Patent · US Active

Pressure transmitter for detection of a variable relative to a process fluid

US7859681B2 · kind B2 · utility

3Cited by

6References

10Claims

0Family size

Assignee

ABB S.P.A. · IT

Inventors

Andrea Moroni · Gorla Minore, IT
Andrea Pozzi · Villa Guardia, IT

Key dates

Filing date	Feb 5, 2008
Grant date	Dec 28, 2010
Priority date	—
Expiry date	Feb 5, 2028

Classification

Technology area (CPC G)Physics
CPC primaryG01L13/025
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A pressure transmitter for detection of a physical variable relative to a process fluid, comprising: a first and a second pressure-sensitive membrane suitable for interfacing with said process fluid; a pressure sensor having a supporting body provided with a cavity inside which a third pressure-sensitive membrane is positioned; an analysis and conditioning unit operationally coupled to at least one light source; a first and a second optical fiber having a first end operationally coupled to said power source; said first and second optical fibers transmitting the light signals emitted by said source to said third membrane and the signals reflected by the third membrane to said analysis and conditioning unit which generates signals indicating said physical variable.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.