Apparatus for measuring combustible gas concentration in flue ga

Details Apparatus for measuring combustible gas concentration in flue ga Apparatus for measuring combustible gas concentration in flue ga

1988-03-01

1989-05-09

Tung, T.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204421, 204424, G01N 2746

Patent

active

048286737

ABSTRACT:
An apparatus having a combustible gas detecting sensor and an O.sub.2 gas detecting sensor which are provided separately of each other, the combustible gas detecting sensor made of zirconia solid electrolyte and having an electrode exposed to reference gas and a molybdenum disilicide electrode exposed to gas to be measured, wherein the combustible gas detecting sensor is heated to an operating temperature which is different from the heating temperature of the O.sub.2 detecting sensor, thereby to measure the concentration of a wide range of combustible gas in the gas to be measured which is in an O.sub.2 gas rich state, by calculation based on the respective outputs of the two sensors.

REFERENCES:
patent: 3366554 (1968-01-01), Linblad
patent: 3578578 (1971-05-01), von Krusenstierna
patent: 3791936 (1974-02-01), Pebler et al.
patent: 4049524 (1977-09-01), Togawa et al.

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