JP2507204Y2 - 火災警報装置 - Google Patents
火災警報装置Info
- Publication number
- JP2507204Y2 JP2507204Y2 JP1988038304U JP3830488U JP2507204Y2 JP 2507204 Y2 JP2507204 Y2 JP 2507204Y2 JP 1988038304 U JP1988038304 U JP 1988038304U JP 3830488 U JP3830488 U JP 3830488U JP 2507204 Y2 JP2507204 Y2 JP 2507204Y2
- Authority
- JP
- Japan
- Prior art keywords
- level
- light
- optical window
- fire alarm
- light source
- 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
- 230000003287 optical effect Effects 0.000 claims description 20
- 238000011109 contamination Methods 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 230000005855 radiation Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims 1
- 230000001681 protective effect Effects 0.000 description 8
- 230000002238 attenuated effect Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Landscapes
- Fire-Detection Mechanisms (AREA)
- Fire Alarms (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988038304U JP2507204Y2 (ja) | 1988-03-25 | 1988-03-25 | 火災警報装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988038304U JP2507204Y2 (ja) | 1988-03-25 | 1988-03-25 | 火災警報装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01144992U JPH01144992U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1989-10-05 |
| JP2507204Y2 true JP2507204Y2 (ja) | 1996-08-14 |
Family
ID=31264862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988038304U Expired - Lifetime JP2507204Y2 (ja) | 1988-03-25 | 1988-03-25 | 火災警報装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2507204Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2623381B2 (ja) * | 1991-06-15 | 1997-06-25 | ニッタン株式会社 | 炎感知装置 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6310514Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1980-03-10 | 1988-03-29 |
-
1988
- 1988-03-25 JP JP1988038304U patent/JP2507204Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01144992U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1989-10-05 |
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