公开(公告)号：US20180128763A1

公开(公告)日：2018-05-10

申请号：US15343956

申请日：2016-11-04

Applicant: MSA TECHNOLOGY, LLC

Inventor： Meghan E. Swanson ,  Michael Alvin Brown

IPC: G01N27/16 ,  G01N31/10 ,  G01N31/12

CPC classification number: G01N27/16 ,  F01N11/00 ,  G01M15/102 ,  G01N25/4873 ,  G01N27/124 ,  G01N27/407 ,  G01N31/10 ,  G01N31/12

Abstract: A combustible gas sensor includes a first sensing element, which includes a catalyst and a heating element in operative connection with the catalyst to heat the catalyst above a temperature to combust gas analytes of interest, and electronic circuitry in operative connection with the heating element of the first sensing element to periodically cycle the first sensing element between a temperature above the temperature to combust the analytes of interest and a temperature at which the catalyst is substantially inactive to catalyze oxidative combustion of the analytes of interest. The electronic circuitry is adapted to determine a species of at least one of the gas analytes of interest from a first output of the combustible gas sensor during an ON time within a cycle duration. The electronic circuitry is further adapted to determine a concentration of the species of gas from a second output of the combustible gas sensor.