GB2001464A - Emergency alarm installation - Google Patents
Emergency alarm installationInfo
- Publication number
- GB2001464A GB2001464A GB787827447A GB7827447A GB2001464A GB 2001464 A GB2001464 A GB 2001464A GB 787827447 A GB787827447 A GB 787827447A GB 7827447 A GB7827447 A GB 7827447A GB 2001464 A GB2001464 A GB 2001464A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pressure
- enclosures
- alarm
- installation
- fire
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/12—Checking intermittently signalling or alarm systems
- G08B29/14—Checking intermittently signalling or alarm systems checking the detection circuits
- G08B29/145—Checking intermittently signalling or alarm systems checking the detection circuits of fire detection circuits
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/04—Hydraulic or pneumatic actuation of the alarm, e.g. by change of fluid pressure
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/02—Monitoring continuously signalling or alarm systems
- G08B29/04—Monitoring of the detection circuits
- G08B29/043—Monitoring of the detection circuits of fire detection circuits
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Fluid Mechanics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Detection Mechanisms (AREA)
- Fire Alarms (AREA)
- Alarm Systems (AREA)
Abstract
An emergency alarm installation includes at least two fluid-tight enclosures (3) filled with a fluid, the pressure of which increases in case of an emergency happening in its vicinity, typically in case of a fire, the heat of which causes an increase in pressure within the enclosures. The enclosures (3) are connected to respective bellows (23), (23') operable by the common armature (24) of electromechanical transducers (25), (25') which receive electric checking pulses for causing abrupt variations in pressure in the enclosures for purposes of checking the proper operation of the installation. Provision is made for detecting a relatively abrupt increase in pressure to provide one type of fire alarm, a rise in pressure beyond a certain maximum value to provide another type of fire alarm and a possible disappearance of pressure, due, for example, to a leak, in order to provide a technical alarm. In this manner, the installation continuously checks its own proper operating condition. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH767477 | 1977-06-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB2001464A true GB2001464A (en) | 1979-01-31 |
Family
ID=4328822
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB787827447A Withdrawn GB2001464A (en) | 1977-06-22 | 1978-06-21 | Emergency alarm installation |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE2827486A1 (en) |
GB (1) | GB2001464A (en) |
SE (1) | SE7807108L (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0350440A1 (en) * | 1988-07-04 | 1990-01-10 | Securiton AG | Pressure surveillance device for a temperature detector |
US5276433A (en) * | 1991-04-11 | 1994-01-04 | Brissco Equipment Limited | Methods and apparatus for temperature sensing |
EP3206198A1 (en) * | 2016-02-10 | 2017-08-16 | Kidde Technologies, Inc. | Pneumatic fire detectors |
US9922527B2 (en) | 2016-07-29 | 2018-03-20 | Kidde Technologies, Inc. | Multi-condition sensor systems |
EP3336812A1 (en) * | 2016-12-19 | 2018-06-20 | Kidde Technologies, Inc. | In-situ functionality test feature for advance pneumatic detector |
US10126196B2 (en) | 2016-07-29 | 2018-11-13 | Kidde Technologies, Inc. | Multi-condition sensor systems |
CN112312976A (en) * | 2018-12-05 | 2021-02-02 | 马里奥夫有限公司 | Crack detection function for fire protection sprinklers with frangible bubbles |
EP3907484A1 (en) * | 2020-05-08 | 2021-11-10 | Carrier Corporation | Detection of leakage in an aspirating fire detection system |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3905514A1 (en) * | 1989-02-23 | 1990-08-30 | Oliver Burt | Signal transmitter unit, in particular alarm system for detecting changes in the load on parts of land or buildings |
-
1978
- 1978-06-21 GB GB787827447A patent/GB2001464A/en not_active Withdrawn
- 1978-06-21 SE SE7807108A patent/SE7807108L/en unknown
- 1978-06-22 DE DE19782827486 patent/DE2827486A1/en active Pending
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0350440A1 (en) * | 1988-07-04 | 1990-01-10 | Securiton AG | Pressure surveillance device for a temperature detector |
US5276433A (en) * | 1991-04-11 | 1994-01-04 | Brissco Equipment Limited | Methods and apparatus for temperature sensing |
EP3206198A1 (en) * | 2016-02-10 | 2017-08-16 | Kidde Technologies, Inc. | Pneumatic fire detectors |
US10002508B2 (en) | 2016-02-10 | 2018-06-19 | Kidde Technologies, Inc. | Pneumatic fire detectors |
US9922527B2 (en) | 2016-07-29 | 2018-03-20 | Kidde Technologies, Inc. | Multi-condition sensor systems |
US10126196B2 (en) | 2016-07-29 | 2018-11-13 | Kidde Technologies, Inc. | Multi-condition sensor systems |
EP3336812A1 (en) * | 2016-12-19 | 2018-06-20 | Kidde Technologies, Inc. | In-situ functionality test feature for advance pneumatic detector |
US10466124B2 (en) | 2016-12-19 | 2019-11-05 | Kidde Technologies, Inc. | In-situ functionality test feature for advance pneumatic detector |
CN112312976A (en) * | 2018-12-05 | 2021-02-02 | 马里奥夫有限公司 | Crack detection function for fire protection sprinklers with frangible bubbles |
CN112312976B (en) * | 2018-12-05 | 2023-05-23 | 马里奥夫有限公司 | Crack detection function for fire sprinklers with fragile bubbles |
EP3907484A1 (en) * | 2020-05-08 | 2021-11-10 | Carrier Corporation | Detection of leakage in an aspirating fire detection system |
US11609144B2 (en) | 2020-05-08 | 2023-03-21 | Carrier Corporation | Detection of leakage in an aspirating fire detection system |
Also Published As
Publication number | Publication date |
---|---|
DE2827486A1 (en) | 1979-01-04 |
SE7807108L (en) | 1978-12-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |