JPH0534075Y2 - - Google Patents
Info
- Publication number
- JPH0534075Y2 JPH0534075Y2 JP1984027718U JP2771884U JPH0534075Y2 JP H0534075 Y2 JPH0534075 Y2 JP H0534075Y2 JP 1984027718 U JP1984027718 U JP 1984027718U JP 2771884 U JP2771884 U JP 2771884U JP H0534075 Y2 JPH0534075 Y2 JP H0534075Y2
- Authority
- JP
- Japan
- Prior art keywords
- light
- reference value
- circuit
- light receiving
- registered
- 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 - Lifetime
Links
- 239000000779 smoke Substances 0.000 claims description 41
- 230000005856 abnormality Effects 0.000 claims description 5
- 230000002238 attenuated effect Effects 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 description 26
- 238000001514 detection method Methods 0.000 description 17
- 230000035945 sensitivity Effects 0.000 description 17
- 238000007689 inspection Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000002159 abnormal effect Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
- Fire-Detection Mechanisms (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2771884U JPS60140188U (ja) | 1984-02-28 | 1984-02-28 | 減光式煙感知器 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2771884U JPS60140188U (ja) | 1984-02-28 | 1984-02-28 | 減光式煙感知器 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60140188U JPS60140188U (ja) | 1985-09-17 |
| JPH0534075Y2 true JPH0534075Y2 (no) | 1993-08-30 |
Family
ID=30524927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2771884U Granted JPS60140188U (ja) | 1984-02-28 | 1984-02-28 | 減光式煙感知器 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60140188U (no) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008202946A (ja) * | 2007-02-16 | 2008-09-04 | Nohmi Bosai Ltd | 火災感知器 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6310514Y2 (no) * | 1980-03-10 | 1988-03-29 |
-
1984
- 1984-02-28 JP JP2771884U patent/JPS60140188U/ja active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008202946A (ja) * | 2007-02-16 | 2008-09-04 | Nohmi Bosai Ltd | 火災感知器 |
| JP4703586B2 (ja) * | 2007-02-16 | 2011-06-15 | 能美防災株式会社 | 火災感知器 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60140188U (ja) | 1985-09-17 |
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