EP 1070231 A1 20010124 - GAS METER INCORPORATING CALORIFIC MEASUREMENT
Title (en)
GAS METER INCORPORATING CALORIFIC MEASUREMENT
Title (de)
GASZÄHLER MIT EINER KALORISCHEN MESSUNG
Title (fr)
COMPTEUR A GAZ INCORPORANT UNE MESURE CALORIFIQUE
Publication
Application
Priority
- AU 9900259 W 19990408
- AU PP293098 A 19980409
Abstract (en)
[origin: WO9953273A1] A gas meter (10) determining the calorific value of the gas passing through the meter is disclosed. The meter includes a reaction chamber (28) that draws gas from the gas flow path and an air intake (30). The calorific value is determined using a resistor (36), coated with a catalyst material, that forms part of a wheatstone bridge circuit. Oxidation of the gas/air mixture on the surface of the resistor (36) causes a temperature and resistance change dependent on the calorific value of the gas that can be detected by the wheatstone bridge.
IPC 1-7
IPC 8 full level
G01N 27/16 (2006.01); G01N 33/22 (2006.01)
CPC (source: EP)
G01N 33/225 (2013.01); G01N 27/16 (2013.01)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9953273 A1 19991021; AU PP293098 A0 19980507; EP 1070231 A1 20010124; EP 1070231 A4 20020116; NZ 507220 A 20020828
DOCDB simple family (application)
AU 9900259 W 19990408; AU PP293098 A 19980409; EP 99913009 A 19990408; NZ 50722099 A 19990408