GB1160760A - Automatic Fire Alarm System - Google Patents

Automatic Fire Alarm System

Info

Publication number
GB1160760A
GB1160760A GB3736666A GB3736666A GB1160760A GB 1160760 A GB1160760 A GB 1160760A GB 3736666 A GB3736666 A GB 3736666A GB 3736666 A GB3736666 A GB 3736666A GB 1160760 A GB1160760 A GB 1160760A
Authority
GB
United Kingdom
Prior art keywords
temperature
pulses
line
central station
relay
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
Application number
GB3736666A
Other languages
English (en)
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.)
Holger Nielsen & Co As
Original Assignee
Holger Nielsen & Co As
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 Holger Nielsen & Co As filed Critical Holger Nielsen & Co As
Publication of GB1160760A publication Critical patent/GB1160760A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
    • 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
    • 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
    • G08B29/06—Monitoring of the line circuits, e.g. signalling of line faults

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire Alarms (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
GB3736666A 1965-08-21 1966-08-19 Automatic Fire Alarm System Expired GB1160760A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK429665A DK108484C (da) 1965-08-21 1965-08-21 Elektrisk brandalarmanlæg.

Publications (1)

Publication Number Publication Date
GB1160760A true GB1160760A (en) 1969-08-06

Family

ID=8132179

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3736666A Expired GB1160760A (en) 1965-08-21 1966-08-19 Automatic Fire Alarm System

Country Status (5)

Country Link
DE (1) DE1285921B (enrdf_load_stackoverflow)
DK (1) DK108484C (enrdf_load_stackoverflow)
GB (1) GB1160760A (enrdf_load_stackoverflow)
NO (1) NO121584B (enrdf_load_stackoverflow)
SE (1) SE327353B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008015999B4 (de) * 2008-03-27 2011-04-21 Novar Gmbh Übertragungsweg - Prüfverfahren für eine Gefahrenmeldeanlage

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0066879A1 (de) * 1981-06-05 1982-12-15 Hekatron GmbH Schaltungsanordnung zur Übertragung von Messwerten, insbesondere in einem Brandmeldesystem zu einer Zentrale
DE3122474A1 (de) * 1981-06-05 1982-12-23 Hekatron GmbH, 7811 Sulzburg "schaltungsanordnung zur uebertragung von messwerten, insbesondere in einem brandmeldesystem, zu einer zentrale"

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008015999B4 (de) * 2008-03-27 2011-04-21 Novar Gmbh Übertragungsweg - Prüfverfahren für eine Gefahrenmeldeanlage

Also Published As

Publication number Publication date
DE1285921B (de) 1968-12-19
SE327353B (enrdf_load_stackoverflow) 1970-08-17
DK108484C (da) 1967-12-18
NO121584B (enrdf_load_stackoverflow) 1971-03-15

Similar Documents

Publication Publication Date Title
GB1338690A (en) Fire alarm system
GB1147354A (en) Improvements in lead failure detection circuit
GB1319615A (en) Apparatus for supervising the continuity of leads in alarm installations
ES340611A1 (es) Instalacion avisadora de incendios.
GB1285476A (en) Telemetry circuit for an a.c. power system
GB1036208A (en) Intrusion detection system
SE328225B (enrdf_load_stackoverflow)
GB1401146A (en) Fire alarm system with remote central station
US3676680A (en) Ionization fire alarm with insulation monitoring system
GB1161743A (en) Improvements in or relating to signalling and communication systems
GB936270A (en) Electrical protection and burglar alarm system
US4300099A (en) Fire detecting system
US3858192A (en) Intrusion detector alarm system having logic circuitry for inhibiting false alarms
GB1182700A (en) Improvements in or relating to Electrical Supervisory Systems
US3676877A (en) Fire alarm system with fire zone locator using zener diode voltage monitoring
GB1160760A (en) Automatic Fire Alarm System
US4041479A (en) Output circuit of an ionization smoke sensor
US3750123A (en) Smoke sensing circuit with battery standby
US3378829A (en) Fire warning device
CA1056931A (en) Smoke detector
GB1200120A (en) Improvements in or relating to fire alarms
US4025915A (en) LED smoke detector circuit
GB1298083A (en) Alarm circuit
US3478352A (en) Alarm apparatus
GB1332270A (en) Fire detecting system

Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees