Method and device for continuous measuring of gas pressures

Details Method and device for continuous measuring of gas pressures Method and device for continuous measuring of gas pressures

1977-05-24

1979-05-15

Ciarlante, Anthony V.

Measuring and testing

Fluid pressure gauge

Diaphragm

73724, G01L 912

Patent

active

041541154

ABSTRACT:
A method and a device for the continuous measurement of gas pressures are provided. The gas pressure to be measured is modulated in a small partial volume and the pressure fluctuations thus produced are converted into electrical signals which are proportional to the gas pressure to be measured. The apparatus comprises a housing within which a modulation chamber is formed, that chamber communicating with the volume of which the pressure is to be measured through a defined opening or metering orifice. The modulation chamber is bound on one side by a pressure transducer connected to an alternating voltage source and on the other side, by a receiver for converting the pressure fluctuations into an electrical signal. The distance between the pressure transducer and receiver is kept small relative to the sound wave length at the modulation frequency.

REFERENCES:
patent: 3295360 (1967-01-01), Dimeff
patent: 3399572 (1968-09-01), Riordan et al.
patent: 3425281 (1969-02-01), Barz
patent: 3557621 (1971-01-01), Ferran

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