GB820293A - Improvements in gas detectors - Google Patents

Improvements in gas detectors

Info

Publication number
GB820293A
GB820293A GB373757A GB373757A GB820293A GB 820293 A GB820293 A GB 820293A GB 373757 A GB373757 A GB 373757A GB 373757 A GB373757 A GB 373757A GB 820293 A GB820293 A GB 820293A
Authority
GB
United Kingdom
Prior art keywords
cell
gas
colour
changes
alarm
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
GB373757A
Other languages
English (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.)
WILLIAM HERMAN ROSENBLUM
Original Assignee
WILLIAM HERMAN ROSENBLUM
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
Priority to BE555203D priority Critical patent/BE555203A/xx
Priority to US514888A priority patent/US2787782A/en
Application filed by WILLIAM HERMAN ROSENBLUM filed Critical WILLIAM HERMAN ROSENBLUM
Priority to GB373757A priority patent/GB820293A/en
Priority to DER20499A priority patent/DE1103643B/de
Priority to FR1173953D priority patent/FR1173953A/fr
Publication of GB820293A publication Critical patent/GB820293A/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

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
GB373757A 1955-06-13 1957-02-04 Improvements in gas detectors Expired GB820293A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE555203D BE555203A ( ) 1957-02-04
US514888A US2787782A (en) 1955-06-13 1955-06-13 Gas-responsive signal actuator
GB373757A GB820293A (en) 1957-02-04 1957-02-04 Improvements in gas detectors
DER20499A DE1103643B (de) 1957-02-04 1957-02-05 Auf Gas ansprechender Signalgeber
FR1173953D FR1173953A (fr) 1957-02-04 1957-02-11 Détecteur de gaz déclenchant un signal d'alerte

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
GB820293A true GB820293A (en) 1959-09-16

Family

ID=9764003

Family Applications (1)

Application Number Title Priority Date Filing Date
GB373757A Expired GB820293A (en) 1955-06-13 1957-02-04 Improvements in gas detectors

Country Status (3)

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

Cited By (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

Cited By (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 ( )
FR1173953A (fr) 1959-03-04

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