FIELD: gas concentration measurement technology. SUBSTANCE: transducer has case, metering electrode containing catalytically active material capable of converting gas analyzed, counter-electrode containing carbon material with electrochemical active surface compounds capable of oxidizing or reducing, and electrolyte contacting metering electrode and counter-electrode; carbon material in counter-electrode has specific surface area of at least 40 sq.m/g. Method using this transducer is given in description of invention. EFFECT: improved reliability of metering results. 22 cl, 2 dwg
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