Remote pressure sensor

Details Remote pressure sensor Remote pressure sensor

1984-04-02

1985-06-11

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Photoelectric

250231P, G01L 900

Patent

active

045220654

ABSTRACT:
The pressure of a gas within an enclosure is measured without making physical contact with the gas by focusing radiation from a laser onto a section of the gas and, while varying the intensity of the radiation, monitoring the section under measurement for electrical breakdown, as indicated by emitted light or suitable breakdown indicia, such as radio noise. The absolute gas pressure at the section of the gas under measurement is determined from a calibration curve relating the intensity of the beam to the pressure at which breakdown occurs for the particular gas being monitored.

REFERENCES:
patent: 3398582 (1968-08-01), McFarland
patent: 4147431 (1979-03-01), Mann

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