GB1129842A - A method of and a circuit arrangement for indicating when an electrically conductive liquid reaches a predetermined level - Google Patents
A method of and a circuit arrangement for indicating when an electrically conductive liquid reaches a predetermined levelInfo
- Publication number
- GB1129842A GB1129842A GB2912266A GB2912266A GB1129842A GB 1129842 A GB1129842 A GB 1129842A GB 2912266 A GB2912266 A GB 2912266A GB 2912266 A GB2912266 A GB 2912266A GB 1129842 A GB1129842 A GB 1129842A
- Authority
- GB
- United Kingdom
- Prior art keywords
- indicating
- liquid reaches
- electrically conductive
- predetermined level
- conductive liquid
- 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
- G01F23/26—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
- G01F23/261—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 for discrete levels
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
1,129,842. Liquid level induction. MULLARD Ltd. Sept.28, 1967 [June 29, 1966], No.29122/66. Heading G1H In a method of indicating when an electrically conductive liquid reaches a predetermined level, an oscillatory circuit 1, connected through a detector circuit 2 to a switching arrangement 3, is shortcircuited when the liquid reaches the pre-determined level thus reducing the impedance of a coil 11 and monitoring the oscillations to detect when such oscillations stop and when the level is reached by the liquid. The oscillations may be monitored by a diode detector circuit which may be connected to a switching arrangement comprising a switching transistor and relay coil or replaced by thyristor or triac triggering device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2912266A GB1129842A (en) | 1966-06-29 | 1966-06-29 | A method of and a circuit arrangement for indicating when an electrically conductive liquid reaches a predetermined level |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2912266A GB1129842A (en) | 1966-06-29 | 1966-06-29 | A method of and a circuit arrangement for indicating when an electrically conductive liquid reaches a predetermined level |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1129842A true GB1129842A (en) | 1968-10-09 |
Family
ID=10286512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2912266A Expired GB1129842A (en) | 1966-06-29 | 1966-06-29 | A method of and a circuit arrangement for indicating when an electrically conductive liquid reaches a predetermined level |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1129842A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2283482A1 (en) * | 1974-07-25 | 1976-03-26 | Mallory & Co Inc P R | LIQUID LEVEL CONTROL DEVICE |
-
1966
- 1966-06-29 GB GB2912266A patent/GB1129842A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2283482A1 (en) * | 1974-07-25 | 1976-03-26 | Mallory & Co Inc P R | LIQUID LEVEL CONTROL DEVICE |
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