GB772046A - Apparatus for determining interfaces in liquid bodies - Google Patents
Apparatus for determining interfaces in liquid bodiesInfo
- Publication number
- GB772046A GB772046A GB1692853A GB1692853A GB772046A GB 772046 A GB772046 A GB 772046A GB 1692853 A GB1692853 A GB 1692853A GB 1692853 A GB1692853 A GB 1692853A GB 772046 A GB772046 A GB 772046A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arm
- balance
- indicating
- bridge
- upset
- 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
- 239000007788 liquid Substances 0.000 title abstract 3
- 239000002244 precipitate Substances 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000006228 supernatant Substances 0.000 abstract 1
- 230000000007 visual effect Effects 0.000 abstract 1
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
- G01F23/246—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 thermal devices
- G01F23/247—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 thermal devices for discrete levels
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Paper (AREA)
Abstract
772,046. Indicating liquid levels. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Sept. 20, 1954 [June 18, 1953], No. 16928/53. Class 123 (1). Apparatus for indicating an interface between two liquids of different thermal con ductivity, for example a flocculated precipitate g and a supernatant liquor contained in a vessel f, comprises a cylindrical casing d from which extend spaced radial arms a, b, locating resistance thermometers connected as arms of a Wheatstone bridge e, and a third arm c which locates a heating element and is disposed adjacent the arm a. With the apparatus suspended in the liquor and the bridge circuit balanced, should the level of the precipitate g rise the heat transfer from the arm c to the arm a will change and upset the balance of the said circuit, and the out-of-balance current may be adapted to actuate a relay connected to a visual or other signal or to operate a valve, &c. for modifying liquor flow into or out of the vessel f. Alternatively, with the bridge balanced as above, the apparatus may be moved slowly downwards until the balance is upset, indicating that the arm c has reached the interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1692853A GB772046A (en) | 1953-06-18 | 1953-06-18 | Apparatus for determining interfaces in liquid bodies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1692853A GB772046A (en) | 1953-06-18 | 1953-06-18 | Apparatus for determining interfaces in liquid bodies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB772046A true GB772046A (en) | 1957-04-10 |
Family
ID=10086185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1692853A Expired GB772046A (en) | 1953-06-18 | 1953-06-18 | Apparatus for determining interfaces in liquid bodies |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB772046A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3118136A (en) * | 1958-02-03 | 1964-01-14 | Westinghouse Electric Corp | Liquid level indicator |
| US3181557A (en) * | 1962-11-02 | 1965-05-04 | Jr James E Lannan | Liquid interface sensor |
| US4486743A (en) * | 1982-03-05 | 1984-12-04 | Honeywell Inc. | Creosote buildup detector and annunciator |
| GB2168153A (en) * | 1984-12-06 | 1986-06-11 | Hopkinsons Ltd | Liquid level control and indication |
| GB2168154A (en) * | 1984-12-06 | 1986-06-11 | David Gunn | Liquid level control and indication |
| GB2187288A (en) * | 1986-03-03 | 1987-09-03 | Adwel Ltd | Liquid level indicating apparatus |
| EP0510663A1 (en) * | 1991-04-25 | 1992-10-28 | Trilog Entwicklungsgesellschaft für Mehrwegsysteme GmbH | Device for detecting a liquid or a gas |
-
1953
- 1953-06-18 GB GB1692853A patent/GB772046A/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3118136A (en) * | 1958-02-03 | 1964-01-14 | Westinghouse Electric Corp | Liquid level indicator |
| US3181557A (en) * | 1962-11-02 | 1965-05-04 | Jr James E Lannan | Liquid interface sensor |
| US4486743A (en) * | 1982-03-05 | 1984-12-04 | Honeywell Inc. | Creosote buildup detector and annunciator |
| GB2168153A (en) * | 1984-12-06 | 1986-06-11 | Hopkinsons Ltd | Liquid level control and indication |
| GB2168154A (en) * | 1984-12-06 | 1986-06-11 | David Gunn | Liquid level control and indication |
| GB2187288A (en) * | 1986-03-03 | 1987-09-03 | Adwel Ltd | Liquid level indicating apparatus |
| US4774838A (en) * | 1986-03-03 | 1988-10-04 | Adwel Industries Limited | Liquid level indicating apparatus |
| EP0510663A1 (en) * | 1991-04-25 | 1992-10-28 | Trilog Entwicklungsgesellschaft für Mehrwegsysteme GmbH | Device for detecting a liquid or a gas |
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