CN113484803A - Connecting line detection device of flow meter controller - Google Patents
Connecting line detection device of flow meter controller Download PDFInfo
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- CN113484803A CN113484803A CN202110596202.7A CN202110596202A CN113484803A CN 113484803 A CN113484803 A CN 113484803A CN 202110596202 A CN202110596202 A CN 202110596202A CN 113484803 A CN113484803 A CN 113484803A
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- 238000001514 detection method Methods 0.000 title claims abstract description 48
- 238000000926 separation method Methods 0.000 claims abstract description 4
- 238000013016 damping Methods 0.000 claims description 26
- 239000000872 buffer Substances 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 238000004880 explosion Methods 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims description 3
- 230000002265 prevention Effects 0.000 abstract description 4
- 230000002159 abnormal effect Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 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
- 230000000149 penetrating effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
- G01R31/67—Testing the correctness of wire connections in electric apparatus or circuits
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
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- Measuring Volume Flow (AREA)
Abstract
The invention relates to the technical field of gas flow statistics, and discloses a connecting line detection device of a flow meter controller, which comprises a device main body, wherein a microcontroller is arranged on the front surface of the device main body, a display screen and a control key are arranged on the front surface of the microcontroller, a buzzer is arranged on the front surface of the device main body, a red light indicator lamp and a green light indicator lamp are arranged at the top of the device main body, through holes are respectively formed in two ends of the device main body, connecting leads are arranged in the through holes and comprise an OUTPUT end lead and an INPUT end lead, a separation rod is arranged in the device main body, an explosion-proof net is wound on the surface of each connecting lead, and a current signal detection device is arranged in the device main body. This line detection device of flow meter controller, structural function is various, can not only detect the wire between flow meter controller and the flowmeter in real time, still has potential safety hazard alarming function to and self fire prevention explosion-proof nature is good, and the safety in utilization improves greatly.
Description
Technical Field
The invention relates to the technical field of gas flow statistics, in particular to a connection detection device of a flow meter controller.
Background
At present, data interaction is carried out between a gas flowmeter controller and a flowmeter through a connecting line, if the connecting line between the gas flowmeter controller and the flowmeter is cut off, data of the flowmeter cannot be transmitted to the gas flowmeter controller, metering cannot be completed, and serious hidden danger exists.
The prior art has the following defects and shortcomings:
the device capable of specially detecting the wire connection between the gas flowmeter controller and the flowmeter does not exist in the prior art, the structure and the function of some detection devices on the market are simple, the detection mode is single, the detection precision is low, and more potential safety hazards exist.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a connecting line detection device of a flow meter controller, which can solve the problems that no device capable of specially detecting a connecting line of a conducting wire between a gas flow meter controller and a flow meter exists in the prior art, and some detection devices on the market at present have simpler structural functions, single detection mode, low detection accuracy and more potential safety hazards; the online detection device for the flowmeter controller has various structural functions, can detect the conducting wire between the flowmeter controller and the flowmeter in real time, has a potential safety hazard alarm function, has good self fire and explosion resistance, greatly improves the use safety, and effectively solves the problems in the prior art.
In order to achieve the purpose of the connection detection device of the flowmeter controller, the invention provides the following technical scheme: a connecting line detection device of a flow meter controller comprises a device main body, wherein a microcontroller is arranged on the front side of the device main body, a display screen and a control key are arranged on the front side of the microcontroller, a buzzer is arranged on the front side of the device main body, a red light indicator lamp and a green light indicator lamp are arranged at the top of the device main body, through holes are respectively arranged at two ends of the device main body, connecting wires are arranged in the through holes and comprise an OUTPUT end wire and an INPUT end wire, a separation rod is arranged in the device main body, an explosion-proof net is wound on the surface of the connecting wires, a current signal detection device is arranged in the device main body, the current signal detection device and the connecting wires are provided with wires, a spring is arranged in a shell of the device main body, one end of the spring is connected with a connecting rod, one end of the connecting rod is connected with a buffer board, buffer board one end is connected with the connecting rod, connecting rod one end is connected with the fixed block, fixed block one end is connected with the damping rod, the damping rod periphery is provided with damping spring.
Preferably, the microcontroller is fixedly installed on the front face of the device main body through a bolt, the microcontroller is electrically connected with an external power supply through a wire, and the display screen and the control key are respectively electrically connected with the microcontroller through wires.
Preferably, the buzzers are symmetrically distributed on two sides of the microcontroller, and the buzzers are electrically connected with the microcontroller through conducting wires.
