CN105043502A - Liquid level detection device, liquid level detection method and dehumidifier - Google Patents
Liquid level detection device, liquid level detection method and dehumidifier Download PDFInfo
- Publication number
- CN105043502A CN105043502A CN201510468366.6A CN201510468366A CN105043502A CN 105043502 A CN105043502 A CN 105043502A CN 201510468366 A CN201510468366 A CN 201510468366A CN 105043502 A CN105043502 A CN 105043502A
- Authority
- CN
- China
- Prior art keywords
- electrode pair
- liquid level
- capacitance
- liquid
- level detection
- 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.)
- Pending
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 126
- 238000001514 detection method Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 230000008859 change Effects 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention discloses a liquid level detection device which comprises a first electrode couple and a second electrode couple disposed outside a container and extended upwards from the bottom part of the container. The liquid level detection device also comprises a capacitance measurement device which is connected to the first electrode couple and the second electrode couple, wherein the capacitance measurement device is used to measure capacitance variation values of the first electrode couple and the second electrode couple, which are generated from liquid level height variation of a liquid in the container. The invention also provides a dehumidifier and a liquid level detection method. The liquid level detection device, the dehumidifier and the liquid level detection method of the execution mode of the invention install the liquid level detection device in a container part to measure a liquid level height, so installation and disassembly become convenient.
Description
Technical field
The present invention relates to Technology of Level Detection, particularly a kind of liquid level detection device, liquid-level detecting method and dehumidifier.
Background technology
Current liquid level detection device mainly utilizes fluid pressure to realize, and therefore, needs the inside being arranged on container, installs and dismounting inconvenience.
Summary of the invention
The present invention is intended at least to solve one of technical matters existed in prior art.For this reason, the present invention needs to provide a kind of liquid level detection device, dehumidifier and liquid-level detecting method.
The liquid level detection device of embodiment of the present invention, it comprises and is arranged on container outer and the first electrode pair upwards extended from the bottom of described container and the second electrode pair, described liquid level detection device also comprises the capacitance measuring device be connected with described first electrode pair and described second electrode pair, the capacitance variations value that described capacitance measuring device produces because the liquid level of the liquid in described container changes for measuring described first electrode pair and described second electrode pair.
In some embodiments, mutually level described second electrode pair is with the relative area of described first electrode pair and apart from identical.
In some embodiments, the aspect ratio of described second electrode pair and described first electrode pair is more than or equal to 100.
In some embodiments, the height of described second electrode pair is equal to or slightly less than the height of described container.
In some embodiments, described liquid level detection device comprises the processor be connected with described capacitance measuring device, described processor for the treatment of described capacitance variations value to obtain described liquid level.
In some embodiments, described liquid level detection device also comprises and described processor alarm set, and described alarm set is used for sending when the capacitance variations value of described first electrode pair is less than predetermined value the prompting that cannot measure.
The dehumidifier of embodiment of the present invention, it comprises:
Water tank, and
If be arranged on water tank outer and the first electrode pair upwards extended from the bottom of described water tank and the second electrode pair, described liquid level detection device also comprises the capacitance measuring device be connected with described first electrode pair and described second electrode pair, the capacitance variations value that described capacitance measuring device produces because the liquid level of the liquid in described water tank changes for measuring described first electrode pair and described second electrode pair.
In some embodiments, described capacitance measuring device is integrated into testing circuit plate, and described testing circuit plate is attached to the outside surface of described water tank.
The liquid-level detecting method of embodiment of the present invention, it comprises:
S1: provide and be arranged on outside container and the first electrode pair upwards extended from the bottom of described container and the second electrode pair;
S2: measure the capacitance variations value that described first electrode pair and described second electrode pair produce because the liquid level of the liquid in described container changes; And
S3: calculate liquid level according to described capacitance variations value.
In some embodiments, described measuring process comprises:
Measure described container vacant time described in the first initial capacitance value of the first electrode pair and the second initial capacitance value of described second electrode pair; And
First capacitance of described first electrode pair and the second capacitance of described second electrode pair after measuring the accommodating liquid of described container, the capacitance variations value that described first electrode pair produces because of the liquid level change of the liquid in described container is the difference of described first capacitance and described first initial capacitance value; The capacitance variations value that described second electrode pair produces because of the liquid level change of the liquid in described container is the difference of described second capacitance and described second initial capacitance value.
