GB1414308A - Liquid level control - Google Patents
Liquid level controlInfo
- Publication number
- GB1414308A GB1414308A GB1403172A GB1403172A GB1414308A GB 1414308 A GB1414308 A GB 1414308A GB 1403172 A GB1403172 A GB 1403172A GB 1403172 A GB1403172 A GB 1403172A GB 1414308 A GB1414308 A GB 1414308A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquid level
- level control
- coil
- division
- oscillator
- 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
- G01F23/30—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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
- G05D9/12—Level control, e.g. controlling quantity of material stored in vessel characterised by the use of electric means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Level Indicators Using A Float (AREA)
Abstract
1414308 Liquid level measuring PLESSEY CO Ltd 2 Feb 1973 [24 March 1972] 14031/72 Heading G1N [Also in Division G3] In a liquid level controlling apparatus (see Division G3), the liquid level is measured using a hollow float having a ferrite slug mounted thereon, and a coil which is arranged in an oscillator whose frequency is determined by the position of the slug relative to the coil. The oscillator output is applied to a Schmitt trigger whose output is applied to a pump circuit which provides a D.C. voltage representative of liquid level.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1403172A GB1414308A (en) | 1972-03-24 | 1972-03-24 | Liquid level control |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1403172A GB1414308A (en) | 1972-03-24 | 1972-03-24 | Liquid level control |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1414308A true GB1414308A (en) | 1975-11-19 |
Family
ID=10033744
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1403172A Expired GB1414308A (en) | 1972-03-24 | 1972-03-24 | Liquid level control |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1414308A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0409349A1 (en) * | 1989-07-19 | 1991-01-23 | Sara Lee/De N.V. | Apparatus for controlling the level in a beverage dispensing system |
WO1993016425A1 (en) * | 1992-02-17 | 1993-08-19 | Deuta-Werke Vorm. Deutsche Tachometerwerke Gmbh | Method and device for monitoring the oil level in the oil sump of for instance an internal-combustion engine, in particular a ship's diesel |
DE10262062B4 (en) * | 2002-04-30 | 2008-11-06 | Bayerische Motoren Werke Aktiengesellschaft | oil tank |
EP2508853A1 (en) * | 2011-04-05 | 2012-10-10 | Hitachi Ltd. | Fluid level measurement instrument by using solenoid coil |
WO2021164956A1 (en) * | 2020-02-21 | 2021-08-26 | Hydac Process Technology Gmbh | Device for processing fluid mixtures |
CN115295377A (en) * | 2022-09-26 | 2022-11-04 | 西南应用磁学研究所(中国电子科技集团公司第九研究所) | Permanent magnet focusing system of microwave device |
-
1972
- 1972-03-24 GB GB1403172A patent/GB1414308A/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0409349A1 (en) * | 1989-07-19 | 1991-01-23 | Sara Lee/De N.V. | Apparatus for controlling the level in a beverage dispensing system |
WO1993016425A1 (en) * | 1992-02-17 | 1993-08-19 | Deuta-Werke Vorm. Deutsche Tachometerwerke Gmbh | Method and device for monitoring the oil level in the oil sump of for instance an internal-combustion engine, in particular a ship's diesel |
DE10262062B4 (en) * | 2002-04-30 | 2008-11-06 | Bayerische Motoren Werke Aktiengesellschaft | oil tank |
EP2508853A1 (en) * | 2011-04-05 | 2012-10-10 | Hitachi Ltd. | Fluid level measurement instrument by using solenoid coil |
WO2021164956A1 (en) * | 2020-02-21 | 2021-08-26 | Hydac Process Technology Gmbh | Device for processing fluid mixtures |
CN115295377A (en) * | 2022-09-26 | 2022-11-04 | 西南应用磁学研究所(中国电子科技集团公司第九研究所) | Permanent magnet focusing system of microwave device |
CN115295377B (en) * | 2022-09-26 | 2023-01-13 | 西南应用磁学研究所(中国电子科技集团公司第九研究所) | Permanent magnet focusing system of microwave device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
HK23179A (en) | An oscillating vane pump for liquids | |
DE3175141D1 (en) | Improved clinometer | |
GB1414308A (en) | Liquid level control | |
GB1417681A (en) | Method of analogue measurement of a capacitance and apparatus therefor | |
FR2324043B1 (en) | ||
ES484335A1 (en) | Inductive type displacement transducers | |
GB1152429A (en) | Improvements in or relating to magnet-controlled liquid level indicators | |
IT960559B (en) | VOLTAGE CONTROL SAW-TOOTH OSCILLATOR WITH FREQUENCY INDEPENDENT RETURN TIME | |
BE759264A (en) | BODY RESONANCE FREQUENCY CONTROL DEVICE | |
GB1155443A (en) | Flow Control Apparatus | |
GB1483796A (en) | Clamp circuits | |
GB1474800A (en) | Turbine type flowmeter | |
GB1341274A (en) | Device for sensing the level in ink ducts of printing presses | |
JPS5214466A (en) | Current measuring device | |
JPS5539799B2 (en) | ||
FR2287681A1 (en) | Digital magnetic compass - produces digital measurement of azimuth of given direction with respect to earths magnetic field | |
JPS51142252A (en) | Exciter circuit | |
JPS5358788A (en) | Injection type laser device | |
JPS5358786A (en) | Injection type laser device | |
DE1906794B2 (en) | Measurement of displacement or volume - change in a sample in the core of a nuclear | |
JPS5237061A (en) | Oscillation type division count apparatus of scale division interval | |
FR2442467B1 (en) | ||
GB1402546A (en) | Adjustable frequency oscillator | |
JPS5211892A (en) | Electromagnetic wave distance measuring system | |
JPS5255675A (en) | Direction identification doppler detecting apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |