CN2212775Y - Bar-type liquid level and liquid temp transducer - Google Patents
Bar-type liquid level and liquid temp transducer Download PDFInfo
- Publication number
- CN2212775Y CN2212775Y CN 94235554 CN94235554U CN2212775Y CN 2212775 Y CN2212775 Y CN 2212775Y CN 94235554 CN94235554 CN 94235554 CN 94235554 U CN94235554 U CN 94235554U CN 2212775 Y CN2212775 Y CN 2212775Y
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- CN
- China
- Prior art keywords
- liquid level
- liquid
- level
- bar
- temperature
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- Expired - Fee Related
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model relates to a bar-typed liquid level and liquid temp transducer which belongs to the transducer used for measuring depth and temperature of conducting liquid, wherein, a multi-stage electrode for measuring liquid level is arranged on one testing stick, meanwhile, a temperature measuring element are arranged in the stick, which are connected with the transducing members on the top of the testing stick via conducting wires. With each level of electrode submerged by the liquid, a signal of liquid level is conversed by the transducing members into an electrical signal, and the temperature and the liquid level signal are transmitted to a display instrument via terminal. The utility model adopts two-wire system to transmit the multi-stage liquid level signal, meanwhile, the temperature is detectable. The utility model has the advantages of antijam and long distance transmission, and convenient for mounting.
Description
The utility model belongs to the transmitter of measuring liquid level and liquid temperature.
Known electrode-type liquid-level meter not tool becomes current signal with the multi-stage liquid level conversion of signals, needs multi-thread connection.The electrode mounting structure complexity, price is expensive.And can not while location thermometric.
The purpose of this invention is to provide a kind of simple in structurely, easy for installation, can carry out thermometric, location to conducting liquid simultaneously.And can convert measuring-signal to transmitter that electric signal is realized teletransmission.
The bar type liquid level that the utility model relates to, liquid temperature transmitter adopt following structure to realize: known that by Fig. 1 multistage tubulose level electrode (2) is concatenated into test bar by insulation tube (1) isolation.Be provided with driving source electrode (7) in the lower end of rod, the top of rod is provided with protection box (9), is equipped with in the protection box to become to send parts (4) and connection terminal (5).Each electrode is by sending parts to connect by the lead in the rod with change.According to the thermometric requirement, temperature element (3) is placed on respective depth in the rod, and the temperature transition of this point is become electric signal.Liquid level signal after the conversion and temperature signal all connect with signal transmssion line (8) by connection terminal (5) realizes teletransmission.Be provided with securing member (6) on the top of test bar, so that be fixed on the low pressure vessel of contain fluid.
Know that by Fig. 2 level electrode connects the input end (Ii) of conversion circuit respectively, the driving source electrode connects power end (V+).The every submergence one-level of fluid to be measured level electrode, triode (DK) conducting that connects with this electrode, power supply (V+) (generally gets 1～5mA) by the electric current that resistance (R) makes output terminal (I0) increase the V+/R milliampere approximately.Otherwise then triode (DK) ends, and output terminal (I0) reduces the electric current of V+/R milliampere approximately.Finish the conversion of liquid level signal thus.
Insulation tube of the present utility model (1) can adopt flexible pipe, forms flexible test bar.
Know that by Fig. 3 it is by circuit board (41) that parts (4) are sent in change, embedding box (42), casting glue (43) is formed.Electronic component is equipped with in circuit board (41) bottom, is placed in the embedding box (42), with casting glue (43) sealing and fixing.Connection terminal (5) is equipped with on circuit board top.
The utility model is to adopt 2 line systems transmission multi-stage liquid level signal, but the while detected temperatures, antijamming capability is strong, and long distance of signal transmission can be carried out remote observing and controlling.The employing plug-in type is installed, and is easy to use.
When the utility model was used to detect in the solar water heater header tank water-level and water-temperature, insulation tube (1) adopted silicone tube, and level electrode (2) adopts nickel plated copper pipe, and driving source electrode (7) adopts stainless steel to carry out processing and fabricating.Insulation tube and each electrode are bonding with room curing silicon rubber, the flexible test bar that composition can work long hours in 100 ℃ water.Temperature element (3) adopts current mode semiconductor thermometric device, as AD590.The power supply of water level change-over circuit (V+) adopts the 6V direct supply.The about 1.2mA of current signal that every submergence one-level level electrode is produced.Triode (DK) is selected switching mode or high β value for use.Become and send parts (4) to adopt the integral sealing structure, to strengthen its weatherability.Aluminium is adopted in the long-term open air of placing of protection box (9), and the surface is done corrosion protection and handled.
