CH558059A - IONIZATION FIRE ALARM. - Google Patents

IONIZATION FIRE ALARM.

Info

Publication number
CH558059A
CH558059A CH1820772A CH1820772A CH558059A CH 558059 A CH558059 A CH 558059A CH 1820772 A CH1820772 A CH 1820772A CH 1820772 A CH1820772 A CH 1820772A CH 558059 A CH558059 A CH 558059A
Authority
CH
Switzerland
Prior art keywords
fire alarm
ionization fire
ionization
alarm
fire
Prior art date
Application number
CH1820772A
Other languages
German (de)
Original Assignee
Preussag 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
Priority claimed from DE19712165619 external-priority patent/DE2165619C2/en
Priority claimed from DE2230932A external-priority patent/DE2230932C2/en
Application filed by Preussag Ag filed Critical Preussag Ag
Publication of CH558059A publication Critical patent/CH558059A/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
    • G08B17/113—Constructional details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J41/00—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas; Discharge tubes for evacuation by diffusion of ions
    • H01J41/02—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas
    • H01J41/06—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas with ionisation by means of cold cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J41/00—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas; Discharge tubes for evacuation by diffusion of ions
    • H01J41/02—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas
    • H01J41/08—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas with ionisation by means of radioactive substances, e.g. alphatrons

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Fire-Detection Mechanisms (AREA)
CH1820772A 1971-12-30 1972-12-14 IONIZATION FIRE ALARM. CH558059A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19712165619 DE2165619C2 (en) 1971-12-30 Ionization fire alarms
DE2230932A DE2230932C2 (en) 1972-06-23 1972-06-23 Ionization fire alarms

Publications (1)

Publication Number Publication Date
CH558059A true CH558059A (en) 1975-01-15

Family

ID=25762258

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1820772A CH558059A (en) 1971-12-30 1972-12-14 IONIZATION FIRE ALARM.

Country Status (9)

Country Link
JP (1) JPS4879998A (en)
AT (1) AT332762B (en)
BE (1) BE793205A (en)
CH (1) CH558059A (en)
ES (1) ES410210A1 (en)
FR (1) FR2166005B3 (en)
GB (1) GB1407639A (en)
IT (1) IT976193B (en)
NL (1) NL7217843A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH551057A (en) * 1973-04-17 1974-06-28 Cerberus Ag IONIZATION ALARM.
AT378431B (en) * 1983-06-30 1985-08-12 Siemens Ag Oesterreich SAMPLE CHAMBER OF CONVENTIONAL SIZE FOR INSTALLATION OF AN IONIZATION SMOKE DETECTOR INSERT

Also Published As

Publication number Publication date
BE793205A (en) 1973-04-16
GB1407639A (en) 1975-09-24
JPS4879998A (en) 1973-10-26
ES410210A1 (en) 1975-12-01
NL7217843A (en) 1973-07-03
ATA1095272A (en) 1976-01-15
IT976193B (en) 1974-08-20
AT332762B (en) 1976-10-11
FR2166005B3 (en) 1976-02-13
FR2166005A1 (en) 1973-08-10

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Legal Events

Date Code Title Description
PL Patent ceased