ASM output ultrasonic oxygen sensor

Details ASM output ultrasonic oxygen sensor ASM output ultrasonic oxygen sensor

2006-04-25

2009-08-18

Larkin, Daniel S (Department: 2856)

Measuring and testing

Gas analysis

By vibration

C073S024060, C073S597000

Reexamination Certificate

active

07574894

ABSTRACT:
A gas measuring method, apparatus and system for measuring a concentration of a gas of interest is disclosed. The gas concentration is based on a propagation delay of a sonic or ultrasonic wave as the wave travels through the gas. The propagation delay is measured such that delay contributions from sources other than the gas itself are canceled. A sensor in accordance with the invention includes an sonic or ultrasonic transmitter and receiver, and a control module for performing calculations. The sensor can be used in various applications, including on-board inert gas generating systems (OBIGGS).

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Written Opinion for International Application No. PCT/US2007/067394 dated Mar. 5, 2008.

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