GB1002416A - Improvements in or relating to apparatus for measuring or responsive to the electrical conductivity of a liquid - Google Patents
Improvements in or relating to apparatus for measuring or responsive to the electrical conductivity of a liquidInfo
- Publication number
- GB1002416A GB1002416A GB640162A GB640162A GB1002416A GB 1002416 A GB1002416 A GB 1002416A GB 640162 A GB640162 A GB 640162A GB 640162 A GB640162 A GB 640162A GB 1002416 A GB1002416 A GB 1002416A
- Authority
- GB
- United Kingdom
- Prior art keywords
- current
- electrodes
- measuring
- liquid
- flow
- 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
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
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/06—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (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
1,002,416. Liquid conductivity measuring apparatus. WAYNE KERR LABORATORIES Ltd., and R. CALVERT. Feb. 19, 1963 [Feb. 19, 1962], No. 6401/62. Heading G1N. In an apparatus for measuring liquid conductivity comprising a pipe 11 of insulating material in a metallic pipe line 10, current from an A.C. source is caused to flow between an electrode 12 and the two metal pipes 10, and the potential gradients arising from the current flow are detected by pairs of electrodes 13, 14; 15,16 connected to high impedance feedback amplifiers 25, 28, the sum of the amplifier voltages being used to regulate the current supplied to electrode 12, by means of a servomotor 37, which responds to error signals from a comparator 35 wherein the sum of the voltages is compared with a reference voltage from a source 36. The regulation is effected by a potentiometer 21 and the current indicated by meter 38 is shown by mathematical analysis to be an indication of conductivity. The arrangement is said to overcome boundary layer effects at composite current feeding and measuring electrodes, and may operate an alarm or affect control annular electrodes which do not impede the flow of liquid may be used, and the reference source may be a further winding on transformer 18. Current electrodes may be provided in the pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB640162A GB1002416A (en) | 1962-02-19 | 1962-02-19 | Improvements in or relating to apparatus for measuring or responsive to the electrical conductivity of a liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB640162A GB1002416A (en) | 1962-02-19 | 1962-02-19 | Improvements in or relating to apparatus for measuring or responsive to the electrical conductivity of a liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1002416A true GB1002416A (en) | 1965-08-25 |
Family
ID=9813845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB640162A Expired GB1002416A (en) | 1962-02-19 | 1962-02-19 | Improvements in or relating to apparatus for measuring or responsive to the electrical conductivity of a liquid |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1002416A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3664306A (en) * | 1966-09-20 | 1972-05-23 | Nat Res Dev | Apparatus for the detection of mastitis in milk animals |
| FR2337338A1 (en) * | 1975-12-29 | 1977-07-29 | Raytheon Co | ELECTROLYTIC MEASURING DEVICE |
| GB2000299A (en) * | 1977-06-24 | 1979-01-04 | Bactomatic Inc | Detecting metabolic activity |
| GB2256278A (en) * | 1991-04-05 | 1992-12-02 | Keith Hemingway | Testing electrical characteristics of materials |
-
1962
- 1962-02-19 GB GB640162A patent/GB1002416A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3664306A (en) * | 1966-09-20 | 1972-05-23 | Nat Res Dev | Apparatus for the detection of mastitis in milk animals |
| FR2337338A1 (en) * | 1975-12-29 | 1977-07-29 | Raytheon Co | ELECTROLYTIC MEASURING DEVICE |
| GB2000299A (en) * | 1977-06-24 | 1979-01-04 | Bactomatic Inc | Detecting metabolic activity |
| GB2000299B (en) * | 1977-06-24 | 1982-03-03 | Bactomatic Inc | Detecting metabolic activity |
| GB2256278A (en) * | 1991-04-05 | 1992-12-02 | Keith Hemingway | Testing electrical characteristics of materials |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1517697A (en) | Measuring cells for measuring electrical conductivity of liquids | |
| GB1463880A (en) | Apparatus for conductivity measurements | |
| GB1002416A (en) | Improvements in or relating to apparatus for measuring or responsive to the electrical conductivity of a liquid | |
| GB1071229A (en) | Conductivity measuring system | |
| GB1131324A (en) | Improvements in or relating to coulometric titration apparatus | |
| GB720761A (en) | Improvements in and relating to magnetic amplifier systems | |
| GB1285103A (en) | Electrical measurement converter based on the two-wire principle | |
| GB1460892A (en) | Apparatus for m'asuring the electrical conductivity of a liquor sample | |
| GB1223308A (en) | A.c. magnetic flowmeter with d.c. bias on electrodes | |
| GB1520349A (en) | Conductivity measurement apparatus | |
| GB1019630A (en) | A method of and apparatus for determining whether or not the quantity of inert gas present in the gas discharge electrodes of a fuel cell is above a particular value | |
| GB936045A (en) | Improvements in or relating to apparatus for measuring or responsive to the conductivity of a material | |
| GB984982A (en) | An arrangement for measuring direct current, and/or for producing a signal in dependence upon the value of a direct current | |
| GB993440A (en) | Improvements in or relating to electrochemical fluid treatment apparatus | |
| GB964390A (en) | Improvements in or relating to apparatus for measuring the electrical conductivity of a liquid | |
| GB982290A (en) | Improvements in or relating to apparatus for measuring the electrical conductivity of liquids | |
| GB1218200A (en) | In-line electrical measuring cell | |
| GB808100A (en) | Electrode circuit assemblies for use in electromagnetic flowmeters | |
| GB811347A (en) | Improvements in or relating to devices for measuring liquid flow | |
| GB1104719A (en) | The maintenance of a desired mean temperature in a length of material | |
| US3823082A (en) | Moisture analysis apparatus | |
| US3510261A (en) | Alternating current flame ionization detector | |
| GB991709A (en) | Improvements in or relating to electrical measuring means | |
| GB826195A (en) | Improvements in and relating to apparatus for detecting or measuring the contents of fine particles in a flowing fluid | |
| GB1115202A (en) | Apparatus for measuring very small direct currents |