GB694737A - Improved method of and apparatus for measuring and controlling a liquid level - Google Patents
Improved method of and apparatus for measuring and controlling a liquid levelInfo
- Publication number
- GB694737A GB694737A GB23770/50A GB2377050A GB694737A GB 694737 A GB694737 A GB 694737A GB 23770/50 A GB23770/50 A GB 23770/50A GB 2377050 A GB2377050 A GB 2377050A GB 694737 A GB694737 A GB 694737A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquid
- measuring
- contact
- liquid level
- circuit
- 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
- G01F23/24—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 resistance of resistors due to contact with conductor fluid
- G01F23/241—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 resistance of resistors due to contact with conductor fluid for discrete levels
Abstract
694,737. Measuring liquid levels. ELECTRICITE DE FRANCE. Sept. 28, 1950 [Sept. 29, 1949], No. 23770/50. Class 40 (i) [Also in Group XXXV] A device for measuring or indicating the level of a conducting liquid comprises an electric measuring circuit which includes a vertically oscillating contact which is so disposed that during part of its oscillatory cycle it penetrates the liquid surface and completes the electric circuit. The invention is also applicable to the automatic control of a liquid level (see Group XXXV). In Fig.l, the oscillating contact comprises a needle 11 connected to a loudspeaker 12 energized from the electric mains 18. The needle is so positioned that it penetrates the surface of the liquid for part of the oscillatory cycle; the mean current indicated by meter 15 is consequently a measure of the height of the liquid level. In a further embodiment, Fig. 6, for indicating the difference between two liquid levels, two vertically oscillating contacts are used, one 63 being maintained in a predetermined position with respect to the liquid surface in tube 62 by retroactive control involving amplifier 64 and motor 65, and the other 66 being connected to motor 65 so as always to be at the same height as the contact 63. The contact 66 co-operates with the liquid surface in tube 61, so that the mean current flowing in the circuit as indicated by meter 67 is a measure of the difference between the two liquid levels.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR694737X | 1949-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB694737A true GB694737A (en) | 1953-07-29 |
Family
ID=9045642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23770/50A Expired GB694737A (en) | 1949-09-29 | 1950-09-28 | Improved method of and apparatus for measuring and controlling a liquid level |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB694737A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3169400A (en) * | 1962-11-02 | 1965-02-16 | Kiramidjian Ludwig | Liquid level recording apparatus |
| CN108414048A (en) * | 2018-03-16 | 2018-08-17 | 中国石油大学(华东) | Standard capacity measure liquid level metering device and system |
-
1950
- 1950-09-28 GB GB23770/50A patent/GB694737A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3169400A (en) * | 1962-11-02 | 1965-02-16 | Kiramidjian Ludwig | Liquid level recording apparatus |
| CN108414048A (en) * | 2018-03-16 | 2018-08-17 | 中国石油大学(华东) | Standard capacity measure liquid level metering device and system |
| CN108414048B (en) * | 2018-03-16 | 2024-01-30 | 中国石油大学(华东) | Liquid level metering device and system of standard metal gauge |
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