NL7313897A - GAS INDICATOR. - Google Patents

GAS INDICATOR.

Info

Publication number
NL7313897A
NL7313897A NL7313897A NL7313897A NL7313897A NL 7313897 A NL7313897 A NL 7313897A NL 7313897 A NL7313897 A NL 7313897A NL 7313897 A NL7313897 A NL 7313897A NL 7313897 A NL7313897 A NL 7313897A
Authority
NL
Netherlands
Prior art keywords
gas indicator
indicator
gas
Prior art date
Application number
NL7313897A
Other languages
Dutch (nl)
Original Assignee
Visser Robertus Gerardus
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 Visser Robertus Gerardus filed Critical Visser Robertus Gerardus
Priority to NL7313897A priority Critical patent/NL7313897A/en
Priority to BE138387A priority patent/BE808064A/en
Priority to DE2402493A priority patent/DE2402493A1/en
Priority to US437351A priority patent/US3895367A/en
Priority to JP49012299A priority patent/JPS5067197A/ja
Priority to FR7403229A priority patent/FR2247773B1/fr
Publication of NL7313897A publication Critical patent/NL7313897A/en

Links

Classifications

    • 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
    • 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

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)
  • Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Emergency Alarm Devices (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
  • Fire-Detection Mechanisms (AREA)
NL7313897A 1973-10-10 1973-10-10 GAS INDICATOR. NL7313897A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL7313897A NL7313897A (en) 1973-10-10 1973-10-10 GAS INDICATOR.
BE138387A BE808064A (en) 1973-10-10 1973-11-30 GAS INDICATOR
DE2402493A DE2402493A1 (en) 1973-10-10 1974-01-19 GAS INDICATOR
US437351A US3895367A (en) 1973-10-10 1974-01-28 Gas indicator with semiconductive gas sensor
JP49012299A JPS5067197A (en) 1973-10-10 1974-01-31
FR7403229A FR2247773B1 (en) 1973-10-10 1974-01-31

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7313897A NL7313897A (en) 1973-10-10 1973-10-10 GAS INDICATOR.

Publications (1)

Publication Number Publication Date
NL7313897A true NL7313897A (en) 1975-04-14

Family

ID=19819783

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7313897A NL7313897A (en) 1973-10-10 1973-10-10 GAS INDICATOR.

Country Status (6)

Country Link
US (1) US3895367A (en)
JP (1) JPS5067197A (en)
BE (1) BE808064A (en)
DE (1) DE2402493A1 (en)
FR (1) FR2247773B1 (en)
NL (1) NL7313897A (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH598601A5 (en) * 1975-07-10 1978-05-12 Richard Hunziker
US4007456A (en) * 1975-12-01 1977-02-08 Craftor Inc. Gas detecting and warning system
US4065759A (en) * 1976-01-07 1977-12-27 Handing Theodore E Smoke detector
DE2709487A1 (en) * 1976-03-17 1977-09-22 Nohmi Bosai Kogyo Co Ltd FIRE ALARM
US4088986A (en) * 1976-10-01 1978-05-09 Boucher Charles E Smoke, fire and gas alarm with remote sensing, back-up emergency power, and system self monitoring
US4096473A (en) * 1976-12-09 1978-06-20 P.R. Mallory & Co. Inc. High output smoke and heat detector alarm system utilizing a piezoelectric transducer and a voltage doubling means
GB1557921A (en) * 1977-01-10 1979-12-19 British Steel Corp Gas monitors
USRE30620E (en) * 1978-07-03 1981-05-19 P. R. Mallory & Co. Inc. High output smoke and heat detector alarm system utilizing a piezoelectric transducer and a voltage doubling means
FR2431124A1 (en) * 1978-07-11 1980-02-08 Silvy Bruno Breathalyser determining alcohol in motorists body - has stabilised electrical power supply and gas detecting resistor
US4225860A (en) * 1979-01-15 1980-09-30 Pittway Corporation Sensitivity controlled dual input fire detector
JPS55166163A (en) * 1979-06-13 1980-12-25 Citizen Watch Co Ltd Controller for anesthetic gas
US4335379A (en) * 1979-09-13 1982-06-15 Martin John R Method and system for providing an audible alarm responsive to sensed conditions
IT212760Z2 (en) * 1985-02-13 1989-09-20 Salutati Giovanni Pistolozzi M 'PROTECTOR-GAS' PROTECTION SYSTEM AGAINST GAS LEAKS
DE102014019773B4 (en) 2014-12-17 2023-12-07 Elmos Semiconductor Se Device and method for distinguishing between solid objects, cooking fumes and smoke using the display of a mobile telephone
DE102014019172B4 (en) 2014-12-17 2023-12-07 Elmos Semiconductor Se Device and method for distinguishing between solid objects, cooking fumes and smoke using a compensating optical measuring system
CN110164066A (en) * 2017-12-29 2019-08-23 郑州天舜电子技术有限公司 A kind of Security alert indicator light

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3733595A (en) * 1971-02-12 1973-05-15 E Benedict Condition responsive switching circuit
JPS5320668Y2 (en) * 1972-06-07 1978-05-31

Also Published As

Publication number Publication date
FR2247773B1 (en) 1977-09-16
DE2402493A1 (en) 1975-04-30
FR2247773A1 (en) 1975-05-09
JPS5067197A (en) 1975-06-05
US3895367A (en) 1975-07-15
BE808064A (en) 1974-03-15

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