Optical pressure sensor and a method and apparatus for making su

Measuring and testing – Fluid pressure gauge – Photoelectric

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Details

25022714, 25023119, G01L 704

Patent

active

050091077

ABSTRACT:
An optical absolute pressure sensor constituted by a body made of a substance having photoelastic properties and provided with at least one internal duct extending parallel to the longitudinal direction of said body, the pressure inside said duct being substantially zero and the ends thereof being closed in sealed manner. The invention also applies to a method of making the sensor, to apparatus for implementing the method, and to a sensor constituting the product of the method.

REFERENCES:
patent: 3273447 (1966-09-01), Frank
patent: 4612810 (1986-09-01), Martens

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