CN114062999B - Auxiliary device for calibrating ammeter - Google Patents
Auxiliary device for calibrating ammeter Download PDFInfo
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- CN114062999B CN114062999B CN202111336219.5A CN202111336219A CN114062999B CN 114062999 B CN114062999 B CN 114062999B CN 202111336219 A CN202111336219 A CN 202111336219A CN 114062999 B CN114062999 B CN 114062999B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- General Physics & Mathematics (AREA)
- Measurement Of Radiation (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses an auxiliary device for calibrating an ammeter, which relates to the technical field of clamp-on ammeters and comprises a base plate, handles are arranged at two ends of the base plate, a right-angle table is arranged in the middle of the upper end face of the base plate, an ammeter fixing mechanism is arranged at the upper end of the right-angle table, a related circuit component for calibrating the ammeter is arranged at one side of the upper end face of the base plate, a wire supporting mechanism for supporting wires of the related circuit component is arranged on the side face of the right-angle table, and the related circuit component comprises a power supply, a knife switch, a resistor and a plurality of connecting wires. According to the invention, the related circuit component of the calibration ammeter is arranged on the base plate, the ammeter fixing mechanism for fixing the clamp ammeter is arranged on the right-angle table, the related circuit component is connected during calibration, the clamp end of the clamp ammeter is sleeved on the connecting lead, and the calibration operation is performed after the comparison between the current detected by the ammeter and the output current of the power supply.
Description
Technical Field
The invention belongs to the technical field of clamp-on ampere meters, and particularly relates to an auxiliary device for calibrating an ampere meter.
Background
The clamp ammeter is one kind of ammeter and is used in measuring the current value in circuit, and is called as current clamp for short. In electrical and electronic engineering, current clamps (or current probes) are two openable clamp probes for clamping an electrical conductor around an electrical device, and the probes do not need to be in contact with the conductive part of the device, i.e. do not need to disconnect the device wire for probe insertion, to measure the properties of the current at the conductor.
In the prior art, a plurality of circuits are required to be arranged in the calibration process of the clamp ammeter, and devices in the circuits, a tested wire and the clamp ammeter are not fixed, so that the error exists in the current value measured by the clamp ammeter, the operation is troublesome, and the calibration accuracy of the ammeter is affected; meanwhile, the conventional calibrating device cannot know the change relation between the detection current of the clamp ammeter and the angle of the detection lead passing through the clamp end, and therefore an auxiliary device for calibrating the ammeter is provided.
Disclosure of Invention
The invention aims to solve the problem that the conventional auxiliary device for calibrating an ammeter influences the accuracy of calibration of the ammeter, and provides the auxiliary device for calibrating the ammeter.
The invention is realized by the following technical scheme: the utility model provides an auxiliary device that calibration ampere meter was used, includes the bed plate, the both ends of bed plate are equipped with the handle, be equipped with the right angle platform in the middle of the up end of bed plate, the upper end of right angle platform is equipped with ampere meter fixed establishment, up end one side of bed plate is equipped with the relevant circuit subassembly that is used for the calibration ampere meter, be equipped with the wire supporting mechanism who supports relevant circuit part wire on the side of right angle platform.
The related circuit component comprises a power supply, a knife switch piece, a resistor piece and a plurality of connecting wires, wherein the power supply, the knife switch piece and the resistor piece are all arranged on the base plate, and the power supply is connected with the knife switch piece and the resistor piece into a closed loop through the plurality of connecting wires; the resistance member includes a plurality of resistors of fixed resistance values.
Preferably, the wire supporting mechanism comprises a rotating assembly arranged on the side surface of the right-angle table, the upper end and the lower end of the rotating assembly are respectively connected with a supporting rod, the end parts of the two connecting rods are connected with a cross rod through a fixing sleeve, and the end parts of the cross rods are provided with a clamping mechanism for fixing the tested connecting wires.
Preferably, the clamping mechanism comprises a fixing plate and a clamping plate, one end of the fixing plate is fixedly connected to the end portion of the cross rod, the clamping plate is arranged on one side of the fixing plate, connecting protrusions are arranged on opposite faces of the fixing plate and the clamping plate, the connecting protrusions on the fixing plate and the clamping plate are connected in a rotating mode through a rotating shaft, and torsion springs are arranged on the rotating shaft.
Preferably, the arc-shaped groove is arranged in the middle of one side of the fixed plate, which is close to the clamping plate, the middle of the clamping plate is in an outwards-protruding arc shape, and the opposite surfaces of the fixed plate and the clamping plate are subjected to insulation treatment, so that the clamping of connecting wires is facilitated.
