CA1012792A - Photometric analyzer with temperature compensation - Google Patents

Photometric analyzer with temperature compensation

Info

Publication number
CA1012792A
CA1012792A CA205,204A CA205204A CA1012792A CA 1012792 A CA1012792 A CA 1012792A CA 205204 A CA205204 A CA 205204A CA 1012792 A CA1012792 A CA 1012792A
Authority
CA
Canada
Prior art keywords
temperature compensation
photometric analyzer
photometric
analyzer
compensation
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
CA205,204A
Other languages
English (en)
Other versions
CA205204S (en
Inventor
David F. Sacarisen
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.)
ITT Inc
Original Assignee
ITT Industries Inc
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 ITT Industries Inc filed Critical ITT Industries Inc
Application granted granted Critical
Publication of CA1012792A publication Critical patent/CA1012792A/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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
    • H03G1/0041—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using thermistors

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 Analyzing Materials Using Thermal Means (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
CA205,204A 1973-07-20 1974-07-19 Photometric analyzer with temperature compensation Expired CA1012792A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00381248A US3840305A (en) 1973-07-20 1973-07-20 Electro-optical apparatus with temperature compensation

Publications (1)

Publication Number Publication Date
CA1012792A true CA1012792A (en) 1977-06-28

Family

ID=23504276

Family Applications (1)

Application Number Title Priority Date Filing Date
CA205,204A Expired CA1012792A (en) 1973-07-20 1974-07-19 Photometric analyzer with temperature compensation

Country Status (7)

Country Link
US (1) US3840305A (it)
CA (1) CA1012792A (it)
DE (1) DE2434381A1 (it)
FR (1) FR2238150A1 (it)
GB (1) GB1472949A (it)
IT (1) IT1017210B (it)
NL (1) NL7409367A (it)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4312593A (en) * 1979-12-21 1982-01-26 E. I. Du Pont De Nemours And Company Direct readout apparatus for measuring light transmitted through liquids
GB2148487B (en) * 1983-10-13 1987-01-14 Perkins Engines Group Apparatus for measuring smoke density
JPS62112038A (ja) * 1985-11-09 1987-05-23 Horiba Ltd 吸光分析計における感度校正機構
JPH04148846A (ja) * 1990-10-13 1992-05-21 Jasco Corp 濃度補正装置
CN107966095B (zh) * 2017-12-26 2024-03-01 李明俊 一种弹簧长度检测控制方法以及检测控制系统

Also Published As

Publication number Publication date
FR2238150A1 (it) 1975-02-14
US3840305A (en) 1974-10-08
NL7409367A (nl) 1975-01-22
IT1017210B (it) 1977-07-20
GB1472949A (en) 1977-05-11
DE2434381A1 (de) 1975-02-27

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