公开(公告)号：WO2019094605A1

公开(公告)日：2019-05-16

申请号：PCT/US2018/059847

申请日：2018-11-08

Applicant: ITRON, INC.

Inventor： STAMBAUGH, Mark, A.

IPC: G01N21/3504

CPC classification number: G01N21/3518 ,  G01N21/0303 ,  G01N21/3504 ,  G01N33/0047 ,  G01N2201/062 ,  G01N2201/0662 ,  G01N2201/0686

Abstract: Systems and methods for verifying that light absorption is caused by a targeted gaseous chemical compound. A first transmittance of light, either generated at, or filtered to, a first wavelength range and a second transmittance of light, either generated at, or filtered to, a second wavelength range are measured by first and second photon detectors. A ratio of the first and second measured transmittance is determined and that ratio is compared to a transmittance ratio associated with a targeted gaseous chemical compound to verify that the light absorption is caused by the targeted gaseous chemical compound.