Patent · US Active

Relative pressure sensor

US10048149B2 · kind B2 · utility

1Cited by

11References

11Claims

0Family size

Assignee

ENDRESS+HAUSER GMBH+CO.KG · DE

Inventors

Armin Rupp · Weil am Rhein, DE
Raphael Schonhardt · Rheinfelden (Baden), DE
Michael Hugel · Lörrach, DE

Key dates

Filing date	Nov 14, 2014
Grant date	Aug 14, 2018
Priority date	—
Expiry date	Nov 23, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG01L19/144
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A relative pressure sensor (1) includes a pressure measuring cell (10) having a measuring diaphragm (12), a main body (14) which is connected to said measuring diaphragm, and a the measuring chamber between the measuring diaphragm and main body, a reference pressure being applied to the measuring chamber by a reference pressure channel (18) which runs from a rear face (16) of the main body (14) through the main body (14); a clamping ring (38); and a housing (40) which has at least one housing body (42) with a measuring cell chamber (46), wherein the pressure measuring cell (10) is clamped in the measuring cell chamber (46) by the clamping ring (38). The housing has a reference air opening (48) which communicates with the reference pressure channel (18) by a reference air path which has a path volume which is separate from the volume of the measuring cell chamber, wherein the reference air path has a section which runs along the rear face of the main body, wherein the section is bounded by the rear face of the main body and a guide body, which guide body is clamped in against the rear face of the main body and covers an opening of the reference pressure channel (18) in the rear face…

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