Method and instrument for measuring differential oxygen concentr

Details Method and instrument for measuring differential oxygen concentr Method and instrument for measuring differential oxygen concentr

1994-10-18

1996-08-06

Brock, Michael J.

Measuring and testing

Gas analysis

With compensation detail

73 2321, G01N 2704

Patent

active

055422845

ABSTRACT:
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.

REFERENCES:
patent: 3300282 (1967-01-01), Risk et al.
patent: 3585842 (1971-06-01), Roof
patent: 5065613 (1991-11-01), Lehnert et al.
patent: 5270009 (1993-12-01), Nakamori et al.

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