Project Title:

Non-Intrusive, Fast-Response Oxygen Monitoring

02.11-1322
Non-Intrusive, Fast-Response Oxygen Monitoring
System for High-Temperature Flows
Southwest Sciences, Inc.
1570 Pacheco Street - Suite E-11
Santa Fe
NM
87501
Alan C.
Stanton
(505-984-1322)
LaRC

Abstract:

This project addresses the need for fast-response measurement of molecular oxygen
concentrations in high-temperature flows for research on hypersonic air-breathing
engines as well as in combustion research and control. The innovation uses inexpensive,
room-temperature, laser diodes operating at near-infrared wavelengths and combined
with high-frequency, FM detection techniques. This approach should yield a non-intrusive
oxygen monitor with high sensitivity, wide dynamic range, the capability for an extremely
fast response. In comparison with other optically based methods, the proposed approach
uses exceptionally reliable and inexpensive laser sources which can readily be combined
with fiber optics for multi-point monitoring. The feasibility of the technique will
be evaluated in Phase I by measurements in a room-temperature absorption cell and
in the post-flame gases of a methane-oxygen flame.

Potential Commercial Application:

Potential Commercial Applications:  Applications may develop in monitoring or controlling
combustion processes,
ndustrial chemical plants, and toxic gas emissions.