BE727699A - - Google Patents

Info

Publication number
BE727699A
BE727699A BE727699DA BE727699A BE 727699 A BE727699 A BE 727699A BE 727699D A BE727699D A BE 727699DA BE 727699 A BE727699 A BE 727699A
Authority
BE
Belgium
Application number
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 filed Critical
Publication of BE727699A publication Critical patent/BE727699A/xx

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)
BE727699D 1968-02-15 1969-01-30 BE727699A (ja)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
BE727699A true BE727699A (ja) 1969-07-01

Family

ID=8646019

Family Applications (1)

Application Number Title Priority Date Filing Date
BE727699D BE727699A (ja) 1968-02-15 1969-01-30

Country Status (11)

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

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 (ja) * 1971-04-15 1976-10-06
JPS5512635B2 (ja) * 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 (ja) * 1974-01-04 1976-11-26 Commissariat Energie Atomique
JPS5231699A (en) * 1975-07-25 1977-03-10 Hochiki Corp Fire senser
DE2614487C2 (de) * 1976-04-03 1983-06-23 Total Feuerschutz GmbH, 6802 Ladenburg Schaltungsanordnung zum Auswerten einer Zufallsimpulsfolge von einem strahlungsempfindlichen Gasentladungsdetektor
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 (ja) * 1983-03-18 1994-06-22 和芙 橋本 放射能等の自動測定警報装置
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 (de) * 1987-03-04 1988-09-15 Preussag Ag Feuerschutz Verfahren zur auswertung des uv-anteils im flammenspektrum durch einen elektronischen flammenmelder
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
DE1906075A1 (de) 1969-09-04
CH486746A (fr) 1970-02-28
NL164981B (nl) 1980-09-15
SE344254B (ja) 1972-04-04
DE1906075B2 (de) 1973-07-26
US3621262A (en) 1971-11-16
NL164981C (nl) 1981-02-16
CA929251A (en) 1973-06-26
FR1565498A (ja) 1969-05-02
NL6901997A (ja) 1969-08-19
DE1906075C3 (de) 1974-02-21
GB1255221A (en) 1971-12-01
AT293920B (de) 1971-10-25
ES363669A1 (es) 1971-01-01

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Legal Events

Date Code Title Description
RE20 Patent expired

Owner name: LA DEDECTION ELECTRONIQUE FRANCAISE

Effective date: 19890130