GB1391867A - Liquid level indicating systems - Google Patents
Liquid level indicating systemsInfo
- Publication number
- GB1391867A GB1391867A GB5008873A GB5008873A GB1391867A GB 1391867 A GB1391867 A GB 1391867A GB 5008873 A GB5008873 A GB 5008873A GB 5008873 A GB5008873 A GB 5008873A GB 1391867 A GB1391867 A GB 1391867A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquid level
- transistor
- liquid
- level indicating
- electrode
- 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
- G01F23/241—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 for discrete levels
- G01F23/243—Schematic arrangements of probes combined with measuring circuits
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Amplifiers (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Level Indicators Using A Float (AREA)
Abstract
1391867 Liquid level indication BENDIBERICA SA 26 Oct 1973 [7 Nov 1972] 50088/73 Heading G1H In a liquid level indicating device in which two electrodes E 1 , E 2 are immersed in a liquid the level of which is to be measured the electrode E 2 is directly connected to the gate electrode of a transistor TR 1 and the source electrode of transistor TR 1 is connected to the base of transistor TR2 the collector of which is connected to a negative source - Vi and the arrangement is such that when the liquid is out of contact with electrodes E 1 , E 2 the device will conduct and an indicator, such as a lamp, buzzer or relay, will operate an audible or visual indicating device. A semi-conductor device is also described with a positive voltage source.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES408556A ES408556A1 (en) | 1972-11-07 | 1972-11-07 | Liquid level indicating systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1391867A true GB1391867A (en) | 1975-04-23 |
Family
ID=8462631
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5008873A Expired GB1391867A (en) | 1972-11-07 | 1973-10-26 | Liquid level indicating systems |
Country Status (6)
Country | Link |
---|---|
AU (1) | AU6222273A (en) |
DE (1) | DE2355244A1 (en) |
ES (1) | ES408556A1 (en) |
FR (1) | FR2205663B1 (en) |
GB (1) | GB1391867A (en) |
IT (1) | IT996842B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2246438A (en) * | 1990-07-28 | 1992-01-29 | Fisher Thomas James | A water level warning device |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3136864C2 (en) * | 1981-09-17 | 1984-04-19 | Eaton S.A.M., Monaco | Level indicator |
FR2567267B1 (en) * | 1984-07-05 | 1989-01-13 | Penanguer Jacques | DEVICE FOR REMOTE SIGNALING OF THE PRESENCE OF A CONDUCTIVE LIQUID AT A SPECIFIED POINT |
ES2023310A6 (en) * | 1990-03-22 | 1992-01-01 | Transpar Iberica Sa | Liquid level control device. |
DE102010029307A1 (en) * | 2010-05-26 | 2011-12-01 | BSH Bosch und Siemens Hausgeräte GmbH | Domestic appliance with a container and a level measuring device and corresponding level measurement method |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3465588A (en) * | 1967-09-11 | 1969-09-09 | Bendix Corp | Floatless electrical fluid level gauge |
GB1313497A (en) * | 1969-08-15 | 1973-04-11 | Lucas Industries Ltd | Liquid level detection circuits |
-
1972
- 1972-11-07 ES ES408556A patent/ES408556A1/en not_active Expired
-
1973
- 1973-10-17 IT IT70062/73A patent/IT996842B/en active
- 1973-10-26 GB GB5008873A patent/GB1391867A/en not_active Expired
- 1973-11-05 DE DE19732355244 patent/DE2355244A1/en active Pending
- 1973-11-06 AU AU62222/73A patent/AU6222273A/en not_active Expired
- 1973-11-06 FR FR7339407A patent/FR2205663B1/fr not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2246438A (en) * | 1990-07-28 | 1992-01-29 | Fisher Thomas James | A water level warning device |
Also Published As
Publication number | Publication date |
---|---|
IT996842B (en) | 1975-12-10 |
ES408556A1 (en) | 1975-11-01 |
FR2205663A1 (en) | 1974-05-31 |
DE2355244A1 (en) | 1974-05-16 |
AU6222273A (en) | 1975-05-08 |
FR2205663B1 (en) | 1977-05-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |