CN110785636B - Electromagnetic flowmeter - Google Patents
Electromagnetic flowmeter Download PDFInfo
- Publication number
- CN110785636B CN110785636B CN201880038776.9A CN201880038776A CN110785636B CN 110785636 B CN110785636 B CN 110785636B CN 201880038776 A CN201880038776 A CN 201880038776A CN 110785636 B CN110785636 B CN 110785636B
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- electrode
- circuit board
- amplifying circuit
- electromagnetic flowmeter
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- 239000012530 fluid Substances 0.000 claims abstract description 21
- 230000005284 excitation Effects 0.000 claims abstract description 16
- 238000005259 measurement Methods 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 11
- 238000004804 winding Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 13
- 230000003321 amplification Effects 0.000 description 7
- 238000003199 nucleic acid amplification method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000007547 defect Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000008054 signal transmission Effects 0.000 description 3
- 238000003556 assay Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/56—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects
- G01F1/58—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by electromagnetic flowmeters
- G01F1/588—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by electromagnetic flowmeters combined constructions of electrodes, coils or magnetic circuits, accessories therefor
Abstract
An electromagnetic flow meter, comprising: the measuring tube (10), the measuring tube (10) is used for the fluid to be measured to flow; the excitation coil (11), the excitation coil (11) is twined outside the survey tube (10), is used for producing the magnetic field; the device comprises a first electrode (12) and a second electrode (13), wherein the first electrode (12) and the second electrode (13) are separately arranged on two sides of a measuring tube (10) and used for forming an electromotive force signal in direct proportion to the flow of a fluid to be measured; and the amplifying circuit board (14) is conducted with the first electrode (12) and the second electrode (13), and the amplifying circuit board (14) is rigidly connected with the first electrode (12) and the amplifying circuit board (14) is rigidly connected with the second electrode (13). The electromagnetic flowmeter can avoid the situation of distortion of the measuring result and realize higher measuring precision.
Description
Technical Field
The invention relates to the technical field of electronic devices, in particular to an electromagnetic flowmeter.
Background
When the electromagnetic flowmeter is used for measuring the flow of fluid, the electromagnetic flowmeter is not influenced by the change of the density, viscosity, temperature, pressure and conductivity of the fluid, so that the electromagnetic flowmeter has obvious advantages when being applied to the field of agricultural unmanned aerial vehicles with variable media. Moreover, the low straight pipe section of the electromagnetic flowmeter requires no moving parts, so that the installation space of the electromagnetic flowmeter is smaller, and therefore, the installation of the electromagnetic flowmeter on the agricultural unmanned aerial vehicle also has obvious advantages.
In the existing electromagnetic flowmeter, a lead is often used for connecting an electrode and a signal amplification circuit. In practical applications, in order to reduce interference of the excitation coil on signal transmission of the conducting wire, a shielding wire is often required to be connected between the electrode and the signal amplifying circuit. Specifically, the shield wires may be soldered to the electrodes and the signal amplification circuit, respectively.
However, in the conventional electromagnetic flowmeter, since the connection part between the shield wire and the electrode and the signal amplification circuit is difficult to shield, the shield wire is easily interfered by the excitation coil during signal transmission, so that the defect that the signal of the shield wire is unstable during signal transmission is easily caused, and furthermore, the measurement result of the electromagnetic flowmeter is easily distorted.
Disclosure of Invention
In view of this, in order to solve the problem that the conventional electromagnetic flowmeter is easy to have a distorted measurement result, an embodiment of the present invention provides an electromagnetic flowmeter.
The embodiment of the invention discloses an electromagnetic flowmeter, which comprises:
the measuring tube is used for flowing the fluid to be measured;
an excitation coil wound outside the measurement tube for generating a magnetic field;
the first electrode and the second electrode are separately arranged on two sides of the measuring tube and are used for forming an electromotive force signal which is in direct proportion to the flow of the fluid to be measured;
the amplifying circuit board is communicated with the first electrode and the second electrode, and the amplifying circuit board is rigidly connected with the first electrode and the second electrode.
