FR1173953A - Gas detector triggering an alert signal - Google Patents

Gas detector triggering an alert signal

Info

Publication number
FR1173953A
FR1173953A FR1173953DA FR1173953A FR 1173953 A FR1173953 A FR 1173953A FR 1173953D A FR1173953D A FR 1173953DA FR 1173953 A FR1173953 A FR 1173953A
Authority
FR
France
Prior art keywords
gas detector
alert signal
detector triggering
triggering
alert
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
Application number
Other languages
French (fr)
Inventor
William Herman Rosenblum
Max Mirkin
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 filed Critical
Application granted granted Critical
Publication of FR1173953A publication Critical patent/FR1173953A/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
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
    • G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
    • G01N21/783—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour for analysing gases
    • 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

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Business, Economics & Management (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
FR1173953D 1957-02-04 1957-02-11 Gas detector triggering an alert signal Expired FR1173953A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB373757A GB820293A (en) 1957-02-04 1957-02-04 Improvements in gas detectors

Publications (1)

Publication Number Publication Date
FR1173953A true FR1173953A (en) 1959-03-04

Family

ID=9764003

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1173953D Expired FR1173953A (en) 1957-02-04 1957-02-11 Gas detector triggering an alert signal

Country Status (3)

Country Link
BE (1) BE555203A (en)
FR (1) FR1173953A (en)
GB (1) GB820293A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3114610A (en) * 1961-05-17 1963-12-17 Martin Marietta Corp Continuous sampling gas analyzer

Also Published As

Publication number Publication date
BE555203A (en)
GB820293A (en) 1959-09-16

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