EP 1955020 A2 20080813 - DEVICE FOR DETERMINING AND/OR MONITORING THE MASS FLOW RATE OF A GASEOUS MEDIUM
Title (en)
DEVICE FOR DETERMINING AND/OR MONITORING THE MASS FLOW RATE OF A GASEOUS MEDIUM
Title (de)
VORRICHTUNG ZUR BESTIMMUNG UND/ODER ÜBERWACHUNG DES MASSEDURCHFLUSSES EINES GASFÖRMIGEN MEDIUMS
Title (fr)
DISPOSITIF POUR DETERMINER ET/OU CONTROLER LE DEBIT MASSIQUE D'UN MILIEU GAZEUX
Publication
Application
Priority
- EP 2006069165 W 20061130
- DE 102005057688 A 20051201
Abstract (en)
[origin: WO2007063114A2] The invention relates to a device for determining and/or monitoring the mass flow rate of a gaseous medium through a conduit (2) or through a measuring tube. Said device has at least two temperature sensors (11, 12) and a control/evolution unit (10), both temperature sensors (11, 12) being located in a region of the housing (5) facing the medium (3) and being in thermal contact with the medium (3) flowing through the conduit (2) or through the measuring tube. A first temperature sensor (11) is configured so as to be heatable and a second temperature sensor (12) provides data on the actual temperature of the medium. The control/evaluation unit (10) determines the mass flow rate of the medium (3) using the difference in temperature (?T) between the two temperature sensors (11, 12) and/or using the heating capacity (Q) fed to the first temperature sensor (11). The control/evaluation unit, using at least one additional process variable (p, T, v) of the flowing medium (3), determines a corrected value for the mass flow rate determined using the difference in temperature (?T) or the heating capacity (Q) and makes available a corrected value (Qmc) for the mass flow rate through the conduit (2) or through the measuring tube.
IPC 8 full level
CPC (source: EP US)
G01F 1/696 (2013.01 - EP US); G01F 1/6965 (2013.01 - EP US); G01F 1/698 (2013.01 - EP US); G01P 5/12 (2013.01 - EP US)
Citation (search report)
See references of WO 2007063114A2
Citation (examination)
THOMPSON D: "Aerodynamic heating of miniature bead thermistor thermometers in a rarified airstream", JOURNAL OF APPLIED METEOROLOGY, vol. 7, 1968, pages 504 - 508
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2007063114 A2 20070607; WO 2007063114 A3 20070719; DE 102005057688 A1 20070614; EP 1955020 A2 20080813; US 2010138052 A1 20100603
DOCDB simple family (application)
EP 2006069165 W 20061130; DE 102005057688 A 20051201; EP 06830257 A 20061130; US 8582806 A 20061130