JPS576353A - Measuring circuit for ion sensor - Google Patents

Measuring circuit for ion sensor

Info

Publication number
JPS576353A
JPS576353A JP7970380A JP7970380A JPS576353A JP S576353 A JPS576353 A JP S576353A JP 7970380 A JP7970380 A JP 7970380A JP 7970380 A JP7970380 A JP 7970380A JP S576353 A JPS576353 A JP S576353A
Authority
JP
Japan
Prior art keywords
temperature dependent
sensor
gate
dependent characteristics
ion sensor
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
JP7970380A
Other languages
Japanese (ja)
Inventor
Kiyoo Shimada
Hayami Yoshimochi
Makoto Yano
Kyoichiro Shibatani
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.)
Kuraray Co Ltd
Original Assignee
Kuraray Co 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 Kuraray Co Ltd filed Critical Kuraray Co Ltd
Priority to JP7970380A priority Critical patent/JPS576353A/en
Priority to GB8112795A priority patent/GB2077439B/en
Priority to US06/257,605 priority patent/US4385274A/en
Priority to DE19813116884 priority patent/DE3116884A1/en
Publication of JPS576353A publication Critical patent/JPS576353A/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
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/403—Cells and electrode assemblies
    • G01N27/414—Ion-sensitive or chemical field-effect transistors, i.e. ISFETS or CHEMFETS
    • G01N27/4148—Integrated circuits therefor, e.g. fabricated by CMOS processing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electrochemistry (AREA)
  • Molecular Biology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

PURPOSE:To accurately measure the liquid to be inspected or gas, by eliminating temperature dependent characteristics of electric conductivity of channel of sensor gate by the sum of temperature dependent characteristics of reference electrode and interfacial electric potential of gate part. CONSTITUTION:An ion sensor and reference electrode 16 are immersed in a liquid 12 to be inspected in the vessel 11 and a drain 2 of the ion sensor is connected to a constant voltage power source 13 and also, a source-drain electric current Id is controlled by an electric current controller 17. When the current value of said current Id is set so that a temperature dependent characteristics of electric conductivity of channel of a sensor gate 7 are the same with the sum of the temperature dependent characteristics of the electrode 16 and interfacial electric potential of the gate 7, the potential difference output signal of the ion sensor and electrode 16 depends upon only the ion concentration, even when the temperature of the liquid 12 is varied.
JP7970380A 1980-04-28 1980-06-12 Measuring circuit for ion sensor Pending JPS576353A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP7970380A JPS576353A (en) 1980-06-12 1980-06-12 Measuring circuit for ion sensor
GB8112795A GB2077439B (en) 1980-04-28 1981-04-24 Compensating temperature-dependent characteristic changes in ion-sensitive fet transducers
US06/257,605 US4385274A (en) 1980-04-28 1981-04-27 Method and device for compensating temperature-dependent characteristic change in ion-sensitive FET transducer
DE19813116884 DE3116884A1 (en) 1980-04-28 1981-04-28 METHOD AND CIRCUIT FOR MEASURING ION ACTIVITY IN LIQUIDS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7970380A JPS576353A (en) 1980-06-12 1980-06-12 Measuring circuit for ion sensor

Publications (1)

Publication Number Publication Date
JPS576353A true JPS576353A (en) 1982-01-13

Family

ID=13697560

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7970380A Pending JPS576353A (en) 1980-04-28 1980-06-12 Measuring circuit for ion sensor

Country Status (1)

Country Link
JP (1) JPS576353A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6217703A (en) * 1985-07-16 1987-01-26 Copal Electron Co Ltd 1/2 wavelength plate

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6217703A (en) * 1985-07-16 1987-01-26 Copal Electron Co Ltd 1/2 wavelength plate

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