CN201707108U - Digital scaling liquid level sensing device - Google Patents
Digital scaling liquid level sensing device Download PDFInfo
- Publication number
- CN201707108U CN201707108U CN2010201720581U CN201020172058U CN201707108U CN 201707108 U CN201707108 U CN 201707108U CN 2010201720581 U CN2010201720581 U CN 2010201720581U CN 201020172058 U CN201020172058 U CN 201020172058U CN 201707108 U CN201707108 U CN 201707108U
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- liquid
- float
- rocking bar
- sensor body
- liquid level
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Abstract
The utility model relates to a digital scaling liquid level sensing device which comprises a sensor body arranged outside a container, and is characterized in that a positioning hook is arranged in the container, a measuring rocker arm is rotatably connected onto the positioning hook and is provided with a long end and a short end, and a bending included angle is formed between the long end and the short end. At the same time, a floater is arranged at the long end, and a marking component is arranged at the short end. Therefore, through the cooperation of the measuring rocker arm with a fixed angle and the magnet and the float at the two ends, the scaling process can be simplified. In addition, measuring by virtue of magnetic field variations dispenses with conducting medium in contact with liquid, thereby completely realizing electric isolation and removing safety hazard.
Description
Technical field
The utility model relates to a kind of sensor, relates in particular to a kind of digital calibration solution sensing equipment.
Background technology
Widely used liquid level sensor roughly is divided into two kinds, resistance-type level transducer and capacitance level transducer on the home market at present.Resistance-type level transducer adopts the variation of measuring resistance to measure the height of liquid level.It is that one section resistance wire is put into liquid, one of arm rocking bar is connected with resistance wire as the contact, load onto ball float for other one, when ball float when on liquid level, moving up and down under the buoyancy, the contact contacts at diverse location with resistance wire, and the variation of the resistance value by detecting one of contact and resistance wire comes the height of measuring liquid level then.Capacitance level transducer adopt to be measured the height that changes in capacitance is measured liquid level.It is that a metal bar inserts in the liquid container, and metal bar is as a utmost point of electric capacity, and chamber wall is as another utmost point of electric capacity.Two interelectrode media are liquid and top gas thereof.Because the specific inductive capacity of liquid is different with the specific inductive capacity on the liquid level, then when liquid level change, dielectric constant values total between two electrodes changes thereupon, thereby electric capacitance change.So, can come the height of measuring liquid level by the variation that detects two interelectrode electric capacitys.
This shows,, all need conducting medium and insert in the liquid, and in order to increase accuracy of detection, conducting medium must be higher than liquid level variation height no matter be resistance-type level transducer or capacitance level transducer.Because the occasion that this class sensor uses is very many, and the container of its carrying liquid also has nothing in common with each other, so the length of the conducting medium of using also has nothing in common with each other, thereby make this type of sensor all need the process of a demarcation, with the resistance value of noting the different length conducting medium or the variation range of capacitance, and then come result of calculation according to different value.In case the data of record have a point tolerance, will cause the detected data of this liquid level sensor inaccurate.In addition on the one hand, no matter be resistance-type level transducer or capacitance level transducer, all need conducting medium and contact with liquid.In case yet that waterproofing protection is done is bad, liquid is easy to the open circuit potential plate, causes working sensor undesired.More seriously, this class liquid level sensor is widely used in fuel oil or the liquefied gas, and the fault in case circuit is short-circuited produces Mars, and consequence is with hardly imaginable.
Summary of the invention
The purpose of this utility model is to overcome the above problem that prior art exists, and a kind of digital calibration solution sensing equipment is provided.
For realizing the purpose of this utility model numeral calibration solution sensing equipment, include sensor body, described sensor body is arranged on external container, and wherein: described internal tank is provided with the location grab, is rotatably connected to the measurement rocking bar on the grab of location; Described measurement rocking bar is divided into long end and short end; Be provided with the bending angle between described long end and the short end; Described long end is provided with float, and described short end is provided with the sign parts.
Further, above-mentioned digital calibration solution sensing equipment, wherein, the bending angle of described measurement rocking bar is provided with bayonet socket, and bayonet socket is axle with the location grab and is rotationally connected.
Further, above-mentioned digital calibration solution sensing equipment, wherein, described sign parts are magnet.
Again further, above-mentioned digital calibration solution sensing equipment, wherein, described sensor body is provided with lead, and lead is provided with connector.
Adopt technical solutions of the utility model, cooperate the magnet and the float at two ends, can simplify the process of demarcation by the certain measurement rocking bar of angle, guarantee to detect accurately.What is more important adopts the variation in magnetic field to measure, and does not have the conducting medium that contacts with liquid, can not have the corrosion of liquid to circuit board in the digital calibration solution sensing equipment.And, can realize complete electrical isolation, eliminate safe hidden trouble.
The purpose of this utility model, advantage and characteristics will illustrate by the non-limitative illustration of following preferential embodiment and explain that these embodiment only provide as an example with reference to accompanying drawing.
Description of drawings
When Fig. 1 is the liquid trunkful, the position view of float and magnet;
When Fig. 2 is the liquid empty van, the position view of float and magnet.
