公开(公告)号：US12188915B2

公开(公告)日：2025-01-07

申请号：US18140292

申请日：2023-04-27

Applicant: MSA TECHNOLOGY, LLC

Inventor： Michael Alvin Brown ,  Brian Keith Davis

IPC: G01N33/00

Abstract: A method of operating a gas sensor for a gas analyte including a sensing component includes, in a first mode, interrogating the sensor by periodically applying an electrical signal to the sensing component of the sensor, measuring sensor response to the electrical signal which is indicative of a sensitivity of the sensor each time the electrical signal is applied to the sensing component, determining whether one or more thresholds have been exceeded based upon the sensor response determined each time the electrical signal is applied to the sensing component, and entering a second mode, different from the first mode in analysis of the sensor response to the periodically applied electrical signals, if one or more thresholds are exceeded.

公开(公告)号：US11740251B2

公开(公告)日：2023-08-29

申请号：US17873671

申请日：2022-07-26

Applicant: MSA TECHNOLOGY, LLC

Inventor： Towner Bennett Scheffler ,  Michael Alvin Brown ,  Andrew E. Nalepa ,  Brian Keith Davis

IPC: G01N35/00 ,  G01N33/00 ,  G01N33/497

CPC classification number: G01N35/00693 ,  G01N33/007 ,  G01N33/497

Abstract: A method of operating a sensor system including at least one sensor to detect a first gas analyte and a control system includes electronically interrogating the sensor to determine the operational status thereof and, based upon the results of the electronic interrogation, the control system initiating an automated maintenance procedure for the sensor.

公开(公告)号：US11740201B2

公开(公告)日：2023-08-29

申请号：US17163710

申请日：2021-02-01

Applicant: MSA TECHNOLOGY, LLC

Inventor： Towner Bennett Scheffler ,  Michael Alvin Brown ,  Brian Keith Davis

IPC: G01N27/404 ,  G01N27/26 ,  G01N33/00 ,  G01N33/497 ,  G01N27/417

CPC classification number: G01N27/26 ,  G01N27/4175 ,  G01N33/007 ,  G01N33/497 ,  Y10T29/49826

Abstract: A system includes a system housing including an inlet, at least one gas sensor responsive to a first analyte gas other than oxygen within the system housing and in fluid connection with the inlet, and a sensor responsive to oxygen within the system housing and in fluid connection with the inlet. The sensor responsive to oxygen is formed to be chemically separate from the at least one gas sensor responsive to the first analyte gas other than oxygen. The sensor responsive to oxygen is responsive to a change in the concentration of oxygen arising from creation of a driving force in the vicinity of the inlet to provide an indication of a state of a transport path between the inlet of the system and the at least one gas sensor responsive to the first analyte gas other than oxygen.

公开(公告)号：US10551396B2

公开(公告)日：2020-02-04

申请号：US15715610

申请日：2017-09-26

Applicant: MSA TECHNOLOGY, LLC

Inventor： Towner Bennett Scheffler ,  Michael Alvin Brown ,  Andrew E. Nalepa ,  Brian Keith Davis

IPC: G01N35/00 ,  G01N33/497 ,  G01N33/00

Abstract: A method of operating a sensor system including at least one sensor for detecting an analyte gas and a control system includes electronically interrogating the sensor to determine the operational status thereof and upon determining that the operational status is non-conforming based upon one or more predetermined thresholds, the control system initiating an automated calibration of the sensor with the analyte gas or a simulant gas.