JPS533880A - Sensitivity checking method for scattered light type smoke detector - Google Patents
Sensitivity checking method for scattered light type smoke detectorInfo
- Publication number
- JPS533880A JPS533880A JP7867176A JP7867176A JPS533880A JP S533880 A JPS533880 A JP S533880A JP 7867176 A JP7867176 A JP 7867176A JP 7867176 A JP7867176 A JP 7867176A JP S533880 A JPS533880 A JP S533880A
- Authority
- JP
- Japan
- Prior art keywords
- scattered light
- smoke detector
- light type
- checking method
- type smoke
- 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.)
- Pending
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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/4785—Standardising light scatter apparatus; Standards therefor
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Fire-Detection Mechanisms (AREA)
Abstract
PURPOSE:To carry out easy inspection by raising luminous output when checking sensitivity as compared with luminous output under normal guarding up to a level acting alarm with inflow of smoke, by means of switching resistors connected across luminous diode and electric power line.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7867176A JPS533880A (en) | 1976-07-01 | 1976-07-01 | Sensitivity checking method for scattered light type smoke detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7867176A JPS533880A (en) | 1976-07-01 | 1976-07-01 | Sensitivity checking method for scattered light type smoke detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS533880A true JPS533880A (en) | 1978-01-13 |
Family
ID=13668320
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7867176A Pending JPS533880A (en) | 1976-07-01 | 1976-07-01 | Sensitivity checking method for scattered light type smoke detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS533880A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5946841A (en) * | 1982-09-10 | 1984-03-16 | Oki Denki Bosai Kk | Photoelectric type smoke detector with test function |
JPS5946840A (en) * | 1982-09-10 | 1984-03-16 | Oki Denki Bosai Kk | Photoelectric type smoke detector with test function |
JPH0285994A (en) * | 1989-08-01 | 1990-03-27 | Nohmi Bosai Ltd | Function inspecting device for photoelectric smoke sensor |
JPH02230397A (en) * | 1990-01-26 | 1990-09-12 | Nohmi Bosai Ltd | Testing device for scattered light type smoke sensor |
JPH02138396U (en) * | 1989-04-17 | 1990-11-19 | ||
JPH0373099A (en) * | 1989-08-12 | 1991-03-28 | Matsushita Electric Works Ltd | Photoelectric smoke sensor |
-
1976
- 1976-07-01 JP JP7867176A patent/JPS533880A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5946841A (en) * | 1982-09-10 | 1984-03-16 | Oki Denki Bosai Kk | Photoelectric type smoke detector with test function |
JPS5946840A (en) * | 1982-09-10 | 1984-03-16 | Oki Denki Bosai Kk | Photoelectric type smoke detector with test function |
JPH02138396U (en) * | 1989-04-17 | 1990-11-19 | ||
JPH0285994A (en) * | 1989-08-01 | 1990-03-27 | Nohmi Bosai Ltd | Function inspecting device for photoelectric smoke sensor |
JPH0546000B2 (en) * | 1989-08-01 | 1993-07-12 | Nohmi Bosai Ltd | |
JPH0373099A (en) * | 1989-08-12 | 1991-03-28 | Matsushita Electric Works Ltd | Photoelectric smoke sensor |
JPH02230397A (en) * | 1990-01-26 | 1990-09-12 | Nohmi Bosai Ltd | Testing device for scattered light type smoke sensor |
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