical resistors

Resistance value responsive to a condition

Fluid- or gas pressure-actuated

338 36, 338 41, H01L 1010, H01L 4302

Patent

active

042543959

ABSTRACT:
A Hall-effect sensor unit producing an electrical output is located between two permanent magnets of opposed polarity. The magnetic induction detected by the sensor unit is caused to vary with the pressure by variation of the spacing between the sensor unit and one or both magnets, or by variable introduction of a magnetically soft member between the sensor unit and one of the magnets, the motion being produced in each case by a membrane or a variable volume chamber which produces displacement in proportion to gas pressure to be sensed. The force converter is particularly designed to provide a highly linear pressure measurement signal for the air intake condition of an internal combustion engine.

REFERENCES:
patent: 3761958 (1973-09-01), Nishira
patent: 4077262 (1978-03-01), Cholet
patent: 4187444 (1980-02-01), Gerard

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