Oxygen depletion sensor

Measuring and testing – Gas analysis

Reexamination Certificate

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Reexamination Certificate

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07434447

ABSTRACT:
In certain embodiments, an apparatus includes an oxygen depletion sensor (ODS) includes a thermocouple, a first nozzle configured to direct heat from combustion of a first gas, liquid, or combination thereof to the thermocouple, a second nozzle configured to direct heat from combustion of a second gas, liquid, or combination thereof to the thermocouple, and a first igniter.

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