The implication of each Reference numeral is as follows among the figure:
1 sensor body, 2 containers
3 location grabs 4 are measured rocking bar
5 floats, 6 magnet
7 connectors, 8 leads
Embodiment
Digital calibration solution sensing equipment shown in Fig. 1～2 includes sensor body 1, and described sensor body 1 is arranged on container 2 outsides, and its special feature is: described container 2 inside are provided with location grab 3, change to be connected with at location grab 3 and measure rocking bar 4.Further, measure rocking bar 4 and be divided into long end and short end, described long end is provided with float 5, and described short end is provided with the sign parts.
In conjunction with the utility model one preferred implementation, the bending angle of measuring rocking bar 4 is provided with bayonet socket, and bayonet socket is axle with location grab 3 and is rotationally connected.Like this, can be convenient to measure rocking bar 4 assembles fast with container 2 inner realizations.And, by bayonet socket and location cooperating between the grab 3, can not carry out lockedly to the position of measuring rocking bar 4, do not influence that to measure rocking bar 4 serve as spool to be rotated with location grab 3.
Simultaneously, can better know sign parts position for sensor body 1, improve the levels of precision of measuring, described sign parts are magnet 6.Certainly, consider the communication between sensor body 1 and other external device (ED)s, be provided with lead 8 on sensor body 1, lead 8 is provided with connector 7.Thus,, can realize the intercommunication of data, help expansion of the present utility model by connector 7 being connected into outside part device PORT COM.
By practical application of the present utility model:, therefore under buoyancy function, can allow float 5 drive to measure the rocking bars 4 serve as spool to be rotated with location grab 3 because float 5 is in liquid.That is to say that as shown in Figure 1, when the liquid trunkful in the container 2, float 5 is in a certain location respectively with magnet 6, promptly float 5 is positioned at a point position, and magnet 6 is positioned at c point position.When the liquid in the container 2 during near empty van, float 5 can descend gradually.Fix owing to measure the bending angle of rocking bar 4, therefore, float 5 and the magnet 6 of this moment can be in another certain location respectively.Specifically, as shown in Figure 2, float 5 sinks, and is positioned at b point position, and 6 of magnet are positioned at d point position.
Further, the process of magnet 6 from the c position to the d position, for the constant sensor of stationkeeping, the magnetic field intensity of generation is different.In other words, the process of magnet 6 from the c position to the d change in location, the magnetic field intensity that magnet 6 produces just in time can make the voltage signal of the linear variation of parts output in this sensor body 1.
Again further, because the individuality of container 2 there are differences, can cause measuring rocking bar 4 positions and have change.Therefore, change as long as the corresponding positions of parts in the sensor body 1 and magnet 6 is equipped with a bit, its magnetic field intensity will change, and causes output voltage values to change.Therefore need the process of a demarcation in use.Specifically, at the utility model when mounted, this sensor is connected with computing machine by lead 8, then float 5 is placed on the trunkful position, by computer command, records of values gets off at this moment.Afterwards, float 5 is placed on the empty van position, records of values gets off to get final product at this moment.This calibration process is fast and convenient.
By above-mentioned character express and in conjunction with the accompanying drawings as can be seen, adopt the utility model after, cooperate the magnet and the float at two ends by the certain measurement rocking bar of angle, can simplify the process of demarcation, guarantee to detect accurately.What is more important adopts the variation in magnetic field to measure, and does not have the conducting medium that contacts with liquid, can not have the corrosion of liquid to circuit board in the digital calibration solution sensing equipment.And, can realize complete electrical isolation, eliminate safe hidden trouble.
Certainly, more than only be concrete exemplary applications of the present utility model, protection domain of the present utility model is not constituted any limitation.In addition to the implementation, the utility model can also have other embodiment.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop within the utility model scope required for protection.
Claims (4)
1. digital calibration solution sensing equipment includes sensor body, and described sensor body is arranged on external container, it is characterized in that: described internal tank is provided with the location grab, is rotatably connected to the measurement rocking bar on the grab of location; Described measurement rocking bar is divided into long end and short end; Be provided with the bending angle between described long end and the short end; Described long end is provided with float, and described short end is provided with the sign parts.
2. digital calibration solution sensing equipment according to claim 1 is characterized in that: the bending angle of described measurement rocking bar is provided with bayonet socket, and bayonet socket is axle with the location grab and is rotationally connected.
3. digital calibration solution sensing equipment according to claim 1 is characterized in that: described sign parts are magnet.
4. digital calibration solution sensing equipment according to claim 1, it is characterized in that: described sensor body is provided with lead, and lead is provided with connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201720581U CN201707108U (en) | 2010-04-28 | 2010-04-28 | Digital scaling liquid level sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201720581U CN201707108U (en) | 2010-04-28 | 2010-04-28 | Digital scaling liquid level sensing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201707108U true CN201707108U (en) | 2011-01-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201720581U Expired - Fee Related CN201707108U (en) | 2010-04-28 | 2010-04-28 | Digital scaling liquid level sensing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201707108U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235904A (en) * | 2010-04-28 | 2011-11-09 | 苏州工业园区易辰电子系统有限公司 | Digital calibration liquid level sensing device |
-
2010
- 2010-04-28 CN CN2010201720581U patent/CN201707108U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235904A (en) * | 2010-04-28 | 2011-11-09 | 苏州工业园区易辰电子系统有限公司 | Digital calibration liquid level sensing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110112 Termination date: 20160428 |