JPS5744845A - Concentration meter - Google Patents

Concentration meter

Info

Publication number
JPS5744845A
JPS5744845A JP11838180A JP11838180A JPS5744845A JP S5744845 A JPS5744845 A JP S5744845A JP 11838180 A JP11838180 A JP 11838180A JP 11838180 A JP11838180 A JP 11838180A JP S5744845 A JPS5744845 A JP S5744845A
Authority
JP
Japan
Prior art keywords
concentration
conductivity
temperature
constitution
dialysis liquid
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
JP11838180A
Other languages
Japanese (ja)
Inventor
Fumikazu Murase
Yasuo Igai
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.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
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 Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP11838180A priority Critical patent/JPS5744845A/en
Publication of JPS5744845A publication Critical patent/JPS5744845A/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
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/483—Physical analysis of biological material
    • G01N33/487—Physical analysis of biological material of liquid biological material

Abstract

PURPOSE:To sense the concentration of dialysis liquid highly accurately in a broad temperature range and to make the constitution of the concentration meter simple and compact by computing conductivity data by a microcomputer. CONSTITUTION:The temperature and the conductivity of blood dialysis liquid and the like are sensed by a temperature sensing element 2 and a conductivity sensing element 3 in a concentration measuring cell 1, a temperature sensing circuit 4, and a conductivity sensing circuit 5. The A/D conversion of the sensed values is performed, and the results are imputted to a CPU10 in the microcomputer, where the computation based on concentration function formula with the electric conductivity and the temperature stored in ROM11 as the functions is performed. The resulting concentration values are displayed on a display 15 via RAM12. In this method wherein temperature compensating thermistor and the like are not used, the concentration of the dialysis liquid is detected highly accurately in the broad temperature range, and the constitution of the concentration meter is made to be simple and compact.
JP11838180A 1980-08-29 1980-08-29 Concentration meter Pending JPS5744845A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11838180A JPS5744845A (en) 1980-08-29 1980-08-29 Concentration meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11838180A JPS5744845A (en) 1980-08-29 1980-08-29 Concentration meter

Publications (1)

Publication Number Publication Date
JPS5744845A true JPS5744845A (en) 1982-03-13

Family

ID=14735286

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11838180A Pending JPS5744845A (en) 1980-08-29 1980-08-29 Concentration meter

Country Status (1)

Country Link
JP (1) JPS5744845A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58198749A (en) * 1982-05-13 1983-11-18 Masayoshi Hoshina Apparatus for measuring concentration of electrolyte solution
JPS58184962U (en) * 1982-06-01 1983-12-08 株式会社リコー Facsimile reader
JP2001264277A (en) * 2000-03-15 2001-09-26 Kanto Chem Co Inc Method and device for detecting concentration and chemical diluting dispensing device
US10155082B2 (en) 2002-04-10 2018-12-18 Baxter International Inc. Enhanced signal detection for access disconnection systems

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5267699A (en) * 1975-12-03 1977-06-04 Fujihira Kougiyou Kk Measuring method and apparatus for organic acid contents

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5267699A (en) * 1975-12-03 1977-06-04 Fujihira Kougiyou Kk Measuring method and apparatus for organic acid contents

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58198749A (en) * 1982-05-13 1983-11-18 Masayoshi Hoshina Apparatus for measuring concentration of electrolyte solution
JPS58184962U (en) * 1982-06-01 1983-12-08 株式会社リコー Facsimile reader
JP2001264277A (en) * 2000-03-15 2001-09-26 Kanto Chem Co Inc Method and device for detecting concentration and chemical diluting dispensing device
JP4648513B2 (en) * 2000-03-15 2011-03-09 関東化学株式会社 Concentration detection method, concentration detection device, and drug dilution blending device
US10155082B2 (en) 2002-04-10 2018-12-18 Baxter International Inc. Enhanced signal detection for access disconnection systems

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