Patents Assigned to Delphian Corporation
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Patent number: 7996159Abstract: A method, system, and apparatus for sensing gases includes a gas detector with at least one light emitter and at least one light detector configured to detect an intensity of light at wavelengths of light indicative of target gas(es). The system also includes a processor circuit and a data storage device in communication with the gas detector and configured to determine an amount of target gas in the volume of the gas-air mixture and to determine a lower explosive limit (“LEL”) level for at least one target gas in the gas-air mixture. The processor is configured to receive data regarding temperature and relative humidity of the gas-air mixture such that the processor circuit can adjust the LEL according to the temperature and humidity. Temperature and humidity sensors may be included to sense these conditions for inputting to the processor.Type: GrantFiled: September 10, 2008Date of Patent: August 9, 2011Assignee: Delphian CorporationInventor: Francois Mottier
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Publication number: 20100063748Abstract: A method, system, and apparatus for sensing gases includes a gas detector with at least one light emitter and at least one light detector configured to detect an intensity of light at wavelengths of light indicative of target gas(es). The system also includes a processor circuit and a data storage device in communication with the gas detector and configured to determine an amount of target gas in the volume of the gas-air mixture and to determine a lower explosive limit (“LEL”) level for at least one target gas in the gas-air mixture. The processor is configured to receive data regarding temperature and relative humidity of the gas-air mixture such that the processor circuit can adjust the LEL according to the temperature and humidity. Temperature and humidity sensors may be included to sense these conditions for inputting to the processor.Type: ApplicationFiled: September 10, 2008Publication date: March 11, 2010Applicant: Delphian CorporationInventor: Francois Mottier
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Patent number: 6545278Abstract: A gas detection system and method are provided for determining the type of gas present and the concentration of the gas in terms of a percentage of a specific level of the gas. This percentage level may be in terms of a lower explosive limit level of a combustible gas. The system generally includes a testing chamber, a detection channel apparatus, a memory for storing a plurality of gas signature tables, and a programmed controller for determining the identity and concentration level of a gas. The system and method further provide for the accurate determination of gas concentration level at very high and low concentration levels by weighted average computation.Type: GrantFiled: April 23, 1999Date of Patent: April 8, 2003Assignee: Delphian CorporationInventors: François Mottier, Scott Bruce
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Patent number: 4870855Abstract: Hazardous gas sensor assemblies having a reticulated foam splash guard, and reticulated foam splash guards for such hazardous gas assemblies.Type: GrantFiled: December 22, 1987Date of Patent: October 3, 1989Assignee: Delphian CorporationInventor: J. Howard Shafer
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Patent number: 4489590Abstract: Methods and apparatus for applying calibrating gas to a combustible gas sensor, in which a calibration enclosure is formed mechanically upon application of pressurized calibration gas.Type: GrantFiled: January 25, 1982Date of Patent: December 25, 1984Assignee: Delphian CorporationInventor: David M. Hadden
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Patent number: 4432224Abstract: Methods and apparatus for transforming nonlinear sensor response such as that of a hydrogen sulfide detector to provide a desired output signal as a polynomial signal function.Type: GrantFiled: April 19, 1982Date of Patent: February 21, 1984Assignee: Delphian CorporationInventor: Pekka M. Typpo
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Patent number: 4260950Abstract: A portable self-calibrating pH meter particularly adapted for use by unskilled operators in adverse environment conditions is disclosed which has a minimum of operator controls while preventing operator errors and while providing effective and accurate pH measurement.Type: GrantFiled: July 5, 1979Date of Patent: April 7, 1981Assignee: Delphian CorporationInventors: David M. Hadden, Eric S. Micko
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Patent number: 4157283Abstract: Methods and apparatus relating to systems for determination of sulfide species and hydrogen sulfide hazard potential of well drilling mud.Type: GrantFiled: August 30, 1977Date of Patent: June 5, 1979Assignee: Delphian CorporationInventor: Mark S. Zetter
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Patent number: 4154660Abstract: An apparatus for measuring electrochemical species in well drilling mud. The apparatus comprises a sulfide electrode, a pH electrode and a reference electrode. An electrical circuit is provided therefore which provides temperature compensation of the electrochemical signals. A method of using said apparatus to determine hydrogen sulfide in well drilling mud is disclosed.Type: GrantFiled: August 30, 1977Date of Patent: May 15, 1979Assignee: Delphian CorporationInventor: Eric S. Micko
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Patent number: 4124475Abstract: Methods and apparatus relating to systems for determination of sulfide species and hydrogen sulfide hazard potential of well drilling mud.Type: GrantFiled: August 30, 1977Date of Patent: November 7, 1978Assignee: Delphian CorporationInventors: Mark S. Zetter, Eric S. Micko