GB8914119D0 - Semi-automatic gas zeroing system - Google Patents

Semi-automatic gas zeroing system

Info

Publication number
GB8914119D0
GB8914119D0 GB898914119A GB8914119A GB8914119D0 GB 8914119 D0 GB8914119 D0 GB 8914119D0 GB 898914119 A GB898914119 A GB 898914119A GB 8914119 A GB8914119 A GB 8914119A GB 8914119 D0 GB8914119 D0 GB 8914119D0
Authority
GB
United Kingdom
Prior art keywords
semi
automatic gas
zeroing system
zeroing
automatic
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.)
Withdrawn
Application number
GB898914119A
Other versions
GB2221295A (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.)
Meda Pharmaceuticals Ltd
Original Assignee
Flow Labs Ltd
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 Flow Labs Ltd filed Critical Flow Labs Ltd
Publication of GB8914119D0 publication Critical patent/GB8914119D0/en
Publication of GB2221295A publication Critical patent/GB2221295A/en
Withdrawn legal-status Critical Current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
    • G01N21/3504—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L1/00—Enclosures; Chambers
    • B01L1/02—Air-pressure chambers; Air-locks therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0006—Calibrating gas analysers
    • 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
    • G01N2201/12—Circuits of general importance; Signal processing
    • G01N2201/127—Calibration; base line adjustment; drift compensation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
GB8914119A 1988-06-24 1989-06-20 Semi-automatic zeroing of gas measuring system Withdrawn GB2221295A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB888815039A GB8815039D0 (en) 1988-06-24 1988-06-24 Semi-automatic gas zeroing system

Publications (2)

Publication Number Publication Date
GB8914119D0 true GB8914119D0 (en) 1989-08-09
GB2221295A GB2221295A (en) 1990-01-31

Family

ID=10639276

Family Applications (2)

Application Number Title Priority Date Filing Date
GB888815039A Pending GB8815039D0 (en) 1988-06-24 1988-06-24 Semi-automatic gas zeroing system
GB8914119A Withdrawn GB2221295A (en) 1988-06-24 1989-06-20 Semi-automatic zeroing of gas measuring system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB888815039A Pending GB8815039D0 (en) 1988-06-24 1988-06-24 Semi-automatic gas zeroing system

Country Status (1)

Country Link
GB (2) GB8815039D0 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935459A (en) * 1974-06-24 1976-01-27 Sun Electric Corporation Apparatus and method of automatically zeroing an exhaust emission analyzer
US3969626A (en) * 1975-02-18 1976-07-13 E. I. Du Pont De Nemours And Company Method and apparatus for detecting total reduced sulfur
DE2520197C2 (en) * 1975-05-06 1983-11-17 Siemens AG, 1000 Berlin und 8000 München Arrangement for drift compensation of a gas analyzer
AU564610B2 (en) * 1982-08-31 1987-08-20 Becton Dickinson & Company Detecting biological activity by infrared analysis
CH667738A5 (en) * 1984-04-04 1988-10-31 Cerberus Ag METHOD AND DEVICE FOR DETECTING CARBON MONOXIDE.
DE3619301A1 (en) * 1986-06-07 1987-12-10 Ruhrgas Ag METHOD AND DEVICE FOR MEASURING ALDEHYDE CONCENTRATION IN EXHAUST GASES
US4902896A (en) * 1987-05-08 1990-02-20 Mine Safety Appliances Company Infrared fluid analyzer

Also Published As

Publication number Publication date
GB8815039D0 (en) 1988-08-03
GB2221295A (en) 1990-01-31

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)