公开(公告)号：US20170131150A1

公开(公告)日：2017-05-11

申请号：US14934998

申请日：2015-11-06

Applicant: Rosemount Inc.

Inventor： Ralf Thies ,  Richard Llagas ,  Ulrich Thiel ,  Dirk W. Bauschke

IPC: G01K1/08 ,  G01K7/16

CPC classification number: G01K1/08 ,  G01F1/00 ,  G01K7/16 ,  G01L1/00 ,  G01L19/003

Abstract: An apparatus for sensing a process variable, includes a housing and a process variable sensor that has an electrical characteristic that changes with a process variable. A first sealed portion is configured to be exposed to a process fluid. The process variable sensor is mounted relative to the first sealed portion. A second sealed portion couples the first sealed portion to the housing. The second sealed portion has at least one seal that fluidically isolates the first sealed portion from the housing.

公开(公告)号：US11892370B2

公开(公告)日：2024-02-06

申请号：US17482973

申请日：2021-09-23

Applicant: Rosemount Inc.

Inventor： Pavel Shuk ,  Dirk W. Bauschke ,  David Loberg

IPC: G01M15/10 ,  G01N33/00 ,  G01N27/409

CPC classification number: G01M15/106 ,  G01N27/409 ,  G01N33/0062 ,  G01N33/0073

Abstract: A process oxygen analyzer includes a process probe extendible into a flow of process combustion exhaust, the process probe having an oxygen sensor measurement cell. Measurement circuitry is coupled to the oxygen sensor measurement cell and configured to obtain a non-corrected indication of oxygen concentration relative to a combustion process based on an electrical characteristic of the oxygen sensor measurement cell. A controller is operably coupled to the measurement circuitry and is configured to obtain an indication of process pressure and selectively provide a corrected oxygen concentration output based on non-corrected indication of oxygen concentration and the indication of process pressure. A method of providing a process oxygen concentration using a process oxygen analyzer coupled to an industrial combustion process is also disclosed.