JPH0476624B2 - - Google Patents
Info
- Publication number
- JPH0476624B2 JPH0476624B2 JP61304660A JP30466086A JPH0476624B2 JP H0476624 B2 JPH0476624 B2 JP H0476624B2 JP 61304660 A JP61304660 A JP 61304660A JP 30466086 A JP30466086 A JP 30466086A JP H0476624 B2 JPH0476624 B2 JP H0476624B2
- Authority
- JP
- Japan
- Prior art keywords
- particle concentration
- predetermined
- threshold
- alarm
- suspended particles
- 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
Links
- 239000002245 particle Substances 0.000 claims description 190
- 230000001678 irradiating effect Effects 0.000 claims 1
- 239000000779 smoke Substances 0.000 description 26
- 238000001514 detection method Methods 0.000 description 22
- 239000000428 dust Substances 0.000 description 15
- 238000000149 argon plasma sintering Methods 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000002265 prevention Effects 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61304660A JPS63157035A (ja) | 1986-12-19 | 1986-12-19 | 煙センサ |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61304660A JPS63157035A (ja) | 1986-12-19 | 1986-12-19 | 煙センサ |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63157035A JPS63157035A (ja) | 1988-06-30 |
| JPH0476624B2 true JPH0476624B2 (fr) | 1992-12-04 |
Family
ID=17935696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61304660A Granted JPS63157035A (ja) | 1986-12-19 | 1986-12-19 | 煙センサ |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63157035A (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2740262B2 (ja) * | 1989-05-16 | 1998-04-15 | 消防庁長官 | 粒径計測型煙感知器 |
| JP3714926B2 (ja) | 2002-08-22 | 2005-11-09 | ホーチキ株式会社 | サンプリング管式煙検知器 |
| JP5420437B2 (ja) * | 2010-01-19 | 2014-02-19 | 株式会社オプティコン | 粉末検出装置 |
-
1986
- 1986-12-19 JP JP61304660A patent/JPS63157035A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63157035A (ja) | 1988-06-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313115 |
|
| R371 | Transfer withdrawn |
Free format text: JAPANESE INTERMEDIATE CODE: R371 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313115 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| LAPS | Cancellation because of no payment of annual fees |