FR2379067A1 - PNEUMATIC RADIATION DETECTOR - Google Patents

PNEUMATIC RADIATION DETECTOR

Info

Publication number
FR2379067A1
FR2379067A1 FR7737678A FR7737678A FR2379067A1 FR 2379067 A1 FR2379067 A1 FR 2379067A1 FR 7737678 A FR7737678 A FR 7737678A FR 7737678 A FR7737678 A FR 7737678A FR 2379067 A1 FR2379067 A1 FR 2379067A1
Authority
FR
France
Prior art keywords
radiation
chamber
detection chambers
chambers
parts
Prior art date
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.)
Granted
Application number
FR7737678A
Other languages
French (fr)
Other versions
FR2379067B1 (en
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 FR2379067A1 publication Critical patent/FR2379067A1/en
Application granted granted Critical
Publication of FR2379067B1 publication Critical patent/FR2379067B1/fr
Granted legal-status Critical Current

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
    • G01N21/25—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)
  • 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)

Abstract

Détecteur pneumatique de rayonnement, en particulier pour un analyseur de gaz à deux faisceaux infrarouges, dans lequel un modulateur 3 découpe le rayonnement en deux trajets en opposition de phase, et dans lequel le détecteur associé à chaque trajet du rayonnement possède deux chambres de détection 7, 8 et 9, 10 qui se suivent, sont remplies d'un gaz absorbant le rayonnement et possèdent des fenêtres qui laissent passer le rayonnement, auxquelles est reliée une autre chambre 11 située à mi-distance entre les chambres de détection et dans laquelle se trouve un condensateur à membrane 12 qui partage la chambre en deux parties 13, 16 et transforme la différence de pression entre les parties de la chambre en un signal électrique, et caractérisé en ce qu'aussi bien les deux chambres de détection 7, 9 qui reçoivent d'abord le rayonnement sur chaque trajet que les deux chambres de détection suivantes 8, 10 sont en liaison avec une partie 13, 16 de la chambre 11 du condensateur à membrane 12, et que toutes les chambres ou parties de chambres 7 à 10, 13, 16 ainsi que les conduits de gaz 14, 15, 17, 18 sont dimensionnés et disposés de façon que le centre de gravité des masses gazeuses situées dans les chambres de détection 7, 9 qui reçoivent d'abord le rayonnement et dans la partie associée 13 de la chambre 11 du condensateur à membrane 12 coïncide avec le centre de gravité des masses gazeuses situées dans les chambres de détection 8, 10 auxquelles arrivent ensuite le rayonnement et dans la partie associée 16 de la chambre 11 du condensateur à membrane 12.Pneumatic radiation detector, in particular for a gas analyzer with two infrared beams, in which a modulator 3 divides the radiation into two paths in phase opposition, and in which the detector associated with each path of the radiation has two detection chambers 7 , 8 and 9, 10 which follow, are filled with a gas absorbing the radiation and have windows which allow the radiation to pass, to which is connected another chamber 11 located halfway between the detection chambers and in which is finds a membrane capacitor 12 which divides the chamber into two parts 13, 16 and transforms the pressure difference between the parts of the chamber into an electrical signal, and characterized in that both the two detection chambers 7, 9 which first receive the radiation on each path that the next two detection chambers 8, 10 are connected with a part 13, 16 of the chamber 11 of the membrane capacitor 12, and that all the chambers or parts of chambers 7 to 10, 13, 16 as well as the gas conduits 14, 15, 17, 18 are dimensioned and arranged so that the center of gravity of the gaseous masses situated in the detection chambers 7 , 9 which first receive the radiation and in the associated part 13 of the chamber 11 of the membrane capacitor 12 coincides with the center of gravity of the gaseous masses located in the detection chambers 8, 10 to which the radiation then arrives and in the associated part 16 of the chamber 11 of the membrane condenser 12.

FR7737678A 1976-12-27 1977-12-14 PNEUMATIC RADIATION DETECTOR Granted FR2379067A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19767640723 DE7640723U1 (en) 1976-12-27 1976-12-27 PNEUMATIC RADIATION DETECTOR

Publications (2)

Publication Number Publication Date
FR2379067A1 true FR2379067A1 (en) 1978-08-25
FR2379067B1 FR2379067B1 (en) 1983-05-13

Family

ID=6672641

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7737678A Granted FR2379067A1 (en) 1976-12-27 1977-12-14 PNEUMATIC RADIATION DETECTOR

Country Status (6)

