公开(公告)号：US09709499B1

公开(公告)日：2017-07-18

申请号：US14484870

申请日：2014-09-12

Applicant: Jimmy W. Crafton ,  Robert A. Forlines ,  Larry P. Goss ,  Stephen J. Palluconi ,  Jessica R. Webb ,  Nikolay Rogoshchenkov ,  Grant R. McMillan

Inventor： Jimmy W. Crafton ,  Robert A. Forlines ,  Larry P. Goss ,  Stephen J. Palluconi ,  Jessica R. Webb ,  Nikolay Rogoshchenkov ,  Grant R. McMillan

IPC: G01N21/64

CPC classification number: G01N21/643 ,  G01N21/6408 ,  G01N2021/6432 ,  G01N2201/0627 ,  G01N2201/13

Abstract: An oxygen number density or concentration sensor including a sampling luminescent oxygen probe located in a fluid environment, and a gas impermeable enclosure located in the fluid environment and a reference luminescent oxygen probe located within the gas impermeable enclosure, wherein the sampling and reference luminescent oxygen probes are formed by an ideal PSP. A predetermined fixed oxygen number density or concentration is provided within a medium contained in the gas impermeable enclosure. A detector receives signals corresponding to luminescent emissions of the sampling and reference probes. A processor determines a number density or concentration of oxygen in the fluid environment from a signal generated at the sampling probe with reference to an oxygen number density or concentration dependent signal generated at the reference probe.