CH486746A - Alarm device - Google Patents

Alarm device

Info

Publication number
CH486746A
CH486746A CH152969A CH152969A CH486746A CH 486746 A CH486746 A CH 486746A CH 152969 A CH152969 A CH 152969A CH 152969 A CH152969 A CH 152969A CH 486746 A CH486746 A CH 486746A
Authority
CH
Switzerland
Prior art keywords
alarm device
alarm
Prior art date
Application number
CH152969A
Other languages
French (fr)
Inventor
Lecuyer Daniel
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
Priority to IL3166169A priority Critical patent/IL31661A/en
Publication of CH486746A publication Critical patent/CH486746A/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 OR 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)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Alarm Systems (AREA)
CH152969A 1968-02-15 1969-01-31 Alarm device CH486746A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IL3166169A IL31661A (en) 1968-02-21 1969-02-20 Thiepine derivatives and their preparation

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
CH486746A true CH486746A (en) 1970-02-28

Family

ID=8646019

Family Applications (1)

Application Number Title Priority Date Filing Date
CH152969A CH486746A (en) 1968-02-15 1969-01-31 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
NL164981C (en) 1981-02-16
AT293920B (en) 1971-10-25
US3621262A (en) 1971-11-16
BE727699A (en) 1969-07-01
NL164981B (en) 1980-09-15
FR1565498A (en) 1969-05-02
NL6901997A (en) 1969-08-19
CA929251A (en) 1973-06-26
ES363669A1 (en) 1971-01-01
GB1255221A (en) 1971-12-01
DE1906075C3 (en) 1974-02-21
SE344254B (en) 1972-04-04
DE1906075B2 (en) 1973-07-26
DE1906075A1 (en) 1969-09-04

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Legal Events

Date Code Title Description
PL Patent ceased