Country Link
JP (1) JPS6027953Y2 (en)
DE (1) DE7640723U1 (en)
FR (1) FR2379067A1 (en)
GB (1) GB1582804A (en)
IN (1) IN148200B (en)
NL (1) NL7714148A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2910188C2 (en) * 1979-03-15 1985-01-10 Hartmann & Braun Ag, 6000 Frankfurt Non-dispersive infrared gas analyzer
DE2936473A1 (en) * 1979-09-10 1981-04-02 Hartmann & Braun Ag, 6000 Frankfurt Dual beam IR gas analyser - has rotating modulator perpendicular to beams for conc. range null point setting
DE19540072B4 (en) * 1995-10-27 2004-12-30 Emerson Process Management Manufacturing Gmbh & Co. Ohg Optical-pneumatic radiation detector
US12082561B2 (en) * 2017-07-23 2024-09-10 Terahertz Group Ltd. System and method for non-invasively determining egg properties

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2127853A5 (en) * 1971-03-01 1972-10-13 Siemens Ag
US3725702A (en) * 1969-01-29 1973-04-03 Hartmann & Braun Ag Infrared gas analyzer
DE2410364A1 (en) * 1974-03-05 1975-09-11 Heinz Dr Rer Nat Hummel Infra-red gas analyser - is for modulated light with split differential detector and cancels zero drifts
US3968369A (en) * 1974-11-15 1976-07-06 Bergwerksverband Gmbh Non-dispersive infrared gas analysis device with triple layer receiver

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3725702A (en) * 1969-01-29 1973-04-03 Hartmann & Braun Ag Infrared gas analyzer
FR2127853A5 (en) * 1971-03-01 1972-10-13 Siemens Ag
DE2410364A1 (en) * 1974-03-05 1975-09-11 Heinz Dr Rer Nat Hummel Infra-red gas analyser - is for modulated light with split differential detector and cancels zero drifts
US3968369A (en) * 1974-11-15 1976-07-06 Bergwerksverband Gmbh Non-dispersive infrared gas analysis device with triple layer receiver

Also Published As

Publication number Publication date
GB1582804A (en) 1981-01-14
DE7640723U1 (en) 1977-06-16
JPS6027953Y2 (en) 1985-08-23
FR2379067B1 (en) 1983-05-13
IN148200B (en) 1980-11-29
NL7714148A (en) 1978-06-29
JPS5391596U (en) 1978-07-26

Similar Documents

Publication Publication Date Title
RU93046325A (en) Elastomer tube with a vessel
FR2470888A1 (en) BELLOWS CONNECTION FOR GAS OR LIQUID
CA2076174A1 (en) Calibration for ultra high purity gas analysis
FR2685428B1 (en) TAP FOR COMPRESSED OR LIQUEFIED GASES.
RO70573A (en) PROCEDURE FOR THE SEPARATION OF ALPHATIC HYDROCARBONS NON-CURRENT WITH 2 ... 8 CARBONATES IN THE MOLECULE FROM ITS MIXTURES WITH OTHER GASES
ATE49057T1 (en) LIQUID CHROMATOGRAPHY COLUMN.
AU551348B2 (en) Separating gas mixtures by pressure swing adsorption
FR2379067A1 (en) PNEUMATIC RADIATION DETECTOR
FR2456316A1 (en) NON-DISPERSITIVE GAS ANALYZER WITH INFRARED RADIUS
MY113935A (en) Fluid flow measurement
US3357232A (en) Analyzing apparatus with pressure-actuated fluid valving system
FR2386822A1 (en) DEVICE FOR INJECTING DOSE QUANTITIES OF SAMPLES IN A GAS OR LIQUID PHASE CHROMATOGRAPH UNDER HIGH PRESSURE
FR2407020A1 (en) TIME CONTROL MIXER DEVICE
CA2157854A1 (en) Pressure Reduction System Testing
EP0056463A3 (en) Gas mixer
BE900179A (en) DEVICE FOR SEALING HOLES.
US3788751A (en) Gas analyzer
FR2647598B1 (en) THERMOELECTRIC DEVICE OPERATING BETWEEN TWO FLOWS OF FLUIDS, ONE GAS, THE OTHER LIQUID
RU2040447C1 (en) Device for sealing joints of space vehicle compartments
NO910274D0 (en) PROCEDURE AND DEVICE FOR AA PREVENT SEPARATION OF MASSES.
FR2506541A1 (en) AMPLIFIER WITH TRANSISTOR OPERATING IN MICROWAVE IN PULSE RATE
BE901597A (en) DEVICE FOR AVOIDING OVERPRESSURE IN THE HOUSING OF STOPPING DEVICES.
JPS5292123A (en) Parting construction for pipe line with double tube construction
JPS5441787A (en) Detector for infrared gas analyzer
JPS6488365A (en) Gas chromatograph analyzer

Legal Events

Date Code Title Description
ST Notification of lapse