Preferably, the rotating assembly comprises a rotating shell, the rotating shell is of a cylindrical hollow structure, one side of the rotating shell is provided with a connecting shaft, one end of the connecting shaft is fixedly connected to the side face of the right-angle table, one end of the connecting shaft is connected with a left chuck, the rotating shell is rotatably sleeved at the left chuck end of the connecting shaft, a right chuck matched with the left chuck is arranged at a connecting port of the connecting shaft, tooth grooves are formed in opposite faces of the left chuck and the right chuck, a spring is arranged in an inner cavity of the rotating shell, and two ends of the spring respectively support against the left chuck and the inner wall of the rotating shell.
Preferably, the outer side wall of the rotary shell is provided with a rotary button, so that a user can conveniently rotate the rotary shell.
Preferably, the side of the right-angle table is also provided with an angle measurer for measuring the rotation angle of the support rod, the angle measurer is arc-shaped, the outer surface of the angle measurer is provided with angle scale marks, the rotating shell is provided with angle indicating needles, and the direction of the indicating needles is parallel to the direction of the support rod.
Preferably, the upper end support rod of the rotary shell is provided with a laser lamp, and the laser lamp irradiates light on the scale marks on the angle scale marks in a working state, so that the rotation angle of the support rod can be accurately measured.
Preferably, the laser lamp is an LED laser infrared lamp.
Preferably, the ammeter fixed establishment includes loading board and slider, the up end of right angle platform is equipped with the spout, slider sliding connection is in the spout, the both ends of slider are equipped with the fixed ear, the fixed ear passes through the fixed screw with the slider fixed in the spout, the upper end fixed connection of lower extreme and slider of loading board, the up end both sides of loading board are equipped with the elasticity curb plate, the elasticity curb plate is the U-shaped of inversion, a lateral wall and the loading board of elasticity curb plate are connected, and the other lateral wall of elasticity curb plate is unsettled, during the use, clamps the pincers-shaped ammeter between two elasticity boards, presss from both sides tightly pincers-shaped ammeter through the unsettled wall of two elasticity boards.
Compared with the prior art, the invention has the following advantages:
1. according to the invention, the related circuit component of the calibration ammeter is arranged on the base plate, the ammeter fixing mechanism for fixing the clamp ammeter is arranged on the right-angle table, the related circuit component is connected during calibration, the clamp end of the clamp ammeter is sleeved on the connecting wire, and the calibration operation is performed after the comparison between the current detected by the ammeter and the output current of the power supply.
2. According to the invention, the current value on the connecting lead is changed by connecting a plurality of resistors in series, repeated calibration is carried out for a plurality of times, and the accuracy of calibration of the clamp ammeter is increased.
3. According to the invention, the wire supporting mechanism capable of rotating the angle is arranged on the side face of the right angle plate, and the ammeter fixing mechanism capable of transversely fixing one end is arranged at the upper end of the right angle table, so that the angles of the detection wires and the clamp ammeter can be changed during calibration, the angle relation between the detection current and the detection wires of the clamp ammeter is known, and the clamp ammeter is convenient and correct to use.
4. According to the invention, the left chuck and the right chuck are separated by pressing the rotary shell, the rotary button is rotated, the rotary shell drives the upper supporting rod and the lower supporting rod to rotate, the pressed rotary shell is loosened, the left chuck and the right chuck are clamped again under the action of the spring, the rotary shell is fixed, the angle of connecting wires is changed, and the supporting rod is high in stability.
5. According to the invention, the angle measurer is arranged on the side surface of the right-angle table, and the indication needle and the laser lamp are used for indicating the scales on the angle measurer, so that the rotation angle of the connecting wire can be clearly and accurately observed.
Drawings
FIG. 1 is a schematic diagram of an auxiliary device for calibrating an ammeter;
FIG. 2 is a schematic view showing the structure of an auxiliary device for calibrating an ammeter in an operating state;
FIG. 3 is a schematic diagram of a wire support mechanism in an auxiliary device for calibrating an ammeter;
FIG. 4 is an enlarged schematic view of the structure of FIG. 3A;
FIG. 5 is a schematic diagram of the structure of a rotating assembly in an auxiliary device for calibrating an ammeter;
fig. 6 is a schematic structural view of an ammeter fixing mechanism in an auxiliary device for calibrating an ammeter.
