Patent · US Active

Relative-pressure sensor comprising a reference-pressure supply

US12050145B2 · kind B2 · utility

0Cited by

0References

13Claims

0Family size

Assignee

Endress+Hauser SE+Co. KG · DE

Inventors

Michael Hugel · Lörrach, DE
Nils Ponath · Lörrach, DE
Armin Rupp · Weil am Rhein, DE
Frank Volz · Freiburg (Elbe), DE

Key dates

Filing date	Nov 20, 2020
Grant date	Jul 30, 2024
Priority date	—
Expiry date	Aug 11, 2041

Classification

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

Abstract

A relative-pressure sensor for determining a pressure of a medium in relation to an atmospheric pressure includes a housing; a measuring element arranged in the housing, wherein the pressure to be measured acts upon an outer surface of the measuring element in contact with the medium; a reference-pressure supply, which supplies an inner surface of the measuring element with atmospheric pressure in the form of ambient air, an evaluation unit, which determines the pressure of the medium from a variable determined using the measuring element; and at least one drying chamber arranged in the housing for taking up atmospheric humidity from the ambient air supplied through the reference-pressure supply. A bushing can be pressed into the housing and has a capillary-type groove, which is helical at least in sections and runs around the bushing.

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