Preferably, red light pilot lamp, green light pilot lamp pass through bolt fixed mounting at device main part top, red light pilot lamp, green light pilot lamp pass through wire and microcontroller electric connection respectively.
Preferably, the explosion-proof net is made of an insulating material, and the explosion-proof net is respectively wrapped and wound on the surfaces of the OUTPUT end lead and the INPUT end lead.
Preferably, the current signal detection device is fixedly installed inside the device main body through a bolt, the current signal detection device is electrically connected with the microcontroller through a conducting wire, and the current signal detection device is electrically connected with an OUTPUT end conducting wire and an INPUT end conducting wire through conducting wires respectively.
Preferably, a groove with the inner surface size matched with the outer size of the spring is formed in the device main body shell, the spring is fixedly installed in the groove of the device main body, and one end of the spring is fixedly connected with the connecting rod.
Preferably, fixed block fixed mounting is at device main part shells inner wall, fixed block one end fixedly connected with damping rod, damping spring spiral is around setting up in the damping rod periphery.
Preferably, the inner wall of the device body is uniformly coated with a fireproof coating.
Compared with the prior art, the invention provides a connection detection device of a flow meter controller, which has the following beneficial effects:
1. this line detection device of flowmeter controller, fixed mounting is on the line between gas flowmeter controller and flowmeter, connecting wire is inside the device main part through running through the grafting, through the inside current signal detection device that is provided with of device main part, current signal detection device pass through the wire respectively with connecting wire's OUTPUT end wire and INPUT end wire electric connection, judge through current signal detection device to connecting wire's INPUT signal whether the wire between flowmeter and the flowmeter controller is in normal condition: if the INPUT signal of the lead at the INPUT end is low level, the lead is in a normal state; if the INPUT signal of the lead at the INPUT end is high level, the lead is in an abnormal state, such as the situations of lead fracture, short circuit and the like;
2. the microcontroller is arranged on the front side of the device body, a display screen is arranged on the front side of the microcontroller, level signal values can be visually displayed and can be conveniently checked by a user, the buzzer is arranged on the front side of the device body, a buzzing prompt can be sent through the buzzer, abnormal conditions can be timely informed to the user, meanwhile, a red light indicator lamp and a green light indicator lamp are arranged on the top of the device body, when the lead is in a normal state, the green light indicator lamp is turned on to indicate that the state is normal, when the lead is in an abnormal state, the red light indicator lamp is turned on to indicate that the lead is in an abnormal state, prompt can be visually made for the user, the user can conveniently find the abnormality in time, hidden dangers can be timely checked, and the use safety is improved;
3. the connection line detection device of the flow meter controller is characterized in that a spring is arranged on the inner wall of a device main body, one end of the spring is connected with a buffer plate through a connecting rod, one side of the buffer plate is provided with a connecting rod, one end of the connecting rod is fixedly connected with a fixed block, one end of the fixed block is connected with a damping rod and a damping spring, when the device main body explodes due to short circuit of a lead, the impact force is buffered through elastic expansion and contraction of the spring arranged on one side of the buffer plate, a part of impact force is absorbed through the buffer plate, the impact caused by explosion is reduced, and the explosion-proof purpose is achieved;
4. this line detection device of flowmeter controller has the fire prevention coating through the even coating of device main part inner wall, and connecting wire outward appearance winding is provided with explosion-proof net, prevents through setting up fire prevention coating and explosion-proof net that connecting wire arouses explosion or burning such as external gas, combustible substance because of the spark that reasons such as defect, static produced, produces destruction to wire on one side, improves fire prevention and explosion-proof security performance.
Drawings
FIG. 1 is a schematic view of the installation position of the connection detecting device according to the present invention;
FIG. 2 is a schematic perspective view of a connection detecting device according to the present invention;
FIG. 3 is a schematic view of the overall structure of the connection detecting apparatus according to the present invention;
FIG. 4 is a schematic diagram of an internal partial structure of the connection detecting apparatus according to the present invention;
FIG. 5 is a partial structural schematic diagram of the present invention.
