Patent ID: 8844362
Filing Date: 2014-09-30
Classification: G01L

Abstract:
1. A pressure sensor for sensing pressure of a fluid, the pressure sensor comprising: a tubular housing having a first capacitor plate segment and a second capacitor plate segment, the first capacitor plate segment and the second capacitor plate segment being on opposite sides of the tubular housing, wherein each of the first capacitor plate segment and the second capacitor plate segment includes a planar inner surface; and an anvil positioned within the tubular housing, wherein the anvil and the tubular housing function as opposite terminals of a variable capacitor, wherein a first capacitor plate side of the anvil and the first capacitor plate segment face each other and have a first gap therebetween, wherein a second capacitor plate side of the anvil and the second capacitor plate segment face each other and have a second gap therebetween, wherein the first capacitor plate segment and the second capacitor plate segment are deflectable in response to the pressure of the fluid, and wherein capacitance of the variable capacitor changes in response to a first change in a size of the first gap and a second change in a size of the second gap.