DE3128777C2 - - Google Patents

Info

Publication number
DE3128777C2
DE3128777C2 DE19813128777 DE3128777A DE3128777C2 DE 3128777 C2 DE3128777 C2 DE 3128777C2 DE 19813128777 DE19813128777 DE 19813128777 DE 3128777 A DE3128777 A DE 3128777A DE 3128777 C2 DE3128777 C2 DE 3128777C2
Authority
DE
Germany
Prior art keywords
fire detector
reference voltage
photosensitive element
detector according
resistor
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
Application number
DE19813128777
Other languages
German (de)
English (en)
Other versions
DE3128777A1 (de
Inventor
Bernd 5300 Bonn De Heinen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Esser Security Systems GmbH
Original Assignee
Esser Sicherheitstechnik & Co Kg 4040 Neuss De GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Esser Sicherheitstechnik & Co Kg 4040 Neuss De GmbH filed Critical Esser Sicherheitstechnik & Co Kg 4040 Neuss De GmbH
Priority to DE19813128777 priority Critical patent/DE3128777A1/de
Publication of DE3128777A1 publication Critical patent/DE3128777A1/de
Application granted granted Critical
Publication of DE3128777C2 publication Critical patent/DE3128777C2/de
Granted legal-status Critical Current

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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Detection Mechanisms (AREA)
DE19813128777 1981-07-21 1981-07-21 Gleichspannungsgespeister brandmelder Granted DE3128777A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19813128777 DE3128777A1 (de) 1981-07-21 1981-07-21 Gleichspannungsgespeister brandmelder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813128777 DE3128777A1 (de) 1981-07-21 1981-07-21 Gleichspannungsgespeister brandmelder

Publications (2)

Publication Number Publication Date
DE3128777A1 DE3128777A1 (de) 1983-02-10
DE3128777C2 true DE3128777C2 (US06650917-20031118-M00005.png) 1990-04-26

Family

ID=6137385

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19813128777 Granted DE3128777A1 (de) 1981-07-21 1981-07-21 Gleichspannungsgespeister brandmelder

Country Status (1)

Country Link
DE (1) DE3128777A1 (US06650917-20031118-M00005.png)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5670937A (en) * 1995-05-16 1997-09-23 General Signal Corporation Line monitor for two wire data transmission
US5721530A (en) * 1995-05-16 1998-02-24 General Signal Corporation Stand alone mode for alarm-type module
US5701115A (en) * 1995-05-16 1997-12-23 General Signal Corporation Field programmable module personalities
US5864286A (en) * 1995-05-16 1999-01-26 General Signal Corporation Distributed intelligence alarm system having a two- tier monitoring process for detecting alarm conditions
US5786757A (en) * 1995-05-16 1998-07-28 General Signal Corporation Load shed scheme for two wire data transmission

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3866195A (en) * 1973-05-07 1975-02-11 Fire Alert Company Combustion product detector and method of calibrating

Also Published As

Publication number Publication date
DE3128777A1 (de) 1983-02-10

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: CARADON ESSER GMBH, 41469 NEUSS, DE

8327 Change in the person/name/address of the patent owner

Owner name: ESSER SECURITY SYSTEMS GMBH, 41469 NEUSS, DE