ZA706196B - Apparatus for supervising the continuity of leads in alarm installations - Google Patents

Apparatus for supervising the continuity of leads in alarm installations

Info

Publication number
ZA706196B
ZA706196B ZA706196A ZA706196A ZA706196B ZA 706196 B ZA706196 B ZA 706196B ZA 706196 A ZA706196 A ZA 706196A ZA 706196 A ZA706196 A ZA 706196A ZA 706196 B ZA706196 B ZA 706196B
Authority
ZA
South Africa
Prior art keywords
supervising
continuity
leads
alarm installations
installations
Prior art date
Application number
ZA706196A
Inventor
A Gnaegi
O Meier
P Mueller
Original Assignee
Cerberus Ag
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 Cerberus Ag filed Critical Cerberus Ag
Publication of ZA706196B publication Critical patent/ZA706196B/en

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
    • G08B29/06—Monitoring of the line circuits, e.g. signalling of line faults
ZA706196A 1969-09-16 1970-09-10 Apparatus for supervising the continuity of leads in alarm installations ZA706196B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1398169A CH495022A (en) 1969-09-16 1969-09-16 Fire alarm system with a device for line monitoring

Publications (1)

Publication Number Publication Date
ZA706196B true ZA706196B (en) 1971-05-27

Family

ID=4396930

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA706196A ZA706196B (en) 1969-09-16 1970-09-10 Apparatus for supervising the continuity of leads in alarm installations

Country Status (9)

Country Link
US (1) US3665461A (en)
JP (1) JPS4822038B1 (en)
CA (1) CA957745A (en)
CH (1) CH495022A (en)
DE (1) DE2038795C3 (en)
FR (1) FR2061175A5 (en)
GB (1) GB1319615A (en)
SE (1) SE359180B (en)
ZA (1) ZA706196B (en)

