Patents Assigned to Sensor Electronics Corporation
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Patent number: 9057690Abstract: An electrochemical gas sensor testing device that includes a test signal generator that generates a multiplexed signal that includes a first test signal that includes alternating current (AC) and is free from a direct current (DC) component and a second signal that includes a DC bias voltage, an electrochemical cell that includes a counter electrode, a sensing electrode, and an electrolyte, the counter electrode and the sensing electrode being in electrical communication with the electrolyte and each other, the counter electrode being in electrical communication with the signal generator to receive the multiplexed signal generated by the signal generator, and a processor that receives an AC signal from the sensing electrode and that analyzes the AC signal.Type: GrantFiled: December 15, 2011Date of Patent: June 16, 2015Assignee: Sensor Electronics CorporationInventor: Patrick G. Smith
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Publication number: 20120086502Abstract: An electrochemical gas sensor testing device that includes a test signal generator that generates a multiplexed signal that includes a first test signal that includes alternating current (AC) and is free from a direct current (DC) component and a second signal that includes a DC bias voltage, an electrochemical cell that includes a counter electrode, a sensing electrode, and an electrolyte, the counter electrode and the sensing electrode being in electrical communication with the electrolyte and each other, the counter electrode being in electrical communication with the signal generator to receive the multiplexed signal generated by the signal generator, and a processor that receives an AC signal from the sensing electrode and that analyzes the AC signal.Type: ApplicationFiled: December 15, 2011Publication date: April 12, 2012Applicant: SENSOR ELECTRONICS CORPORATIONInventor: Patrick G. Smith
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Patent number: 8097146Abstract: An electrochemical gas sensor testing device that includes a test signal generator that generates a multiplexed signal that includes a first test signal that includes alternating current (AC) and is free from a direct current (DC) component and a second signal that includes a DC bias voltage, an electrochemical cell that includes a counter electrode, a sensing electrode, and an electrolyte, the counter electrode and the sensing electrode being in electrical communication with the electrolyte and each other, the counter electrode being in electrical communication with the signal generator to receive the multiplexed signal generated by the signal generator, and a processor that receives an AC signal from the sensing electrode and that analyzes the AC signal.Type: GrantFiled: March 27, 2008Date of Patent: January 17, 2012Assignee: Sensor Electronics CorporationInventor: Patrick G. Smith
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Publication number: 20090242398Abstract: An electrochemical gas sensor testing device that includes a test signal generator that generates a multiplexed signal that includes a first test signal that includes alternating current (AC) and is free from a direct current (DC) component and a second signal that includes a DC bias voltage, an electrochemical cell that includes a counter electrode, a sensing electrode, and an electrolyte, the counter electrode and the sensing electrode being in electrical communication with the electrolyte and each other, the counter electrode being in electrical communication with the signal generator to receive the multiplexed signal generated by the signal generator, and a processor that receives an AC signal from the sensing electrode and that analyzes the AC signal.Type: ApplicationFiled: March 27, 2008Publication date: October 1, 2009Applicant: Sensor Electronics CorporationInventor: Patrick G. Smith
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Patent number: 7132657Abstract: A gas detector that includes at least one source of infrared radiation, at least two analytical detectors, each analytical detector adapted to provide an output signal indicative of a first gas of interest and positioned to receive radiation from the source of radiation, at least one reference detector adapted to receive radiation of a predetermined wavelength, a sample chamber for receiving a gaseous sample, and an optical path length disposed between the source of radiation and the analytical detectors and passing through the sample chamber.Type: GrantFiled: February 9, 2004Date of Patent: November 7, 2006Assignee: Sensor Electronics CorporationInventor: Patrick G. Smith
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Patent number: 6414310Abstract: A circuit for measuring the relative absorption signals from an infrared detector to measure gas concentrations in the detector, wherein an absorption gas wavelength signal is compared to a reference gas wavelength signal, through circuits and a computer processor, together having automatic compensation for absorption variables and which permit the measurement of gas absorption by use of Beer's Law equations.Type: GrantFiled: October 29, 1999Date of Patent: July 2, 2002Assignee: Sensor Electronics CorporationInventor: Patrick George Smith