GB1352977A - Detection devices for use in infra-red gas analysis - Google Patents

Detection devices for use in infra-red gas analysis

Info

Publication number
GB1352977A
GB1352977A GB940672A GB940672A GB1352977A GB 1352977 A GB1352977 A GB 1352977A GB 940672 A GB940672 A GB 940672A GB 940672 A GB940672 A GB 940672A GB 1352977 A GB1352977 A GB 1352977A
Authority
GB
United Kingdom
Prior art keywords
gas
volumes
detecting
infrared
gas analysis
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.)
Expired
Application number
GB940672A
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of GB1352977A publication Critical patent/GB1352977A/en
Expired 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

1352977 Infrared gas analysis SIEMENS A G 29 Feb 1972 [1 March 1971] 9406/72 Heading G1A A detecting device for use in infrared gas analysis comprises first and second volumes, V1 and V1, joined by a first passageway L1 to define a first gas containing structure, third and fourth volumes, V2 and V2', joined by a second passageway L2 to define a second gas containing structure, and detecting means D, K connected between the two structures so as to be responsive to differences in gas pressure, or to gas flow, therebetween produced by virtue of differences in heating resulting from incidence of I. R. radiation upon the two structures. The centre of gravity of detecting gas filling the first structure is located between the first and second volumes, while the centre of gravity of detecting gas filling the second structure is located between the third and fourth volumes. A gas analyzer using the device is shown in Fig. 5. Infrared from a source 1 is reflected at 2, modulated by a chopper 4 and divided to form two beams. A measuring beam passes through a chamber 6 through which flows the gas under test, and a reference beam passes through a sealed reference chamber 7.
GB940672A 1971-03-01 1972-02-29 Detection devices for use in infra-red gas analysis Expired GB1352977A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712109568 DE2109568A1 (en) 1971-03-01 1971-03-01 Detection system for an ultra-red gas analyzer

Publications (1)

Publication Number Publication Date
GB1352977A true GB1352977A (en) 1974-05-15

Family

ID=5800128

Family Applications (1)

Application Number Title Priority Date Filing Date
GB940672A Expired GB1352977A (en) 1971-03-01 1972-02-29 Detection devices for use in infra-red gas analysis

Country Status (7)

Country Link
JP (1) JPS5129837B1 (en)
BE (1) BE780056A (en)
DE (1) DE2109568A1 (en)
FR (1) FR2127853A5 (en)
GB (1) GB1352977A (en)
IT (1) IT947898B (en)
LU (1) LU64854A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5852308A (en) * 1997-06-30 1998-12-22 Honeywell Inc. Micromachined inferential opto-thermal gas sensor
US5869749A (en) * 1997-04-30 1999-02-09 Honeywell Inc. Micromachined integrated opto-flow gas/liquid sensor
US5892140A (en) * 1997-04-30 1999-04-06 Honeywell Inc. Micromachined inferential opto-thermal gas sensor

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2702978A1 (en) * 1976-01-26 1977-08-04 Fuji Electric Co Ltd Compensator for pneumatic interferences - is for IR gas analysers and consists of two gas filled chambers
DE7640723U1 (en) * 1976-12-27 1977-06-16 Hartmann & Braun Ag, 6000 Frankfurt PNEUMATIC RADIATION DETECTOR
JPS54143151A (en) * 1978-04-28 1979-11-08 Hitachi Ltd Heat-sensitive recorder
JPS5976351U (en) * 1982-11-17 1984-05-23 株式会社リコー Thermal head positioning device
DE9014162U1 (en) * 1990-10-11 1990-12-20 Siemens Ag, 8000 Muenchen, De
DE10104556A1 (en) * 2001-02-01 2002-02-07 Siemens Ag Non-dispersive infrared gas analyzer used for determining concentration of carbon dioxide in measuring gas has region of radiation between infrared radiation source and measuring cuvette together enclosed by housing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5869749A (en) * 1997-04-30 1999-02-09 Honeywell Inc. Micromachined integrated opto-flow gas/liquid sensor
US5892140A (en) * 1997-04-30 1999-04-06 Honeywell Inc. Micromachined inferential opto-thermal gas sensor
US5852308A (en) * 1997-06-30 1998-12-22 Honeywell Inc. Micromachined inferential opto-thermal gas sensor

Also Published As

Publication number Publication date
BE780056A (en) 1972-09-01
DE2109568A1 (en) 1972-09-14
JPS5129837B1 (en) 1976-08-27
IT947898B (en) 1973-05-30
LU64854A1 (en) 1972-07-05
FR2127853A5 (en) 1972-10-13

Similar Documents

Publication Publication Date Title
CH550395A (en) DEVICE FOR STERILE PRESSURE MEASUREMENT OF A LIQUID OR GAS.
ES403465A1 (en) Device for measuring the opacity of smokes
GB1352977A (en) Detection devices for use in infra-red gas analysis
GB1223453A (en) Apparatus for sensing the turbidity of a fluid
GB1276194A (en) Non-dispersive infrared gas analyzer with unbalanced operation
GB1156090A (en) A Method for Objectively Testing Ampoules for the Presence of Extraneous Particles in the Ampoule Liquid.
GB1396760A (en) Non-dispersive infrared gas analyzer having sample and reference beams using flow sensitive detector and with unbalanced operation
GB1337076A (en) Differential refractometer
GB1173415A (en) Non-dispersive Selective Infrared Gas Analysis
JPS52140384A (en) Flaw detector
GB1312838A (en) System for measuring light transmittance through absorpitive or diffusive media
JPS5510534A (en) Photo-acoustic analyzer
FR2084505A5 (en) Thermo-electric detector for liquid present - in a gas
JPS5263790A (en) Measurement of steam content
JPS5421896A (en) No2 densitometer
JPS5238955A (en) Measuring device of gas leakage
JPS5558438A (en) Device for measuring concentration by infrared ray
GB1164775A (en) Improvements in or relating to a selective twin-beam infra-red gas analyser
GB1069636A (en) Improvements in or relating to methods and apparatus for analysing substances,especially gases by selective absorption of a single beam of infra-red radiation
GB1402095A (en) Analysis of moving fluids
JPS5548637A (en) Photoacoustic detector
GB1348233A (en) Adjustment of optical radiation transmission in optical apparatus
JPS53100293A (en) Gas densitometer
GB661990A (en) Apparatus for continuous gas analysis
GB1362361A (en) Method of and apparatus for continuously measuring the hydrogen content of a chlorine gas stream

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee