Device for determining the vertical distance between two element

Details Device for determining the vertical distance between two element Device for determining the vertical distance between two element

1989-11-09

1991-03-26

Ruehl, Charles A.

Measuring and testing

Meteorology

Electric disturbance

738652, 33367, G01C 504

Patent

active

050019260

ABSTRACT:
A device for measuring the pressure difference between the two ends of at least one flexible tube connecting together the positions occupied by two elements. In a preferred embodiment, to a summing circuit are applied the signals delivered by two differential pressure sensors disposed respectively at the two positions and to which are applied the pressures prevailing in two flexible tubes, one containing a fluid of a density greater than that of air and the other containing air, these two tubes joining together the respective inputs of the two sensors. An accumulator maintains the static pressures prevailing in both tubes equal. The device is accurate and practically insensitive to temperature variations and accelerations.

REFERENCES:
patent: 3815423 (1974-06-01), Gearhart
patent: 4218919 (1980-08-01), Stephenson et al.
patent: 4397099 (1983-08-01), Gaucher et al.

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