GB499219A - Improved electro-magnetic device for liquid level regulation - Google Patents
Improved electro-magnetic device for liquid level regulationInfo
- Publication number
- GB499219A GB499219A GB2049037A GB2049037A GB499219A GB 499219 A GB499219 A GB 499219A GB 2049037 A GB2049037 A GB 2049037A GB 2049037 A GB2049037 A GB 2049037A GB 499219 A GB499219 A GB 499219A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquid level
- tube
- coil
- float
- pressure
- 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
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
- G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
- G01F1/37—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction the pressure or differential pressure being measured by means of communicating tubes or reservoirs with movable fluid levels, e.g. by U-tubes
- G01F1/372—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction the pressure or differential pressure being measured by means of communicating tubes or reservoirs with movable fluid levels, e.g. by U-tubes with electrical or electro-mechanical indication
-
- 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
- G01F23/30—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 floats
- G01F23/64—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 floats of the free float type without mechanical transmission elements
- G01F23/72—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 floats of the free float type without mechanical transmission elements using magnetically actuated indicating means
- G01F23/74—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 floats of the free float type without mechanical transmission elements using magnetically actuated indicating means for sensing changes in level only at discrete points
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Level Indicators Using A Float (AREA)
Abstract
499,219. Automatic control systems. STERN, W. July 24, 1937, No. 20490. [Class 38 (iv)] Fluid pressure; fluid flow.-A float 1 formed wholly or partially of ferromagnetic material is arranged to float on the surface of a liquid in a tube 2, a coil 8 arranged to surround the tube 2 having a condenser 10 arranged in series or parallel therewith so that at a predetermined position of the liquid level in 2 carrying the core 1 resonance takes place and the variation of the current produced thereby causes relay coil 15 to effect operation of means for controlling the liquid level. The means may comprise a contact member 18 released by the coil 15 when resonance occurs to open the circuit of a motor 6 driving a pump supplying pressure oil to the container 5 of a hydraulic press to which the tube 2 is connected. The indicating instrument 14 gives an indication of the liquid level and may be arranged to make and break the circuits of signalling devices or may be used instead of the relay coil 15. The part of the tube 2 adjacent to the coil 8 is made of non- magnetic material. One or more additional coils 8<1> may be arranged on the tube 2 and may be associated with the instrument 14 and with the relay 15 or may be connected with different instruments and with further relays for controlling the liquid level regulating means. The Specification describes arrangements in which the liquid level is respectively arranged to be dependent on the pressure in a cylinder, the pressure relationship between two containers, and the rate of flow of a fluid in a pipe line which are controlled by the means energized on the occurrence of resonance produced when the ferromagnetic float passes into the coil or one of the coils surrounding the tube in which it floats.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2049037A GB499219A (en) | 1937-07-24 | 1937-07-24 | Improved electro-magnetic device for liquid level regulation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2049037A GB499219A (en) | 1937-07-24 | 1937-07-24 | Improved electro-magnetic device for liquid level regulation |
Publications (1)
Publication Number | Publication Date |
---|---|
GB499219A true GB499219A (en) | 1939-01-20 |
Family
ID=10146745
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2049037A Expired GB499219A (en) | 1937-07-24 | 1937-07-24 | Improved electro-magnetic device for liquid level regulation |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB499219A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2433599A (en) * | 1942-12-31 | 1947-12-30 | Wheelco Instr Company | Control apparatus |
US2472389A (en) * | 1943-09-17 | 1949-06-07 | Wurlitzer Co | Float control for liquid dispensing devices |
DE968497C (en) * | 1949-05-04 | 1958-02-27 | Gen Electric | Temperature-dependent monitoring device |
DE2936890A1 (en) * | 1978-09-15 | 1980-03-27 | Matsushita Electric Works Ltd | TEMPERATURE CONTROL FOR ELECTRIC SURFACE HEATING |
-
1937
- 1937-07-24 GB GB2049037A patent/GB499219A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2433599A (en) * | 1942-12-31 | 1947-12-30 | Wheelco Instr Company | Control apparatus |
US2472389A (en) * | 1943-09-17 | 1949-06-07 | Wurlitzer Co | Float control for liquid dispensing devices |
DE968497C (en) * | 1949-05-04 | 1958-02-27 | Gen Electric | Temperature-dependent monitoring device |
DE2936890A1 (en) * | 1978-09-15 | 1980-03-27 | Matsushita Electric Works Ltd | TEMPERATURE CONTROL FOR ELECTRIC SURFACE HEATING |
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