GB2101784B - Fire alarms - Google Patents

Fire alarms

Info

Publication number
GB2101784B
GB2101784B GB08217748A GB8217748A GB2101784B GB 2101784 B GB2101784 B GB 2101784B GB 08217748 A GB08217748 A GB 08217748A GB 8217748 A GB8217748 A GB 8217748A GB 2101784 B GB2101784 B GB 2101784B
Authority
GB
United Kingdom
Prior art keywords
fire alarms
alarms
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.)
Expired
Application number
GB08217748A
Other versions
GB2101784A (en
Inventor
Duncan Miles Johnson
Simon David Price
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.)
Chloride Group Ltd
Original Assignee
Chloride Group 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 Chloride Group Ltd filed Critical Chloride Group Ltd
Priority to GB08217748A priority Critical patent/GB2101784B/en
Publication of GB2101784A publication Critical patent/GB2101784A/en
Application granted granted Critical
Publication of GB2101784B publication Critical patent/GB2101784B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere
    • G01R31/2829—Testing of circuits in sensor or actuator 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
    • G08B29/12—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
GB08217748A 1981-06-23 1982-06-18 Fire alarms Expired GB2101784B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08217748A GB2101784B (en) 1981-06-23 1982-06-18 Fire alarms

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8119315 1981-06-23
GB08217748A GB2101784B (en) 1981-06-23 1982-06-18 Fire alarms

Publications (2)

Publication Number Publication Date
GB2101784A GB2101784A (en) 1983-01-19
GB2101784B true GB2101784B (en) 1985-11-27

Family

ID=26279886

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08217748A Expired GB2101784B (en) 1981-06-23 1982-06-18 Fire alarms

Country Status (1)

Country Link
GB (1) GB2101784B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58134392A (en) * 1982-02-04 1983-08-10 ニツタン株式会社 Fire alarm
GB8429487D0 (en) * 1984-11-22 1985-01-03 Thorn Emi Automation Ltd Electrical apparatus
GB2177833B (en) * 1985-07-12 1989-07-26 Gerald Charles Dudley Window detector
GB2217125B (en) * 1988-04-08 1992-02-05 Digital Audio Limited An alarm system
US5440293A (en) * 1992-05-29 1995-08-08 Pittway Corporation Detector supervision apparatus and method
GB2337625B (en) 1998-05-20 2002-11-27 Apollo Fire Detectors Ltd Detector removal signalling device
US8878552B2 (en) 2011-12-12 2014-11-04 Utc Fire And Security Americas Corp., Inc. End-of-line capacitor for measuring wiring impedance of emergency notification circuits

Also Published As

Publication number Publication date
GB2101784A (en) 1983-01-19

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20010618