CN213274391U - Electromagnetic flowmeter with visible electrode - Google Patents

Electromagnetic flowmeter with visible electrode Download PDF

Info

Publication number
CN213274391U
CN213274391U CN202022421157.5U CN202022421157U CN213274391U CN 213274391 U CN213274391 U CN 213274391U CN 202022421157 U CN202022421157 U CN 202022421157U CN 213274391 U CN213274391 U CN 213274391U
Authority
CN
China
Prior art keywords
electrode
buret
electrodes
bush
survey
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.)
Active
Application number
CN202022421157.5U
Other languages
Chinese (zh)
Inventor
张晓栋
曹宽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changzhou Chengfeng Flowmeter Co ltd
Original Assignee
Changzhou Chengfeng Flowmeter Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Changzhou Chengfeng Flowmeter Co ltd filed Critical Changzhou Chengfeng Flowmeter Co ltd
Priority to CN202022421157.5U priority Critical patent/CN213274391U/en
Application granted granted Critical
Publication of CN213274391U publication Critical patent/CN213274391U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Measuring Volume Flow (AREA)

Abstract

The utility model discloses a take electromagnetic flowmeter of visible electrode, including surveying buret, survey buret and pass through the wire and the converter is connected, one side is provided with an electrode in surveying buret's the lateral wall, the opposite side is provided with No. two electrodes in surveying buret's the lateral wall, No. one electrode and No. two electrodes are hollow, the central axis of surveying buret is passed to the line of an electrode and No. two electrodes, the inside visible mechanism that is provided with of an electrode and No. two electrodes, be provided with fixed establishment between an electrode, No. two electrodes and the survey buret, the utility model provides a visible mechanism can survey the medium condition in the survey buret in real time, and then judges the measuring accuracy of surveying buret rapidly, if influence measuring accuracy such as impurity bubble appears in surveying buret simultaneously, artifical accurate judgement influence factor, and then take measures.

