JPS5770447A - Ph measuring apparatus provided with automatic discrimination apparatus of ph standard - Google Patents

Ph measuring apparatus provided with automatic discrimination apparatus of ph standard

Info

Publication number
JPS5770447A
JPS5770447A JP55148540A JP14854080A JPS5770447A JP S5770447 A JPS5770447 A JP S5770447A JP 55148540 A JP55148540 A JP 55148540A JP 14854080 A JP14854080 A JP 14854080A JP S5770447 A JPS5770447 A JP S5770447A
Authority
JP
Japan
Prior art keywords
standard solution
converter
function
electrode
calibration
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.)
Granted
Application number
JP55148540A
Other languages
Japanese (ja)
Other versions
JPS6313147B2 (en
Inventor
Norihiko Tsutsumi
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.)
Horiba Ltd
Original Assignee
Horiba 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 Horiba Ltd filed Critical Horiba Ltd
Priority to JP55148540A priority Critical patent/JPS5770447A/en
Publication of JPS5770447A publication Critical patent/JPS5770447A/en
Publication of JPS6313147B2 publication Critical patent/JPS6313147B2/ja
Granted 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
    • G01N27/416—Systems
    • G01N27/4163—Systems checking the operation of, or calibrating, the measuring apparatus
    • G01N27/4165—Systems checking the operation of, or calibrating, the measuring apparatus for pH meters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Molecular Biology (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 prevent the malfunction at the time of memorizing a calibration straight light by using a pH standard solution and to eliminate or reduce labor of calibration operation, by providing an apparatus with a function of discriminating the kind of the pH standard solution. CONSTITUTION:Electromotive force of an electrode for pH measurement 1 is inputted into an A/D converter 3 through a high impedance amplifier 2. Noise by an outside induction currnt is prevented by an insulation circuit 4. An arithmetic unit 5 is composed of a microcomputer programmed to have the following functions, i.e. automatic calibration function of unsymmetrical potential variation and sensitivity variation by operating output of the converter 3 at the time of immersing an electrode 1 in the liquid to be inspected on the basis of a calibration straight line memorized by using a pH standard solution preliminarily and the function memorizing a set up potential range of the plural kinds of each pH standard solution and also, the function discriminating the output of the converter 3 at the time of immersing the electrode 1 in an optional standard solution and kinds of the pH standard solution from the ptential range. In the figure, 6 is a printer of the operation results, 7 is a D/A converter, and 8 is a meter.
JP55148540A 1980-10-21 1980-10-21 Ph measuring apparatus provided with automatic discrimination apparatus of ph standard Granted JPS5770447A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55148540A JPS5770447A (en) 1980-10-21 1980-10-21 Ph measuring apparatus provided with automatic discrimination apparatus of ph standard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55148540A JPS5770447A (en) 1980-10-21 1980-10-21 Ph measuring apparatus provided with automatic discrimination apparatus of ph standard

Publications (2)

Publication Number Publication Date
JPS5770447A true JPS5770447A (en) 1982-04-30
JPS6313147B2 JPS6313147B2 (en) 1988-03-24

Family

ID=15455053

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55148540A Granted JPS5770447A (en) 1980-10-21 1980-10-21 Ph measuring apparatus provided with automatic discrimination apparatus of ph standard

Country Status (1)

Country Link
JP (1) JPS5770447A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103412091A (en) * 2013-08-21 2013-11-27 重庆耐德能源装备集成有限公司 PH value measuring method and device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103412091A (en) * 2013-08-21 2013-11-27 重庆耐德能源装备集成有限公司 PH value measuring method and device
CN103412091B (en) * 2013-08-21 2016-01-20 重庆耐德能源装备集成有限公司 pH value measuring method and device

Also Published As

Publication number Publication date
JPS6313147B2 (en) 1988-03-24

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