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1.发明公开公开(公告)号：US20230349853A1
公开(公告)日：2023-11-02
申请号：US18205207
申请日：2023-06-02
申请人： MSA TECHNOLOGY, LLC
IPC分类号： G01N27/18
摘要： 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.
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公开(公告)号：US20210181171A1
公开(公告)日：2021-06-17
申请号：US17188297
申请日：2021-03-01
申请人： MSA TECHNOLOGY, LLC
发明人： Mark Flori Zanella, SR. , Michael Alvin Brown , Meghan E. Swanson , Daniel D. Santoro, JR. , Jeff Audia , Ryan Alan Sherry
摘要： 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.
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公开(公告)号：US20230152289A1
公开(公告)日：2023-05-18
申请号：US18092396
申请日：2023-01-02
申请人： MSA TECHNOLOGY, LLC
发明人： Meghan E. Swanson , Daniel D. Santoro, JR. , Michael Alvin Brown , Mark Flori Zanella, SR. , Christopher S. Detka
IPC分类号： G01N33/00 , G01N27/16 , G01N27/404
CPC分类号： G01N33/0031 , G01N27/16 , G01N27/404 , G01N33/0006 , G01N33/0013 , G01N33/0016 , G01N33/0075
摘要： 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.
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4.发明申请公开(公告)号：US20210181135A1
公开(公告)日：2021-06-17
申请号：US16711413
申请日：2019-12-11
申请人： MSA TECHNOLOGY, LLC
IPC分类号： G01N27/18 , G01N27/419
摘要： 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.
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