Global Patent Index - EP 2972129 A1

EP 2972129 A1 20160120 - THERMAL FLOW SENSOR FOR DETERMINING A GAS OR THE COMPOSITION OF A GAS MIXTURE AND THE FLOW SPEED OF THE GAS OR THE GAS MIXTURE

Title (en)

THERMAL FLOW SENSOR FOR DETERMINING A GAS OR THE COMPOSITION OF A GAS MIXTURE AND THE FLOW SPEED OF THE GAS OR THE GAS MIXTURE

Title (de)

THERMISCHER STRÖMUNGSSENSOR ZUR BESTIMMUNG EINES GASES ODER DER ZUSAMMENSETZUNG EINES GASGEMISCHES, SOWIE DESSEN STRÖMUNGSGESCHWINDIGKEIT

Title (fr)

CAPTEUR D'ÉCOULEMENT THERMIQUE SERVANT À DÉTERMINER UN GAZ OU LA COMPOSITION D'UN MÉLANGE GAZEUX AINSI QUE SA VITESSE D'ÉCOULEMENT

Publication

EP 2972129 A1 20160120 (DE)

Application

EP 14706560 A 20140224

Priority

  • DE 102013102398 A 20130311
  • EP 2014053533 W 20140224

Abstract (en)

[origin: WO2014139786A1] The invention relates to a thermal flow sensor (1) for determining a gas or the composition of a gas mixture (2) and the flow speed of the gas or the gas mixture, comprising: - a substrate (3) onto which at least one first dielectric layer (6) is applied; - at least one heating structure (8) which is applied onto the first dielectric layer (6) and which is used to heat the gas or the gas mixture (2); - at least one first temperature sensor element (9) which is applied onto the first dielectric layer (6) at a distance from the heating structure (8) and which detects the temperature of the gas or the gas mixture (2) heated on the heating structure (8); - a regulating device (11) which regulates the heating structure (8) in a first operating state such that the heating structure has a specified temperature and which regulates the heating structure (8) in a second operating state such that a power supplied to the heating structure (8) corresponds to a specified power; and - an analyzing unit (12) which ascertains at least one physical property of the present gas or the gas mixture (2) using the operating states and which determines the present gas or the composition of the gas mixture (2) and the flow speed of the gas or the gas mixture using said physical property.

IPC 8 full level

G01F 1/699 (2006.01); G01F 1/692 (2006.01); G01N 27/18 (2006.01)

CPC (source: EP US)

G01F 1/68 (2013.01 - US); G01F 1/692 (2013.01 - EP US); G01F 1/699 (2013.01 - EP US); G01N 25/00 (2013.01 - US); G01N 33/0027 (2013.01 - EP US)

Citation (search report)

See references of WO 2014139786A1

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 102013102398 A1 20140911; EP 2972129 A1 20160120; US 10101285 B2 20181016; US 2016025660 A1 20160128; WO 2014139786 A1 20140918

DOCDB simple family (application)

DE 102013102398 A 20130311; EP 14706560 A 20140224; EP 2014053533 W 20140224; US 201414773802 A 20140224