GB1077043A - Fluid depth indicator - Google Patents
Fluid depth indicatorInfo
- Publication number
- GB1077043A GB1077043A GB2619964A GB2619964A GB1077043A GB 1077043 A GB1077043 A GB 1077043A GB 2619964 A GB2619964 A GB 2619964A GB 2619964 A GB2619964 A GB 2619964A GB 1077043 A GB1077043 A GB 1077043A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquid
- junctions
- output
- level
- quantizers
- 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
- G01F23/246—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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
1,077,043. Locating the surface of a liquid. TRANS-SONICS Inc. June 24, 1964 [June 26, 1963], No. 26199/64. Heading G4H. Apparatus for locating the surface of a liquid comprises thermo-electric junctions or thermistors arranged at different depths in the liquid so that the net thermo-electric voltage developed alternates between first and second voltages as the level of the liquid rises or descends. In one embodiment (Fig. 1, not shown) the thermoelectric potentials of successive junctions are of opposite polarity so that when none of the junctions are covered by liquid a zero output is obtained, when one of the junctions is covered, the output voltage rises and when two junctions are covered and the output voltage again drops to zero. The junctions are preferably heated since the liquid removes heat from an immersed junction more rapidly than the atmosphere above the liquid removes heat from a non- immersed junction. In the embodiment of Fig. 4 a plurality of stacks of thermo-electric junctions 50, 52, 54, 56 formed from two metals A, B are arranged so that the outputs from the stacks give a Gray code representation of the level of the liquid. The outputs are connected to quantizers 76 which may be for example Schmitt triggers to give a " 1 " output when the input voltage is above a certain level and a " O " output when the voltage falls below this level. The quantizers are also fed with biasing voltages to allow for the variation in heating current fed to the stacks from a transformer 22. The outputs from the quantizers are fed to a Gray's binary to pure binary converter and also to an analogue converter the output of which is indicated by a meter 80.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US29075763A | 1963-06-26 | 1963-06-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1077043A true GB1077043A (en) | 1967-07-26 |
Family
ID=23117427
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2619964A Expired GB1077043A (en) | 1963-06-26 | 1964-06-24 | Fluid depth indicator |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1284111B (en) |
GB (1) | GB1077043A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4521373A (en) * | 1982-08-23 | 1985-06-04 | General Electric Company | Liquid level sensor |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD20088A (en) * | ||||
DE595691C (en) * | 1931-01-10 | 1934-04-16 | Friedrich Nettel Dipl Ing | Device for displaying the liquid level in containers |
DE1800466A1 (en) * | 1967-10-06 | 1969-05-08 | Ohg Edmondo Balsamo S R L | Stopcock with built-in filter |
-
1964
- 1964-06-24 GB GB2619964A patent/GB1077043A/en not_active Expired
- 1964-06-26 DE DE1964T0026458 patent/DE1284111B/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE1284111B (en) | 1968-11-28 |
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