JPS5246887A - Drift correcting circuit - Google Patents

Drift correcting circuit

Info

Publication number
JPS5246887A
JPS5246887A JP12249275A JP12249275A JPS5246887A JP S5246887 A JPS5246887 A JP S5246887A JP 12249275 A JP12249275 A JP 12249275A JP 12249275 A JP12249275 A JP 12249275A JP S5246887 A JPS5246887 A JP S5246887A
Authority
JP
Japan
Prior art keywords
correcting circuit
drift correcting
drift
spectophotometer
integrator
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.)
Pending
Application number
JP12249275A
Other languages
Japanese (ja)
Inventor
Kenichiro Takahashi
Koichi Uchino
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP12249275A priority Critical patent/JPS5246887A/en
Publication of JPS5246887A publication Critical patent/JPS5246887A/en
Pending 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

Landscapes

  • 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)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

PURPOSE:To generate voltage linearly changing at an arbitrary gradient with an integrator and add this to a measuring signal, thereby correcting the drift of an atomic absorption spectophotometer.
JP12249275A 1975-10-13 1975-10-13 Drift correcting circuit Pending JPS5246887A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12249275A JPS5246887A (en) 1975-10-13 1975-10-13 Drift correcting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12249275A JPS5246887A (en) 1975-10-13 1975-10-13 Drift correcting circuit

Publications (1)

Publication Number Publication Date
JPS5246887A true JPS5246887A (en) 1977-04-14

Family

ID=14837174

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12249275A Pending JPS5246887A (en) 1975-10-13 1975-10-13 Drift correcting circuit

Country Status (1)

Country Link
JP (1) JPS5246887A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4775237A (en) * 1987-03-16 1988-10-04 Innovative Medical Systems Corp. Electro-optical detection system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4775237A (en) * 1987-03-16 1988-10-04 Innovative Medical Systems Corp. Electro-optical detection system

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