CN102928041B - Small size liquid level detector - Google Patents
Small size liquid level detector Download PDFInfo
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- CN102928041B CN102928041B CN201210444866.2A CN201210444866A CN102928041B CN 102928041 B CN102928041 B CN 102928041B CN 201210444866 A CN201210444866 A CN 201210444866A CN 102928041 B CN102928041 B CN 102928041B
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- inert electrode
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- quartz container
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- liquid level
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Abstract
The present invention discloses a kind of small size liquid level detector, comprise quartz container (1), it is characterized in that: the transversal section of described quartz container (1) is for circular, and its inside is provided with straight inert electrode (2) in pairs, bending inert electrode (3) is also provided with in pairs in the quartz container (1) of straight inert electrode (2) below, one end of bending inert electrode (3) is fixed on the inwall of quartz container (1), the other end is downwards bending, and its end is positioned at the center of quartz container (1), straight inert electrode (2) and bending inert electrode (3) are all successively by receiving conversion circuit and comparing amplifying circuit and be connected with microcontroller, this microcontroller also controls straight inert electrode (2) and bending inert electrode (3) respectively by driving circuit.This is that a kind of structure is simple, designs ingenious, rationally distributed, automatically can carry out the small size liquid level detector of accurate constant volume measurement to organic reagent.
Description
Technical field
The present invention relates to a kind of liquid level detector, particularly a kind of for small size liquid level detector that is accurate, automatic constant volume.
Background technology
In fields such as analytical chemistry, because analytical instrument has certain detectability, in order to meet the requirement of instrument detectability, often need to do concentration to the fluid sample of low concentration, and need constant volume process liquid being carried out to small size at the end of concentration process, for follow-up quantitative test.This constant volume process now generally all needs manually to utilize micro-sampling pin or liquid-transfering gun to operate, and this kind of mode of operation is relatively loaded down with trivial details, wastes time and energy.In order to solve the problem, also has a kind of mode utilizing infra-red detection now, although this mode can realize automatic constant volume, but there is certain limitation, namely when testing liquid is water, constant volume result is comparatively accurate, but just can there is larger error for its result during organic reagent, therefore to need now a kind of can solving the problem, the constant volume being applicable to organic reagent is measured, and can realize method or the device of automatic constant volume.
Summary of the invention
The present invention is the above-mentioned deficiency in order to solve existing for prior art, proposes a kind of structure simple, designs ingenious, rationally distributed, automatically can carry out the small size liquid level detector of accurate constant volume measurement to organic reagent.
Technical solution of the present invention is: a kind of small size liquid level detector, comprise quartz container 1, it is characterized in that: the transversal section of described quartz container 1 is for circular, and its inside is provided with straight inert electrode 2 in pairs, bending inert electrode 3 is also provided with in pairs in quartz container 1 below straight inert electrode 2, one end of bending inert electrode 3 is fixed on the inwall of quartz container 1, the other end is downwards bending, and its end is positioned at the center of quartz container 1, straight inert electrode 2 and bending inert electrode 3 are all successively by receiving conversion circuit and comparing amplifying circuit and be connected with microcontroller, this microcontroller also controls straight inert electrode 2 and bending inert electrode 3 respectively by driving circuit.
Compared with the existing technology, tool has the following advantages in the present invention:
The small size liquid level detector of this kind of version, its structure is simple, designs ingenious, rationally distributed.Traditional liquid capacity-fixed, or adopt micro-sampling pin or liquid-transfering gun to carry out manual operation (complex operation, workload are large), or adopt the mode of infra-red detection automatically to measure (there is larger error for organic reagent), all there is certain defect in above-mentioned two kinds of modes.In order to solve these defects, the present embodiment discloses a kind of structure being applicable to small size organic reagent constant volume, this structure utilizes inert electrode as detecting element cleverly, and in order to avoid causing the error of liquid level height because of the reason such as liquid consistency or capillary effect, also inert electrode is designed to bending, its end is positioned at the center of quartz container, reduces the impact that above-mentioned reason causes liquid level as much as possible.And the manufacture craft of this sniffer is simple, and cheap for manufacturing cost, therefore can say that it has possessed multiple advantage, be particularly suitable for applying in the art, its market outlook are very wide.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.As shown in Figure 1: a kind of small size liquid level detector, comprise the quartz container 1 for carrying liquid, the transversal section of this quartz container 1 is circular, and its inside is provided with straight inert electrode 2 in couples, in the below of straight inert electrode 2, be provided with bending inert electrode 3 equally in couples, one end of these two bending inert electrodes 3 is fixed on the inwall of quartz container 1, the other end is then downwards bending, its end is positioned at the center position of quartz container 1 transversal section, described straight inert electrode 2 and bending inert electrode 3 are successively by receiving conversion circuit and comparing amplifying circuit and be connected with microcontroller, and microcontroller is also controlled straight inert electrode 2 and bending inert electrode 3 respectively by driving circuit, microcontroller produces a fixed square-wave signal frequently, its dutycycle is 50%, after improving driving force by driving circuit, be loaded on straight inert electrode 2 and bending inert electrode 3, when container is at liquid, pulse signal passes to the other end to electrode pair by liquid, and this simulating signal is changed into by receiving conversion circuit and comparing amplifying circuit the digital signal that microcontroller can process according to this,
The course of work of the small size liquid level detector of the embodiment of the present invention is as follows: because receiving circuit shows as high impedance, as long as liquid exists resistance, electric signal just can be propagated.No liquid in quartz container 1 when supposing to start most, and after adding liquid (liquid level is higher than the level height of straight inert electrode 2), after microcontroller detects the signal that straight inert electrode 2 transmits, control host computer primary control program, start to concentrate to the liquid in quartz container 1, in concentrated process, liquid in quartz container 1 constantly reduces, liquid level declines gradually, when liquid level is lower than straight inert electrode 2, concentrate and substantially complete, microcontroller is again controlled program to upper owner and is sent signal, concentration process changes the relatively slow optimal conditions of speed into and concentrates, liquid level continues to decline, when liquid level drops to the disengaging bottom of bending inert electrode 3, enriching service all completes, and constant volume work also declares to be finished.Then utilize the equipment such as conduit the liquid after constant volume to be taken away next step program of feeding to process.
The particular design being positioned at quartz container 1 center bottom of bending inert electrode 3, can avoid because the reason such as liquid consistency, capillary effect causes the inaccurate problem of level gauging as far as possible, ensures the degree of accuracy of constant volume.
Claims (1)
1. a small size liquid level detector, comprise quartz container (1), it is characterized in that: the transversal section of described quartz container (1) is for circular, and its inside is provided with straight inert electrode (2) in pairs, bending inert electrode (3) is also provided with in pairs in the quartz container (1) of straight inert electrode (2) below, one end of bending inert electrode (3) is fixed on the inwall of quartz container (1), the other end is downwards bending, and its end is positioned at the center of quartz container (1), straight inert electrode (2) and bending inert electrode (3) are all successively by receiving conversion circuit and comparing amplifying circuit and be connected with microcontroller, this microcontroller also controls straight inert electrode (2) and bending inert electrode (3) respectively by driving circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210444866.2A CN102928041B (en) | 2012-11-09 | 2012-11-09 | Small size liquid level detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210444866.2A CN102928041B (en) | 2012-11-09 | 2012-11-09 | Small size liquid level detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102928041A CN102928041A (en) | 2013-02-13 |
| CN102928041B true CN102928041B (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210444866.2A Expired - Fee Related CN102928041B (en) | 2012-11-09 | 2012-11-09 | Small size liquid level detector |
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| CN (1) | CN102928041B (en) |
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| CN101476915A (en) * | 2008-11-04 | 2009-07-08 | 水利部交通部电力工业部南京水利科学研究院 | Detection type water level measuring method and detection type water level meter |
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| KR100999366B1 (en) * | 2010-07-01 | 2010-12-09 | (주)정한전자시스템 | Rain-snow gauges used electrical conductivity and method thereof |
| CN102288257A (en) * | 2011-07-28 | 2011-12-21 | 南昌大学 | Device for detecting liquid level by using square signal |
| CN102445252A (en) * | 2011-12-10 | 2012-05-09 | 河南科技大学 | Resistor type water-level digital sensor |
| CN202433055U (en) * | 2011-12-20 | 2012-09-12 | 信息产业部电子第四十研究所华成高新技术公司 | Water level sensor |
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2012
- 2012-11-09 CN CN201210444866.2A patent/CN102928041B/en not_active Expired - Fee Related
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61212702A (en) * | 1985-03-18 | 1986-09-20 | Nippon Kokan Kk <Nkk> | Slag thickness measuring method |
| DE3522616A1 (en) * | 1985-06-25 | 1987-01-08 | Jun Waldemar Tobler | Device for monitoring the water level in the sewage system of a building |
| US4908783A (en) * | 1987-04-28 | 1990-03-13 | Simmonds Precision Products, Inc. | Apparatus and method for determining liquid levels |
| CN2058744U (en) * | 1989-12-30 | 1990-06-27 | 中国科学院上海冶金研究所 | Multicontact defoaming sensor |
| CN2534583Y (en) * | 2002-03-18 | 2003-02-05 | 苏州东方水处理有限责任公司 | Condensate precision treatment positive & negative resin separating pot internal differential resistance type detector |
| CN101169661A (en) * | 2007-11-22 | 2008-04-30 | 广东亿龙电器股份有限公司 | Liquid level induction control device and electric appliance possessing the liquid level induction control device |
| CN101476915A (en) * | 2008-11-04 | 2009-07-08 | 水利部交通部电力工业部南京水利科学研究院 | Detection type water level measuring method and detection type water level meter |
| CN101819055A (en) * | 2010-05-14 | 2010-09-01 | 浙江苏泊尔家电制造有限公司 | Liquid level detection device |
| KR100999366B1 (en) * | 2010-07-01 | 2010-12-09 | (주)정한전자시스템 | Rain-snow gauges used electrical conductivity and method thereof |
| CN102288257A (en) * | 2011-07-28 | 2011-12-21 | 南昌大学 | Device for detecting liquid level by using square signal |
| CN102445252A (en) * | 2011-12-10 | 2012-05-09 | 河南科技大学 | Resistor type water-level digital sensor |
| CN202433055U (en) * | 2011-12-20 | 2012-09-12 | 信息产业部电子第四十研究所华成高新技术公司 | Water level sensor |
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| CN102928041A (en) | 2013-02-13 |
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Granted publication date: 20151118 Termination date: 20201109 |