Liquid level detection device is arranged on container part by the liquid level detection device of embodiment of the present invention, dehumidifier and liquid-level detecting method, can measure liquid level, conveniently installs and dismounting.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the schematic diagram of the liquid level detection device of embodiment of the present invention.
Fig. 2 is the using state schematic diagram of the liquid level detection device of embodiment of the present invention.
Fig. 3 is the schematic diagram of the dehumidifier of embodiment of the present invention.
Embodiment
Be described below in detail embodiments of the present invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " clockwise ", orientation or the position relationship of the instruction such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more described features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection or can communication mutually; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is less than second feature.
Disclosing hereafter provides many different embodiments or example is used for realizing different structure of the present invention.Of the present invention open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the present invention.In addition, the present invention can in different example repeat reference numerals and/or reference letter, this repetition is to simplify and clearly object, itself does not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique that the invention provides and the example of material, but those of ordinary skill in the art can recognize the application of other techniques and/or the use of other materials.
The liquid level detection device 100 of embodiment of the present invention comprises the first electrode pair 10, second electrode pair 20 and capacitance measuring device 30.It is outer and upwards extend from the bottom of container 200 that first electrode pair 10 and the second electrode pair 20 are arranged on container 200.Capacitance measuring device 30 is connected with the first electrode pair 10 and the second electrode pair 20, for measuring the capacitance variations value that the first electrode pair 10 and the second electrode pair 20 produce because the liquid level of the liquid 300 in container 200 changes.
The liquid level detection device 100 of embodiment of the present invention, when container 200 is vacant, can utilize capacitance measuring device 30 to measure the capacitance C00 of the first electrode pair 10 and capacitance C10 of the second electrode pair 20.And when the accommodating liquid 300 of container 200 and the height of the liquid level of liquid 300 higher than the first electrode pair 10 time, namely H>H0 is met, H is the liquid level of liquid 300, H0 is the height of the first electrode pair 10, and capacitance measuring device 30 can be utilized to measure the capacitance C01 of the first electrode pair 10 and capacitance C11 of the second electrode pair 20.Thus, can push away △ C0=C01-C00, △ C0 is that the first electrode pair 10 changes at the liquid level of liquid 300 the capacitance variations value produced.In addition, △ C1=C11-C10=△ CH, △ C1 is that the second electrode pair 20 changes at the liquid level of liquid 300 the capacitance variations value produced, △ CH is that the second electrode pair 20 is by the capacitance variations value of liquid 300 filling part before and after liquid 300 is filled, this is because the second electrode pair 20 is not by the not change before and after liquid 300 is filled of the capacitance variations value of liquid 300 filling part, capacitance variations value is zero in other words.Therefore, △ CH/ △ C0=H*k/H0, can obtain H=△ CH*H0/ △ C0*k, wherein, k is constant, for mutually level second electrode pair 20 and the first electrode pair 10 because of relative area, apart from different and produce capacitance variations value between proportionality constant.In other words, the liquid level detection device 100 of embodiment of the present invention is inner without the need to being arranged on container 100, can measure liquid level, convenient installation and dismounting.
In present embodiment, the relative area of mutually level first electrode pair 10 and the second electrode pair 20 and apart from identical.
Concrete, the angle between the first electrode pair 10 can be made identical with the angle between the second electrode pair 20 by arranging, the width of the first electrode pair 10 and the second electrode pair 20 is identical, and extends along identical direction (such as all extend along short transverse or upwards extend with identical inclination angle).So, the relative area of mutually level first electrode pair 10 and the second electrode pair 20 is identical.So, mutually level second electrode pair 20 and the first electrode pair 10 because of relative area, apart from different and produce capacitance variations value between proportionality constant be 1, i.e. k=1, therefore without the need to other measurement and calculation.
In present embodiment, the aspect ratio of the second electrode pair 20 and the first electrode pair 10 is more than or equal to 100.
Be appreciated that, the height of the first electrode pair 10 is equivalent to the measuring accuracy of liquid level detection device 100, therefore, when technique allows and measurement tolerance allows, the aspect ratio of the second electrode pair 20 and the first electrode pair 10 is the bigger the better, and represents that the measuring accuracy of liquid level detection device 100 is more and more higher.In present embodiment, the measuring accuracy of liquid level detection device 100 is 1/100, and certainly, the aspect ratio of the second electrode pair 20 and the first electrode pair 10 is not limited to present embodiment, and can depending on demand.
In present embodiment, the height of the second electrode pair 20 is equal to or slightly less than the height of container 200.
Be appreciated that the height of the second electrode pair 20 is the measurement range of liquid level detection device 100, therefore, the height of the height of the second electrode pair 20 covering container 200 as far as possible, can enlarge measurement range, improves measurement capability.
In present embodiment, liquid level detection device 100 comprises the processor 40 be connected with capacitance measuring device 30, for the treatment of capacitance variations value to obtain liquid level.
So, automatic detection can be realized.Certainly, in other embodiments, also liquid level can be obtained by manually calculating.
Liquid level detection device 100 also comprises the alarm set 50 be connected with processor 40, and alarm set 50 is for sending when the capacitance variations value of the first electrode pair 10 is less than predetermined value the prompting that cannot measure.
If when being appreciated that the height of the liquid level of liquid lower than the first electrode pair 10, liquid level cannot be calculated using the capacitance variations value of the first electrode pair 10 as benchmark.When predetermined value is the height of liquid level higher than the first electrode pair 10, the capacitance variations value of the first electrode pair 10, can measure acquisition in advance.
Refer to Fig. 3, the liquid level detection device 100 of embodiment of the present invention can be applied to dehumidifier 1000.Dehumidifier 1000 comprises container 200, i.e. water tank.
In present embodiment, liquid level detection device 100 can be integrated into testing circuit plate 400 and be attached to the outside surface of container 200.
The liquid-level detecting method of embodiment of the present invention comprises the following steps:
S1: provide and be arranged on outside container 200 and the first electrode pair 10 and the second electrode pair 20 upwards extended from the bottom of container 200;
S2: measure the capacitance variations value that the first electrode pair 10 and the second electrode pair 20 produce because the liquid level of the liquid 300 in container 200 changes; And
S3: calculate liquid level according to capacitance variations value.
In present embodiment, step S2 comprises:
S21: the first initial capacitance value of the first electrode pair 10 and the second initial capacitance value of the second electrode pair 20 when measuring vessel 200 is vacant; And
S22: the first capacitance of the first electrode pair 10 and the second capacitance of the second electrode pair 20 after the accommodating liquid 300 of measuring vessel 200, the capacitance variations value that the first electrode pair 10 produces because of the liquid level change of the liquid in container is the difference of the first capacitance and the first initial capacitance value; The capacitance variations value that second electrode pair 20 produces because of the liquid level change of the liquid 300 in container 200 is the difference of the second capacitance and the second initial capacitance value.
The liquid-level detecting method of embodiment of the present invention, when container 200 is vacant, can utilize capacitance measuring device 30 to measure the capacitance C00 of the first electrode pair 10 and capacitance C10 of the second electrode pair 20.And when the accommodating liquid 300 of container 200 and the height of the liquid level of liquid 300 higher than the first electrode pair 10 time, namely H>H0 is met, H is the liquid level of liquid 300, H0 is the height of the first electrode pair 10, and capacitance measuring device 30 can be utilized to measure the capacitance C01 of the first electrode pair 10 and capacitance C11 of the second electrode pair 20.Thus, can push away △ C0=C01-C00, △ C0 is that the first electrode pair 10 changes at the liquid level of liquid 300 the capacitance variations value produced.In addition, △ C1=C11-C10=△ CH, △ C1 is that the second electrode pair 20 changes at the liquid level of liquid 300 the capacitance variations value produced, △ CH is that the second electrode pair 20 is by the capacitance variations value of liquid 300 filling part before and after liquid 300 is filled, this is because the second electrode pair 20 is not by the not change before and after liquid 300 is filled of the capacitance variations value of liquid 300 filling part, capacitance variations value is zero in other words.Therefore, △ CH/ △ C0=H*k/H0, can obtain H=△ CH*H0/ △ C0*k, wherein, k is constant, for mutually level second electrode pair 20 and the first electrode pair 10 because of relative area, apart from different and produce capacitance variations value between proportionality constant.In other words, the liquid level detection device 100 of embodiment of the present invention is inner without the need to being arranged on container 100, can measure liquid level, convenient installation and dismounting.
In the description of this instructions, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " exemplary embodiment ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with described embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the present invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (10)
1. a liquid level detection device, it is characterized in that comprising and be arranged on outside container and the first electrode pair upwards extended from the bottom of described container and the second electrode pair, described liquid level detection device also comprises the capacitance measuring device be connected with described first electrode pair and described second electrode pair, the capacitance variations value that described capacitance measuring device produces because the liquid level of the liquid in described container changes for measuring described first electrode pair and described second electrode pair.
