Pressure responsive apparatus

Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Content or effect of a constituent of a liquid mixture

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Details

73398R, G01N 2902

Patent

active

040488462

ABSTRACT:
Apparatus responsive to the pressure of a fluid contained in or surrounding a stiff but resilient hollow body comprises a stiff, but resilient ring mounted concentric with the body by means of four equi-spaced radially extending stiff struts. Electromagnetic means is provided for exciting natural vibrations of the ring at a resonance frequency, which will be dependent upon the pressure of the fluid in the body. Means is provided for measuring the frequency of vibration, enabling the pressure of the fluid to be determined, e.g. from a pressure-frequency calibration curve for the apparatus.

REFERENCES:
patent: 2518348 (1950-08-01), Mason
patent: 3021711 (1962-02-01), Arvidson
patent: 3411344 (1968-11-01), Lloyd
patent: 3585843 (1971-06-01), Stansfeld
patent: 3626749 (1971-12-01), Abbotts
patent: 3911726 (1975-10-01), Georgiev

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