FR2651038B1 - Detecteur de gaz explosifs mettant en oeuvre une cellule a coefficient de temperature negatif - Google Patents

Detecteur de gaz explosifs mettant en oeuvre une cellule a coefficient de temperature negatif

Info

Publication number
FR2651038B1
FR2651038B1 FR8911055A FR8911055A FR2651038B1 FR 2651038 B1 FR2651038 B1 FR 2651038B1 FR 8911055 A FR8911055 A FR 8911055A FR 8911055 A FR8911055 A FR 8911055A FR 2651038 B1 FR2651038 B1 FR 2651038B1
Authority
FR
France
Prior art keywords
temperature coefficient
gas detector
negative temperature
explosive gas
coefficient cell
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.)
Expired - Fee Related
Application number
FR8911055A
Other languages
English (en)
Other versions
FR2651038A1 (fr
Inventor
Michele Blanchot
Daniel Dutertre-Laduree
Rein Andre Roos
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.)
CAPSOR
Original Assignee
CAPSOR
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 CAPSOR filed Critical CAPSOR
Priority to FR8911055A priority Critical patent/FR2651038B1/fr
Publication of FR2651038A1 publication Critical patent/FR2651038A1/fr
Application granted granted Critical
Publication of FR2651038B1 publication Critical patent/FR2651038B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/117—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means by using a detection device for specific gases, e.g. combustion products, produced by the fire

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biochemistry (AREA)
  • Electrochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
FR8911055A 1989-08-21 1989-08-21 Detecteur de gaz explosifs mettant en oeuvre une cellule a coefficient de temperature negatif Expired - Fee Related FR2651038B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8911055A FR2651038B1 (fr) 1989-08-21 1989-08-21 Detecteur de gaz explosifs mettant en oeuvre une cellule a coefficient de temperature negatif

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8911055A FR2651038B1 (fr) 1989-08-21 1989-08-21 Detecteur de gaz explosifs mettant en oeuvre une cellule a coefficient de temperature negatif

Publications (2)

Publication Number Publication Date
FR2651038A1 FR2651038A1 (fr) 1991-02-22
FR2651038B1 true FR2651038B1 (fr) 1991-10-31

Family

ID=9384811

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8911055A Expired - Fee Related FR2651038B1 (fr) 1989-08-21 1989-08-21 Detecteur de gaz explosifs mettant en oeuvre une cellule a coefficient de temperature negatif

Country Status (1)

Country Link
FR (1) FR2651038B1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1557921A (en) * 1977-01-10 1979-12-19 British Steel Corp Gas monitors
GB1586967A (en) * 1977-10-06 1981-03-25 Horstmann Gear Group Ltd Gas detection apparatus
FR2462704A1 (fr) * 1979-07-25 1981-02-13 Horstmann Gear Co Ltd Detecteur de gaz alimente par une batterie
US4818977A (en) * 1987-11-03 1989-04-04 Mine Safety Appliances Company Combustible gas detector having temperature stabilization capability

Also Published As

Publication number Publication date
FR2651038A1 (fr) 1991-02-22

Similar Documents

Publication Publication Date Title
RO86231A (fr) Separateur de gaz
FR2581190B1 (fr) Detecteur interferometrique de gaz
FR2577320B1 (fr) Detecteur de gaz a plusieurs elements detecteurs.
FR2650756B1 (fr) Membrane de separation de gaz
GB8809593D0 (en) Temperature compensated thermal radiation detectors
DK54286A (da) Gasmaaleinstrument
FR2650755B1 (fr) Membrane de separation de gaz
FR2485199B1 (fr) Detecteur de gaz
FR2603092B1 (fr) Bruleur a gaz
FR2548782B1 (fr) Detecteurs de gaz
FR2339859A1 (fr) Element detecteur de gaz
TR23780A (tr) Linyitler icin gaz reaktoerue
DE3275237D1 (de) A combustible gas analyzer
FR2574933B1 (fr) Dosimetre a gaz colorimetrique
JPS5599059A (en) Exhaust gas detector
TR23810A (tr) Ekoerueklue gaz sayaci
FR2610408B1 (fr) Detecteur electrochimique de gaz
FR2651038B1 (fr) Detecteur de gaz explosifs mettant en oeuvre une cellule a coefficient de temperature negatif
AU8433982A (en) Explosive gas detector
FR2447573B1 (fr) Detendeur de gaz
FR2560666B1 (fr) Bruleur a gaz
FR2495282B1 (fr) Bruleur a gaz
BE894077A (fr) Fourneau a gaz
FR2555747B1 (fr) Detecteur interferometrique de gaz
FR2510316B1 (fr) Laser a gaz

Legal Events

Date Code Title Description
ST Notification of lapse