CN2212779Y - Liquid level sensor - Google Patents
Liquid level sensor Download PDFInfo
- Publication number
- CN2212779Y CN2212779Y CN 94246599 CN94246599U CN2212779Y CN 2212779 Y CN2212779 Y CN 2212779Y CN 94246599 CN94246599 CN 94246599 CN 94246599 U CN94246599 U CN 94246599U CN 2212779 Y CN2212779 Y CN 2212779Y
- Authority
- CN
- China
- Prior art keywords
- liquid level
- level sensor
- external electrode
- electrode
- internal
- 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 - Fee Related
Links
Images
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model relates to a liquid level sensor. An inner electrode (12) and an outer electrode (10) are metal pipes, wherein insulating materials (11) are cast on the outer side of the inner electrode, and thus, the inner electrode is completely insulative to the outer electrode. The liquid level sensor has the advantages of conductive or nonconductive liquid measurement, high measurement precision and no need of site debugging. The liquid level sensor matched with a measuring instrument can be widely used for measuring the conductive or the nonconductive liquid.
Description
The utility model belongs to the level gauging element.
Existing capacitance level transducer can be divided into measures conducting liquid and two kinds of the liquid level sensors of measuring non-electrically conductive liquid.The liquid level sensor of measuring conducting liquid is a stagged electrode structure, when measuring conducting liquid, must introduce an auxiliary electrode, is difficult for debugging; And the liquid level sensor of measurement non-electrically conductive liquid, two electrodes are bare electrode, when sneaking into micro-conducting liquid in the non-electrically conductive liquid, measuring error is very big, and as homemade UYB-24 type electric capacity fluid level transmitter, its weak point is that Installation and Debugging are loaded down with trivial details, medium is required height, function singleness.
A kind of measuring accuracy height is provided, can be used for conducting liquid and non-electrically conductive liquid simultaneously, measuring liquid level sensor that again needn't field adjustable is a purpose of this utility model.
Characteristics of the present utility model are that interior electrode (12) is a metal tube, mould insulating material (11) outward to link to each other with nonmetallic materials (5) as insulation course; External electrode (10) is a metal tube, links to each other with metal material connecting thread (3), and internal and external electrode is a concentric shafts cylindrical capacitor, between fully the insulation.
On the tube wall of external electrode (10), be milled with the groove of diameter, so that fluid exchange greater than 4mm.
Fixing with triangle thimble (7) between internal and external electrode, make impurity be difficult for precipitation (or absorption) on it.
The length of its internal and external electrode can be according to the liquid level depth, and is changeable.
Structure of the present utility model is described in conjunction with the embodiments:
Accompanying drawing is the liquid level sensor structural drawing.Wherein 1, measuring box; 2, the lead-in wire screw; 3, screw thread; 4, sealing gasket; 5, connector; 6, sealing gasket; 7, thimble; 8, nut; 9, sealing gasket; 10, external electrode; 11, insulation course; 12, interior electrode.
Interior electrode (12) is a metal circular tube, cylindrical is moulded casting teflon or Polyvinylchloride encapsulant (11), link to each other with connector (5) in the nonmetallic materials by screw thread again, and it is fastening interior electrode with chucking nut (8) and polytetrafluoroethylmaterial material sealing gasket (9), stainless steel sleeve pipe external electrode (10) is tightened on the metal material connecting thread (3), and by polytetrafluoroethylene sealing gasket (4) and sealing gasket and sealing gasket (6) and in connector make in electrode fix.On the electrode, lead-in wire entered measuring box (1) in lead-in wire screw (2) was tightened in, and nonmetallic materials triangle thimble (7) is fixed the internal and external electrode spacing, interior electrode metal pipe slightly is shorter than external electrode, and at ferrule, internal and external electrode constitutes a concentric cylinder type capacitor, and spacing is at least greater than 5mm.
The very naked stainless steel sleeve pipe of dispatch from foreign news agency has two above grooves, and the groove diameter is at least greater than 4mm.
When measuring conducting liquid, sensor two electrodes itself constitute an electric capacity, and sensor initial capacitance value is certain, and the mounting points of Ce Lianging can arbitrarily be selected like this; When measuring the conductive liquid level of non-metallic material container, also need not introduce auxiliary electrode, because bipolar electrode capacitive transducer initial value is certain, therefore, after sensor connects supporting indicating instrument (1), just can carry out zero-bit and range adjustment, needn't be added to 100% to liquid level from zero at the scene and adjust, save the field adjustable workload in testing laboratory.When measuring non-electrically conductive liquid, even sneak into the conducting liquid of trace, because internal and external electrode insulate, measuring accuracy can not be subjected to influence greatly, accurately and reliably.Owing to be milled with several roads groove on the external electrode, and do not add the spacing collets between internal and external electrode, the inside and outside Medium Exchange of electrode is even, and flowing liquid washes away electrode, and impurity is difficult for being adsorbed on the electrode, and measuring accuracy improves.
