BE869380A - Procede et agencement de mise en evidence de particules en suspension - Google Patents

Procede et agencement de mise en evidence de particules en suspension

Info

Publication number
BE869380A
BE869380A BE189595A BE189595A BE869380A BE 869380 A BE869380 A BE 869380A BE 189595 A BE189595 A BE 189595A BE 189595 A BE189595 A BE 189595A BE 869380 A BE869380 A BE 869380A
Authority
BE
Belgium
Prior art keywords
evidence
suspension
particles
arrangement
Prior art date
Application number
BE189595A
Other languages
English (en)
French (fr)
Original Assignee
Heimann Gmbh
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 Heimann Gmbh filed Critical Heimann Gmbh
Publication of BE869380A publication Critical patent/BE869380A/xx

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
    • 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
    • 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
    • G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
    • G08B17/107—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device for detecting light-scattering due to smoke

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Measurement Of Radiation (AREA)
BE189595A 1977-07-29 1978-07-28 Procede et agencement de mise en evidence de particules en suspension BE869380A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2734347A DE2734347B2 (de) 1977-07-29 1977-07-29 Anordnung zum Nachweis von Schwebeteilchen

Publications (1)

Publication Number Publication Date
BE869380A true BE869380A (fr) 1978-11-16

Family

ID=6015204

Family Applications (1)

Application Number Title Priority Date Filing Date
BE189595A BE869380A (fr) 1977-07-29 1978-07-28 Procede et agencement de mise en evidence de particules en suspension

Country Status (8)

Country Link
AT (1) AT375777B (it)
BE (1) BE869380A (it)
BR (1) BR7804881A (it)
CH (1) CH624767A5 (it)
DE (1) DE2734347B2 (it)
IT (1) IT1097182B (it)
NL (1) NL7807117A (it)
SE (1) SE430828B (it)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4028188A1 (de) * 1990-09-05 1992-03-12 Esser Sicherheitstechnik Brandmelder mit einem streulicht- und einem ionisationssystem
US5633501A (en) * 1995-06-07 1997-05-27 Pittway Corporation Combination photoelectric and ionization smoke detector

Also Published As

Publication number Publication date
BR7804881A (pt) 1979-04-17
NL7807117A (nl) 1979-01-31
DE2734347B2 (de) 1979-12-06
CH624767A5 (en) 1981-08-14
DE2734347A1 (de) 1979-02-01
IT1097182B (it) 1985-08-26
AT375777B (de) 1984-09-10
IT7825764A0 (it) 1978-07-17
SE430828B (sv) 1983-12-12
SE7808218L (sv) 1979-01-30
ATA546878A (de) 1984-01-15

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: HEIMANN G.M.B.H.

Effective date: 19850731