Description

Electromagnetic flowmeter with visible electrode
Technical Field
The utility model relates to a flowmeter technical field specifically is an electromagnetic flowmeter who takes visible electrode.
Background
Electromagnetic flowmeter is an application electromagnetic induction principle, the electromotive force induced when through plus magnetic field according to conductive fluid measures conductive fluid flow's an instrument, it is very extensive to use, current electromagnetic flowmeter adopts the electromagnetic induction principle to detect medium flow, normally can only detect full pipe liquid medium flow, in practical application, there are a large amount of bubbles or impurity in probably in the pipeline, the influence is measured, and normal electromagnetic flowmeter can only conjecture the condition in the pipeline through the change of signal of telecommunication, unable direct observation observes the medium condition, the condition that has the erroneous judgement takes place, lead to extravagant manpower and materials, and rely on great to artificial experience, be unfavorable for electromagnetic flowmeter's using widely, the utility model discloses an electromagnetic flowmeter of visual electrode in the area for solve above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a take electromagnetic flowmeter of visual electrode to solve the problem that proposes among the above-mentioned background art.
In order to solve the technical problem, the utility model provides a following technical scheme: take electromagnetic flowmeter of visual electrode, including surveying the buret, survey the buret and pass through the wire and the converter is connected, survey the buret and be used for measuring liquid velocity of flow to pass through the wire with flow information and transmit for the converter, the converter is with the induced electromotive force signal amplification and convert unified standard signal and restrain main interfering signal, and the induced electromotive force signal that detects the electrode is through enlargeing and converting unified standard direct current signal, one side is provided with No. one electrode in the lateral wall of survey buret, the opposite side is provided with No. two electrodes in the lateral wall of survey buret, No. one electrode and No. two electrodes are used for with the conductive fluid circular telegram, and the liquid flow in surveying the buret is measured to the induced electromotive force of conductive fluid through plus magnetic field, No. one electrode and No. two electrodes are hollow, and inside is used for installing visual mechanism, the central axis of surveying buret is, a visible mechanism is provided with to electrode and No. two inside, the medium condition in the survey buret can be surveyed in real time to visible mechanism, and then judges the measuring accuracy of surveying the buret rapidly, if influence measurement accuracy such as impurity bubble appears in surveying the buret simultaneously, the manual work can accurately judge the influence factor, and then takes measures, be provided with fixed establishment between electrode, No. two electrodes and the survey buret, fixed establishment is used for being fixed in the survey buret with electrode and No. two electrodes.
The visual mechanism comprises an LED lamp, a first pressure rod, a first sealing gasket, a first compression nut, a pinhole camera, a second pressure rod, a second sealing gasket and a second compression nut, wherein the LED lamp is arranged at one end, close to the inside of the measuring tube, of the first electrode, the LED lamp is used for providing a light source inside the measuring tube, the first pressure rod is arranged in the first electrode and used for fastening the LED lamp in the first electrode, the first sealing gasket is arranged between the LED lamp and the first pressure rod and used for sealing the outside and the LED lamp and preventing the LED lamp from being interfered by invading impurities, the first compression nut is arranged at one end, close to the outside of the measuring tube, of the first electrode, the first compression nut is used for fixing the LED lamp and the first pressure rod in the first electrode, and the pinhole camera is arranged at one end, close to the inside of the measuring tube, of the second electrode, the camera end of pinhole camera is located the inside of surveying buret for with the inside real-time condition image transmission to the outside of survey buret, make things convenient for the manual work to look over, be provided with the depression bar No. two in No. two electrodes, No. two the depression bar is used for fastening the pinhole camera in No. two electrodes, be provided with No. two sealed pad between pinhole camera and No. two the depression bar, No. two sealed pad is used for sealing between outside and the pinhole camera, prevents that the pinhole camera from interfering with work by the impurity of invasion, the one end that is close to survey buret outside in No. two electrodes is provided with No. two gland nut, No. two gland nut is used for being fixed in No. two electrodes with pinhole camera and No. two depression bars.
Be provided with O type circle No. one between the inner wall of LED lamp and electrode, O type circle is used for sealing between electrode and the LED lamp, prevents to survey intraductal fluid from leaking from the gap between electrode and the LED lamp in the buret, be provided with O type circle No. two between the inner wall of pinhole camera and No. two electrodes, No. two O type circles are used for sealing between No. two electrodes and the pinhole camera, prevent to survey intraductal fluid from leaking from the gap between No. two electrodes and the pinhole camera in the buret.
Fixed establishment includes bush, packing ring, electrode soldering lug, nut, be provided with the bush between the lateral wall of an electrode and survey buret, bush one end is stretched out and is measured the outside of the pipe, the bush is for being used for insulating between an electrode and the survey buret, the packing ring has been cup jointed to the one end that an electrode stretches out and measures the outside of the pipe, the packing ring is used for protecting the electrode soldering lug, the one end that the bush was kept away from to the packing ring is provided with the electrode soldering lug, the electrode soldering lug is used for and an electrode circular telegram, the one end that the packing ring was kept away from to the electrode soldering lug is provided with the nut, the nut is used.
Fixed establishment includes bush, packing ring, electrode soldering lug, nut, be provided with the bush between the lateral wall of No. two electrodes and survey buret, bush one end is stretched out and is measured the outside of the pipe, the bush is used for insulating between No. two electrodes and the survey buret, No. two electrodes stretch out and measure the one end outside the pipe and cup jointed the packing ring, the packing ring is used for protecting the electrode soldering lug, the one end that the bush was kept away from to the packing ring is provided with the electrode soldering lug, the electrode is used for and is switched on with No. two electrodes, the one end that the packing ring was kept away from to the electrode soldering lug is provided with the nut, the.
One end that No. one electrode, No. two electrodes are located survey buret is provided with sword awl double containment annular, sword awl double containment annular is used for sealing between electrode, No. two electrodes and the survey buret, prevents that the fluid from leaking.
Compared with the prior art, the utility model discloses the beneficial effect who reaches is: the utility model discloses be different from traditional electromagnetic flowmeter, be different from traditional electromagnetic flowmeter and can only be through the intraductal condition of change conjecture measurement of signal of telecommunication, the condition that can have the erroneous judgement takes place, leads to extravagant manpower and materials, and relies on great to artificial experience, is unfavorable for electromagnetic flowmeter's using widely, the utility model provides a visual mechanism can survey the intraductal medium condition of measurement in real time, and then judges rapidly the measuring accuracy of surveying buret, if influence measuring accuracy such as impurity bubble appears in surveying buret simultaneously, the artifical influence factor that can accurately judge, and then take measures, the maintenance and the daily use of the flowmeter of being convenient for very much.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a cross-sectional view of an electromagnetic flowmeter with visible electrodes according to the present invention;
FIG. 2 is a detailed view of the utility model at A;
fig. 3 is a detailed view of the utility model B.
In the figure: 1. a measurement tube; 2. a first electrode; 3. a second electrode; 4. a visualization mechanism; 5. a fixing mechanism; 6. an LED lamp; 7. a first pressure lever; 8. a first sealing gasket; 9. a first compression nut; 10. a pinhole camera; 11. a second pressure lever; 12. a second sealing gasket; 13. a second compression nut; 14. a first O-shaped ring; 15. a second O-shaped ring; 16. a bushing; 17. a gasket; 18. an electrode pad; 19. a nut; 20. the knife cone double-sealing ring groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example (b): the utility model provides a technical scheme, as figure 1, the electromagnetic flowmeter with visible electrode, including survey buret 1, survey buret 1 is connected through wire and converter, survey buret 1 is used for measuring the liquid velocity of flow, and transmit flow information to the converter through the wire, the converter amplifies and converts the induced electromotive force signal into unified standard signal and suppresses main interfering signal, the induced electromotive force signal that the electrode detected is amplified and converted into unified standard direct current signal, one side is provided with No. 2 electrode in the lateral wall of survey buret 1, the opposite side is provided with No. 3 electrode in the lateral wall of survey buret 1, No. 2 electrode and No. 3 electrode are used for and electrically conducts the fluid circular telegram, the fluid flow in surveying buret 1 is measured to the electromotive force that external magnetic field induced to the electrically conductive fluid, No. 2 electrode and No. 3 electrode are hollow, No. 2 electrode and No. 3 electrode are the open-ended metal column shell structure in both ends, the interior of the measuring tube is used for installing a visual mechanism 4, a connecting line of a first electrode 2 and a second electrode 3 penetrates through the central axis of the measuring tube 1, the visual mechanism 4 is arranged inside the first electrode 2 and the second electrode 3, the traditional electromagnetic flowmeter can only estimate the condition inside the measuring tube 1 through the change of an electric signal, the misjudgment can be caused, the waste of manpower and material resources is caused, the dependence on manual experience is large, the popularization and the use of the electromagnetic flow meter are not facilitated, the visible mechanism 4 can observe the medium condition in the measuring pipe 1 in real time, thereby rapidly judging the measurement accuracy of the measuring tube 1, and if the measuring tube 1 has impurity bubbles and the like to influence the measurement accuracy, the influencing factors can be accurately judged manually, furthermore, a fixing mechanism 5 is arranged between the first electrode 2, the second electrode 3 and the measuring tube 1, and the fixing mechanism 5 is used for fixing the first electrode 2 and the second electrode 3 in the measuring tube 1.