Description of drawings: accompanying drawing 1 is a bar type liquid level liquid temperature structure of transmitter synoptic diagram
1, insulation tube 2, level electrode 3, temperature element
4, parts 5, connection terminal 6, securing member are sent in change
7, driving source electrode 8, signal transmssion line 9, protection box
Accompanying drawing 2 is a liquid level signal transfer principle block diagram
V+: power end (safe voltage) Ii: change-over circuit input end
I0: change-over circuit output terminal R: resistance
DK: triode
Accompanying drawing 3 send modular construction figure for becoming
41, circuit board 42, embedding box
42, casting glue 5, connection terminal
Claims (3)
1, bar type liquid level liquid temperature transmitter, it is characterized in that on test bar, being provided with at least two sections insulation tubes (1), one-level level electrode (2) and driving source electrode (7), be provided with temperature element (3) in the rod, be provided with protection box (9) at the test bar top, be provided with the change that the multi-stage liquid level conversion of signals can be become current signal in the protection box and send parts (4) and connection terminal (5), test bar top is provided with securing member (6).
2, bar type liquid level liquid temperature transmitter according to claim 1 is characterized in that said insulation tube (1) can adopt flexible pipe, forms flexible test bar.
3, bar type liquid level liquid temperature transmitter according to claim 1, it is characterized in that said change send parts (4) by wiring board (41), electronic component is equipped with in embedding box (42) and casting glue (43) built-up circuit plate (41) bottom, be placed in the embedding box (42), with casting glue (43) sealing and fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94235554 CN2212775Y (en) | 1994-10-19 | 1994-10-19 | Bar-type liquid level and liquid temp transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94235554 CN2212775Y (en) | 1994-10-19 | 1994-10-19 | Bar-type liquid level and liquid temp transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2212775Y true CN2212775Y (en) | 1995-11-15 |
Family
ID=33843787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94235554 Expired - Fee Related CN2212775Y (en) | 1994-10-19 | 1994-10-19 | Bar-type liquid level and liquid temp transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2212775Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7421258B2 (en) | 2003-10-10 | 2008-09-02 | Rosemount Inc. | Compact temperature transmitter with improved lead connections |
| CN106996815A (en) * | 2016-07-26 | 2017-08-01 | 东风汽车电子有限公司 | Level sensor |
| CN108309092A (en) * | 2017-01-17 | 2018-07-24 | 佛山市顺德区美的电热电器制造有限公司 | Food cooking machine and concentration detection method for food cooking machine |
| CN108309088A (en) * | 2017-01-17 | 2018-07-24 | 佛山市顺德区美的电热电器制造有限公司 | Food cooking machine and concentration detection method for food cooking machine |
| CN108309089A (en) * | 2017-01-17 | 2018-07-24 | 佛山市顺德区美的电热电器制造有限公司 | Food cooking machine and concentration detection method for food cooking machine |
| CN110160598A (en) * | 2019-07-05 | 2019-08-23 | 上海铸奇环保科技有限公司 | A kind of electrode-type liquid-level meter |
-
1994
- 1994-10-19 CN CN 94235554 patent/CN2212775Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7421258B2 (en) | 2003-10-10 | 2008-09-02 | Rosemount Inc. | Compact temperature transmitter with improved lead connections |
| CN101776491B (en) * | 2003-10-10 | 2011-12-14 | 罗斯蒙德公司 | Compact process transmitter |
| CN106996815A (en) * | 2016-07-26 | 2017-08-01 | 东风汽车电子有限公司 | Level sensor |
| CN106996815B (en) * | 2016-07-26 | 2023-11-28 | 东风汽车电子有限公司 | Water level sensor |
| CN108309092A (en) * | 2017-01-17 | 2018-07-24 | 佛山市顺德区美的电热电器制造有限公司 | Food cooking machine and concentration detection method for food cooking machine |
| CN108309088A (en) * | 2017-01-17 | 2018-07-24 | 佛山市顺德区美的电热电器制造有限公司 | Food cooking machine and concentration detection method for food cooking machine |
| CN108309089A (en) * | 2017-01-17 | 2018-07-24 | 佛山市顺德区美的电热电器制造有限公司 | Food cooking machine and concentration detection method for food cooking machine |
| CN108309092B (en) * | 2017-01-17 | 2020-11-20 | 佛山市顺德区美的电热电器制造有限公司 | Food processor and concentration detection method for food processor |
| CN110160598A (en) * | 2019-07-05 | 2019-08-23 | 上海铸奇环保科技有限公司 | A kind of electrode-type liquid-level meter |
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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 |