BR112014003120A2 - sensor infravermelho de trajeto fechado e método para detectar um gás - Google Patents

sensor infravermelho de trajeto fechado e método para detectar um gás

Info

Publication number
BR112014003120A2
BR112014003120A2 BR112014003120A BR112014003120A BR112014003120A2 BR 112014003120 A2 BR112014003120 A2 BR 112014003120A2 BR 112014003120 A BR112014003120 A BR 112014003120A BR 112014003120 A BR112014003120 A BR 112014003120A BR 112014003120 A2 BR112014003120 A2 BR 112014003120A2
Authority
BR
Brazil
Prior art keywords
detecting
gas
infrared sensor
closed path
path infrared
Prior art date
Application number
BR112014003120A
Other languages
English (en)
Inventor
D Starta Christopher
J Schuler Frederick
E Uber Robert
Trautzsch Thomas
Original Assignee
Mine Safety Appliances Co
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 Mine Safety Appliances Co filed Critical Mine Safety Appliances Co
Publication of BR112014003120A2 publication Critical patent/BR112014003120A2/pt

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
    • G01N21/59—Transmissivity
    • 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
    • G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
    • 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
    • G01N21/314—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths
    • G01N21/3151—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths using two sources of radiation of different wavelengths
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/02—Mechanical
    • G01N2201/023—Controlling conditions in casing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/06—Illumination; Optics
    • G01N2201/063—Illuminating optical parts
    • G01N2201/0636—Reflectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/06—Illumination; Optics
    • G01N2201/066—Modifiable path; multiple paths in one sample
    • G01N2201/0662—Comparing measurements on two or more paths in one sample

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)
BR112014003120A 2011-09-23 2012-09-12 sensor infravermelho de trajeto fechado e método para detectar um gás BR112014003120A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/242,677 US8785857B2 (en) 2011-09-23 2011-09-23 Infrared sensor with multiple sources for gas measurement
PCT/US2012/054950 WO2013066500A1 (en) 2011-09-23 2012-09-12 Infrared sensor with mutiple sources for gas measurement

Publications (1)

Publication Number Publication Date
BR112014003120A2 true BR112014003120A2 (pt) 2017-06-13

Family

ID=47071441

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112014003120A BR112014003120A2 (pt) 2011-09-23 2012-09-12 sensor infravermelho de trajeto fechado e método para detectar um gás

Country Status (6)

Country Link
US (2) US8785857B2 (pt)
EP (1) EP2758766B1 (pt)
CN (1) CN103842801B (pt)
BR (1) BR112014003120A2 (pt)
CA (1) CA2849240C (pt)
WO (1) WO2013066500A1 (pt)

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Also Published As

Publication number Publication date
CN103842801B (zh) 2016-09-07
EP2758766B1 (en) 2024-03-13
CN103842801A (zh) 2014-06-04
US8785857B2 (en) 2014-07-22
CA2849240A1 (en) 2013-05-10
EP2758766A1 (en) 2014-07-30
US20130075615A1 (en) 2013-03-28
CA2849240C (en) 2019-11-12
WO2013066500A1 (en) 2013-05-10
US9678010B2 (en) 2017-06-13
US20140306112A1 (en) 2014-10-16

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]
B08H Application fees: decision cancelled [chapter 8.8 patent gazette]
B350 Update of information on the portal [chapter 15.35 patent gazette]