GB752699A - Capacitance-type fluid contents measuring apparatus - Google Patents
Capacitance-type fluid contents measuring apparatusInfo
- Publication number
- GB752699A GB752699A GB14577/54A GB1457754A GB752699A GB 752699 A GB752699 A GB 752699A GB 14577/54 A GB14577/54 A GB 14577/54A GB 1457754 A GB1457754 A GB 1457754A GB 752699 A GB752699 A GB 752699A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fluid
- electrode
- condenser
- measuring
- conductive layer
- 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
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
- G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
752,699. Electric tests ; capacitors. ENGINEERING RESEARCH CORPORATION, Ltd. May 18, 1954 [June 11, 1953], No. 14577/54. Class 37. In apparatus for measuring the fluid contents of an irregular container by means of a measuring condenser having the fluid as its dielectric, and having one electrode shaped so that the surface level length of contact of the electrode with the fluid at every level is proportional to the surface area of the fluid at that level whereby a linear relationship is obtained between capacity and fluid quantity, is characterized in the provision of an electrostatic shield which eliminates the effects of stray capacities. The measuring condenser (Figs. 2, 3) comprises vertical, coaxial, cylindrical members 3, 4, the outer one, 3, being completely covered with conducting material but with apertures 7 to allow the fluid 8 to pass into the space between members 3, 4, and the inner one, 4, having a profiled conductive layer 13 on a rigid insulation member 29 co-operating with the electrode on member 3. A further conductive layer 6 covers substantially the entire remaining area of the member 29, with an edge portion 34 uniformly spaced from the profiled edge 35 of layer 13. In the complete circuit arrangement (Fig. 1) the voltage drop across the measuring condenser 2 is compared in a bridge network with that across a reference condenser 22, any unbalance voltage being amplified at 15 and fed to a servomotor 24 which rebalances the network by adjusting the voltage across the reference arms, and also drives an indicator 28, indicating the fluid content of the container 1. The further conductive layer 6 is earthed to act as a shield against fringe capacity effects, and to eliminate the capacity between electrode 3 and the inside surface of the inner electrode 13. The measuring condenser may be other than cylindrical and either or both electrodes may be profiled. The gauge may be used with liquids and powdered or granular solid dielectric materials.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US752699XA | 1953-06-11 | 1953-06-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB752699A true GB752699A (en) | 1956-07-11 |
Family
ID=22124603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14577/54A Expired GB752699A (en) | 1953-06-11 | 1954-05-18 | Capacitance-type fluid contents measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB752699A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3228245A (en) * | 1962-03-02 | 1966-01-11 | Simmonds Precision Products | Liquid quantity gage |
| US4152748A (en) * | 1977-05-05 | 1979-05-01 | Arkans Edward J | Multiple transducer |
| WO2017093921A1 (en) | 2015-12-01 | 2017-06-08 | Centitvc- Centro De Nanotecnologia E Materiais Técnicos, Funcionais E Inteligentes | Fuel tank with integrated level sensors, in particular for aircraft |
| WO2018225010A1 (en) | 2017-06-07 | 2018-12-13 | Critical Materials, S.A. | Fuel tank with integrated level sensors, in particular for aerial vehicles |
-
1954
- 1954-05-18 GB GB14577/54A patent/GB752699A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3228245A (en) * | 1962-03-02 | 1966-01-11 | Simmonds Precision Products | Liquid quantity gage |
| US4152748A (en) * | 1977-05-05 | 1979-05-01 | Arkans Edward J | Multiple transducer |
| WO2017093921A1 (en) | 2015-12-01 | 2017-06-08 | Centitvc- Centro De Nanotecnologia E Materiais Técnicos, Funcionais E Inteligentes | Fuel tank with integrated level sensors, in particular for aircraft |
| WO2018225010A1 (en) | 2017-06-07 | 2018-12-13 | Critical Materials, S.A. | Fuel tank with integrated level sensors, in particular for aerial vehicles |
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