2. liquid level detection device as claimed in claim 1, its feature is being, mutually level described second electrode pair is with the relative area of described first electrode pair and apart from identical.
3. liquid level detection device as claimed in claim 1, it is characterized in that, the aspect ratio of described second electrode pair and described first electrode pair is more than or equal to 100.
4. liquid level detection device as claimed in claim 1, it is characterized in that, the height of described second electrode pair is equal to or slightly less than the height of described container.
5. liquid level detection device as claimed in claim 1, it is characterized in that, described liquid level detection device comprises the processor be connected with described capacitance measuring device, described processor for the treatment of described capacitance variations value to obtain described liquid level.
6. liquid level detection device as claimed in claim 5, it is characterized in that, described liquid level detection device also comprises and described processor alarm set, and described alarm set is used for sending when the capacitance variations value of described first electrode pair is less than predetermined value the prompting that cannot measure.
7. a dehumidifier, is characterized in that, comprising:
Water tank, and
If be arranged on water tank outer and the first electrode pair upwards extended from the bottom of described water tank and the second electrode pair, described liquid level detection device also comprises the capacitance measuring device be connected with described first electrode pair and described second electrode pair, the capacitance variations value that described capacitance measuring device produces because the liquid level of the liquid in described water tank changes for measuring described first electrode pair and described second electrode pair.
8. dehumidifier as claimed in claim 7, it is characterized in that, described capacitance measuring device is integrated into testing circuit plate, and described testing circuit plate is attached to the outside surface of described water tank.
9. a liquid-level detecting method, is characterized in that, comprising:
S1: provide and be arranged on outside container and the first electrode pair upwards extended from the bottom of described container and the second electrode pair;
S2: measure the capacitance variations value that described first electrode pair and described second electrode pair produce because the liquid level of the liquid in described container changes; And
S3: calculate liquid level according to described capacitance variations value.
10. liquid-level detecting method as claimed in claim 9, it is characterized in that, step S2 comprises:
S21: measure described container vacant time described in the first initial capacitance value of the first electrode pair and the second initial capacitance value of described second electrode pair; And
S22: the first capacitance of described first electrode pair and the second capacitance of described second electrode pair after measuring the accommodating liquid of described container, the capacitance variations value that described first electrode pair produces because of the liquid level change of the liquid in described container is the difference of described first capacitance and described first initial capacitance value; The capacitance variations value that described second electrode pair produces because of the liquid level change of the liquid in described container is the difference of described second capacitance and described second initial capacitance value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510468366.6A CN105043502A (en) | 2015-07-31 | 2015-07-31 | Liquid level detection device, liquid level detection method and dehumidifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510468366.6A CN105043502A (en) | 2015-07-31 | 2015-07-31 | Liquid level detection device, liquid level detection method and dehumidifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105043502A true CN105043502A (en) | 2015-11-11 |
Family
ID=54450226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510468366.6A Pending CN105043502A (en) | 2015-07-31 | 2015-07-31 | Liquid level detection device, liquid level detection method and dehumidifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105043502A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105628143A (en) * | 2016-02-02 | 2016-06-01 | 苏州元禾医疗器械有限公司 | Liquid volume detection method and liquid volume detection device used for negative pressure wound therapy equipment |
| CN107796482A (en) * | 2016-09-05 | 2018-03-13 | 比亚迪股份有限公司 | Liquid-level detecting method and liquid level detection device |
| CN108332819A (en) * | 2018-02-27 | 2018-07-27 | 南京诺尔曼生物技术有限公司 | The method of liquid level in liquid storage detection structure, device and detection liquid storage bottle |
| CN109443489A (en) * | 2018-11-13 | 2019-03-08 | 世强先进(深圳)科技股份有限公司 | A kind of capacitance type liquid level measuring device and method |
| CN113252136A (en) * | 2021-05-12 | 2021-08-13 | 北京布莱迪测控仪表有限公司 | Liquid level sensor |
| CN113670408A (en) * | 2021-09-14 | 2021-11-19 | 珠海格力电器股份有限公司 | Dish washing machine liquid level detection method and device and dish washing machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101709988A (en) * | 2009-12-10 | 2010-05-19 | 昝昕武 | Automobile oil level sensing method and sensor |
| CN103038612A (en) * | 2010-07-28 | 2013-04-10 | 恩德莱斯和豪瑟尔两合公司 | Device for determining and/or monitoring a prescribed fill level |
| CN104457907A (en) * | 2014-12-10 | 2015-03-25 | 华帝股份有限公司 | Novel non-contact detection device for measuring liquid level in insulating container |
-
2015
- 2015-07-31 CN CN201510468366.6A patent/CN105043502A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101709988A (en) * | 2009-12-10 | 2010-05-19 | 昝昕武 | Automobile oil level sensing method and sensor |
| CN103038612A (en) * | 2010-07-28 | 2013-04-10 | 恩德莱斯和豪瑟尔两合公司 | Device for determining and/or monitoring a prescribed fill level |
| CN104457907A (en) * | 2014-12-10 | 2015-03-25 | 华帝股份有限公司 | Novel non-contact detection device for measuring liquid level in insulating container |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105628143A (en) * | 2016-02-02 | 2016-06-01 | 苏州元禾医疗器械有限公司 | Liquid volume detection method and liquid volume detection device used for negative pressure wound therapy equipment |
| CN107796482A (en) * | 2016-09-05 | 2018-03-13 | 比亚迪股份有限公司 | Liquid-level detecting method and liquid level detection device |
| CN108332819A (en) * | 2018-02-27 | 2018-07-27 | 南京诺尔曼生物技术有限公司 | The method of liquid level in liquid storage detection structure, device and detection liquid storage bottle |
| CN109443489A (en) * | 2018-11-13 | 2019-03-08 | 世强先进(深圳)科技股份有限公司 | A kind of capacitance type liquid level measuring device and method |
| WO2020098633A1 (en) * | 2018-11-13 | 2020-05-22 | 世强先进(深圳)科技股份有限公司 | Capacitive liquid level measurement device and method |
| CN113252136A (en) * | 2021-05-12 | 2021-08-13 | 北京布莱迪测控仪表有限公司 | Liquid level sensor |
| CN113670408A (en) * | 2021-09-14 | 2021-11-19 | 珠海格力电器股份有限公司 | Dish washing machine liquid level detection method and device and dish washing machine |
| CN113670408B (en) * | 2021-09-14 | 2022-07-08 | 珠海格力电器股份有限公司 | Dish washing machine liquid level detection method and device and dish washing machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105043502A (en) | Liquid level detection device, liquid level detection method and dehumidifier | |
| JP5934562B2 (en) | Liquid level detector | |
| CN100590396C (en) | Measuring device for determining the flow rate of electrically conductive liquids and conductivity measuring device, measuring element and method | |
| CN105865568B (en) | Nondestructive quantitative detection device for grouting sleeve for steel bar connection | |
| US10641736B2 (en) | Apparatus for determining and/or monitoring at least one process variable of a medium | |
| CN205059284U (en) | Vehicle and fuel display device who is used for vehicle | |
| CN101981415A (en) | Method for measuring the volume flow of electrically conductive liquids through a vessel | |
| CN109642815B (en) | Improvements in or relating to vibrating tuning fork level switches | |
| US6622557B2 (en) | Level sensor and method of registering a level in a container | |
| US10114139B1 (en) | Multi-capacitor liquid detection device and method(s) of use | |
| KR100962868B1 (en) | water level | |
| JP4415030B2 (en) | Liquid storage tank leak detection system and leak detection method | |
| CN205879171U (en) | Static level gauge applied to liquid levels | |
| US10175086B2 (en) | Device and method for measuring the height of a liquid in a container | |
| KR101030342B1 (en) | Capacitive water level sensor and system | |
| JP6477240B2 (en) | Liquid level detection device and liquid level detection unit | |
| CN208953402U (en) | A kind of strength of fluid detector and concentration of seawater detection device | |
| CN207556645U (en) | Mobile blanc fixe tank claims to put device | |
| US20150300864A1 (en) | Liquid level sensor system | |
| KR20090125868A (en) | Capacitive fuel level detection device using tilt angle sensor | |
| CN103616057A (en) | Method and device for measuring level of water in non-metal container or pipeline | |
| CN104422493A (en) | Liquid level detection device and liquid storage device | |
| JP6132482B2 (en) | Liquid level detector | |
| CN106441496A (en) | Liquid level measuring method | |
| CN204854896U (en) | Magnetism float levelmeter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151111 |
|
| RJ01 | Rejection of invention patent application after publication |