GB1169802A - Device for Calibrating Analysis Apparatus - Google Patents

Device for Calibrating Analysis Apparatus

Info

Publication number
GB1169802A
GB1169802A GB219467A GB219467A GB1169802A GB 1169802 A GB1169802 A GB 1169802A GB 219467 A GB219467 A GB 219467A GB 219467 A GB219467 A GB 219467A GB 1169802 A GB1169802 A GB 1169802A
Authority
GB
United Kingdom
Prior art keywords
gas
analyzer
amplifier
output
programmer
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
GB219467A
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.)
Institut de Recherches de la Siderurgie Francaise IRSID
Original Assignee
Institut de Recherches de la Siderurgie Francaise IRSID
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 Institut de Recherches de la Siderurgie Francaise IRSID filed Critical Institut de Recherches de la Siderurgie Francaise IRSID
Publication of GB1169802A publication Critical patent/GB1169802A/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
    • G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
    • G01N21/274—Calibration, base line adjustment, drift correction
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
    • G01D18/002—Automatic recalibration
    • G01D18/004—Continuous recalibration

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (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)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

1,169, 802. Calibrating infrared and other electrical gas analyzers. INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAIS. Jan. 16, 1967 [Jan. 18, 1966], No. 2194/67. Headings G1A and G1N. An infrared or other analyzer is calibrated by a programmer which periodically shuts off the test gas and passes two or more calibration gases through the analyzer in sequence. The corresponding analyzer outputs are compared with preset reference signals and any difference used to supply motors which reduce the difference. Once every two hours, a signal from the programmer 31 closes a valve 48 to shut off the gas under test and opens a valve 51 to supply gas free of the gas being tested for. The output of the analyzer is compared in amplifier 21 with a predetermined value set on potentiometer 22 and the amplifier output, if any, adjusts the position of a diaphragm 30 until the analyzer output equals the predetermined value. The programmer then closes valve 51 and opens 52 to admit gas having the maximum concentration of gas to be tested for. At the same time relays 24, 29 are changed over and the analyzer output is compared in amplifier 21 with a value set on potentiometer 23 to accord with the actual composition of the calibration gas. The output of amplifier 21 adjusts the gain of amplifier 15 until the analyzer output reaches the predetermined value. Means may be provided to repeat the calibration cycle so long as the corrections made by either of motors 27 or 28 is greater than a certain size. A switch is provided for manual initiation of the calibration cycle at any time. The invention may be applied to chromatographs, spectrometers and thermal conductivity analyzers and analyzers operating by paramagnetism.
GB219467A 1966-01-18 1967-01-16 Device for Calibrating Analysis Apparatus Expired GB1169802A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR46307 1966-01-18

Publications (1)

Publication Number Publication Date
GB1169802A true GB1169802A (en) 1969-11-05

Family

ID=8599022

Family Applications (1)

Application Number Title Priority Date Filing Date
GB219467A Expired GB1169802A (en) 1966-01-18 1967-01-16 Device for Calibrating Analysis Apparatus

Country Status (3)

Country Link
BE (1) BE691870A (en)
DE (1) DE1598640A1 (en)
GB (1) GB1169802A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2175392A (en) * 1985-04-26 1986-11-26 Hochiki Co Output correction system for analogue sensor
FR2583187A1 (en) * 1985-06-07 1986-12-12 Gaso Philippe Programmable automatic unit serving for testing timing tachographs
GB2183334A (en) * 1985-11-20 1987-06-03 Pitcraft Summit Ltd Gas detector and mining machine
EP0253872A1 (en) * 1986-01-10 1988-01-27 Andros Analyzers Inc Infrared gas analyzer with automatic zero adjustment.
GB2204684A (en) * 1987-05-08 1988-11-16 Mine Safety Appliances Co Infrared fluid analyzer
CN103852095A (en) * 2012-11-29 2014-06-11 霍尼韦尔国际公司 Gas detection management system with replacement modules

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4320873A1 (en) * 1993-06-23 1995-01-05 Hekatron Gmbh Circuit arrangement for an optical detector for environmental monitoring and display of an interference medium
DE4320861A1 (en) * 1993-06-23 1995-01-05 Hekatron Gmbh Circuit arrangement for an optical detector for environmental monitoring and display of an interference medium

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2175392A (en) * 1985-04-26 1986-11-26 Hochiki Co Output correction system for analogue sensor
GB2175392B (en) * 1985-04-26 1989-09-06 Hochiki Co Fire alarm system including an output correction system
FR2583187A1 (en) * 1985-06-07 1986-12-12 Gaso Philippe Programmable automatic unit serving for testing timing tachographs
GB2183334A (en) * 1985-11-20 1987-06-03 Pitcraft Summit Ltd Gas detector and mining machine
GB2183334B (en) * 1985-11-20 1989-10-04 Pitcraft Summit Ltd Gas detector and mining machine
EP0253872A1 (en) * 1986-01-10 1988-01-27 Andros Analyzers Inc Infrared gas analyzer with automatic zero adjustment.
EP0253872B1 (en) * 1986-01-10 1994-04-20 Andros Incorporated Infrared gas analyzer with automatic zero adjustment
GB2204684A (en) * 1987-05-08 1988-11-16 Mine Safety Appliances Co Infrared fluid analyzer
GB2204684B (en) * 1987-05-08 1992-01-29 Mine Safety Appliances Co Infrared fluid analyser
CN103852095A (en) * 2012-11-29 2014-06-11 霍尼韦尔国际公司 Gas detection management system with replacement modules
CN103852095B (en) * 2012-11-29 2017-08-04 霍尼韦尔国际公司 Gas detecting tube reason system with replacement module

Also Published As

Publication number Publication date
DE1598640A1 (en) 1971-04-01
BE691870A (en) 1967-05-29

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