US 12,332,206 B2
Electrochemical multi-gas sensor
Andreas Nauber, Lübeck (DE); Michael Sick, Lübeck (DE); Marie-Isabell Mattern-Frühwald, Lübeck (DE); and Beate Ritz, Lübeck (DE)
Assigned to DRÄGER SAFETY AG & CO. KGAA, Lübeck (DE)
Filed by Dräger Safety AG & Co. KGaA, Lübeck (DE)
Filed on Sep. 28, 2021, as Appl. No. 17/487,493.
Claims priority of application No. 10 2020 125 411.3 (DE), filed on Sep. 29, 2020.
Prior Publication US 2022/0099614 A1, Mar. 31, 2022
Int. Cl. G01N 27/27 (2006.01); G01N 27/413 (2006.01)
CPC G01N 27/27 (2013.01) [G01N 27/413 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A multi-gas sensor comprising:
a housing comprising a gas inlet;
a first working electrode comprised of a first electrode material;
a second working electrode comprised of a second electrode material, wherein the second electrode material is different from the first electrode material;
a reference electrode comprising a first single electrode comprised of the first electrode material and, separately therefrom, a second single electrode comprised of the second electrode material, the first single electrode and the second single electrode being electrically conductively connected; and
an electrolyte in an interior of the housing, wherein the electrolyte is in contact with the first electrode material of the first working electrode, with the second electrode material of the second working electrode, with the first electrode material of the first single electrode of the reference electrode and with the second electrode material of the second single electrode of the reference electrode, wherein the first working electrode is arranged between the gas inlet and the first single electrode of the reference electrode.