Reference numerals in the drawings: 1. a base plate; 2. a handle; 3. a right-angle table; 4. an ammeter fixing mechanism; 41. a carrying plate; 42. an elastic side plate; 43. a slide block; 44. a set screw; 5. a chute; 6. a wire support mechanism; 61. a rotating assembly; 611. rotating the housing; 612. a rotation knob; 613. a left chuck; 614. a connecting shaft; 615. a right chuck; 616. a spring; 62. a support rod; 63. a fixed sleeve; 64. a cross bar; 65. a clamping mechanism; 651. a fixing plate; 652. a clamping plate; 653. a connecting protrusion; 654. a rotating shaft; 66. an indicator needle; 67. a laser lamp; 7. a knife switch member; 8. a power supply; 9. a resistive member; 10. an angle measurer; 11. a clamp ammeter; 12. and connecting wires.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1-4, an auxiliary device for calibrating an ammeter comprises a base plate 1, handles 2 are arranged at two ends of the base plate 1, a right-angle table 3 is arranged in the middle of the upper end face of the base plate 1, an ammeter fixing mechanism 4 is arranged at the upper end of the right-angle table 3, a related circuit component for calibrating the ammeter is arranged at one side of the upper end face of the base plate 1, and a lead supporting mechanism 6 for supporting leads of a related circuit part is arranged on the side face of the right-angle table 3; the related circuit components comprise a power supply 8, a knife switch 7, a resistor 9 and a plurality of connecting wires 12, wherein the power supply 8, the knife switch 7 and the resistor 9 are all arranged on the base plate 1, and the power supply 8 is connected with the knife switch 7 and the resistor 9 into a closed loop through the plurality of connecting wires 12; the resistive member 9 includes a plurality of resistors of fixed resistance values.
When in use, the known voltage value is U 0 And a known resistance value R 0 The resistor 9 of the meter is connected in series with the knife 7 through the connecting wire 12, part of the connecting wire 12 is vertically supported by the wire supporting mechanism 6, the clamp ammeter 11 is fixed on the ammeter fixing mechanism 4 of the right-angle table 3, so that the clamp end of the clamp ammeter 11 is vertically sleeved outside the connecting wire 12, and the clamp ammeter 11 measures the connecting wire 12A current value I of (a);
the current on the connecting wire can be calculated by ohm's law: i 0 ＝U 0 /R 0 ；
And then the current values I and I detected by the clamp ammeter 11 0 Comparing to calibrate the clamp ammeter 11; because the components of the related circuits and the clamp ammeter 11 are fixed on the base plate 1, the clamp ammeter 11 is convenient to operate and high in accuracy when being calibrated by only taking out the whole base plate 1 when in use and connecting the circuits and fixing the connecting wires 12 to the supporting rods.
The wire supporting mechanism 6 comprises a rotating assembly 61 arranged on the side surface of the right-angle table 3, the upper end and the lower end of the rotating assembly 61 are respectively connected with a supporting rod 62, the end parts of the two connecting rods are respectively connected with a cross rod 64 through a fixing sleeve 63, and the end parts of the cross rods 64 are provided with a clamping mechanism 65 for fixing the tested connecting wires 12.
The clamping mechanism 65 includes a fixing plate 651 and a clamping plate 652, one end of the fixing plate 651 is fixedly connected to the end portion of the cross bar 64, the clamping plate 652 is disposed on one side of the fixing plate 651, connection protrusions 653 are disposed on opposite faces of the fixing plate 651 and the clamping plate 652, the connection protrusions 653 on the fixing plate 651 and the clamping plate 652 are rotationally connected through a rotating shaft 654, and a torsion spring 616 is disposed on the rotating shaft 654.
An arc-shaped groove is arranged in the middle of one side of the fixed plate 651, which is close to the clamping plate 652, the middle part of the clamping plate 652 is in an arc shape protruding outwards, and the opposite surfaces of the fixed plate 651 and the clamping plate 652 are insulated;
by pressing one end of the clamping plate 652, the clamping end of the clamping plate 652 is tilted, and the connecting wire 12 is placed in the arc-shaped groove, so that the clamping of the connecting wire 12 is facilitated.
