Patent ID: 8323469

Claim:
A sensor for analysing gases comprising a duct ( 1 ) suitable for being crossed by a flow of gas and provided with an inlet opening ( 2 ) and an outlet opening ( 3 ), a galvanic reference element comprised of a container ( 4 ) containing an electrolytic solution ( 5 ) in which a reference electrode ( 6 ) is inserted, and a galvanic measuring element comprising a measuring electrode ( 7 ) and a wick ( 8 ) associated to said measuring electrode ( 7 ) and suitable for defining an electrode/electrolyte interface thereon, characterized in that said container ( 4 ) is fixed to said duct ( 1 ) and the measuring electrode ( 7 ) is arranged transversally to the axis of the duct ( 1 ), the wick ( 8 ) being in the form of a filiform element anchored to the container ( 4 ) and having a first end ( 8 a ) contacting the measuring electrode ( 7 ) and a second end ( 8 b ) contacting said electrolytic solution ( 5 ), the wick ( 8 ) forming at least one coil around the measuring electrode ( 7 ).