EP 4070060 A1 20221012 - RELATIVE-PRESSURE SENSOR COMPRISING A REFERENCE-PRESSURE SUPPLY
Title (en)
RELATIVE-PRESSURE SENSOR COMPRISING A REFERENCE-PRESSURE SUPPLY
Title (de)
RELATIVDRUCKSENSOR MIT REFERENZDRUCKZUFÜHRUNG
Title (fr)
CAPTEUR DE PRESSION RELATIVE COMPRENANT UNE ALIMENTATION EN PRESSION DE RÉFÉRENCE
Publication
Application
Priority
- DE 102019132724 A 20191202
- EP 2020082847 W 20201120
Abstract (en)
[origin: WO2021110430A1] The invention relates to a relative-pressure sensor (1) for determining the pressure (p1) of a medium (2) in relation to an atmospheric pressure (p2), the sensor comprising a housing (3) having a measuring element (4) located in the housing (3), wherein the pressure (p1) to be measured acts upon an outer surface of the measuring element (4), said surface being in contact with the medium (2), a reference-pressure supply (5), which supplies an inner surface of the measuring element (4) with atmospheric pressure (p2) in the form of ambient air, an evaluation unit (6), which determines the pressure (p1) of the medium (2) from a variable determined using the measuring element (4), and comprising at least one drying chamber (7) located in the housing (3), for receiving atmospheric humidity from the ambient air that is supplied via the reference-pressure supply (5). A bushing (9) is provided, which can be pressed into the housing (3) and has a capillary-type, at least partly helical groove (11) running around the bushing (9).
IPC 8 full level
G01L 13/02 (2006.01); G01L 19/06 (2006.01)
CPC (source: EP US)
G01L 13/025 (2013.01 - EP US); G01L 19/0654 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102019132724 A1 20210602; CN 114761775 A 20220715; EP 4070060 A1 20221012; US 12050145 B2 20240730; US 2022412830 A1 20221229; WO 2021110430 A1 20210610
DOCDB simple family (application)
DE 102019132724 A 20191202; CN 202080083514 A 20201120; EP 2020082847 W 20201120; EP 20811279 A 20201120; US 202017756817 A 20201120