AT293920B - Alarm device - Google Patents

Alarm device

Info

Publication number
AT293920B
AT293920B AT134469A AT134469A AT293920B AT 293920 B AT293920 B AT 293920B AT 134469 A AT134469 A AT 134469A AT 134469 A AT134469 A AT 134469A AT 293920 B AT293920 B AT 293920B
Authority
AT
Austria
Prior art keywords
alarm device
alarm
Prior art date
Application number
AT134469A
Other languages
German (de)
Original Assignee
Francais Detection Eletr
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 Francais Detection Eletr filed Critical Francais Detection Eletr
Application granted granted Critical
Publication of AT293920B publication Critical patent/AT293920B/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T7/00—Details of radiation-measuring instruments
    • G01T7/12—Provision for actuation of an alarm
    • G01T7/125—Alarm- or controlling circuits using ionisation chambers, proportional counters or Geiger-Mueller tubes, also functioning as UV detectors
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Alarm Systems (AREA)
AT134469A 1968-02-15 1969-02-10 Alarm device AT293920B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR139945 1968-02-15

Publications (1)

Publication Number Publication Date
AT293920B true AT293920B (en) 1971-10-25

Family

ID=8646019

Family Applications (1)

Application Number Title Priority Date Filing Date
AT134469A AT293920B (en) 1968-02-15 1969-02-10 Alarm device

Country Status (11)

Country Link
US (1) US3621262A (en)
AT (1) AT293920B (en)
BE (1) BE727699A (en)
CA (1) CA929251A (en)
CH (1) CH486746A (en)
DE (1) DE1906075C3 (en)
ES (1) ES363669A1 (en)
FR (1) FR1565498A (en)
GB (1) GB1255221A (en)
NL (1) NL164981C (en)
SE (1) SE344254B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1353615A (en) * 1970-08-11 1974-05-22 Prucill P M Fire detection systems
JPS5136119B1 (en) * 1971-04-15 1976-10-06
JPS5512635B2 (en) * 1972-07-26 1980-04-03
US3775762A (en) * 1972-09-15 1973-11-27 Us Air Force Gas multiplication ultraviolet detector system for fire detection
FR2257118B1 (en) * 1974-01-04 1976-11-26 Commissariat Energie Atomique
JPS5231699A (en) * 1975-07-25 1977-03-10 Hochiki Corp Fire senser
DE2614487C2 (en) * 1976-04-03 1983-06-23 Total Feuerschutz GmbH, 6802 Ladenburg Circuit arrangement for evaluating a random pulse sequence from a radiation-sensitive gas discharge detector
JPS52153759A (en) * 1976-06-17 1977-12-21 Hochiki Co Storage type detector
US4162425A (en) * 1977-06-30 1979-07-24 Detector Electronics Corporation Ultraviolet detection tube quenching circuitry
JPH0648293B2 (en) * 1983-03-18 1994-06-22 和芙 橋本 Automatic measurement and alarm device for radioactivity
US4521120A (en) * 1983-09-15 1985-06-04 The United States Of America As Represented By The Secretary Of Agriculture Forest fire rate of spread with timers method
GB2199656B (en) * 1987-01-07 1990-10-17 Graviner Ltd Detection of electromagnetic radiation
DE3706986A1 (en) * 1987-03-04 1988-09-15 Preussag Ag Feuerschutz Method for evaluating the UV component in the flame spectrum by means of an electronic flame detector
US6600425B1 (en) * 2002-03-19 2003-07-29 Elite Access Systems, Inc. Method and apparatus for detecting and recording episodic overloads in a circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3175165A (en) * 1962-06-29 1965-03-23 Edward S Dayhoff Light controlled variable frequency pulse generator
US3393319A (en) * 1965-09-30 1968-07-16 Bausch & Lomb Photoelectric circuit for counting light pulses above a minimium value

Also Published As

Publication number Publication date
DE1906075C3 (en) 1974-02-21
SE344254B (en) 1972-04-04
NL164981B (en) 1980-09-15
BE727699A (en) 1969-07-01
FR1565498A (en) 1969-05-02
DE1906075B2 (en) 1973-07-26
DE1906075A1 (en) 1969-09-04
CH486746A (en) 1970-02-28
GB1255221A (en) 1971-12-01
ES363669A1 (en) 1971-01-01
US3621262A (en) 1971-11-16
NL6901997A (en) 1969-08-19
NL164981C (en) 1981-02-16
CA929251A (en) 1973-06-26

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee