G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 27/18 (2006.01)
Patent
CA 2316885
A method and apparatus for determining selected fluid properties including thermal conductivity, pressure and/or temperature using a single heater element of the sensor, and in a relatively short period of time. This is accomplished by measuring a variable phase or time lag between an input signal provided to the heater element and a subsequent transient temperature response of the heater element.
L'invention concerne un procédé et un dispositif permettant d'analyser des propriétés choisies d'un fluide, notamment la conductivité thermique, la pression et/ou la température, au moyen d'un élément chauffant unique du capteur et dans un délai relativement bref. A cette fin on mesure le décalage de phase ou de temps variable entre un signal d'entrée envoyé à l'élément chauffant et une réponse thermique transitoire subséquente de l'élément chauffant.
Bonne Ulrich
Kubisiak David
Matthys Robert J.
Schuldt Spencer B.
Gowling Lafleur Henderson Llp
Honeywell Inc.
Honeywell International Inc.
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