Referring to fig. 2 to 3, the visual mechanism 4 comprises an LED lamp 6, a first pressure lever 7, a first sealing gasket 8, a first gland nut 9, a pinhole camera 10, a second pressure lever 11, a second sealing gasket 12 and a second gland nut 13, wherein the LED lamp 6 is arranged at one end of the first electrode 2 close to the inside of the measuring tube 1, the irradiation end of the LED lamp 6 is arranged inside the measuring tube 1 and is used for providing a light source inside the measuring tube 1, the first electrode 2 is internally provided with the first pressure lever 7, the first pressure lever 7 is used for fastening the LED lamp 6 in the first electrode 2, the first pressure lever 7 is of a hollow cylindrical structure, a lead passes through the inside of the first pressure lever 7 and is in telecommunication connection with the LED lamp 6, the first pressure lever 7 insulates the lead from the first electrode 2 to prevent short circuit between the first electrode 2 and the lead, the first sealing gasket 8 is arranged between the LED lamp 6 and the first pressure lever 7 and is used for sealing the outside from the LED lamp 6, the LED lamp 6 is prevented from being interfered by invading impurities to work, one end of the first electrode 2 close to the outside of the measuring tube 1 is provided with a first compression nut 9, the first compression nut 9 is in threaded connection with the first electrode 2 and is used for fixing the LED lamp 6 and a first pressure lever 7 in the first electrode 2, one end of the second electrode 3 close to the inside of the measuring tube 1 is provided with a pinhole camera 10, the camera end of the pinhole camera 10 is positioned in the measuring tube 1 and is used for transmitting the real-time condition image in the measuring tube 1 to the outside so as to be convenient for manual checking, a second pressure lever 11 is arranged in the second electrode 3 and is used for fastening the pinhole camera 10 in the second electrode 3, the second pressure lever 11 is of a hollow cylinder structure, a lead passes through the inside and is in telecommunication connection with the pinhole camera 10, and the second pressure lever 11 insulates the lead from the second electrode 3, prevent to take place the short circuit between No. two electrodes 3 and the wire, be provided with No. two sealed pad 12 between pinhole camera 10 and No. two depression bars 11, No. two sealed pads 12 are used for sealing between outside and pinhole camera 10, prevent that pinhole camera 10 from being disturbed work by the impurity of invasion, the one end of nearly surveying the outside of buret 1 in No. two electrodes 3 is provided with No. two gland nut 13, No. two gland nut 13 and No. two electrodes 3 inside spiro union for be fixed in No. two electrodes 3 with pinhole camera 10 and No. two depression bars 11.
As shown in fig. 2-3, a first O-shaped ring 14 is arranged between the inner walls of the LED lamp 6 and the first electrode 2, the first O-shaped ring 14 is used for sealing the first electrode 2 and the LED lamp 6, the leakage of fluid in the measuring tube 1 from a gap between the first electrode 2 and the LED lamp 6 is prevented, a second O-shaped ring 15 is arranged between the inner walls of the pinhole camera 10 and the second electrode 3, the second O-shaped ring 15 is used for sealing the second electrode 3 and the pinhole camera 10, and the leakage of fluid in the measuring tube 1 from the gap between the second electrode 3 and the pinhole camera 10 is prevented.
As shown in fig. 2, the fixing mechanism 5 includes a bushing 16, a gasket 17, an electrode soldering lug 18 and a nut 19, the bushing 16 is arranged between the first electrode 2 and the side wall of the measuring tube 1, one end of the bushing 16 extends out of the measuring tube 1, the bushing 16 is of a cylindrical structure, an inner ring is in contact with the first electrode 2, an outer ring is in contact with the measuring tube 1 and is used for insulating the first electrode 2 from the measuring tube 1, the gasket 17 is sleeved at one end of the first electrode 2 extending out of the measuring tube 1 and is used for protecting the electrode soldering lug 18, the electrode soldering lug 18 is arranged at one end of the gasket 17 far away from the bushing 16 and is sleeved on the first electrode 2 and is used for being electrified with the first electrode 2, the nut 19 is arranged at one end of the electrode soldering lug 18 far away from the gasket 17, and the nut 19 is screwed on the first electrode 2 and is used for.
As shown in fig. 3, the fixing mechanism 5 includes a bushing 16, a gasket 17, an electrode soldering lug 18, a nut 19, the bushing 16 is arranged between the second electrode 3 and the side wall of the measuring tube 1, one end of the bushing 16 extends out of the measuring tube 1, the bushing 16 is of a cylindrical structure, the inner ring is in contact with the second electrode 3, the outer ring is in contact with the measuring tube 1, and is used for insulating the second electrode 3 from the measuring tube 1, the gasket 17 is sleeved at the end of the second electrode 3 extending out of the measuring tube 1, the gasket 17 is used for protecting the electrode soldering lug 18, the end of the gasket 17 far away from the bushing 16 is provided with the electrode soldering lug 18, the electrode soldering lug 18 is sleeved on the second electrode 3 and is used for electrifying the second electrode 3, the end of the electrode soldering lug 18 far away from the gasket 17 is provided with the nut 19, and the nut 19 is screwed on the second.
