Oxygen sensor with higher resistance to repeated thermal-shocks

Details Oxygen sensor with higher resistance to repeated thermal-shocks Oxygen sensor with higher resistance to repeated thermal-shocks

1993-03-15

1994-02-22

Tung, T.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204426, G01N 27419

Patent

active

052883892

ABSTRACT:
An oxygen sensor including, at least, a) an oxygen pump element having a solid electrolyte plate and two porous electrodes, one on each surface of the solid electrolyte plate, b) a gas diffusion chamber facing one of the porous electrodes, and c) a gas diffusion path connecting the gas diffusion chamber and the ambience of the oxygen sensor, is defined its thickness between 0.7 to 1.25 mm, and its width between 2.8 to 4.0 mm. The restricted size renders higher resistance against repeated thermal shocks, and shorter warming-up time, which leads to greater accuracy and higher responsiveness in the oxygen content measurement.

REFERENCES:
patent: 4450065 (1984-05-01), Yamada et al.
patent: 4505806 (1985-03-01), Yamada
patent: 4505807 (1985-03-01), Yamada
patent: 4574627 (1986-03-01), Sakurai et al.
patent: 4722779 (1988-02-01), Yamada et al.
patent: 4765880 (1988-08-01), Hayakawa et al.

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