CH485287A - Device for signaling leaks or the presence of combustible gases - Google Patents
Device for signaling leaks or the presence of combustible gasesInfo
- Publication number
- CH485287A CH485287A CH1166968A CH1166968A CH485287A CH 485287 A CH485287 A CH 485287A CH 1166968 A CH1166968 A CH 1166968A CH 1166968 A CH1166968 A CH 1166968A CH 485287 A CH485287 A CH 485287A
- Authority
- CH
- Switzerland
- Prior art keywords
- combustible gases
- leaks
- signaling
- signaling leaks
- combustible
- Prior art date
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
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/71—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
Landscapes
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Emergency Alarm Devices (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT1922767 | 1967-08-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH485287A true CH485287A (en) | 1970-01-31 |
Family
ID=11155944
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1166968A CH485287A (en) | 1967-08-04 | 1968-08-02 | Device for signaling leaks or the presence of combustible gases |
Country Status (2)
Country | Link |
---|---|
CH (1) | CH485287A (en) |
DE (1) | DE1773938A1 (en) |
-
1968
- 1968-07-29 DE DE19681773938 patent/DE1773938A1/en active Pending
- 1968-08-02 CH CH1166968A patent/CH485287A/en unknown
Also Published As
Publication number | Publication date |
---|---|
DE1773938A1 (en) | 1972-02-03 |
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