CA1303434C - Dispositif pour indiquer l'etat ouvert ou ferme d'un dispositif d'obturation - Google Patents
Dispositif pour indiquer l'etat ouvert ou ferme d'un dispositif d'obturationInfo
- Publication number
- CA1303434C CA1303434C CA000534367A CA534367A CA1303434C CA 1303434 C CA1303434 C CA 1303434C CA 000534367 A CA000534367 A CA 000534367A CA 534367 A CA534367 A CA 534367A CA 1303434 C CA1303434 C CA 1303434C
- Authority
- CA
- Canada
- Prior art keywords
- valve
- magnetic
- sensing means
- alarm
- magnetic sensing
- 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
- 230000005291 magnetic effect Effects 0.000 claims abstract description 113
- 239000000696 magnetic material Substances 0.000 claims abstract description 49
- 239000000463 material Substances 0.000 claims description 17
- 239000012530 fluid Substances 0.000 claims description 5
- 230000014759 maintenance of location Effects 0.000 claims description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 85
- 238000009434 installation Methods 0.000 description 9
- 229910000906 Bronze Inorganic materials 0.000 description 4
- 239000010974 bronze Substances 0.000 description 4
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 244000273256 Phragmites communis Species 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000003302 ferromagnetic material Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 230000005355 Hall effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Landscapes
- Indication Of The Valve Opening Or Closing Status (AREA)
- Check Valves (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPH550786 | 1986-04-17 | ||
| AUPH5507 | 1986-04-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1303434C true CA1303434C (fr) | 1992-06-16 |
Family
ID=3771563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000534367A Expired - Lifetime CA1303434C (fr) | 1986-04-17 | 1987-04-10 | Dispositif pour indiquer l'etat ouvert ou ferme d'un dispositif d'obturation |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS62251588A (fr) |
| AT (1) | ATE54999T1 (fr) |
| CA (1) | CA1303434C (fr) |
| HK (1) | HK45892A (fr) |
| NZ (1) | NZ219938A (fr) |
| SG (1) | SG3792G (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7219691B2 (en) * | 2003-02-07 | 2007-05-22 | Fisher Controls International Llc | Control valve positioner mounting system |
| CN106872160A (zh) * | 2017-03-10 | 2017-06-20 | 武汉市锅炉压力容器检验研究所 | 一种无阀杆弹簧式安全阀在线校验装置 |
-
1987
- 1987-04-09 NZ NZ219938A patent/NZ219938A/en unknown
- 1987-04-10 CA CA000534367A patent/CA1303434C/fr not_active Expired - Lifetime
- 1987-04-10 AT AT87105339T patent/ATE54999T1/de not_active IP Right Cessation
- 1987-04-16 JP JP62092112A patent/JPS62251588A/ja active Pending
-
1992
- 1992-01-14 SG SG37/92A patent/SG3792G/en unknown
- 1992-06-25 HK HK458/92A patent/HK45892A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| HK45892A (en) | 1992-07-03 |
| JPS62251588A (ja) | 1987-11-02 |
| SG3792G (en) | 1992-03-20 |
| NZ219938A (en) | 1990-11-27 |
| ATE54999T1 (de) | 1990-08-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |