公开(公告)号：WO2020251931A1

公开(公告)日：2020-12-17

申请号：PCT/US2020/036784

申请日：2020-06-09

Applicant: MSA TECHNOLOGY, LLC

Inventor： SWANSON, Meghan, E. ,  SANTORO, Jr., Daniel, D. ,  BROWN, Michael, Alvin ,  ZANELLA, Mark, Flori ,  DETKA, Christopher, S.

IPC: G01N27/14

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：WO2021118776A1

公开(公告)日：2021-06-17

申请号：PCT/US2020/061005

申请日：2020-11-18

Applicant: MSA TECHNOLOGY, LLC

Inventor： SANTORO, Daniel, D. ,  SWANSON, Meghan, E. ,  BROWN, Michael, Alvin

IPC: G01N27/16 ,  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：WO2020069317A1

公开(公告)日：2020-04-02

申请号：PCT/US2019/053458

申请日：2019-09-27

Applicant: MSA TECHNOLOGY, LLC

Inventor： BROWN, Michael, Alvin ,  DAVIS, Brian, Keith

IPC: G01N27/404 ,  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：WO2020251925A1

公开(公告)日：2020-12-17

申请号：PCT/US2020/036773

申请日：2020-06-09

Applicant: MSA TECHNOLOGY, LLC

Inventor： SWANSON, Meghan, E. ,  SANTORO, Daniel, D. ,  BROWN, Michael, Alvin ,  ZANELLA, Mark, Flori

IPC: G01N27/14

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：WO2018052743A1

公开(公告)日：2018-03-22

申请号：PCT/US2017/049900

申请日：2017-09-01

Applicant: MSA TECHNOLOGY, LLC

Inventor： DAVIS, Brian, Keith ,  BROWN, Michael, Alvin ,  ZANELLA, Mark, Flori Sr.

IPC: G01N27/404

CPC classification number: G01N27/3271 ,  G01N27/3274 ,  G01N27/4045 ,  G01N27/4078

Abstract: An electrochemical gas sensor includes a sensor housing having a plurality of inlet passages, wherein each of the plurality of inlet passages has a cross-sectional area of no greater than 11,309 μm 2 . The electrochemical gas sensor further includes a working electrode within the housing which is responsive to an analyte gas and an electrolyte within the sensor housing in ionic contact with the working electrode.

Abstract translation: 电化学气体传感器包括具有多个入口通道的传感器壳体，其中多个入口通道中的每一个具有不大于11309μm2 / s的横截面面积 >。 电化学气体传感器还包括壳体内的工作电极，该工作电极响应于分析物气体和传感器壳体内的与工作电极离子接触的电解质。

公开(公告)号：WO2020018526A1

公开(公告)日：2020-01-23

申请号：PCT/US2019/041989

申请日：2019-07-16

Applicant: MSA TECHNOLOGY, LLC

Inventor： BROWN, Michael, Alvin ,  SWANSON, Meghan, E. ,  ZANELLA Sr., Mark, Flori

IPC: G01N27/16

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：WO2018212966A1

公开(公告)日：2018-11-22

申请号：PCT/US2018/030056

申请日：2018-04-28

Applicant: MSA TECHNOLOGY, LLC

Inventor： ZANELLA, Mark, Flori, Sr. ,  BROWN, Michael, Alvin ,  SWANSON, Meghan, E. ,  SANTORO, Daniel ,  AUDIA, Jeff ,  SHERRY, Ryan, Alan

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：WO2018085026A1

公开(公告)日：2018-05-11

申请号：PCT/US2017/056716

申请日：2017-10-16

Applicant: MSA TECHNOLOGY, LLC

Inventor： SWANSON, Meghan, E. ,  BROWN, Michael, Alvin

IPC: G01N27/16 ,  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.

Abstract translation: 可燃气体传感器包括第一传感元件和第二传感元件，第一传感元件包括催化剂和加热元件，加热元件与催化剂可操作地连接以在高于温度的温度下加热催化剂以燃烧感兴趣的气体分析物， 与第一感测元件的加热元件操作性连接以周期性地使第一感测元件在高于用于燃烧感兴趣分析物的温度和催化剂基本上无活性的温度之间的温度之间循环，以催化感兴趣分析物的氧化燃烧。 电子电路适于在周期持续时间内的ON时间期间从可燃气体传感器的第一输出确定感兴趣的气体分析物中的至少一个的物种。 电子电路还适于从可燃气体传感器的第二输出确定气体种类的浓度。