JPH03102672U - - Google Patents
Info
- Publication number
- JPH03102672U JPH03102672U JP1148690U JP1148690U JPH03102672U JP H03102672 U JPH03102672 U JP H03102672U JP 1148690 U JP1148690 U JP 1148690U JP 1148690 U JP1148690 U JP 1148690U JP H03102672 U JPH03102672 U JP H03102672U
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- sensor optical
- bulbs
- opening
- closing
- 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.)
- Granted
Links
- 239000013307 optical fiber Substances 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims 1
- 238000012806 monitoring device Methods 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000253 optical time-domain reflectometry Methods 0.000 description 1
Landscapes
- Optical Transform (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1148690U JP2523050Y2 (ja) | 1990-02-09 | 1990-02-09 | バルブ開閉モニタ装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1148690U JP2523050Y2 (ja) | 1990-02-09 | 1990-02-09 | バルブ開閉モニタ装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03102672U true JPH03102672U (en, 2012) | 1991-10-25 |
| JP2523050Y2 JP2523050Y2 (ja) | 1997-01-22 |
Family
ID=31515007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1148690U Expired - Lifetime JP2523050Y2 (ja) | 1990-02-09 | 1990-02-09 | バルブ開閉モニタ装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2523050Y2 (en, 2012) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005308540A (ja) * | 2004-04-21 | 2005-11-04 | Nippon Gear Co Ltd | 弁の開閉検査方法とその装置 |
| JP2006258463A (ja) * | 2005-03-15 | 2006-09-28 | Yokogawa Denshikiki Co Ltd | 外力検出装置及びこれを用いた防犯システム |
-
1990
- 1990-02-09 JP JP1148690U patent/JP2523050Y2/ja not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005308540A (ja) * | 2004-04-21 | 2005-11-04 | Nippon Gear Co Ltd | 弁の開閉検査方法とその装置 |
| JP2006258463A (ja) * | 2005-03-15 | 2006-09-28 | Yokogawa Denshikiki Co Ltd | 外力検出装置及びこれを用いた防犯システム |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2523050Y2 (ja) | 1997-01-22 |