公开(公告)号：US20220349862A1

公开(公告)日：2022-11-03

申请号：US17861560

申请日：2022-07-11

Applicant: MSA Technology, LLC

Inventor： Robert Kevin Sexton ,  Nicholas Emidio Ciccone ,  Jerin Miller

IPC: G01N29/46 ,  G01N29/04 ,  G01N29/48

Abstract: A method of detecting at least a blockage status in a porous member separating a measurement chamber of a device including a gas sensor positioned within the measurement chamber which is responsive to an analyte in an ambient environment to be sampled, includes emitting pressure waves from a pressure wave source which travel within the measurement chamber, measuring a first response via a first sensor responsive to pressure waves positioned at a first position within the measurement chamber, measuring a second response via a second sensor at a second position, different from the first position, and in fluid connection with the pressure wave source, determining the blockage status of the porous member based upon a functional relation of the first response and the second response.

公开(公告)号：US11415562B2

公开(公告)日：2022-08-16

申请号：US16874018

申请日：2020-05-14

Applicant: MSA Technology, LLC

Inventor： Robert Kevin Sexton ,  Nicholas Emidio Ciccone ,  Jerin Miller

IPC: G01N29/46 ,  G01N29/04 ,  G01N29/48

Abstract: A method of detecting at least a blockage status in a porous member separating a measurement chamber of a device including a gas sensor positioned within the measurement chamber which is responsive to an analyte in an ambient environment to be sampled, includes emitting pressure waves from a pressure wave source which travel within the measurement chamber, measuring a first response via a first sensor responsive to pressure waves positioned at a first position within the measurement chamber, measuring a second response via a second sensor at a second position, different from the first position, and in fluid connection with the pressure wave source, determining the blockage status of the porous member based upon a functional relation of the first response and the second response.

公开(公告)号：US12055521B2

公开(公告)日：2024-08-06

申请号：US17861560

申请日：2022-07-11

Applicant: MSA Technology, LLC

Inventor： Robert Kevin Sexton ,  Nicholas Emidio Ciccone ,  Jerin Miller

IPC: G01N29/46 ,  G01N29/04 ,  G01N29/48

CPC classification number: G01N29/46 ,  G01N29/04 ,  G01N29/48 ,  G01N2291/012

Abstract: A method of detecting at least a blockage status in a porous member separating a measurement chamber of a device including a gas sensor positioned within the measurement chamber which is responsive to an analyte in an ambient environment to be sampled, includes emitting pressure waves from a pressure wave source which travel within the measurement chamber, measuring a first response via a first sensor responsive to pressure waves positioned at a first position within the measurement chamber, measuring a second response via a second sensor at a second position, different from the first position, and in fluid connection with the pressure wave source, determining the blockage status of the porous member based upon a functional relation of the first response and the second response.

公开(公告)号：US10788458B2

公开(公告)日：2020-09-29

申请号：US15394566

申请日：2016-12-29

Applicant: MSA TECHNOLOGY, LLC

Inventor： Jerin Miller ,  Ryan Alan Sherry ,  Robert Kevin Sexton ,  Robert Eric Uber

IPC: G01N29/04 ,  G01N29/07 ,  G01N29/34 ,  G01N29/11 ,  G01N33/00 ,  G01N21/17

Abstract: A method of detecting at least a partial blockage in a porous member separating an inner chamber of a device having a gas sensor responsive to an analyte positioned within the inner chamber and an ambient environment includes emitting pressure waves within the inner chamber and measuring a change in phase of a response via a sensor responsive to pressure waves.

公开(公告)号：US10788457B2

公开(公告)日：2020-09-29

申请号：US15394534

申请日：2016-12-29

Applicant: MSA TECHNOLOGY, LLC

Inventor： Jerin Miller ,  Ryan Alan Sherry ,  Robert Kevin Sexton ,  Robert Eric Uber

IPC: G01N29/04 ,  G01N29/11 ,  G01N29/07 ,  G01N29/34 ,  G01N33/00 ,  G01N21/17

Abstract: A method of detecting at least a partial blockage in a porous member separating an inner chamber of a device having a gas sensor responsive to an analyte positioned within the inner chamber and an ambient environment includes emitting pressure waves within the inner chamber and measuring a response via a sensor responsive to pressure waves positioned within the inner chamber.

公开(公告)号：US10234417B2

公开(公告)日：2019-03-19

申请号：US15012919

申请日：2016-02-02

Applicant: MSA TECHNOLOGY, LLC

Inventor： Brian Keith Davis ,  Michael Alvin Brown ,  Jerin Miller ,  Ryan Alan Sherry

IPC: G01N27/407 ,  G01N27/404 ,  G01N33/00

Abstract: A method of operating a sensor to detect an analyte in an environment, wherein the sensor includes a working electrode and circuitry in operative connection with the working electrode, includes performing a sensor interrogation cycle including applying electrical energy to the working electrode to generate a non-faradaic current, measuring a response to the generation of the non-faradaic current to determine a state of the sensor, and actively controlling the circuitry to dissipate the non-faradaic current.