US 12,281,999 B2
In-situ oxygen analyzer with solid electrolyte oxygen sensor and ancillary output
Pavel Shuk, Copley, OH (US); Chad M. McGuire, Shakopee, MN (US); Matthew Theisen, Shakopee, MN (US); and Philip Ostby, Cologne, MN (US)
Assigned to Rosemount Inc., Shakopee, MN (US)
Filed by Rosemount Inc., Shakopee, MN (US)
Filed on Dec. 21, 2020, as Appl. No. 17/129,049.
Application 17/129,049 is a continuation in part of application No. 16/535,741, filed on Aug. 8, 2019, abandoned.
Application 16/535,741 is a continuation of application No. 14/788,203, filed on Jun. 30, 2015, abandoned.
Prior Publication US 2021/0148853 A1, May 20, 2021
Int. Cl. G01N 27/416 (2006.01); G01N 27/407 (2006.01)
CPC G01N 27/416 (2013.01) [G01N 27/4075 (2013.01)] 20 Claims
OG exemplary drawing
 
16. An oxygen analysis system comprising:
a probe configured to extend into a source of combustion process gas;
an oxygen sensor disposed within the probe comprising:
a solid electrolyte positioned on an end of the oxygen sensor;
a sensing electrode mounted to one side of the solid electrolyte;
a reference electrode mounted to an opposite side of the solid electrolyte;
a plurality of catalytic beads that are configured to be disposed between a combustion process gas and the sensing electrode;
a controller configured to receive an oxygen sensor signal from the oxygen sensor, the controller being programmed to provide an oxygen concentration output;
a measurement circuitry operably coupled to the oxygen sensor and the controller, the measurement circuitry being configured to provide the controller with the oxygen sensor signal based on an electrical response of the oxygen sensor; and
wherein the controller is configured to compare the oxygen sensor signal to at least one threshold to determine an ancillary condition to detect a behavior of the oxygen sensor concentration output over time and provide at least one ancillary output indicative of the ancillary condition.