公开(公告)号：US11543396B2

公开(公告)日：2023-01-03

申请号：US16437487

申请日：2019-06-11

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

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：US20180335411A1

公开(公告)日：2018-11-22

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 Santoro ,  Jeff Audia ,  Ryan Alan Sherry

IPC: G01N33/00

CPC classification number: 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：US20230349853A1

公开(公告)日：2023-11-02

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

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 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：US11703473B2

公开(公告)日：2023-07-18

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 ,  G01N27/16

CPC classification number: G01N27/18 ,  G01N27/16

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：US20210181171A1

公开(公告)日：2021-06-17

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: G01N33/00 ,  G01N27/16

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：US10900922B2

公开(公告)日：2021-01-26

申请号：US16037882

申请日：2018-07-17

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：US10705041B2

公开(公告)日：2020-07-07

申请号：US16354413

申请日：2019-03-15

Applicant: MSA TECHNOLOGY, LLC

Inventor： Meghan E. Swanson ,  Michael Alvin Brown

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

Abstract: A combustible gas sensor including a first sensing element having a catalyst and a heating element and electronic circuitry in operative connection with the heating element of the first sensing element to change a temperature thereof between a temperature above a temperature to catalyze oxidative combustion and a temperature at which the catalyst is substantially inactive to catalyze oxidative combustion of a plurality of gas analytes of interest. The electronic circuitry being configured to determine a species of at least one of the plurality of gas analytes of interest from a first, dynamic output of the combustible gas sensor while the temperature of the first sensing element is changing. The electronic circuitry further being configured to determine a concentration of the species from a second output of the combustible gas sensor.

公开(公告)号：US20180335412A1

公开(公告)日：2018-11-22

申请号：US15597933

申请日：2017-05-17

Applicant: MSA TECHNOLOGY, LLC

Inventor： Mark Flori Zanella, SR. ,  Meghan E. Swanson ,  Daniel Santoro

IPC: G01N33/00

CPC classification number: G01N27/16 ,  G01N27/124 ,  G01N33/0016 ,  G01N33/0031 ,  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 operate in a first mode in which the first element is operated at a first temperature at which the first catalyst catalyzes combustion of the analyte gas, and in a second mode wherein the first element is operated at a second temperature which is below the temperature at which the first catalyst catalyzed combustion of the analyte gas but at which Joule heating of the first element occurs. The electronic circuitry is further configured to measure a variable in the second mode related to a mass of the first element.

公开(公告)号：US20200025701A1

公开(公告)日：2020-01-23

申请号：US16037882

申请日：2018-07-17

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：US20190212288A1

公开(公告)日：2019-07-11

申请号：US16354413

申请日：2019-03-15

Applicant: MSA TECHNOLOGY, LLC

Inventor： Meghan E. Swanson ,  Michael Alvin Brown

IPC: G01N27/16 ,  F01N11/00 ,  G01N27/407 ,  G01N31/12 ,  G01N31/10

Abstract: A combustible gas sensor including a first sensing element having a catalyst and a heating element and electronic circuitry in operative connection with the heating element of the first sensing element to change a temperature thereof between a temperature above a temperature to catalyze oxidative combustion and a temperature at which the catalyst is substantially inactive to catalyze oxidative combustion of a plurality of gas analytes of interest. The electronic circuitry being configured to determine a species of at least one of the plurality of gas analytes of interest from a first, dynamic output of the combustible gas sensor while the temperature of the first sensing element is changing. The electronic circuitry further being configured to determine a concentration of the species from a second output of the combustible gas sensor.