Measuring and testing – Gas analysis – Gas of combustion
Reexamination Certificate
2005-03-08
2005-03-08
Williams, Hezron (Department: 2856)
Measuring and testing
Gas analysis
Gas of combustion
C073S023200
Reexamination Certificate
active
06862915
ABSTRACT:
A combustion gas analyzer for measuring the concentration of a gas constituent in an exhaust gas stream is provided. The gas analyzer includes a sensor cell assembly coupled to a transmitter having electrical circuitry configured to provide an output of the concentration of the gas constituent as sensed by the sensor cell assembly. The combustion gas analyzer also includes a filter substantially enclosing the sensor cell assembly and a conduit coupled to the filter at a first end of the conduit and coupled to a valve assembly at a second end of the conduit. The conduit is used for supplying a calibration gas to the sensor cell assembly or for supplying a blow-back gas used to purge the filter.
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Keyes Marion A.
Staphanos Stephen T.
Frank Rodney
Rosemount Analytical Inc.
Westman Champlin & Kelly P.A.
Williams Hezron
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