DK116228B - Particle detector, in particular smoke detector, with a double-acting monitoring circuit. - Google Patents

Particle detector, in particular smoke detector, with a double-acting monitoring circuit.

Info

Publication number
DK116228B
DK116228B DK122367AA DK122367A DK116228B DK 116228 B DK116228 B DK 116228B DK 122367A A DK122367A A DK 122367AA DK 122367 A DK122367 A DK 122367A DK 116228 B DK116228 B DK 116228B
Authority
DK
Denmark
Prior art keywords
detector
double
monitoring circuit
particular smoke
particle
Prior art date
Application number
DK122367AA
Other languages
Danish (da)
Inventor
A Vasel
Original Assignee
Pyrotector Inc
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 Pyrotector Inc filed Critical Pyrotector Inc
Publication of DK116228B publication Critical patent/DK116228B/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Warehouses Or Storage Devices (AREA)
DK122367AA 1966-03-10 1967-03-09 Particle detector, in particular smoke detector, with a double-acting monitoring circuit. DK116228B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US53314066A 1966-03-10 1966-03-10
US84564669A 1969-07-08 1969-07-08

Publications (1)

Publication Number Publication Date
DK116228B true DK116228B (en) 1969-12-22

Family

ID=27064074

Family Applications (1)

Application Number Title Priority Date Filing Date
DK122367AA DK116228B (en) 1966-03-10 1967-03-09 Particle detector, in particular smoke detector, with a double-acting monitoring circuit.

Country Status (11)

Country Link
US (1) US3579216A (en)
BE (1) BE693688A (en)
CH (1) CH459611A (en)
DE (1) DE1588617B1 (en)
DK (1) DK116228B (en)
FR (1) FR1511369A (en)
GB (1) GB1160149A (en)
IL (1) IL27293A (en)
NL (1) NL6702484A (en)
NO (1) NO120872B (en)
SE (1) SE328807B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3710367A (en) * 1970-10-28 1973-01-09 Gen Motors Corp Lamp failure indicator for a dual-filament lamp
JP4395627B2 (en) * 2007-03-19 2010-01-13 ホーコス株式会社 Mist measuring device
CN115326790B (en) * 2022-08-22 2024-04-12 东北大学秦皇岛分校 Photocurrent and single photon detection device and method

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2032746A (en) * 1928-10-26 1936-03-03 Kidde & Co Walter Detection of suspended matter in fluids
US1877279A (en) * 1930-05-20 1932-09-13 Westinghouse Electric & Mfg Co Photosensitive device
US2033466A (en) * 1931-11-11 1936-03-10 Kidde & Co Walter Selective smoke detector
US2278920A (en) * 1939-03-15 1942-04-07 American District Telegraph Co Photoelectric smoke detection system
US2668284A (en) * 1950-02-28 1954-02-02 Specialties Dev Corp Apparatus for detecting suspended matter in fluids
DE928088C (en) * 1952-11-28 1955-05-23 Standard Elek Zitaets Ges Ag Quiescent current monitored signal system according to the loop system
BE564961A (en) * 1957-02-19
US3202883A (en) * 1961-06-07 1965-08-24 Graviner Manufacturing Co Electrical circuits particularly for use with temperature detectors
US3207932A (en) * 1961-11-20 1965-09-21 Basic Electronic Controls Inc Switching device and circuit for radiation sensing apparatus
US3226703A (en) * 1962-11-19 1965-12-28 Sam M Finkle Fire detecting device

Also Published As

Publication number Publication date
IL27293A (en) 1971-03-24
DE1588617B1 (en) 1972-05-31
NO120872B (en) 1970-12-14
NL6702484A (en) 1967-09-11
CH459611A (en) 1968-07-15
FR1511369A (en) 1968-01-26
GB1160149A (en) 1969-07-30
SE328807B (en) 1970-09-21
BE693688A (en) 1967-07-17
US3579216A (en) 1971-05-18

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