Patent ID: 7866216
Filing Date: 2011-01-11
Classification: G01L

Abstract:
1. A pressure transducer, comprising: A header having a first disk of a first diameter, a second disk of a second diameter, and a central cylinder of a third diameter, wherein said first disk has a front side and a back side, wherein the front side of the first disk has a first depression of a given area and a first flexible isolation diaphragm covering said first depression, wherein said first diaphragm is to receive a first pressure, wherein said second disk has a front side and a back side, wherein the front side of the second disk has a second depression of said given area, and a second flexible isolation diaphragm covering said second depression, wherein said second diaphragm is to receive a second pressure, wherein the central cylinder connects the back side of the first disk and the back side of the second disk and wherein the third diameter is smaller than the first diameter such that portions of the back side of the first disk can be accessed adjacent the central cylinder, a channel positioned within said central cylinder that extends between said first and second depressions, and a sensor having a sensing diaphragm positioned in said channel wherein the sensing diaphragm communicates with said first flexible isolation diaphragm and said second flexible isolation diaphragm and wherein said sensing diaphragm deflects in accordance with the difference in said first pressure and said second pressure.