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* Cited by examiner, † Cited by third party
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US3702468A (en) * 1970-08-10 1972-11-07 Nittan Co Ltd Fire alarming system
US3980995A (en) * 1974-12-17 1976-09-14 Tulio Vasquez Alarm system
US4103299A (en) * 1976-10-12 1978-07-25 Cutler-Hammer, Inc. Two-wire pilot device solid state control system
DE2713280C3 (en) * 1977-03-25 1986-10-23 Esser Sicherheitstechnik GmbH & Co KG, 4040 Neuss Function-testable fire alarm system
US4141007A (en) * 1977-04-22 1979-02-20 Kavasilios Michael A Central alarm conditioning detecting and alerting system
US4191946A (en) * 1977-10-20 1980-03-04 Gonzalez Raymond J Warning apparatus with a line integrity supervisory circuit
JPS595955B2 (en) * 1979-07-27 1984-02-08 ホーチキ株式会社 fire alarm
US4385287A (en) * 1979-12-07 1983-05-24 Securicor Granley Systems Limited Multiple alarm condition detection and signalling
EP0085769B1 (en) * 1980-02-07 1985-04-17 Schlumberger Electronics (U.K.) Limited Electricity meters
EP0066879A1 (en) * 1981-06-05 1982-12-15 Hekatron GmbH Circuit arrangement for the transmission of measured values to a central station, especially for a fire signalling system
DE3122474A1 (en) * 1981-06-05 1982-12-23 Hekatron GmbH, 7811 Sulzburg "CIRCUIT ARRANGEMENT FOR TRANSMITTING MEASURED VALUES, IN PARTICULAR IN A FIRE DETECTING SYSTEM, TO A CENTRAL UNIT"
JPS58103718U (en) * 1981-12-30 1983-07-14 松下電器産業株式会社 packaging box
US4481502A (en) * 1982-03-26 1984-11-06 Dawson N Rick Central smoke alarm and annunciator
US4648123A (en) * 1982-11-29 1987-03-03 C-Cor Labs, Inc. Remote level measurement system for use in a multi-terminal communications system
US4512033A (en) * 1982-11-29 1985-04-16 C-Cor Labs, Inc. Remote level adjustment system for use in a multi-terminal communications system
US4538137A (en) * 1983-01-20 1985-08-27 Nittan Company, Limited Fire detector
GB2151058A (en) * 1983-12-08 1985-07-10 Sound Diffusion Plc Fire alarm systems with incipient hyper-sensitivity monitoring
GB8429487D0 (en) * 1984-11-22 1985-01-03 Thorn Emi Automation Ltd Electrical apparatus
US5138562A (en) * 1988-04-14 1992-08-11 Fike Corporation Environmental protection system useful for the fire detection and suppression
US4977527A (en) * 1988-04-14 1990-12-11 Fike Corporation Threshold compensation and calibration in distributed environmental detection system for fire detection and suppression
US5008840A (en) * 1988-05-27 1991-04-16 Napco Security Systems, Inc. Multi-zone microprocessor fire control apparatus
US4991123A (en) * 1989-01-06 1991-02-05 Cerberus A.G. Alarm system
US5594786A (en) 1990-07-27 1997-01-14 Executone Information Systems, Inc. Patient care and communication system
US5822544A (en) * 1990-07-27 1998-10-13 Executone Information Systems, Inc. Patient care and communication system
US6958706B2 (en) * 1990-07-27 2005-10-25 Hill-Rom Services, Inc. Patient care and communication system
JPH06130124A (en) * 1992-10-20 1994-05-13 Mitsubishi Electric Corp Test circuit of signal input circuit having threshold value
GB2337625B (en) 1998-05-20 2002-11-27 Apollo Fire Detectors Ltd Detector removal signalling device
US6163263A (en) * 1999-02-02 2000-12-19 Pittway Corporation Circuitry for electrical device in multi-device communications system
US6567001B1 (en) 2000-02-24 2003-05-20 Simplex Time Recorder Co. Fire control panel monitoring for degradation of wiring integrity during alarm state
US6791453B1 (en) 2000-08-11 2004-09-14 Walter Kidde Portable Equipment, Inc. Communication protocol for interconnected hazardous condition detectors, and system employing same
US7126487B2 (en) * 2004-10-15 2006-10-24 Ranco Incorporated Of Delaware Circuit and method for prioritization of hazardous condition messages for interconnected hazardous condition detectors
US7333010B2 (en) * 2005-03-25 2008-02-19 Simplexgrinnell Lp Method and apparatus for verifying operation of notification appliances during low input voltage condition
EP1777671A1 (en) * 2005-10-19 2007-04-25 Honeywell International, Inc. Monitoring of alarm system wiring
US8063763B2 (en) 2008-11-25 2011-11-22 Simplexgrinnell Lp System for testing NAC operability using reduced operating voltage
PL1855261T5 (en) * 2006-05-11 2014-11-28 Siemens Schweiz Ag Method and device for monitoring a signalling line of a fire alarm system for faults
DE102008003799B4 (en) * 2008-01-10 2021-06-10 Robert Bosch Gmbh Monitoring device for a reporting system, reporting system and method for monitoring the reporting system
DE102008015999B4 (en) * 2008-03-27 2011-04-21 Novar Gmbh Transmission path - Test method for a hazard alarm system
DE102008028631B4 (en) * 2008-06-18 2011-06-22 GEZE GmbH, 71229 Line monitoring of smoke switches
FR2934401B1 (en) * 2008-07-28 2010-08-13 Legrand France IMPROVED SAFETY INSTALLATION AND CORRESPONDING MONITORING METHOD
US8232884B2 (en) * 2009-04-24 2012-07-31 Gentex Corporation Carbon monoxide and smoke detectors having distinct alarm indications and a test button that indicates improper operation
US8836532B2 (en) 2009-07-16 2014-09-16 Gentex Corporation Notification appliance and method thereof
DE102011002926B4 (en) 2011-01-20 2014-11-06 Geze Gmbh Line monitoring of smoke switches
DE102016200914A1 (en) 2016-01-22 2017-07-27 Hekatron Vertriebs Gmbh Device for line monitoring at a locking device of fire doors with smoke switches
DE102016200913A1 (en) 2016-01-22 2017-07-27 Hekatron Vertriebs Gmbh Device for line monitoring of hazard detectors and locking devices
DE102018112299B4 (en) 2018-05-23 2020-12-03 Minimax Gmbh & Co. Kg Device, method and control module for monitoring a two-wire line
US10832557B2 (en) * 2019-04-11 2020-11-10 Honeywell International Inc. Operating a fire alarm system
CN112242049A (en) 2019-07-19 2021-01-19 开利公司 State detection of alarm sounding component

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3072827A (en) * 1957-04-01 1963-01-08 Joy Mfg Co Circuit protecting device
US3192506A (en) * 1960-03-04 1965-06-29 Sargrove Electronics Ltd Electronic indicator system more particularly for use in mines

Also Published As

Publication number Publication date
GB1319615A (en) 1973-06-06
CH495022A (en) 1970-08-15
DE2038795B2 (en) 1973-05-03
DE2038795C3 (en) 1973-11-29
CA957745A (en) 1974-11-12
SE359180B (en) 1973-08-20
US3665461A (en) 1972-05-23
JPS4822038B1 (en) 1973-07-03
DE2038795A1 (en) 1971-04-08
FR2061175A5 (en) 1971-06-18

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