GB2095449B - Fire detector test circuit - Google Patents

Fire detector test circuit

Info

Publication number
GB2095449B
GB2095449B GB8205600A GB8205600A GB2095449B GB 2095449 B GB2095449 B GB 2095449B GB 8205600 A GB8205600 A GB 8205600A GB 8205600 A GB8205600 A GB 8205600A GB 2095449 B GB2095449 B GB 2095449B
Authority
GB
United Kingdom
Prior art keywords
test circuit
fire detector
detector test
fire
circuit
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
GB8205600A
Other languages
English (en)
Other versions
GB2095449A (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.)
Nittan Co Ltd
Original Assignee
Nittan Co Ltd
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 Nittan Co Ltd filed Critical Nittan Co Ltd
Publication of GB2095449A publication Critical patent/GB2095449A/en
Application granted granted Critical
Publication of GB2095449B publication Critical patent/GB2095449B/en
Expired 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire Alarms (AREA)
  • Alarm Systems (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Fire-Detection Mechanisms (AREA)
GB8205600A 1981-02-25 1982-02-25 Fire detector test circuit Expired GB2095449B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56025494A JPS57139894A (en) 1981-02-25 1981-02-25 Operation testing circuit for fire sensor

Publications (2)

Publication Number Publication Date
GB2095449A GB2095449A (en) 1982-09-29
GB2095449B true GB2095449B (en) 1985-06-19

Family

ID=12167603

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8205600A Expired GB2095449B (en) 1981-02-25 1982-02-25 Fire detector test circuit

Country Status (3)

Country Link
US (1) US4506255A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS57139894A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB2095449B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8515774D0 (en) * 1985-06-21 1985-07-24 Mckenna F E Fire hazard detection systems
GB2189613B (en) * 1986-04-24 1991-01-09 Argos Alarms & Security Produc Monitoring means for testing electrical /electronic circuitry or components
US4777473A (en) * 1986-08-22 1988-10-11 Fire Burglary Instruments, Inc. Alarm system incorporating dynamic range testing
US4962373A (en) * 1989-05-01 1990-10-09 General Signal Corporation Scheme for power conservation in fire alarm system
US4956634A (en) * 1989-05-01 1990-09-11 General Signal Corporation City tie line connection for fire alarm system
US5083109A (en) * 1990-07-05 1992-01-21 Mcelroy John W Rotating source verification device
US9933278B2 (en) 2011-12-02 2018-04-03 Continental Automotive Gmbh Adaptable voltage level detection with resistive ladder
EP4176422B1 (de) * 2020-07-03 2025-03-05 Siemens Schweiz AG Verfahren zum automatischen prüfen eines brandmeldesystems
US12211369B2 (en) * 2023-01-18 2025-01-28 Honeywell International Inc. Multi-mode operation of fire alarm devices

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3566399A (en) * 1968-02-27 1971-02-23 Gulf & Western Syst Co Control station monitoring system for remote stations
US3848241A (en) * 1973-03-15 1974-11-12 Baker Ind Inc Test and integrity equipment for a mcculloh system
US4024519A (en) * 1975-10-06 1977-05-17 American District Telegraph Company Intrusion alarm test system

Also Published As

Publication number Publication date
JPS6326430B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1988-05-30
GB2095449A (en) 1982-09-29
US4506255A (en) 1985-03-19
JPS57139894A (en) 1982-08-30

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 20020224