The embodiment of the invention has the following advantages:
in the embodiment of the invention, the amplifying circuit board is conducted with the first electrode and the second electrode, and the amplifying circuit board is conducted with the first electrode, the amplifying circuit board is conducted with the second electrode
The second electrodes are rigidly connected, so that the arrangement of shielding wires between the amplifying circuit board and the first and second electrodes for connection can be avoided. Therefore, in the process of transmitting the electromotive force signals formed by the first electrode and the second electrode to the amplifying circuit board, the electromotive force signals are difficult to be interfered by the exciting coil, so that the defect of unstable signals is caused, the situation that the measuring result of the electromagnetic flowmeter is distorted is avoided, and the measuring precision of the electromagnetic flowmeter can be improved.
Drawings
FIG. 1 is a schematic perspective view of an electromagnetic flowmeter of the present invention;
FIG. 2 is a schematic cross-sectional view of the electromagnetic flow meter shown in FIG. 1;
fig. 3 is a schematic top down view of the electromagnetic flowmeter shown in fig. 1.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The embodiment of the invention provides an electromagnetic flowmeter, which specifically comprises: a measurement tube, which can be used for flowing the fluid to be measured; an excitation coil wound outside the measurement tube for generating a magnetic field; the first electrode and the second electrode are separately arranged on two sides of the measuring tube and are used for forming an electromotive force signal which is in direct proportion to the flow of the fluid to be measured; the amplifying circuit board is communicated with the first electrode and the second electrode, and the amplifying circuit board is rigidly connected with the first electrode and the second electrode.
In the embodiment of the invention, the amplifying circuit board is conducted with the first electrode and the second electrode, and the amplifying circuit board is rigidly connected with the first electrode and the amplifying circuit board is rigidly connected with the second electrode, so that the amplifying circuit board can be prevented from being connected with the first electrode and the second electrode by arranging shielding wires. Therefore, in the process of transmitting the electromotive force signals formed by the first electrode and the second electrode to the amplifying circuit board, the electromotive force signals are difficult to be interfered by the exciting coil, so that the defect of unstable signals is caused, the situation that the measuring result of the electromagnetic flowmeter is distorted is avoided, and the measuring precision of the electromagnetic flowmeter can be improved.
Referring to fig. 1, a schematic perspective view of an electromagnetic flowmeter according to the present invention is shown, referring to fig. 2, a schematic sectional view of the electromagnetic flowmeter shown in fig. 1 is shown, and referring to fig. 3, a schematic top-down view of the electromagnetic flowmeter shown in fig. 1 is shown. The method specifically comprises the following steps:
an assay tube 10, the assay tube 10 being usable for flow of a fluid to be assayed.
And an excitation coil 11 wound outside the measuring tube 10 for generating a magnetic field.
The measuring tube comprises a first electrode 12 and a second electrode 13, wherein the first electrode 12 and the second electrode 13 are separately arranged on two sides of the measuring tube 10 and are used for forming an electromotive force signal which is in direct proportion to the flow of the fluid to be measured.
And the amplifying circuit board 14 is conducted between the amplifying circuit board 14 and the first electrode 12 and between the amplifying circuit board 14 and the second electrode 13, and the amplifying circuit board 14 and the first electrode 12 and between the amplifying circuit board 14 and the second electrode 13 are in rigid connection.
In the embodiment of the present invention, the measuring tube 10 may be used for flowing a fluid to be measured, specifically, the fluid to be measured may be a pesticide solution, a fertilizer solution, or other fluid, and the embodiment of the present invention does not limit the specific type of the fluid to be measured.
In practical applications, the excitation coil 11 may be wound outside the measuring tube 10 for generating a magnetic field. Specifically, in order to avoid polarization of the electrodes in the measuring tube 10 and prolong the service life of the electromagnetic flowmeter, the exciting coil 11 may be wound with an alternating magnetic field under excitation of a power frequency power supply.
