公开(公告)号：US20180353885A1

公开(公告)日：2018-12-13

申请号：US15995775

申请日：2018-06-01

Applicant: MSA TECHNOLOGY, LLC

Inventor： Meghan E. Swanson ,  Andrew Sassani

IPC: B01D39/20 ,  B01D35/30 ,  B01D35/18 ,  G01N27/16

CPC classification number: B01D39/2003 ,  B01D35/18 ,  B01D35/308 ,  B01D37/02 ,  B01D37/04 ,  B01D39/2027 ,  B01D53/48 ,  B01D53/52 ,  B01D2239/0464 ,  B01D2239/0478 ,  B01D2239/10 ,  B01D2253/106 ,  B01D2253/112 ,  B01D2253/25 ,  B01D2257/304 ,  B01D2257/55 ,  B01D2279/60 ,  G01N27/16

Abstract: A filter includes a filter media material through which a gas is transportable, a first metal salt immobilized upon the filter media material and a second metal salt immobilized upon the filter media material, wherein the first metal salt and the second metal salt are immobilized upon the filter media material from an aqueous solution comprising the first metal salt and the second metal salt.

公开(公告)号：US12061161B2

公开(公告)日：2024-08-13

申请号：US18205207

申请日：2023-06-02

Applicant: MSA TECHNOLOGY, LLC

Inventor： Daniel D. Santoro, Jr. ,  Meghan E. Swanson ,  Michael Alvin Brown

IPC: G01N27/18 ,  G01N27/16

CPC classification number: G01N27/18 ,  G01N27/16

Abstract: A gas sensor device includes a sensing element including a heating element and electronic circuitry in connection with the heating element. The sensing element forms a resistive element in a circuit of the electronic circuitry. The electronic circuity operates the sensing element in a trigger mode via a pulsed energy input to the heating element at a first duty cycle and in a primary mode via a pulsed energy input to the heating element at a second duty cycle, which is greater than the first duty cycle. The electronic circuitry is further configured to measure a response of the sensing element over time during each pulse of a plurality of pulses of the pulsed energy input. The primary mode is entered upon measurement of a value of a response at or above a threshold value in the trigger mode of operation.

公开(公告)号：US11846617B2

公开(公告)日：2023-12-19

申请号：US18092396

申请日：2023-01-02

Applicant: MSA TECHNOLOGY, LLC

Inventor： Meghan E. Swanson ,  Daniel D. Santoro, Jr. ,  Michael Alvin Brown ,  Mark Flori Zanella, Sr. ,  Christopher S. Detka

IPC: G01N33/00 ,  G01N27/16 ,  G01N27/404

CPC classification number: G01N33/0031 ,  G01N27/16 ,  G01N27/404 ,  G01N33/0006 ,  G01N33/0013 ,  G01N33/0016 ,  G01N33/0075

Abstract: A system for detecting an analyte gas in an environment includes a first gas sensor, a first contaminant sensor separate and spaced from the first gas sensor, and electronic circuitry in electrical connection with the first gas sensor to determine if the analyte gas is present based on a response of the first gas sensor. The electronic circuitry is further in electrical connection with the first contaminant sensor to measure a response of the first contaminant sensor over time. The measured response of the first contaminant sensor varies with an amount of one or more contaminants to which the system has been exposed in the environment over time.

公开(公告)号：US11761935B2

公开(公告)日：2023-09-19

申请号：US17188297

申请日：2021-03-01

Applicant: MSA TECHNOLOGY, LLC

Inventor： Mark Flori Zanella, Sr. ,  Michael Alvin Brown ,  Meghan E. Swanson ,  Daniel D. Santoro, Jr. ,  Jeff Audia ,  Ryan Alan Sherry

IPC: G01N27/16 ,  G01N33/00

CPC classification number: G01N33/0027 ,  G01N27/16 ,  G01N33/007

Abstract: A combustible gas sensor for detecting an analyte gas includes a first element including a first electric heating element, a first support structure on the first electric heating element and a first catalyst supported on the first support structure and electronic circuitry in electrical connection with the first element. The electronic circuitry is configured to provide energy to the first element to heat the first element to at least a first temperature at which the first catalyst catalyzes combustion of the analyte gas and to determine if the analyte gas is present based on a response of the first element to being heated to at least the first temperature. The electronic circuitry is further configured to apply an interrogation pulse to the first element in which energy to the first element is increased or decreased to induce an associated response from the first element.

公开(公告)号：US20230152289A1

公开(公告)日：2023-05-18

申请号：US18092396

申请日：2023-01-02

Applicant: MSA TECHNOLOGY, LLC

Inventor： Meghan E. Swanson ,  Daniel D. Santoro, JR. ,  Michael Alvin Brown ,  Mark Flori Zanella, SR. ,  Christopher S. Detka

IPC: G01N33/00 ,  G01N27/16 ,  G01N27/404

CPC classification number: G01N33/0031 ,  G01N27/16 ,  G01N27/404 ,  G01N33/0006 ,  G01N33/0013 ,  G01N33/0016 ,  G01N33/0075

Abstract: A system for detecting an analyte gas in an environment includes a first gas sensor, a first contaminant sensor separate and spaced from the first gas sensor, and electronic circuitry in electrical connection with the first gas sensor to determine if the analyte gas is present based on a response of the first gas sensor. The electronic circuitry is further in electrical connection with the first contaminant sensor to measure a response of the first contaminant sensor over time. The measured response of the first contaminant sensor varies with an amount of one or more contaminants to which the system has been exposed in the environment over time.

公开(公告)号：US11268923B2

公开(公告)日：2022-03-08

申请号：US16437615

申请日：2019-06-11

Applicant: MSA TECHNOLOGY, LLC

Inventor： Meghan E. Swanson ,  Daniel D. Santoro, Jr. ,  Michael Alvin Brown ,  Mark Fiori Zanella, Sr.

IPC: G01N27/14 ,  G01N25/02

Abstract: A sensor system for detecting mass deposition from a gaseous environment includes a first sensor element including a first electrically conductive heating component and a first interface structure on the first electrically conductive heating component. The sensor system further includes electronic circuitry in connection with the first electrically conductive heating component. The electronic circuitry is configured to provide energy to the first electrically conductive heating component to heat the first sensor element and to measure a thermodynamic response of the first sensor element, which varies with mass deposition of one or more compositions on the first interface structure.

公开(公告)号：US20210181135A1

公开(公告)日：2021-06-17

申请号：US16711413

申请日：2019-12-11

Applicant: MSA TECHNOLOGY, LLC

Inventor： Daniel D. Santoro, JR. ,  Meghan E. Swanson ,  Michael Alvin Brown

IPC: G01N27/18 ,  G01N27/419

Abstract: A method of operating a sensing element including a heating element in operative connection with electronic circuitry, wherein the sensing element forms a resistive element in a circuit of the electronic circuitry, includes, in at least a first phase, activating the electronic circuitry to heat the sensing element to a temperature at which the sensing element is responsive to an analyte gas via energy input to the heating element in a pulsed manner. A constant resistance setpoint is set for the sensing element and energy through the circuit is variably controlled via the pulsed energy input toward achieving the constant resistance setpoint. The method further includes measuring a response of the sensing element over time to the pulsed energy input.

公开(公告)号：US20210109052A1

公开(公告)日：2021-04-15

申请号：US17130533

申请日：2020-12-22

Applicant: MSA TECHNOLOGY, LLC

Inventor： Michael Alvin Brown ,  Meghan E. Swanson ,  Mark Flori Zanella, SR.

IPC: G01N27/16 ,  G01N25/30

Abstract: A system includes a primary combustible gas sensor and a trigger combustible gas sensor including a first trigger element of low-thermal-mass which includes a first trigger heating element in operative connection with electronic circuitry. The trigger combustible gas sensor also includes a second trigger element of low thermal mass including a second trigger heating element. The second trigger element is also in operative connection with the electronic circuitry. The electronic circuitry further has a first trigger mode of operating in which the first trigger element is heated to a temperature at or above a temperature at which the first trigger element causes combustion of the at least one combustible gas analyte and wherein the second trigger element is operated as a trigger compensating element. The electronic circuitry is configured to operate the trigger combustible gas sensor to detect a value of a response at or above a threshold value. The primary combustible gas sensor is activated from a low-power state upon the threshold value being detected by the trigger combustible gas sensor.

公开(公告)号：US10948469B2

公开(公告)日：2021-03-16

申请号：US15597859

申请日：2017-05-17

Applicant: MSA TECHNOLOGY, LLC

Inventor： Mark Flori Zanella, Sr. ,  Michael Alvin Brown ,  Meghan E. Swanson ,  Daniel D. Santoro, Jr. ,  Jeff Audia ,  Ryan Alan Sherry

IPC: G01N27/16 ,  G01N33/00

Abstract: A combustible gas sensor for detecting an analyte gas includes a first element including a first electric heating element, a first support structure on the first electric heating element and a first catalyst supported on the first support structure and electronic circuitry in electrical connection with the first element. The electronic circuitry is configured to provide energy to the first element to heat the first element to at least a first temperature at which the first catalyst catalyzes combustion of the analyte gas and to determine if the analyte gas is present based on a response of the first element to being heated to at least the first temperature. The electronic circuitry is further configured to apply an interrogation pulse to the first element in which energy to the first element is increased or decreased to induce an associated response from the first element.

公开(公告)号：US10234412B2

公开(公告)日：2019-03-19

申请号：US15343956

申请日：2016-11-04

Applicant: MSA TECHNOLOGY, LLC

Inventor： Meghan E. Swanson ,  Michael Alvin Brown

IPC: G01N27/16 ,  G01N31/10 ,  G01N31/12 ,  G01N27/407 ,  F01N11/00 ,  G01N25/20 ,  G01M15/10 ,  G01N25/48 ,  G01N27/12

Abstract: A combustible gas sensor includes a first sensing element, which includes a catalyst and a heating element in operative connection with the catalyst to heat the catalyst above a temperature to combust gas analytes of interest, and electronic circuitry in operative connection with the heating element of the first sensing element to periodically cycle the first sensing element between a temperature above the temperature to combust the analytes of interest and a temperature at which the catalyst is substantially inactive to catalyze oxidative combustion of the analytes of interest. The electronic circuitry is adapted to determine a species of at least one of the gas analytes of interest from a first output of the combustible gas sensor during an ON time within a cycle duration. The electronic circuitry is further adapted to determine a concentration of the species of gas from a second output of the combustible gas sensor.