FR2257899B1 - - Google Patents

Info

Publication number
FR2257899B1
FR2257899B1 FR7435387A FR7435387A FR2257899B1 FR 2257899 B1 FR2257899 B1 FR 2257899B1 FR 7435387 A FR7435387 A FR 7435387A FR 7435387 A FR7435387 A FR 7435387A FR 2257899 B1 FR2257899 B1 FR 2257899B1
Authority
FR
France
Legal status (The legal status 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 status listed.)
Expired
Application number
FR7435387A
Other versions
FR2257899A1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Training Center GmbH and Co KG
Original Assignee
Hartmann and Braun 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
Application filed by Hartmann and Braun AG filed Critical Hartmann and Braun AG
Publication of FR2257899A1 publication Critical patent/FR2257899A1/fr
Application granted granted Critical
Publication of FR2257899B1 publication Critical patent/FR2257899B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
    • G01J1/20—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle
    • G01J1/34—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using separate light paths used alternately or sequentially, e.g. flicker
    • G01J1/36—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using separate light paths used alternately or sequentially, e.g. flicker using electric radiation detectors
    • 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
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/37—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using pneumatic detection

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Optical Measuring Cells (AREA)
FR7435387A 1974-01-16 1974-10-22 Expired FR2257899B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE7401319 1974-01-16

Publications (2)

Publication Number Publication Date
FR2257899A1 FR2257899A1 (fr) 1975-08-08
FR2257899B1 true FR2257899B1 (fr) 1976-12-31

Family

ID=6643327

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7435387A Expired FR2257899B1 (fr) 1974-01-16 1974-10-22

Country Status (5)

Country Link
US (1) US3932041A (fr)
JP (1) JPS5445087Y2 (fr)
FR (1) FR2257899B1 (fr)
GB (1) GB1476535A (fr)
IT (1) IT1025329B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4467213A (en) * 1982-06-28 1984-08-21 Beckman Instruments, Inc. Source assembly for gas analysis instruments

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2227147A (en) * 1938-03-24 1940-12-31 American District Telegraph Co Photoelectric burglar alarm system
FR1389955A (fr) * 1964-04-09 1965-02-19 Hartmann & Braun Ag Photomètre à diffusion
CH514838A (de) * 1970-04-17 1971-10-31 Jaeger Erich Gerät zur Gasanalyse
DE2065118A1 (de) * 1970-10-27 1972-07-20 Siemens Ag Lichtzerhacker für ein nach dem Zweistrahlprinzip arbeitendes Ultrarot-Gasanalysegerät. Ausscheidung aus: 2052609
JPS516142Y2 (fr) * 1971-04-16 1976-02-19

Also Published As

Publication number Publication date
IT1025329B (it) 1978-08-10
GB1476535A (en) 1977-06-16
US3932041A (en) 1976-01-13
FR2257899A1 (fr) 1975-08-08
JPS50100584U (fr) 1975-08-20
JPS5445087Y2 (fr) 1979-12-24

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Legal Events

Date Code Title Description
DL Decision of the director general to leave to make available licences of right
ST Notification of lapse