GB795189A - Improvements relating to capacitors for use in liquid level gauges - Google Patents
Improvements relating to capacitors for use in liquid level gaugesInfo
- Publication number
- GB795189A GB795189A GB2585354A GB2585354A GB795189A GB 795189 A GB795189 A GB 795189A GB 2585354 A GB2585354 A GB 2585354A GB 2585354 A GB2585354 A GB 2585354A GB 795189 A GB795189 A GB 795189A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strip
- tube
- capacitor
- wound
- ribbons
- 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
- 239000003990 capacitor Substances 0.000 title abstract 11
- 239000007788 liquid Substances 0.000 title abstract 2
- 239000002828 fuel tank Substances 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 239000011347 resin Substances 0.000 abstract 2
- 229920005989 resin Polymers 0.000 abstract 2
- 238000012216 screening Methods 0.000 abstract 2
- 239000004020 conductor Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 125000006850 spacer group Chemical group 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/04—Liquid dielectrics
-
- 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
- G01F23/268—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 mounting arrangements of probes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
795,189. Electric tests. SIMMONDS AEROCESSORIES, Ltd. Sept. 5, 1955 [Sept. 6, 1954], No. 25853/54. Class 37. A liquid contents gauge capacitor comprises a support of dielectric sheet material and a plurality of thin narrow ribbons of conducting material pro viding the plates of the capacitor. The ribbons run all in the same direction and are secured to the support along their length. The thickness of each ribbon is of the order of a few thousandth of an inch or less. In Fig. 1, thin narrow conductive ribbons 5 run the length of an insulating strip 2 bonded to an insulating strip 3. The ribbons 5 are connected to a coaxial cable connector 6 and tabs 4 on strip 3 secure the assembly on to a wall of a flexible fuel tank for an aircraft. Screening wire may be wound around the strip, Figs. 2 and 3 (not shown), or strip 2 may be threaded into a metal cage comprising transverse strips alternately above and below strip 2, Fig. 4 (not shown). Fig. 5 shows a capacitor strip 20 (e.g. as in Fig. 1), wound around a flexible insulating tube 21 which surrounds a second tube 22. After assembly in a fuel tank a setting resin may be introduced between the tubes 21, 22 to rigidify the assembly. In a modification of Fig. 5 the capacitor strip 20 is wound on the inside surface of the inner tube 22, Fig. 6 (not shown). A further example, Fig. 7, utilizes a capacitor strip 31 mounted taut within a metal screening tube 32 by spacer clips 33. The top of the tube 32 carries a cap moulding 34 with a coaxial cable connector 35. In Fig. 8 a capacitor strip 40 is wound on the outside of a paper-base tube 41 having longitudinal spring ribs 42 which space the strip 40 slightly from the tube 41. In an alternative form of this unit the capacitor strip 40 is wound inside a paper-base tube. The embodiment illustrated in Fig. 9 comprises a capacitor strip 50 wrapped about a paper base tube 51 so that the conductive ribbons 52 run parallel to the tube axis. A collector ring 54 is provided at the upper end of the tube 51. The capacitor strip could alternatively be wrapped within the tube. A second tube may be arranged within tube 51 and the assembly rigidified by a setting resin. The relation between capacitance and volume may be made linear by varying the pitch in the case of wound units (e.g. as in Fig. 8) or by varying the width of the capacitor strip (e.g. as shown in Fig. 9).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2585354A GB795189A (en) | 1954-09-06 | 1954-09-06 | Improvements relating to capacitors for use in liquid level gauges |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2585354A GB795189A (en) | 1954-09-06 | 1954-09-06 | Improvements relating to capacitors for use in liquid level gauges |
Publications (1)
Publication Number | Publication Date |
---|---|
GB795189A true GB795189A (en) | 1958-05-21 |
Family
ID=10234394
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2585354A Expired GB795189A (en) | 1954-09-06 | 1954-09-06 | Improvements relating to capacitors for use in liquid level gauges |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB795189A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3377861A (en) * | 1965-05-06 | 1968-04-16 | Simmonds Precision Products | Electronic liquid measuring system |
EP1808678A1 (en) * | 2006-01-17 | 2007-07-18 | Wacker Corporation | Capacitance-based fluid level sensor |
WO2015022652A1 (en) * | 2013-08-16 | 2015-02-19 | Watgrid, Lda. | Invasive level probe |
GB2570323A (en) * | 2018-01-19 | 2019-07-24 | Paul Clarkson Melvin | Improved performance fluid level sensor |
-
1954
- 1954-09-06 GB GB2585354A patent/GB795189A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3377861A (en) * | 1965-05-06 | 1968-04-16 | Simmonds Precision Products | Electronic liquid measuring system |
EP1808678A1 (en) * | 2006-01-17 | 2007-07-18 | Wacker Corporation | Capacitance-based fluid level sensor |
US7475665B2 (en) | 2006-01-17 | 2009-01-13 | Wacker Neuson Corporation | Capacitance-based fluid level sensor |
WO2015022652A1 (en) * | 2013-08-16 | 2015-02-19 | Watgrid, Lda. | Invasive level probe |
GB2570323A (en) * | 2018-01-19 | 2019-07-24 | Paul Clarkson Melvin | Improved performance fluid level sensor |
GB2570323B (en) * | 2018-01-19 | 2020-08-12 | Paul Clarkson Melvin | Permittivity based fluid level sensor wherein build-up of fluid vapour droplets is prevented |
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