Example two
Referring to fig. 5 and 6, in this embodiment, on the basis of the first embodiment, the rotary assembly 61 includes a rotary housing 611, the rotary housing 611 is in a cylindrical hollow structure, a connecting shaft 614 is disposed on one side of the rotary housing 611, one end of the connecting shaft 614 is fixedly connected to a side surface of the right-angle table 3, one end of the connecting shaft 614 is connected to a left chuck 613, the rotary housing 611 is rotatably sleeved at the left chuck 613 end of the connecting shaft 614, a right chuck 615 matched with the left chuck 613 is disposed at a connection port of the connecting shaft 614 on the rotary housing 611, tooth grooves are disposed on opposite surfaces of the left chuck 613 and the right chuck 615, a spring 616 is disposed in an internal cavity of the rotary housing 611, and two ends of the spring 616 respectively support against inner walls of the left chuck 613 and the rotary housing 611.
A rotation knob 612 is provided on the outer sidewall of the rotation housing 611 to facilitate the rotation of the rotation housing 611 by a user.
The side of the right-angle table 3 is also provided with an angle measurer 10 for measuring the rotation angle of the support rod 62, the angle measurer 10 is arc-shaped, the outer surface of the angle measurer 10 is provided with angle scale marks, the rotating shell 611 is provided with an angle indicating needle 66, and the direction of the indicating needle 66 is parallel to the direction of the support rod 62.
The upper end supporting rod 62 of the rotary shell 611 is provided with a laser lamp 67, and when the laser lamp 67 is in a working state, lamplight irradiates on scale marks on the angle scale marks, so that the rotating angle of the supporting rod 62 can be accurately measured. The laser lamp is an LED laser infrared lamp.
The ammeter fixed establishment 4 includes loading board 41 and slider 43, the up end of right angle platform 3 is equipped with spout 5, slider 43 sliding connection is in spout 5, slider 43's both ends are equipped with the fixed ear, the fixed ear passes through fixed screw 44 with slider 43 fixed in spout 5, the lower extreme of loading board 41 and the upper end fixed connection of slider 43, the up end both sides of loading board 41 are equipped with elasticity curb plate 42, elasticity curb plate 42 is the U-shaped of inversion, a lateral wall and the loading board 41 of elasticity curb plate 42 are connected, and the other lateral wall of elasticity curb plate 42 is unsettled, during the use, clamp the pincers-shaped ammeter 11 with pincers-shaped ammeter 11 card between two elasticity boards, the unsettled wall through two elasticity boards presss from both sides tightly.
When the rotary shell 611 is used, the left chuck 613 and the right chuck 615 are separated by pressing the rotary shell 611, the rotary button 612 is rotated, the upper support rod 62 and the lower support rod 62 are driven to rotate by the rotary shell 611, the pressed rotary shell 611 is released, the left chuck 613 and the right chuck 615 are clamped again under the action of the spring 616, the rotary shell 611 is fixed, the angle of the connecting wire 12 is changed, and the stability of the support rod 62 is strong; the rotation angle of the connecting wire 12 can be clearly and accurately observed by arranging the angle measurer 10 on the side surface of the right-angle table 3 and indicating scales on the angle measurer 10 through the indicating needle 66 and the laser lamp 67; meanwhile, the position of the sliding block 43 in the sliding groove 5 is moved, so that the clamp end of the clamp ammeter 11 is always sleeved on the outer side of the connecting wire 12 when the angle of the connecting wire 12 changes, and is not contacted with the connecting wire 12, and the current value on the clamp ammeter 11 is observed, so that the change relation between the detection current of the clamp ammeter 11 and the angle of the detection wire passing through the clamp end is known, and the clamp ammeter 11 is convenient and correct to use.
Working principle: according to the invention, the related circuit components of the calibration ammeter are arranged on the base plate 1, the ammeter fixing mechanism 4 for fixing the clamp ammeter 11 is arranged on the right-angle table 3, the related circuit components are connected during calibration, the clamp end of the clamp ammeter 11 is sleeved on the connecting wire 12, and the calibration operation is performed after the detection current of the ammeter is compared with the output current of the power supply 8, so that the use is convenient and quick. According to the invention, the current value on the connecting wire 12 is changed by connecting a plurality of resistors in series, repeated calibration is carried out for a plurality of times, and the accuracy of calibration of the clamp ammeter 11 is increased; the wire supporting mechanism 6 capable of rotating the angle is arranged on the side face of the right angle plate, the ammeter fixing mechanism 4 capable of transversely fixing one end is arranged at the upper end of the right angle table 3, so that the angles of the detection wires and the clamp ammeter 11 can be changed during calibration, the angle relation between the detection currents of the clamp ammeter 11 and the detection wires is known, and the clamp ammeter 11 is convenient and correct to use; by pressing the rotary shell 611, the left chuck 613 and the right chuck 615 are separated, the rotary button 612 is rotated, the upper support rod 62 and the lower support rod 62 are driven to rotate by the rotary shell 611, the pressed rotary shell 611 is loosened, the left chuck 613 and the right chuck 615 are clamped again under the action of the spring 616, the rotary shell 611 is fixed, the angle of the connecting wire 12 is changed, and the stability of the support rod 62 is strong; by providing the angle measuring instrument 10 on the side surface of the rectangular table 3 and indicating the scale on the angle measuring instrument 10 by the indicating needle 66 and the laser lamp 67, the rotation angle of the connecting wire 12 can be clearly and accurately observed.