Referring to fig. 2-3, a knife cone double-sealing ring groove 20 is arranged at one end of the first electrode 2 and the second electrode 3, which are located at the measuring tube 1, and the knife cone double-sealing ring groove 20 is used for sealing the first electrode 2, the second electrode 3 and the measuring tube 1 to prevent fluid leakage.
The utility model discloses a theory of operation: electromagnetic flowmeter during operation, No. 2 electrodes and No. two electrodes 3 are through the telecommunications transmission and the electrically conductive fluid circular telegram of electrode soldering lug 18, electrically conductive fluid measures the liquid flow in surveying buret 1 through the electromotive force that additional magnetic field is inducted, simultaneously LED lamp 6 shines surveys buret 1 inside, at survey buret 1 inside light source that provides, pinhole camera 10 camera end is located survey buret 1 inside, will survey the inside real-time condition imaging transmission of buret 1 to the outside, conveniently look over the condition in surveying buret 1 artificially, if flowmeter work is unusual, this is like and judges rapidly to cause unusual reason, and then handles rapidly.
It is 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 apparatus 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 apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. Take electromagnetic flowmeter of visual electrode, including surveying buret (1), survey buret (1) and pass through the wire and connect its characterized in that with the converter: survey lateral wall of buret (1) in one side be provided with electrode (2) No. one, the opposite side is provided with electrode (3) No. two in the lateral wall of buret (1), electrode (2) and electrode (3) No. two are hollow, the central axis of surveying buret (1) is passed to the line of electrode (2) and electrode (3) No. two, electrode (2) and electrode (3) No. two inside visual mechanism (4) that are provided with, be provided with fixed establishment (5) between electrode (2), electrode (3) No. two and the buret (1).
2. The electromagnetic flowmeter with visible electrodes of claim 1, characterized in that: the visual mechanism (4) comprises an LED lamp (6), a first pressure rod (7), a first sealing gasket (8), a first gland nut (9), a pinhole camera (10), a second pressure rod (11), a second sealing gasket (12) and a second gland nut (13), wherein the LED lamp (6) is arranged at one end inside the approximate measuring pipe (1) in the first electrode (2), the first pressure rod (7) is arranged in the first electrode (2), the first sealing gasket (8) is arranged between the LED lamp (6) and the first pressure rod (7), the first gland nut (9) is arranged at one end outside the approximate measuring pipe (1) in the first electrode (2), the pinhole camera (10) is arranged at one end inside the approximate measuring pipe (1) in the second electrode (3), the second pressure rod (11) is arranged in the second electrode (3), the second sealing gasket (12) is arranged between the pinhole camera (10) and the second pressure rod (11), and a second compression nut (13) is arranged at one end, close to the outside of the measuring pipe (1), in the second electrode (3).
3. The electromagnetic flowmeter with visible electrodes of claim 2, characterized in that: be provided with O type circle (14) No. one between the inner wall of LED lamp (6) and electrode (2), be provided with O type circle (15) No. two between the inner wall of pinhole camera (10) and electrode (3) No. two.
4. The electromagnetic flowmeter with visible electrodes of claim 1, characterized in that: fixed establishment (5) are including bush (16), packing ring (17), electrode soldering lug (18), nut (19), be provided with bush (16) between the lateral wall of a electrode (2) and survey buret (1), outside surveying buret (1) is stretched out to bush (16) one end, No. one electrode (2) stretch out survey buret (1) outer one end and have cup jointed packing ring (17), the one end that bush (16) were kept away from in packing ring (17) is provided with electrode soldering lug (18), the one end that packing ring (17) were kept away from in electrode soldering lug (18) is provided with nut (19).
5. The electromagnetic flowmeter with visible electrodes of claim 1, characterized in that: fixed establishment (5) are including bush (16), packing ring (17), electrode soldering lug (18), nut (19), be provided with bush (16) between the lateral wall of No. two electrodes (3) and survey buret (1), outside surveying buret (1) was stretched out to bush (16) one end, No. two electrodes (3) stretched out the outer one end of surveying buret (1) and have cup jointed packing ring (17), the one end that bush (16) were kept away from in packing ring (17) is provided with electrode soldering lug (18), the one end that packing ring (17) were kept away from in electrode soldering lug (18) is provided with nut (19).
6. The electromagnetic flowmeter with visible electrodes of claim 1, characterized in that: one end of the first electrode (2) and the second electrode (3) which are positioned on the measuring pipe (1) is provided with a knife cone double-sealing ring groove (20).
CN202022421157.5U 2020-10-27 2020-10-27 Electromagnetic flowmeter with visible electrode Active CN213274391U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022421157.5U CN213274391U (en) 2020-10-27 2020-10-27 Electromagnetic flowmeter with visible electrode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022421157.5U CN213274391U (en) 2020-10-27 2020-10-27 Electromagnetic flowmeter with visible electrode

Publications (1)

Publication Number Publication Date
CN213274391U true CN213274391U (en) 2021-05-25

Family

ID=75951365

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022421157.5U Active CN213274391U (en) 2020-10-27 2020-10-27 Electromagnetic flowmeter with visible electrode

Country Status (1)

Country Link
CN (1) CN213274391U (en)

Similar Documents

Publication Publication Date Title
CN105509838A (en) Throw-in type sensor
CN209166542U (en) A kind of flanged joint type electromagnetic flowmeter
CN213274391U (en) Electromagnetic flowmeter with visible electrode
CN210375302U (en) Differential pressure type accumulator liquid level meter
CN209727178U (en) A kind of undergauge type electromagnetism water meter
CN210221163U (en) Electrode sealing structure of electromagnetic flowmeter
CN210485306U (en) Pipeline oil leakage detection assembly
CN110411523A (en) A kind of high-voltage electromagnetic flow meter electrode packaging system
CN213688784U (en) Corrosion-resistant pressure measurement core
CN213274390U (en) Electromagnetic flowmeter for measuring non-full pipe of sensor
CN211652656U (en) PH glass electrode stainless steel plug-in support
CN212960152U (en) Balance valve body
US11860013B2 (en) Magnetically inductive flowmeter having electrode with pressure measuring transducer
CN218298114U (en) Portable pH value detector
CN212843848U (en) High-precision liquid level transmitter
CN220542181U (en) Low-cost large-thread capacitive liquid level sensor
CN211452464U (en) Electromagnetic flowmeter
CN206132172U (en) Digit type oil level measuring device
CN213148192U (en) Pressure transmitter integrated with pressure chip
CN208458894U (en) Transformer temperature detection device
CN213172594U (en) Cathode protection potential detection device
CN217179706U (en) Steel ruler water level and sedimentation dual-purpose instrument
CN218724518U (en) Water level meter with suspension device
CN211978142U (en) Accurate temperature-detecting device of current transmission type
CN208818293U (en) A kind of more corrosion resistant called putting-into-type liquid level meter

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant