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US 7,093,495 B2Granted
Pressure sensor
AssigneeCTS Corporation
InventorCraig Ernsberger
Life of this patent
Estimating the term…
Abstract
A pressure sensor for sensing a pressure level of a medium. The pressure sensor includes a rigid substrate having a medium contacting side and a pressure sensitive resistor mounted on the medium contacting side. The resistor exhibits a change in resistance in response to pressure changes on the resistor above a predetermined threshold. Other embodiments of the invention are shown using a wheatstone bridge with pressure sensitive resistors and resistors that are insensitive to pressure changes.
Claims12
A pressure sensor for attachment to a pressure vessel comprising:
- a) a substrate communicated with the pressure vessel, the substrate having a first surface and a second surface, the first surface adapted to be directly exposed to a first pressure level contained within the pressure vessel, the second surface adapted to be exposed to a second pressure level;
- b) a first resistor mounted to the first surface, the first resistor responsive to the first pressure level;
- and
- c) a second resistor mounted to the second surface, the second resistor responsive to the second pressure level.
1 more element
A pressure sensor for attachment to a pressure vessel comprising:
- a) a housing communicated with the pressure vessel;
- b) a substrate mounted to the housing,
- c) the substrate having a first surface and a second surface, the first surface adapted to be directly exposed to a first pressure level contained within the pressure vessel;
- d) a first resistor mounted to the first surface, the first resistor responsive to the first pressure level;
- and
- e) a second resistor mounted to the first surface, the second resistor having a low response to the first pressure level, the second resistor and the first resistor electrically connected.
3 more elements
Dependencies are inferred from the claim text.