While the preferred embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention, and these changes relate to the related art well known to those skilled in the art, which fall within the scope of the present invention.
Many other changes and modifications may be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims.
Claims (6)
1. The utility model provides an auxiliary device that calibration ampere meter was used, includes bed plate (1), the both ends of bed plate (1) are equipped with handle (2), its characterized in that: a right-angle table (3) is arranged in the middle of the upper end face of the base plate (1), an ammeter fixing mechanism (4) is arranged at the upper end of the right-angle table (3), a related circuit component for calibrating an ammeter is arranged on one side of the upper end face of the base plate (1), and a wire supporting mechanism (6) for supporting wires of a related circuit part is arranged on the side face of the right-angle table (3);
the related circuit assembly comprises a power supply (8), a knife switch piece (7), a resistor piece (9) and a plurality of connecting wires (12), wherein the power supply (8), the knife switch piece (7) and the resistor piece (9) are all arranged on the base plate (1), and the power supply (8) is connected with the knife switch piece (7) and the resistor piece (9) into a closed loop through the plurality of connecting wires (12); the resistor (9) comprises a plurality of resistors with fixed resistance values;
the wire supporting mechanism (6) comprises a rotating assembly (61) arranged on the side surface of the right-angle table (3), the upper end and the lower end of the rotating assembly (61) are respectively connected with a supporting rod (62), the end parts of the two supporting rods are connected with a cross rod (64) through a fixing sleeve (63), and the end parts of the cross rods (64) are provided with a clamping mechanism (65) for fixing a tested connecting wire (12);
the clamping mechanism (65) comprises a fixed plate (651) and a clamping plate (652), one end of the fixed plate (651) is fixedly connected to the end portion of the cross rod (64), the clamping plate (652) is arranged on one side of the fixed plate (651), connecting protrusions (653) are arranged on opposite faces of the fixed plate (651) and the clamping plate (652), the connecting protrusions (653) on the fixed plate (651) and the clamping plate (652) are in rotary connection through a rotary shaft (654), and a torsion spring (616) is arranged on the rotary shaft (654);
an arc-shaped groove is arranged in the middle of one side, close to the clamping plate (652), of the fixing plate (651), the middle of the clamping plate (652) is in an arc shape protruding outwards, and opposite surfaces of the fixing plate (651) and the clamping plate (652) are subjected to insulation treatment;
the rotary assembly (61) comprises a rotary shell (611), wherein the rotary shell (611) is of a cylindrical hollow structure, one side of the rotary shell (611) is provided with a connecting shaft (614), and one end of the connecting shaft (614) is fixedly connected to the side surface of the right-angle table (3);
the connecting shaft (614) is located rotary shell (611) one end and is connected with left chuck (613), rotary shell (611) rotates the cover and establishes left chuck (613) end at connecting shaft (614), rotary shell (611) are located connector department that connecting shaft (614) is equipped with right chuck (615) with left chuck (613) matching, all be equipped with the tooth's socket on the opposite face of left chuck (613) and right chuck (615), be equipped with spring (616) in the inside cavity of rotary shell (611), the inner wall of left chuck (613) and rotary shell (611) is propped respectively at the both ends of spring (616).
2. An auxiliary device for calibrating an ammeter according to claim 1, characterized in that a swivel button (612) is provided on the outer side wall of the swivel housing (611).
3. An auxiliary device for calibrating an ammeter according to claim 2, characterized in that an angle measurer (10) for measuring the rotation angle of the supporting rod (62) is further arranged on the side surface of the right-angle table (3), the angle measurer (10) is arc-shaped, angle graduation marks are arranged on the outer surface of the angle measurer (10), and an angle indicator needle (66) is arranged on the rotating shell (611);
the direction of the indicator needle (66) is parallel to the direction of the support rod (62).
