GB8611272D0 - Selective chemical detection - Google Patents

Selective chemical detection

Info

Publication number
GB8611272D0
GB8611272D0 GB868611272A GB8611272A GB8611272D0 GB 8611272 D0 GB8611272 D0 GB 8611272D0 GB 868611272 A GB868611272 A GB 868611272A GB 8611272 A GB8611272 A GB 8611272A GB 8611272 D0 GB8611272 D0 GB 8611272D0
Authority
GB
United Kingdom
Prior art keywords
chemical detection
selective chemical
selective
detection
chemical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB868611272A
Other versions
GB2175399A (en
GB2175399B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
US Department of Energy
Original Assignee
US Department of Energy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by US Department of Energy filed Critical US Department of Energy
Publication of GB8611272D0 publication Critical patent/GB8611272D0/en
Publication of GB2175399A publication Critical patent/GB2175399A/en
Application granted granted Critical
Publication of GB2175399B publication Critical patent/GB2175399B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
    • G01N27/122—Circuits particularly adapted therefor, e.g. linearising circuits
    • G01N27/123—Circuits particularly adapted therefor, e.g. linearising circuits for controlling the temperature
    • G01N27/124—Circuits particularly adapted therefor, e.g. linearising circuits for controlling the temperature varying the temperature, e.g. in a cyclic manner

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biochemistry (AREA)
  • Electrochemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
GB8611272A 1985-05-20 1986-05-08 Selective chemical detection by energy modulation of sensors Expired GB2175399B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US73619685A 1985-05-20 1985-05-20

Publications (3)

Publication Number Publication Date
GB8611272D0 true GB8611272D0 (en) 1986-06-18
GB2175399A GB2175399A (en) 1986-11-26
GB2175399B GB2175399B (en) 1989-10-11

Family

ID=24958902

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8611272A Expired GB2175399B (en) 1985-05-20 1986-05-08 Selective chemical detection by energy modulation of sensors

Country Status (7)

Country Link
JP (1) JPH07122635B2 (en)
CA (1) CA1249334A (en)
DE (1) DE3616860A1 (en)
FR (1) FR2582101B1 (en)
GB (1) GB2175399B (en)
IT (1) IT1213096B (en)
NL (1) NL8601272A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3736200A1 (en) * 1987-10-26 1989-05-03 Siemens Ag Method of operating a semiconductor gas sensor working on the calorimeter principle and having a plurality of sensor elements
DE10309206A1 (en) * 2003-02-28 2004-09-09 Abb Research Ltd. Heat conductivity measuring instrument, for use in micro-analysis of gaseous or liquid media, uses active regulation of modulation signal frequency
GB0508657D0 (en) * 2005-04-29 2005-06-08 Tristel Company The Ltd Flow control

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2053460A (en) * 1935-09-25 1936-09-08 Jesse J Brown Liquid gauge
US2899282A (en) * 1954-11-19 1959-08-11 Means for measuring the contents of a combustible
DE2313413C3 (en) * 1973-03-17 1978-03-02 Westfaelische Berggewerkschaftskasse, 4630 Bochum Method and measuring device for determining the proportion of one or more gas components in a gas mixture, in particular the CO content and / or the CH4 content in underground operations
US3906473A (en) * 1974-03-08 1975-09-16 Ross Inc Will Method and apparatus for operating a gas sensor
US3938956A (en) * 1974-06-28 1976-02-17 The United States Of America As Represented By The National Aeronautics And Space Administration Office Of General Counsel-Code Gp Modulated hydrogen ion flame detector
DE2808033A1 (en) * 1978-02-24 1979-08-30 Siemens Ag DEVICE FOR SUPPRESSION OF WATER VAPOR CROSS-SENSITIVITY IN A NON-DISPERSIVE INFRARED GAS ANALYZER
US4205956A (en) * 1979-05-21 1980-06-03 The International Nickel Company, Inc. Nickel carbonyl analyzer
GB2057135B (en) * 1979-08-22 1984-06-06 Southwest Res Inst Gyro magnetic detection method and apparatus
US4340458A (en) * 1980-06-02 1982-07-20 Joslin Diabetes Center, Inc. Glucose sensor
US4399684A (en) * 1981-11-27 1983-08-23 Sierra Monitor Corporation Gas measurement method
DE3364035D1 (en) * 1982-04-15 1986-07-17 Cerberus Ag Gas and/or vapour alarm device
JPS58180941A (en) * 1982-04-16 1983-10-22 Hitachi Ltd Electrochemical measurement of photoreaction
JPS595939A (en) * 1982-07-03 1984-01-12 Horiba Ltd Continuous measuring apparatus for particulate
EP0135135A3 (en) * 1983-08-15 1987-04-15 Honeywell Inc. Method and apparatus for trace gas detection
CH668648A5 (en) * 1984-04-04 1989-01-13 Cerberus Ag METHOD AND DEVICE FOR DETECTING REDUCING GASES IN A GAS MIXTURE.

Also Published As

Publication number Publication date
NL8601272A (en) 1986-12-16
DE3616860A1 (en) 1986-11-20
IT8620494A0 (en) 1986-05-20
FR2582101B1 (en) 1992-09-18
GB2175399A (en) 1986-11-26
CA1249334A (en) 1989-01-24
JPH07122635B2 (en) 1995-12-25
IT1213096B (en) 1989-12-07
JPS61270660A (en) 1986-11-29
GB2175399B (en) 1989-10-11
FR2582101A1 (en) 1986-11-21

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19970508