JPS5744845A - Concentration meter - Google Patents
Concentration meterInfo
- 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
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
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Food Science & Technology (AREA)
- Biochemistry (AREA)
- Urology & Nephrology (AREA)
- Hematology (AREA)
- Biophysics (AREA)
- Medicinal Chemistry (AREA)
- Analytical Chemistry (AREA)
- Molecular Biology (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
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.
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)
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)
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 |
-
1980
- 1980-08-29 JP JP11838180A patent/JPS5744845A/en active Pending
Patent Citations (1)
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)
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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