In the embodiment of the present invention, the electromagnetic flow meter may further include a first electrode 12 and a second electrode 13, where the first electrode 12 and the second electrode 13 are separately disposed on two sides of the measuring tube 10, and are used for forming an electromotive force signal proportional to the flow rate of the fluid to be measured. Specifically, an electromotive signal proportional to the flow rate of the fluid to be measured may be formed between the first electrode 12 and the second electrode 13 on the line of action of the magnetic field generated by the exciting coil 11, and the larger the flow rate of the fluid to be measured, the larger the value of the electromotive signal. That is, the value of the electromotive force signal may reflect the flow rate of the fluid to be measured.
It is understood that in practical applications, the first electrode 12 may be located at the top end of the measuring tube 10 and the second electrode 13 may be located at the bottom end of the measuring tube 10, or the first electrode 12 may be located at the bottom end of the measuring tube 10 and the second electrode 13 may be located at the top end of the measuring tube 10, and the specific positions of the first electrode 12 and the second electrode 13 in the measuring tube 10 may not be limited in the embodiments of the present invention.
In an embodiment of the present invention, the electromagnetic flowmeter may further include: and the amplifying circuit board 14 is conducted between the amplifying circuit board 14 and the first electrode 12 and between the amplifying circuit board 14 and the second electrode 13, and the amplifying circuit board 14 and the first electrode 12 and between the amplifying circuit board 14 and the second electrode 13 are in rigid connection. In practical application, the amplifying circuit board may be configured to perform a method on the electromotive force signal formed by the first electrode 12 and the second electrode 13, and transmit the amplified electromotive force signal to a processor, so that the processor can calculate the flow rate of the liquid to be measured according to the amplified electromotive force signal.
Specifically, an amplification circuit is provided in the amplification circuit board 14; the amplifying circuit is connected to the first electrode 12 and the second electrode 13, and is configured to amplify the electromotive force signal formed by the first electrode 12 and the second electrode 13.
Optionally, the amplifying circuit may include a filter, and the filter may be configured to filter out noise in the electromotive force signal, so as to improve the signal quality of the electromotive force signal.
In the embodiment of the present invention, since the amplifying circuit board 14 and the first electrode 12 and the amplifying circuit board 14 and the second electrode 13 are rigidly connected, in the process of transmitting the electromotive force signal formed by the first electrode 12 and the second electrode 13 to the amplifying circuit board 14, the electromotive force signal is hardly interfered by the excitation coil 11 to cause a defect of unstable signal, thereby avoiding a situation that a measurement result of the electromagnetic flowmeter is distorted, and further improving the measurement accuracy of the electromagnetic flowmeter.
Specifically, the amplifying circuit board 14 may include a first sub circuit board 141 and a second sub circuit board 142, wherein the first sub circuit board 141 is rigidly connected to the first electrode 12; the second sub-circuit board 142 is rigidly connected to the second electrode 13.
In practical applications, the amplifying circuit board 14 may further include: a flexible circuit board 143; the flexible circuit board 143 is connected to the first sub circuit board 141 and the second sub circuit board 142, respectively. Specifically, the first electrode 12 and the second electrode 13 are separately disposed on two sides of the measuring tube 10, and the first sub circuit board 141 is rigidly connected to the first electrode 12; the second sub circuit board 142 is rigidly connected to the second electrode 13, so that the first sub circuit board 142 and the second sub circuit board 143 are respectively located on both sides of the measuring tube 10 in the assembled state of the electromagnetic meter. In the embodiment of the present invention, since the first sub circuit board 141 and the second sub circuit board 142 can be connected by the flexible circuit board 143, the installation space occupied by the amplifying circuit board 14 can be greatly reduced, and further, the volume of the electromagnetic flowmeter can be reduced.
It should be understood that, in fig. 1 to fig. 3, in order to clearly illustrate the structure of the enlarged circuit board 14, only the first sub circuit board 141 and the first electrode 12 are shown in a rigid connection state, and the second sub circuit board 142 is shown in an unfolded state, but in practical application, in an assembly state of the electromagnetic meter, the second sub circuit board 142 and the second electrode 13 need to be in a rigid connection state, and a specific connection relationship thereof refers to a connection relationship between the first word circuit board 141 and the first electrode 12, and details are not described herein.
In an alternative embodiment of the present invention, the connection between the amplifying circuit board 14 and the first electrode 12 and the connection between the amplifying circuit board 14 and the second electrode 13 may be made by conductive fasteners 15. Specifically, the conductive fastener 15 may include, but is not limited to, any one of a conductive bolt, a conductive screw, or a conductive stud, and the specific type of the conductive fastener 15 may not be limited by the embodiments of the present invention.
In practical applications, the conductive fastening member 15 may be disposed at a predetermined angle with respect to the winding direction of the exciting coil 11. Specifically, the preset included angle may be an included angle close to 90 degrees, and in practical application, under the condition that the included angle close to 90 degrees is formed between the conductive fastening piece 15 and the winding direction of the excitation coil 11, the interference of the magnetic field generated by the excitation coil 11 on the conductive fastening piece 15 may be further reduced, and further, the measurement accuracy of the electromagnetic flowmeter may be further improved.
Specifically, the first sub circuit board 141 and the second sub circuit board 142 are respectively provided with a first through hole 144; the first electrode 12 and the second electrode 13 are respectively provided with a second threaded hole 16.
The conductive fastener 15 can pass through the first through hole 144 on the first sub circuit board 141 and the second threaded hole 16 on the first electrode 12 in sequence, so as to realize conduction and rigid connection between the first sub circuit board 141 and the first electrode 12.
The conductive fastener 15 can pass through the first through hole 144 on the second sub circuit board 142 and the second threaded hole 16 on the second electrode 13 in sequence, so as to realize conduction and rigid connection between the second sub circuit board 142 and the second electrode 13.
In practical application, under the condition that the amplifying circuit board 14 and the first electrode 12 and the amplifying circuit board 14 and the second electrode 13 are connected through the conductive fasteners 15, the amplifying circuit board 14, the first electrode 12 and the second electrode 13 can be conveniently detached and installed, and the maintainability of the electromagnetic flowmeter is improved.
In another alternative embodiment of the present invention, the connection between the amplifying circuit board 14 and the first electrode 12 and the connection between the amplifying circuit board 14 and the second electrode 13 may be soldered. In practical application, in the case of soldering connection between the large circuit board 14 and the first electrode 12 and between the amplifying circuit board 14 and the second electrode 13, the connection relationship between the amplifying circuit board 14 and the first electrode 12 and between the amplifying circuit board 14 and the second electrode 13 can be made simpler, so that the structural cost of the electromagnetic flowmeter can be reduced.
In practical applications, the electromagnetic flowmeter may further include: a sealing gasket 17; wherein, the sealing gasket 17 is arranged between the first electrode 12 and one end of the measuring tube 10 and is used for realizing the sealing connection between the first electrode 12 and the measuring tube 10; a sealing gasket 17 may also be provided between the second electrode 13 and the other end of the measurement tube 10 for achieving a sealed connection between the second electrode 13 and the measurement tube 10.
Specifically, the sealing washer 17 may be a flat washer, an elastic washer, or a rubber washer, and the specific type of the sealing washer 17 is not limited in the embodiment of the present invention.
In the embodiment of the present invention, the amplifying circuit board 14 may further include: the power connection module 145, the power connection module 145 may be used to implement connection between the amplifying circuit board 14 and a power supply, and specifically, the power connection module 145 may be a power interface, a power socket, or the like. In practical applications, the power connection module 145 may be disposed on the first sub circuit board 141 or the second sub circuit board 142, and the specific position of the power connection module 145 may not be limited in the embodiment of the present invention.
In practical applications, the electromagnetic flow meter may further include a housing 18; the measuring tube 10, the excitation coil 11, and the amplification circuit board 14 may be fixed to the housing 18. The housing 18 may be used to fixedly support the measurement tube 10, the excitation coil 11, and the amplification circuit board 14.
Specifically, the casing 18 is further provided with an inlet pipe 181 and an outlet pipe 182; the inflow pipe 181 and the outflow pipe 182 are respectively communicated with the measurement pipe 10, the inflow pipe 181 may be configured to introduce the flowsheet to be measured into the measurement pipe 10, and the outflow pipe 182 may be configured to lead the fluid to be measured out of the measurement pipe 10.
In summary, the electromagnetic current meter according to the embodiment of the present invention at least has the following advantages:
in the embodiment of the invention, the amplifying circuit board is conducted with the first electrode and the second electrode, and the amplifying circuit board is rigidly connected with the first electrode and the amplifying circuit board is rigidly connected with the second electrode, so that the amplifying circuit board can be prevented from being connected with the first electrode and the second electrode by arranging shielding wires. Therefore, in the process of transmitting the electromotive force signals formed by the first electrode and the second electrode to the amplifying circuit board, the electromotive force signals are difficult to be interfered by the exciting coil, so that the defect of unstable signals is caused, the situation that the measuring result of the electromagnetic flowmeter is distorted is avoided, and the measuring precision of the electromagnetic flowmeter can be improved.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The electromagnetic current meter provided by the invention is described in detail, and the principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (11)
1. An electromagnetic flow meter, comprising:
the measuring tube is used for flowing the fluid to be measured;
an excitation coil wound outside the measurement tube for generating a magnetic field;
the first electrode and the second electrode are separately arranged on two sides of the measuring tube and are used for forming an electromotive force signal which is in direct proportion to the flow of the fluid to be measured;
the amplifying circuit board is conducted with the first electrode and the second electrode, and is in rigid connection with the first electrode and the second electrode;
the amplifying circuit board comprises a first sub circuit board, a second sub circuit board and a flexible circuit board, wherein the first sub circuit board and the second sub circuit board are respectively positioned at two ends of the amplifying circuit board, and the flexible circuit board is respectively connected with the first sub circuit board and the second sub circuit board; the first sub circuit board is rigidly connected with the first electrode, and the second sub circuit board is rigidly connected with the second electrode.
2. An electromagnetic flowmeter as set forth in claim 1 wherein said amplifying circuit board and said first electrode and said amplifying circuit board and said second electrode are connected by electrically conductive fasteners.
3. The electromagnetic flowmeter of claim 2 wherein the conductive fastener is disposed at a predetermined angle to a winding direction of the field coil.
4. The electromagnetic flowmeter of claim 2 wherein the first sub-circuit board and the second sub-circuit board each have a first through hole formed therein;
second threaded holes are formed in the first electrode and the second electrode respectively;
the conductive fastener sequentially passes through the first through hole on the first sub circuit board and the second threaded hole on the first electrode to realize the conduction and rigid connection between the first sub circuit board and the first electrode;
and the conductive fastener sequentially passes through the first through hole on the second sub circuit board and the second threaded hole on the second electrode to realize conduction and rigid connection between the second sub circuit board and the second electrode.
5. The electromagnetic flowmeter of claim 1 wherein the amplifying circuit board further comprises: a power connection module; wherein
The power supply connection module is arranged on the first sub circuit board or the second sub circuit board.
6. An electromagnetic flowmeter according to claim 1 wherein said amplifying circuit board and said first electrode are soldered to each other and said amplifying circuit board and said second electrode are soldered to each other.
7. The electromagnetic flowmeter of claim 1 further comprising: a sealing gasket; wherein
The sealing gasket is arranged between the first electrode and one end of the measuring tube and used for realizing the sealing connection between the first electrode and the measuring tube;
the sealing gasket is also arranged between the second electrode and the other end of the measuring tube and is used for realizing the sealing connection between the second electrode and the measuring tube.