In the figure: 1. a device main body; 2. a microcontroller; 3. a display screen; 4. a control key; 5. a buzzer; 6. a red light indicator light; 7. a green light indicator light; 8. a through hole; 9. connecting a lead; 91. an OUTPUT terminal lead; 92. an INPUT terminal lead; 10. a spacer bar; 11. an explosion-proof net; 12. a current signal detection device; 13. a wire; 14. a spring; 15. a connecting rod; 16. a buffer plate; 17. a connecting rod; 18. a fixed block; 19. a damper rod; 20. a damping spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, a connection line detection device for a flow meter controller comprises a device main body 1, a microcontroller 2 is arranged on the front surface of the device main body 1, a display screen 3 and a control key 4 are arranged on the front surface of the microcontroller 2, a buzzer 5 is arranged on the front surface of the device main body 1, a red light indicator lamp 6 and a green light indicator lamp 7 are arranged on the top of the device main body 1, through holes 8 are respectively arranged at two ends of the device main body 1, a connecting wire 9 is arranged inside the through holes 8, the connecting wire 9 comprises an OUTPUT end wire 91 and an INPUT end wire 92, a separation rod 10 is arranged inside the device main body 1, an explosion-proof net 11 is wound on the surface of the connecting wire 9, a current signal detection device 12 is arranged inside the device main body 1, a wire 13 is arranged between the current signal detection device 12 and the connecting wire 9, a spring 14 is arranged inside a casing of the device main body 1, one end of the spring 14 is connected with a connecting rod 15, connecting rod 15 one end is connected with buffer board 16, and buffer board 16 one end is connected with connecting rod 17, and connecting rod 17 one end is connected with fixed block 18, and fixed block 18 one end is connected with damping rod 19, and damping rod 19 periphery is provided with damping spring 20.
In conclusion, the microcontroller 2 is fixedly installed on the front face of the device main body 1 through a bolt, the microcontroller 2 is electrically connected with an external power supply through a wire, the display screen 3 and the control key 4 are respectively electrically connected with the microcontroller 2 through wires, the electronic components of the device are intelligently controlled through the microcontroller 2, the display screen 3 is used for displaying a detection wire level signal value parameter, and the control key 4 is used for adjusting and controlling the microcontroller 2; the buzzers 5 are symmetrically distributed on two sides of the microcontroller 2, the buzzers 5 are electrically connected with the microcontroller 2 through conducting wires, and when the buzzers 5 are used in an abnormal state, buzzers can give out buzzing prompts through the buzzers 5 to inform users of the abnormal condition in time; the red light indicator lamp 6 and the green light indicator lamp 7 are fixedly installed on the top of the device main body 1 through bolts, the red light indicator lamp 6 and the green light indicator lamp 7 are respectively electrically connected with the microcontroller 2 through leads, the red light indicator lamp 6 and the green light indicator lamp 7 are arranged on the top of the device main body 1, when the leads are in a normal state, the green light indicator lamp 7 is turned on to indicate that the state is normal, when the leads are in an abnormal state, the red light indicator lamp 6 is turned on to indicate that the leads are in an abnormal state, and a user can be visually prompted; the explosion-proof net 11 is made of an insulating material, and the explosion-proof net 11 is respectively wrapped and wound on the surfaces of the OUTPUT end lead 91 and the INPUT end lead 92, so that the explosion-proof safety performance is improved; the current signal detection device 12 is fixedly installed inside the device main body 1 through a bolt, the current signal detection device 12 is electrically connected with the microcontroller 2 through a lead, the current signal detection device 12 is electrically connected with an OUTPUT end lead 91 and an INPUT end lead 92 through leads 13 respectively, and whether the lead between the flowmeter and the flowmeter controller is in a normal state is judged through an INPUT signal of the current signal detection device 12 to a connecting lead 9; a groove with the inner surface size matched with the outer surface size of the spring 14 is formed in the shell of the device main body 1, the spring 14 is fixedly installed in the groove of the device main body 1, one end of the spring 14 is fixedly connected with the connecting rod 15, and when the device main body 1 explodes due to short circuit of a lead, the impact force is buffered through elastic expansion and contraction of the spring 14 arranged on one side of the buffer plate 16; the fixed block 18 is fixedly arranged on the inner wall of the shell of the device main body 1, one end of the fixed block 18 is fixedly connected with a damping rod 19, and a damping spring 20 is spirally arranged on the periphery of the damping rod 19 in a surrounding mode and plays a certain damping role; the inner wall of the device main body 1 is uniformly coated with a fireproof coating, so that the connecting wire 9 is prevented from being exploded or burnt by external gas, combustible substances and the like due to sparks generated by defects, static electricity and the like, and the wires beside are damaged, thereby improving the fireproof and explosion-proof safety performance.
The working and using process and the installation method of the invention are that, when the connection detection device of the flowmeter controller is used, the connection detection device is fixedly installed on a connection line between the gas flowmeter controller and the flowmeter, the connecting lead 9 is inserted in the device main body 1 by penetrating, the device main body 1 is internally provided with the current signal detection device 12, the current signal detection device 12 is respectively and electrically connected with an OUTPUT end lead 91 and an INPUT end lead 92 of the connecting lead 9 by a lead 13, and whether the lead between the flowmeter and the flowmeter controller is in a normal state is judged by the INPUT signal of the current signal detection device 12 to the connecting lead 9: if the INPUT signal to the INPUT terminal wire 92 is at a low level, the wire is in a normal state; if the INPUT signal of the INPUT end wire 92 is at a high level, the wire is in an abnormal state, such as wire breakage, short circuit, etc.; the microcontroller 2 is arranged on the front side of the device body 1, the display screen 3 is arranged on the front side of the microcontroller 2, the level signal value can be visually displayed, the device is convenient for a user to check, the buzzer 5 is arranged on the front side of the device body 1, a buzzing prompt can be sent through the buzzer 5, the abnormal situation can be informed to the user in time, meanwhile, the red light indicator lamp 6 and the green light indicator lamp 7 are arranged on the top of the device body 1, when the lead is in a normal state, the green light indicator lamp 7 is turned on to indicate that the state is normal, when the lead is in an abnormal state, the red light indicator lamp 6 is turned on to indicate that the lead is in the abnormal state, the prompt can be visually made for the user, the user can find the abnormality in time, troubleshoot hidden dangers in time, and the use safety is improved; the device comprises a device body 1, a spring 14, a buffer plate 16, a connecting rod 17, a fixed block 18, a damping rod 19 and a damping spring 20, wherein the spring 14 is arranged on the inner wall of the device body 1, one end of the spring 14 is connected with the buffer plate 16 through a connecting rod 15, one side of the buffer plate 16 is provided with the connecting rod 17, one end of the connecting rod 17 is fixedly connected with the fixed block 18, one end of the fixed block 18 is connected with the damping rod 19 and the damping spring 20, when the device body 1 explodes due to short circuit of a lead, the elastic expansion of the spring 14 arranged on one side of the buffer plate 16 buffers the impact force, the buffer plate 16 absorbs a part of the impact force, the impact caused by explosion is reduced, and the explosion-proof purpose is achieved; the fire-proof coating is uniformly coated on the inner wall of the device main body 1, the explosion-proof net 11 is wound on the outer surface of the connecting wire 9, the connecting wire 9 is prevented from being exploded or burnt by external gas, combustible substances and the like due to sparks generated by defects, static electricity and the like by the aid of the fire-proof coating and the explosion-proof net 11, damage is caused to wires on one side, and fire-proof and explosion-proof safety performance is improved.
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.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A connecting line detection device of a flowmeter controller is characterized in that: comprises a device main body (1), the device main body (1) is positively provided with a microcontroller (2), the microcontroller (2) is positively provided with a display screen (3) and a control key (4), the device main body (1) is positively provided with a buzzer (5), the top of the device main body (1) is provided with a red light indicator lamp (6) and a green light indicator lamp (7), two ends of the device main body (1) are respectively provided with a through hole (8), a connecting wire (9) is arranged in the through hole (8), the connecting wire (9) comprises an OUTPUT end wire (91) and an INPUT end wire (92), a separation rod (10) is arranged in the device main body (1), the surface of the connecting wire (9) is wound with an explosion-proof net (11), a current signal detection device (12) is arranged in the device main body (1), the current signal detection device (12) and the connecting wire (9) are provided with a wire (13), device main part (1) casing is inside to be provided with spring (14), spring (14) one end is connected with connecting rod (15), connecting rod (15) one end is connected with buffer board (16), buffer board (16) one end is connected with connecting rod (17), connecting rod (17) one end is connected with fixed block (18), fixed block (18) one end is connected with damping rod (19), damping rod (19) periphery is provided with damping spring (20).
2. The inline sensing apparatus of a flow meter controller according to claim 1, wherein: microcontroller (2) are openly at device main part (1) through bolt fixed mounting, microcontroller (2) pass through wire and external power source electric connection, display screen (3), control key (4) are respectively through wire and microcontroller (2) electric connection.
3. The inline sensing apparatus of a flow meter controller according to claim 1, wherein: the buzzer (5) is symmetrically distributed on two sides of the microcontroller (2), and the buzzer (5) is electrically connected with the microcontroller (2) through a lead.
4. The inline sensing apparatus of a flow meter controller according to claim 1, wherein: red light pilot lamp (6), green light pilot lamp (7) pass through bolt fixed mounting at device main part (1) top, red light pilot lamp (6), green light pilot lamp (7) are respectively through wire and microcontroller (2) electric connection.
5. The inline sensing apparatus of a flow meter controller according to claim 1, wherein: the anti-explosion net (11) is made of insulating materials, and the anti-explosion net (11) is respectively wrapped and wound on the surfaces of an OUTPUT end lead (91) and an INPUT end lead (92).
6. The inline sensing apparatus of a flow meter controller according to claim 1, wherein: current signal detection device (12) pass through bolt fixed mounting inside device main part (1), current signal detection device (12) pass through wire and microcontroller (2) electric connection, current signal detection device (12) are respectively through wire (13) and OUTPUT end wire (91), INPUT end wire (92) electric connection.
7. The inline sensing apparatus of a flow meter controller according to claim 1, wherein: a groove with the inner surface size matched with the outer surface size of the spring (14) is formed in the shell of the device main body (1), the spring (14) is fixedly installed in the groove of the device main body (1), and one end of the spring (14) is fixedly connected with the connecting rod (15).
8. The inline sensing apparatus of a flow meter controller according to claim 1, wherein: fixed block (18) fixed mounting is in device main part (1) shells inner wall, fixed block (18) one end fixedly connected with damping rod (19), damping spring (20) spiral is encircleed and is set up in damping rod (19) periphery.
9. The inline sensing apparatus of a flow meter controller according to claim 1, wherein: the inner wall of the device main body (1) is uniformly coated with a fireproof coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110596202.7A CN113484803A (en) | 2021-05-30 | 2021-05-30 | Connecting line detection device of flow meter controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110596202.7A CN113484803A (en) | 2021-05-30 | 2021-05-30 | Connecting line detection device of flow meter controller |
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| CN113484803A true CN113484803A (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110596202.7A Pending CN113484803A (en) | 2021-05-30 | 2021-05-30 | Connecting line detection device of flow meter controller |
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| US20090256548A1 (en) * | 2008-04-10 | 2009-10-15 | Gdf Suez | Electronic identification device and method |
| CN101600945A (en) * | 2006-12-28 | 2009-12-09 | 罗斯蒙德公司 | The terminal leakage monitoring that is used for field apparatus |
| JP2015158445A (en) * | 2014-02-25 | 2015-09-03 | 横河電機株式会社 | Electromagnetic flowmeter, erroneous wiring detection device and erroneous wiring detection method |
| CN109444641A (en) * | 2018-12-18 | 2019-03-08 | 成都前锋电子仪器有限责任公司 | A kind of line detection device of flow meter controller |
| CN111856327A (en) * | 2020-08-24 | 2020-10-30 | 海南电网有限责任公司琼中供电局 | Electric leakage alarm monitoring device |
| CN212031608U (en) * | 2019-12-02 | 2020-11-27 | 沃威沃水技术(中国)有限公司 | Cable detection device |
| CN212134923U (en) * | 2020-04-20 | 2020-12-11 | 中铁二十二局集团有限公司 | Fault detection device |
| CN213275805U (en) * | 2020-09-29 | 2021-05-25 | 江西陞智科技有限公司 | Air conditioner power supply detection device |
-
2021
- 2021-05-30 CN CN202110596202.7A patent/CN113484803A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101600945A (en) * | 2006-12-28 | 2009-12-09 | 罗斯蒙德公司 | The terminal leakage monitoring that is used for field apparatus |
| US20090256548A1 (en) * | 2008-04-10 | 2009-10-15 | Gdf Suez | Electronic identification device and method |
| JP2015158445A (en) * | 2014-02-25 | 2015-09-03 | 横河電機株式会社 | Electromagnetic flowmeter, erroneous wiring detection device and erroneous wiring detection method |
| CN109444641A (en) * | 2018-12-18 | 2019-03-08 | 成都前锋电子仪器有限责任公司 | A kind of line detection device of flow meter controller |
| CN212031608U (en) * | 2019-12-02 | 2020-11-27 | 沃威沃水技术(中国)有限公司 | Cable detection device |
| CN212134923U (en) * | 2020-04-20 | 2020-12-11 | 中铁二十二局集团有限公司 | Fault detection device |
| CN111856327A (en) * | 2020-08-24 | 2020-10-30 | 海南电网有限责任公司琼中供电局 | Electric leakage alarm monitoring device |
| CN213275805U (en) * | 2020-09-29 | 2021-05-25 | 江西陞智科技有限公司 | Air conditioner power supply detection device |
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