Measuring and testing – Gas analysis – By thermal property
Patent
1997-06-11
1999-03-09
Williams, Hezron E.
Measuring and testing
Gas analysis
By thermal property
73 2332, 7320425, 73 2331, G01N 2712, H01C 710, H01L 700
Patent
active
058803548
ABSTRACT:
A gas sensor for being placed into a gas stream such that the gas sensor is insensitive to any specific rotational orientation about a longitudinal axis of the sensor within the gas stream. The sensor includes 1) a base having an axis that is perpendicular to the gas stream, 2) a sensor element on the base, 3) a catalyzed sensor element on the base proximate the sensor element, for creating an exothermic reaction upon contacting the gas stream thereby forming a heated gas stream portion, and 4) the catalyzed sensor element and the sensor element are positioned on the base with a sufficient axial separation therebetween so that as the base rotates about the axis, the heated gas stream portion will not contact the sensor element. In particular, the base has a second axis being perpendicular to the axis and separating the sensor element from the catalyzed sensor element. Additionally, the invention provides a device that may have both the sensor element and the catalyzed sensor element including a longitudinal axis. Wherein, both the sensor element and the catalyzed sensor element may have many different shapes. Both the sensor element and the catalyzed sensor element may have two or three sides that are coextensive with at least one void. As a result of having a void the base may include a bridge that connects at least one side of the sensor element and the catalyzed sensor element to the base.
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Blakesley Patrick B.
Newman Robert L.
CTS Corporation
Starkweather Michael W.
Wiggins J. David
Williams Hezron E.
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