8. The electromagnetic flowmeter of claim 1 wherein said amplifying circuit board has an amplifying circuit disposed therein; wherein
The amplifying circuit is respectively connected with the first electrode and the second electrode and is used for amplifying the electromotive force signals formed by the first electrode and the second electrode.
9. The electromagnetic flow meter of claim 8, wherein the amplifying circuit board includes a filter therein.
10. The electromagnetic flowmeter of claim 1 further comprising: a housing; wherein
The measuring tube, the excitation coil and the amplifying circuit board are respectively fixed on the shell.
11. The electromagnetic flowmeter of claim 10 wherein the housing further comprises an inlet flow tube and an outlet flow tube; wherein
The flow inlet pipe and the flow outlet pipe are respectively communicated with the measuring pipe.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2018/118731 WO2020107467A1 (en) | 2018-11-30 | 2018-11-30 | Electromagnetic flow meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110785636A CN110785636A (en) | 2020-02-11 |
| CN110785636B true CN110785636B (en) | 2021-11-26 |
Family
ID=69383257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880038776.9A Expired - Fee Related CN110785636B (en) | 2018-11-30 | 2018-11-30 | Electromagnetic flowmeter |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110785636B (en) |
| WO (1) | WO2020107467A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235062B (en) * | 2021-11-24 | 2023-07-28 | 无锡欧百仪表科技有限公司 | Shockproof durable electromagnetic flowmeter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201752412U (en) * | 2010-08-06 | 2011-03-02 | 北京太阳电子科技有限公司 | Electrode for non-interference electrophysiological detection |
| DE102010061720A1 (en) * | 2010-11-22 | 2012-05-24 | Endress + Hauser Flowtec Ag | Magnetic-inductive flowmeter |
| CN104101391A (en) * | 2013-04-08 | 2014-10-15 | Smc株式会社 | Electromagnetic flowmeter |
| CN108061581A (en) * | 2016-11-09 | 2018-05-22 | 阿自倍尔株式会社 | Electromagnetic flowmeter |
| CN209296062U (en) * | 2018-11-30 | 2019-08-23 | 深圳市大疆创新科技有限公司 | A kind of electromagnetic flowmeter |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004233203A (en) * | 2003-01-30 | 2004-08-19 | Yamatake Corp | Measuring tube for magnetic flowmeter |
| CN202903253U (en) * | 2012-11-13 | 2013-04-24 | 上海凡宜科技电子有限公司 | Novel electromagnetic flow meter |
| CN202974352U (en) * | 2012-12-12 | 2013-06-05 | 承德市本特思达仪表有限公司 | Plug-in type electromagnetic flowmeter |
| CN205300665U (en) * | 2016-01-04 | 2016-06-08 | 德阳市新泰自动化仪表有限公司 | Anti -jamming electric -magnetic flow meter |
-
2018
- 2018-11-30 WO PCT/CN2018/118731 patent/WO2020107467A1/en active Application Filing
- 2018-11-30 CN CN201880038776.9A patent/CN110785636B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201752412U (en) * | 2010-08-06 | 2011-03-02 | 北京太阳电子科技有限公司 | Electrode for non-interference electrophysiological detection |
| DE102010061720A1 (en) * | 2010-11-22 | 2012-05-24 | Endress + Hauser Flowtec Ag | Magnetic-inductive flowmeter |
| CN104101391A (en) * | 2013-04-08 | 2014-10-15 | Smc株式会社 | Electromagnetic flowmeter |
| CN108061581A (en) * | 2016-11-09 | 2018-05-22 | 阿自倍尔株式会社 | Electromagnetic flowmeter |
| CN209296062U (en) * | 2018-11-30 | 2019-08-23 | 深圳市大疆创新科技有限公司 | A kind of electromagnetic flowmeter |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020107467A1 (en) | 2020-06-04 |
| CN110785636A (en) | 2020-02-11 |
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Granted publication date: 20211126 |