CH297463A - Device for determining changes in the composition of a gas. - Google Patents

Device for determining changes in the composition of a gas.

Info

Publication number
CH297463A
CH297463A CH297463DA CH297463A CH 297463 A CH297463 A CH 297463A CH 297463D A CH297463D A CH 297463DA CH 297463 A CH297463 A CH 297463A
Authority
CH
Switzerland
Prior art keywords
composition
gas
determining changes
determining
changes
Prior art date
Application number
Other languages
German (de)
Inventor
Elektro-Watt Elektrische Un Ag
Original Assignee
Elektro Watt Elektrische Und I
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 Elektro Watt Elektrische Und I filed Critical Elektro Watt Elektrische Und I
Publication of CH297463A publication Critical patent/CH297463A/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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
    • G01N27/64—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber
    • G01N27/66—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber and measuring current or voltage
    • 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
CH297463D 1949-08-01 1950-06-27 Device for determining changes in the composition of a gas. CH297463A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US297463XA 1949-08-01 1949-08-01

Publications (1)

Publication Number Publication Date
CH297463A true CH297463A (en) 1954-03-31

Family

ID=21850662

Family Applications (1)

Application Number Title Priority Date Filing Date
CH297463D CH297463A (en) 1949-08-01 1950-06-27 Device for determining changes in the composition of a gas.

Country Status (3)

Country Link
CH (1) CH297463A (en)
DE (1) DE844220C (en)
FR (1) FR1027984A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH355380A (en) * 1957-10-30 1961-06-30 Cerberus Gmbh Device for determining changes in the composition of a gas
FR1568048A (en) * 1968-01-19 1969-05-23
US4021671A (en) * 1975-07-07 1977-05-03 Gulf & Western Manufacturing Company (Systems) Ionization detector
FR2430612A1 (en) * 1978-07-05 1980-02-01 Ugon Pierre Adjustable ionisation chamber for gas and smoke detectors - uses manoeuvrable arm to regulate radiation beam and so provide stable means of correction

Also Published As

Publication number Publication date
DE844220C (en) 1952-07-17
FR1027984A (en) 1953-05-18

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