Patent ID: 8840302

Claim:
A temperature sensor, comprising: a metal oxide body comprising a metal oxide of chemical formula Mn α Fe β Ni γ Cr δ Y ε Al φ , wherein α ranges from 0.1 to 0.4 mole, β ranges from 0.1 to 0.3 mole, γ ranges from 0.1 to 0.5 mole, δ ranges from 0.01 to 0.05 mole, ε ranges from 0.1 to 0.5 mole, and Φ ranges from 0.01 to 0.2 mole); a first electrode wire having a first end and a second end; and a second electrode wire having a first end and a second end; wherein, the first end of each wire is inserted into the metal oxide body to a depth proximate to an exterior surface of the metal oxide body, and the first electrode wire is parallel to, and spaced apart from, the second electrode wire.