EP 0797770 A1 19971001 - METHOD OF MEASURING THE CONCENTRATION OF A GAS IN A GAS MIXTURE AND ELECTROCHEMICAL SENSOR FOR DETERMINING THE GAS CONCENTRATION
Title (en)
METHOD OF MEASURING THE CONCENTRATION OF A GAS IN A GAS MIXTURE AND ELECTROCHEMICAL SENSOR FOR DETERMINING THE GAS CONCENTRATION
Title (de)
VERFAHREN ZUR MESSUNG DER KONZENTRATION EINES GASES IN EINEM GASGEMISCH SOWIE ELEKTROCHEMISCHER SENSOR ZUR BESTIMMUNG DER GASKONZENTRATION
Title (fr)
PROCEDE DE MESURE DE LA CONCENTRATION D'UN GAZ DANS UN MELANGE GAZEUX ET CAPTEUR ELECTROCHIMIQUE POUR LA DETERMINATION DE CETTE CONCENTRATION
Publication
Application
Priority
- DE 4445033 A 19941216
- EP 9504899 W 19951212
Abstract (en)
[origin: DE4445033A1] The invention concerns a method and an electrochemical sensor for measuring the concentration of at least one predetermined gas in a gas mixture by means of an electrolyte on which a first and a second electrode are applied and which, together with the electrodes connected to a voltage source, is exposed to the gas mixture. The voltage source generates an electric current which flows through the electrodes and electrolyte, is dependent on the ion concentration, and is measured as a signal of the gas concentration. In order to be able to dispense with reference measurements and diffusion holes or diffusion layers, gaseous molecules are adsorbed in the region of the first catalytically active electrode and of the electrolyte and are then split into atoms and subsequently either converted into ions or participate in a chemical reaction. The ion concentrations produced in both cases depend on the catalytic effect of at least one electrode and the gas concentration to be measured.
IPC 1-7
IPC 8 full level
G01N 27/41 (2006.01); G01N 27/406 (2006.01); G01N 27/407 (2006.01); G01N 27/416 (2006.01)
CPC (source: EP US)
G01N 27/4065 (2013.01 - EP US); G01N 27/4071 (2013.01 - EP US); G01N 27/4074 (2013.01 - EP US)
Citation (search report)
See references of WO 9618890A1
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
DE 4445033 A1 19960627; BR 9510040 A 19980602; CN 1050667 C 20000322; CN 1170459 A 19980114; EP 0797770 A1 19971001; JP H10510622 A 19981013; RU 2143679 C1 19991227; US 5820745 A 19981013; WO 9618890 A1 19960620
DOCDB simple family (application)
DE 4445033 A 19941216; BR 9510040 A 19951212; CN 95196804 A 19951212; EP 9504899 W 19951212; EP 95942123 A 19951212; JP 51825496 A 19951212; RU 97111884 A 19951212; US 84957397 A 19970616