BE862723A - Perfectionnements aux moniteurs de gaz - Google Patents

Perfectionnements aux moniteurs de gaz

Info

Publication number
BE862723A
BE862723A BE184174A BE184174A BE862723A BE 862723 A BE862723 A BE 862723A BE 184174 A BE184174 A BE 184174A BE 184174 A BE184174 A BE 184174A BE 862723 A BE862723 A BE 862723A
Authority
BE
Belgium
Prior art keywords
gas monitor
developments
monitor developments
gas
monitor
Prior art date
Application number
BE184174A
Other languages
English (en)
Original Assignee
British Steel Corp
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 British Steel Corp filed Critical British Steel Corp
Publication of BE862723A publication Critical patent/BE862723A/fr

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)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
BE184174A 1977-01-10 1978-01-06 Perfectionnements aux moniteurs de gaz BE862723A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB779/77A GB1557921A (en) 1977-01-10 1977-01-10 Gas monitors

Publications (1)

Publication Number Publication Date
BE862723A true BE862723A (fr) 1978-05-02

Family

ID=9710373

Family Applications (1)

Application Number Title Priority Date Filing Date
BE184174A BE862723A (fr) 1977-01-10 1978-01-06 Perfectionnements aux moniteurs de gaz

Country Status (7)

Country Link
US (1) US4185491A (fr)
JP (1) JPS5389495A (fr)
BE (1) BE862723A (fr)
DE (1) DE2800683A1 (fr)
FR (1) FR2377035A1 (fr)
GB (1) GB1557921A (fr)
NL (1) NL7800036A (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3019387C2 (de) * 1980-05-21 1986-01-23 Siemens AG, 1000 Berlin und 8000 München Dünnschicht-Halbleiter-Gassensor mit einem in den Sensoraufbau integrierten Heizelement
US4351181A (en) * 1980-10-17 1982-09-28 Currans James H Linear, gas to voltage transducer circuit
US4458242A (en) * 1980-10-25 1984-07-03 Matsushita Electric Works, Ltd. Gas detector
US4327361A (en) * 1980-11-06 1982-04-27 The United States Of America As Represented By The Secretary Of The Army Gas sensor
US4502321A (en) * 1981-02-27 1985-03-05 Capital Controls Apparatus and method for measuring the concentration of gases
US4352087A (en) * 1981-04-22 1982-09-28 Marie C. Kercheval Fume detector and alarm system
EP0075101A3 (fr) * 1981-09-22 1985-12-04 Cerberus Ag Procédé et appareil pour la réduction de fausses alertes dues à des gaz interférents dans les installations de contrôle de gaz
US4691979A (en) * 1983-08-04 1987-09-08 Manda R & D Compliant press-fit electrical contact
DE3435874A1 (de) * 1984-09-29 1986-04-03 Horst Dipl.-Ing. 2000 Hamburg Krauleidies Verfahren und anordnung zur ueberwachung der fremdgaskonzentration in einem gasfoermigen traegermedium
JPS6244252U (fr) * 1985-09-04 1987-03-17
US4785658A (en) * 1985-12-02 1988-11-22 John Jackson Method and apparatus for sensing hydrocarbon gases
US4896143A (en) * 1987-04-24 1990-01-23 Quantum Group, Inc. Gas concentration sensor with dose monitoring
US4918974A (en) * 1989-02-06 1990-04-24 Alcan International Limited Method and apparatus for the measurement of the thermal conductivity of gases
US5081869A (en) * 1989-02-06 1992-01-21 Alcan International Limited Method and apparatus for the measurement of the thermal conductivity of gases
FR2651038B1 (fr) * 1989-08-21 1991-10-31 Capsor Detecteur de gaz explosifs mettant en oeuvre une cellule a coefficient de temperature negatif
US6166356A (en) * 1999-04-19 2000-12-26 Hewlett-Packard Temperature monitoring system
US7604478B2 (en) * 2005-03-21 2009-10-20 Honeywell International Inc. Vapor resistant fuel burning appliance
DE102014000343A1 (de) 2014-01-11 2015-07-16 Dräger Safety AG & Co. KGaA Gasmessgerät
US10054534B1 (en) * 2015-07-08 2018-08-21 Airviz Inc. Group calibration of environmental sensors

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3695848A (en) * 1970-04-07 1972-10-03 Naoyoshi Taguchi Gas detecting device
GB1374575A (en) * 1970-08-26 1974-11-20 Nat Res Dev Semiconducting gas-sensitive devices
US3877291A (en) * 1972-08-15 1975-04-15 Borg Warner Portable breath tester
GB1451231A (en) * 1973-03-30 1976-09-29 Nat Res Dev Gas sensitive devices
FR2239683B2 (fr) * 1973-08-03 1978-01-27 Nohmi Bosai Kogyo Co Ltd
NL7313897A (nl) * 1973-10-10 1975-04-14 Visser Robertus Gerardus Gasindicator.
US3906473A (en) * 1974-03-08 1975-09-16 Ross Inc Will Method and apparatus for operating a gas sensor
BE819872A (fr) * 1974-09-13 1974-12-31 Procede et dispositif pour determiner la proportion d'un ou de plusieurs composants dans un melange gazeux.
US3950739A (en) * 1974-10-30 1976-04-13 Campman James P Detector for detecting and locating the source of a contaminating gas or smoke in the atmosphere
US4000650B1 (en) * 1975-03-20 1995-11-14 Endress Hauser Gmbh Co Method and apparatus for ultrasonic material level measurement

Also Published As

Publication number Publication date
FR2377035B1 (fr) 1983-04-08
DE2800683A1 (de) 1978-07-20
US4185491A (en) 1980-01-29
JPS5389495A (en) 1978-08-07
GB1557921A (en) 1979-12-19
NL7800036A (nl) 1978-07-12
FR2377035A1 (fr) 1978-08-04

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: BRITISH STEEL CORP.

Effective date: 19870131