4. An auxiliary device for calibrating an ammeter according to claim 3, wherein the upper support bar (62) of the rotary housing (611) is provided with a laser lamp (67), and the laser lamp (67) is arranged to illuminate the graduation marks on the angle graduation marks in the operating state.
5. An auxiliary device for calibrating an ammeter according to claim 4, wherein the laser lamp is an LED laser infrared lamp.
6. The auxiliary device for calibrating the ammeter according to claim 4, wherein the ammeter fixing mechanism (4) comprises a bearing plate (41) and a sliding block (43), the upper end face of the right-angle table (3) is provided with a sliding groove (5), the sliding block (43) is slidably connected in the sliding groove (5), two ends of the sliding block (43) are provided with fixing lugs, the sliding block (43) is fixed in the sliding groove (5) through fixing screws (44), the lower end of the bearing plate (41) is fixedly connected with the upper end of the sliding block (43), elastic side plates (42) are arranged on two sides of the upper end face of the bearing plate (41), the elastic side plates (42) are in an inverted U shape, one side wall of each elastic side plate (42) is connected with the corresponding bearing plate (41), and the other side wall of each elastic side plate (42) is suspended.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111336219.5A CN114062999B (en) | 2021-11-12 | 2021-11-12 | Auxiliary device for calibrating ammeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111336219.5A CN114062999B (en) | 2021-11-12 | 2021-11-12 | Auxiliary device for calibrating ammeter |
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| Publication Number | Publication Date |
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| CN114062999A CN114062999A (en) | 2022-02-18 |
| CN114062999B true CN114062999B (en) | 2023-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111336219.5A Active CN114062999B (en) | 2021-11-12 | 2021-11-12 | Auxiliary device for calibrating ammeter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0560148A1 (en) * | 1992-03-09 | 1993-09-15 | Siemens Aktiengesellschaft | Clamp-on current measuring probe and method of calibration of this probe |
| KR20130104722A (en) * | 2012-03-15 | 2013-09-25 | 에스티엑스조선해양 주식회사 | Scr welder using optical communication |
| CN104057361A (en) * | 2014-06-30 | 2014-09-24 | 苏州爱得科技发展有限公司 | Tooling for milling regular polygons |
| CN107755903A (en) * | 2017-11-17 | 2018-03-06 | 广州市艾派克智能激光科技有限公司 | A kind of compressor of air conditioner cylindrical shell end face laser facing attachment and method |
| JP6300881B1 (en) * | 2016-10-24 | 2018-03-28 | 株式会社Ｎａａファシリティーズ | Calibration test equipment |
| CN210465665U (en) * | 2019-04-28 | 2020-05-05 | 武汉市康达电气有限公司 | Supporting device and structure for detecting flexible Roche coil in laboratory |
| CN211180177U (en) * | 2019-09-24 | 2020-08-04 | 熊伟 | Visual monitoring platform for metering precision of intelligent electric meter |
| CN212872872U (en) * | 2020-07-01 | 2021-04-02 | 天津市计量监督检测科学研究院 | Clamp-on leakage ammeter calibrating device |
-
2021
- 2021-11-12 CN CN202111336219.5A patent/CN114062999B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0560148A1 (en) * | 1992-03-09 | 1993-09-15 | Siemens Aktiengesellschaft | Clamp-on current measuring probe and method of calibration of this probe |
| KR20130104722A (en) * | 2012-03-15 | 2013-09-25 | 에스티엑스조선해양 주식회사 | Scr welder using optical communication |
| CN104057361A (en) * | 2014-06-30 | 2014-09-24 | 苏州爱得科技发展有限公司 | Tooling for milling regular polygons |
| JP6300881B1 (en) * | 2016-10-24 | 2018-03-28 | 株式会社Ｎａａファシリティーズ | Calibration test equipment |
| CN107755903A (en) * | 2017-11-17 | 2018-03-06 | 广州市艾派克智能激光科技有限公司 | A kind of compressor of air conditioner cylindrical shell end face laser facing attachment and method |
| CN210465665U (en) * | 2019-04-28 | 2020-05-05 | 武汉市康达电气有限公司 | Supporting device and structure for detecting flexible Roche coil in laboratory |
| CN211180177U (en) * | 2019-09-24 | 2020-08-04 | 熊伟 | Visual monitoring platform for metering precision of intelligent electric meter |
| CN212872872U (en) * | 2020-07-01 | 2021-04-02 | 天津市计量监督检测科学研究院 | Clamp-on leakage ammeter calibrating device |
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| Publication number | Publication date |
|---|---|
| CN114062999A (en) | 2022-02-18 |
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