Both the utility model has the advantages that and to measure conductive liquid level, can measure non-conductive liquid level again; The certainty of measurement height, and save the field adjustable workload.
The utility model cooperates with measuring instrument, can be widely used in to measure conduction or non-electrically conductive liquid liquid level.
Claims (4)
1, a kind of liquid level sensor of being made up of internal and external electrode is characterized in that: interior electrode (12) is a metal tube, moulds insulating material (11) outward, links to each other with nonmetallic materials (5); External electrode (10) is a metal tube, links to each other with metal material connecting thread (3), and internal and external electrode is a concentric cylinder type capacitor, between fully the insulation.
2, liquid level sensor according to claim 1 is characterized in that being milled with on the external electrode tube wall groove of diameter greater than 4mm.
3, liquid level sensor according to claim 1 and 2 is characterized in that between internal and external electrode fixing with triangle thimble (7).
4, liquid level sensor according to claim 1 and 2, the length that it is characterized in that internal and external electrode can be shown needs and decide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94246599 CN2212779Y (en) | 1994-12-09 | 1994-12-09 | Liquid level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94246599 CN2212779Y (en) | 1994-12-09 | 1994-12-09 | Liquid level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2212779Y true CN2212779Y (en) | 1995-11-15 |
Family
ID=33852044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94246599 Expired - Fee Related CN2212779Y (en) | 1994-12-09 | 1994-12-09 | Liquid level sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2212779Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101625250B (en) * | 2009-07-27 | 2011-01-05 | 北京鹤华安吉电子技术研究所 | Liquid level detector |
| CN101551264B (en) * | 2009-04-28 | 2011-01-05 | 哈尔滨威帝电子股份有限公司 | Capacitance electronic type fuel sensor |
| CN101424884B (en) * | 2005-06-29 | 2011-06-01 | Asml荷兰有限公司 | Lithographic apparatus immersion damage control |
| CN104280583A (en) * | 2013-07-05 | 2015-01-14 | 中国石油天然气股份有限公司 | Method for manufacturing electrodes with small electrode constants |
-
1994
- 1994-12-09 CN CN 94246599 patent/CN2212779Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101424884B (en) * | 2005-06-29 | 2011-06-01 | Asml荷兰有限公司 | Lithographic apparatus immersion damage control |
| CN101551264B (en) * | 2009-04-28 | 2011-01-05 | 哈尔滨威帝电子股份有限公司 | Capacitance electronic type fuel sensor |
| CN101625250B (en) * | 2009-07-27 | 2011-01-05 | 北京鹤华安吉电子技术研究所 | Liquid level detector |
| CN104280583A (en) * | 2013-07-05 | 2015-01-14 | 中国石油天然气股份有限公司 | Method for manufacturing electrodes with small electrode constants |
| CN104280583B (en) * | 2013-07-05 | 2016-12-28 | 中国石油天然气股份有限公司 | A kind of manufacture method of small electrode constant electrode |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203148514U (en) | Capacitive self-adaptation liquid level sensor | |
| CN102980630B (en) | A kind of intelligent digital capacitive liquid level sensor | |
| CN2212779Y (en) | Liquid level sensor | |
| CN204188237U (en) | Hall liquid level pick-up unit | |
| CN106066349A (en) | A kind of moisture computational methods of capacitance-type sensor for moisture content assembly | |
| CN206038103U (en) | Electric capacity level sensor | |
| CN103913207A (en) | High-precision variable-scan oil level measurement sensor with matrix capacitor | |
| CN104568073A (en) | Hall liquid level detection device | |
| CN214333911U (en) | High-precision electromagnetic flowmeter | |
| CN112415353B (en) | Electrode device and method suitable for optical fiber voltage resistance performance test | |
| CN102928050A (en) | Multi-section admittance liquid level interfacial measuring instrument without unmeasurable area | |
| CN106596882A (en) | PH meter for water quality detection | |
| CN106768169A (en) | A kind of liquid level emasuring device, the method for high-temperature electric conduction liquid | |
| CN201984053U (en) | Novel raw oil water content detecting sensor | |
| CN201724921U (en) | Water-in-oil Detection device | |
| CN2293804Y (en) | Capacity continuous detection level meter | |
| CN2515667Y (en) | All digital domestic cold/heat quantity meter | |
| CN2844854Y (en) | Water temperature and level sensor | |
| CN219104077U (en) | Micro-caliber electromagnetic flow sensor measuring tube made of PEEK engineering plastic | |
| CN106645214A (en) | Integrated multipoint radio frequency short wave sensor for detecting water content of crude oil | |
| CN220120755U (en) | Short-size graphite conductive electrode with mounting threads | |
| CN215676785U (en) | Injection molding part metal insert mounting height measuring tool | |
| CN207263260U (en) | A kind of magnetostriction liquidometer | |
| CN220774848U (en) | High-precision sensing electrode | |
| CN220136450U (en) | Detachable oil sensor electrode |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |