A method and instrument for measuring differential oxygen...

Details A method and instrument for measuring differential oxygen... A method and instrument for measuring differential oxygen...

G - Physics

01

N

G01N 27/27 (2006.01) G01N 33/00 (2006.01) G01N 33/497 (2006.01) G01N 33/18 (2006.01)

Patent

CA 2200953

An apparatus and method for measuring differential oxygen concentration between two flowing gas streams is described, A reference gas and a sample gas in separate gas flow paths are passed, at selected temperature, pressure and flow rate over a respective one of a pair of electrically connected oxygen sensors which produce an output signal proportional to the differential oxygen concentration between the sensors. The output signal may be amplified and recorded by any conventional means. An internal calibration system is also described.

L'invention concerne un appareil et un procédé de mesure de la différence de teneurs en oxygène entre deux écoulements de gaz. On fait passer un gaz de référence et à un gaz échantillon dans des trajets d'écoulement séparés à une température, à une pression et à un débit sélectionnés, sur un des deux capteurs d'oxygène connecté électriquement et produisant un signal de sortie proportionnel à la différence de teneurs en oxygène entre les capteurs. Le signal de sortie peut être amplifié et enregistrée par des moyens classiques. L'invention a pour objet également un système d'étalonnage interne.

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