CN108680073A - A kind of disassembled vernier caliper and its installation method - Google Patents

A kind of disassembled vernier caliper and its installation method Download PDF

Info

Publication number
CN108680073A
CN108680073A CN201810438243.1A CN201810438243A CN108680073A CN 108680073 A CN108680073 A CN 108680073A CN 201810438243 A CN201810438243 A CN 201810438243A CN 108680073 A CN108680073 A CN 108680073A
Authority
CN
China
Prior art keywords
disassembled
vernier caliper
connecting component
foil gauge
resistance
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.)
Pending
Application number
CN201810438243.1A
Other languages
Chinese (zh)
Inventor
徐德俊
高洪兵
曾涵湄
陈庆瑜
王钦若
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.)
Guangdong University of Technology
Original Assignee
Guangdong University of Technology
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 Guangdong University of Technology filed Critical Guangdong University of Technology
Priority to CN201810438243.1A priority Critical patent/CN108680073A/en
Publication of CN108680073A publication Critical patent/CN108680073A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00Measuring instruments characterised by the use of mechanical techniques
    • G01B3/20Slide gauges

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length-Measuring Instruments Using Mechanical Means (AREA)

Abstract

This application discloses a kind of disassembled vernier caliper, including N sections of scale members, N is more than or equal to 2, removable connecting component and detection circuit;Connecting component includes:Main body is connected, connecting component is waited for for connecting;Wait for that connecting component includes two sections of adjacent scale members;Adjustment bolt, for adjusting connection main body and waiting for the tightness between connecting component;Positioned at connection body surfaces, deformation direction and the relevant foil gauge of the tightness;Detection circuit, the resistance value for detecting foil gauge, and whether resistance value reaches the judging result of preset resistive value.In the present invention, foil gauge is adjusted to preset resistive value using detection circuit, actually make connecting component being adjusted to preset tightness, the deformation quantity of connecting component is consistent when ensure that each installation, to which disassembled vernier caliper when improving range, can ensure higher precision connecting the scale member of two or more.Disclosed herein as well is a kind of installation methods of disassembled vernier caliper.

Description

A kind of disassembled vernier caliper and its installation method
Technical field
The present invention relates to measuring tool technical field, more particularly to a kind of disassembled vernier caliper and its installation method.
Background technology
Vernier caliper (vernier calliper), be it is a kind of measurement length, internal-and external diameter, depth measurer, mainly by leading Ruler is constituted with slidable vernier two parts on main scale are attached to.Vernier caliper has very high precision in measurement, is carrying out essence It is widely used when close measurement, but traditional vernier caliper can not be dismantled, so that when wherein the one of vernier caliper It can not be just continuing with when partial destruction, and the vernier caliper size of some wide ranges is larger, it is not square enough in storage, carrying Just.
To solve the above-mentioned problems, it is thus proposed that dismountable vernier caliper, this vernier caliper are being stored or carried When be split as two pieces or more than one piece, when in use utilize component on mechanical notch, by these components combine be mounted to one It is used according to the usage of vernier caliper script after a complete vernier caliper.
But since the precision of mechanical card slot in making cannot be accurately controlled, there is different installations in installation every time Error, and it is likely to occur deformation in installation or removal, cause the vernier caliper for being originally used for accurately measuring to occur measuring mistake Difference is put the cart before the horse, and the most basic function of vernier caliper is destroyed.
Therefore, how to provide a kind of scheme solving above-mentioned technical problem is that current those skilled in the art need to solve Problem.
Invention content
In view of this, the purpose of the present invention is to provide a kind of disassembled vernier caliper and its installation method, in the present invention Disassembled vernier caliper is after installing while having the range of higher precision and bigger.Its concrete scheme is as follows:
A kind of disassembled vernier caliper, including N sections of scale members, wherein N be more than or equal to 2, removable connecting component and Detection circuit;
The connecting component includes:
Main body is connected, connecting component is waited for for connecting;It is described to wait for that connecting component includes two sections of adjacent scale members;
Adjustment bolt, for adjusting the connection main body and the tightness waited between connecting component;
Positioned at the connection body surfaces, deformation direction and the relevant foil gauge of the tightness;
The detection circuit, the resistance value for detecting the foil gauge, and export whether the resistance value reaches preset resistive value Judging result.
Preferably, the detection circuit includes:
Survey resistance circuit for the resistance value for detecting the foil gauge;
Export the foil gauge resistance value whether reach the preset resistive value judging result logic circuit.
Preferably, the survey resistance circuit includes:First resistor, second resistance, 3rd resistor, the first diode and the two or two Pole pipe;
Wherein, the first end of the first resistor respectively with the first end of the foil gauge, first diode just Pole, the cathode of second diode are connected;The first end of the second resistance respectively with the first end of the 3rd resistor, institute The anode of the cathode, second diode of stating the first diode is connected;The second end of the foil gauge and the second resistance Second end be connected after first end as the detection circuit;The of the second end of the first resistor and the 3rd resistor The connected second end as the detection circuit in two ends;The first end of the detection circuit is grounded or connects DC power supply, the inspection Second termination DC power supply of slowdown monitoring circuit or ground connection;
The ratio of the preset resistive value and the resistance value of the first resistor is equal to the resistance value of the second resistance and the third The ratio of the resistance value of resistance.
Preferably, the logic circuit is specifically used for:
When first diode and second diode do not turn on, the resistance value for exporting the foil gauge reaches pre- The judging result of handicapping value.
Preferably, the survey resistance circuit includes predeterminated voltage power supply and ammeter.
Preferably, detection circuit further includes:
The display lamp and/or buzzer being connected with the logic circuit.
Preferably, the N sections of scale member is two sections of scale members.
Preferably, the range of the disassembled vernier caliper is no more than 1 meter.
Correspondingly, the invention also discloses a kind of installation method of disassembled vernier caliper, it is applied to as any one of above The disassembled vernier caliper, including:
Connecting component is waited for by connecting main body connection;
Adjustment bolt is until the resistance value that the judging result of detection circuit output is foil gauge reaches preset resistive value.
The invention discloses a kind of disassembled vernier caliper, including N sections of scale members, wherein N is dismantled and assembled more than or equal to 2 Connecting component and detection circuit;The connecting component includes:Main body is connected, connecting component is waited for for connecting;It is described to wait connecting Component includes two sections of adjacent scale members;Adjustment bolt waits for connecting component for adjusting the connection main body with described Between tightness;Positioned at the connection body surfaces, deformation direction and the relevant foil gauge of the tightness;The inspection Slowdown monitoring circuit, the resistance value for detecting the foil gauge, and export the judging result whether resistance value reaches preset resistive value.This hair In bright, foil gauge is adjusted to preset resistive value using detection circuit, actually makes connecting component being adjusted to preset elastic journey Degree, the deformation quantity of connecting component is consistent when ensure that each installation, to disassembled vernier caliper connection two sections or two sections with On scale member when improving range, can ensure higher precision.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of structural schematic diagram of disassembled vernier caliper in the embodiment of the present invention;
Fig. 2 is a kind of partial schematic diagram of specific connecting component in the embodiment of the present invention;
Fig. 3 is a kind of overall schematic of disassembled vernier caliper in the embodiment of the present invention;
Fig. 4 is a kind of specific circuit topology figure for surveying resistance circuit in the embodiment of the present invention;
Fig. 5 is a kind of step flow chart of the installation method of disassembled vernier caliper in the embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
It is shown in Figure 1 the embodiment of the invention discloses a kind of disassembled vernier caliper, including N sections of scale members, wherein N is more than or equal to 2, removable connecting component 2 and detection circuit 3;
In fact, on a disassembled vernier caliper, when to need the scale member connected be N sections, corresponding connecting component It should be N-1.
But, it is contemplated that scale member quantity is more, and error is bigger when connection, and being typically chosen the N sections of scale members is Two sections of scale members.Also, due to the rigid restriction of scale member, if the length after scale member connection is long, meeting There is certain bending, therefore range is also restricted, the range that the disassembled vernier caliper is usually arranged is no more than 1 meter.
The connecting component 2 includes:
Main body 21 is connected, connecting component is waited for for connecting;It is described to wait for that connecting component includes two sections of adjacent scale portions Part 1a and 1b, wherein 1≤a≤b≤N;
Specifically, connection main body 21 can be independently of the separate part for waiting for connecting component, can also be to be located to wait connecting A part for connecting pin in scale member 1a or 1b on component.Most common connection main body is click on fashion, corresponding company The partial schematic diagram of relay part 2 is referring to Fig. 2, and opposite, the overall schematic of disassembled vernier caliper can be found in Fig. 3.
Adjustment bolt 22, for adjusting the connection main body 21 and the tightness waited between connecting component;
It is a kind of means of common adjustment tightness it is understood that tightening or adjusting pine by adjustment bolt 22.
Positioned at the relevant foil gauge of 21 surface of connection main body, deformation direction and the tightness 23;
Foil gauge 23 has strain effect, specifically, conductor or semi-conducting material generate machinery under the action of external force When deformation, resistance value changes accordingly, and this phenomenon is known as " strain effect ".The deformation of foil gauge 23 in the present embodiment With the deformation directional correlation for connecting main body 21, connected when connecting component each, if the deformation degree of foil gauge 23 is always It is identical, then waiting for that connecting component and the tightness connected between main body 21 are identical always, it is therefore considered that in the present embodiment Complete disassembled vernier caliper is installed from parts every time, deformation degree does not change, not to same survey after homogeneous installation Amount object measures, and measurement result is identical, and measurement result has higher accuracy.
The detection circuit 3, the resistance value for detecting the foil gauge 23, and export whether the resistance value reaches pre- handicapping The judging result of value.
Wherein, preset resistive value determines the tightness after the adjustment of adjustment bolt 22.The preset resistive value can be determined as answering Become any value in the variation Standard resistance range of piece 23, as long as the preset resistive value determines, then disassembled vernier calliper in the present embodiment The component installation and removal of ruler will not lead to the deformation of disassembled vernier caliper, pacify to eliminate vernier caliper and be dismantled in component Fill the inaccurate factor to deform in the process so that disassembled vernier caliper ensure that weight while convenient for dismantling carrying The precision dismounted again.
The preset resistive value can also be the integral type mark of disassembled vernier caliper and same range in comparing the present embodiment After quasi- vernier caliper, it is adjusted the resistance value of the corresponding foil gauge of ideal tightness 23 after bolt 22 is adjusted.According to this side The preset resistive value that method obtains is adjusted installation, and the accuracy of the disassembled vernier caliper finally obtained is infinitely close to normal tour Slide calliper rule are marked, measurement result is more accurate.
The embodiment of the invention discloses a kind of disassembled vernier caliper, including N sections of scale members, wherein N is more than or equal to 2, Removable connecting component and detection circuit;The connecting component includes:Main body is connected, connecting component is waited for for connecting;It is described Wait for that connecting component includes two sections of adjacent scale members;Adjustment bolt, for adjusting the connection main body and the company of waiting for Tightness between relay part;Positioned at the connection body surfaces, deformation direction and the relevant foil gauge of the tightness; The detection circuit, the resistance value for detecting the foil gauge, and export the judgement the knot whether resistance value reaches preset resistive value Fruit.In the present invention, foil gauge is adjusted to preset resistive value using detection circuit, actually makes connecting component being adjusted to preset Tightness, the deformation quantity of connecting component is consistent when ensure that each installation, to disassembled vernier caliper connection two sections or Two sections or more of scale member when improving range, can ensure higher precision.
The embodiment of the invention discloses a kind of specific disassembled vernier calipers, relative to a upper embodiment, the present embodiment Further instruction and optimization have been made to technical solution.Specifically:
The detection circuit 3 includes:
Survey resistance circuit 31 for the resistance value for detecting the foil gauge 23;
Export the foil gauge 23 resistance value whether reach the preset resistive value judging result logic circuit 32.
Further, detection circuit 3 can also include:
The display lamp and/or buzzer being connected with the logic circuit 32.
It is understood that when logic circuit 32 exports judging result, display lamp and/or buzzer export corresponding shape State changes.For example, when judging result is yes, display lamp is bright, and buzzer beeps.Indicate that adjustment bolt 22 has adjusted with this In place.
Specifically, it may include predeterminated voltage power supply and ammeter to survey resistance circuit 31, pass through predeterminated voltage electricity garden and electric current The resistance of foil gauge 23 can be calculated in table.
It is relatively complicated in view of process when calculating resistance using predeterminated voltage power supply and ammeter, therefore the present embodiment devises Another kind surveys resistance circuit 31, and shown in Figure 4, the survey resistance circuit 31 includes:First resistor R1, second resistance R2, third electricity Hinder R3, the first diode D1 and the second diode D2;
Wherein, the first end of the first resistor R1 respectively with the first end of the foil gauge 23, first diode The cathode of positive, the described second diode D2 of D1 is connected;The first end of the second resistance R2 respectively with the 3rd resistor The first end of R3, the cathode of the first diode D1, the anode of the second diode D2 are connected;The of the foil gauge 23 First end as the detection circuit after two ends are connected with the second end of the second resistance R2;The of the first resistor R1 The second end that two ends are connected with the second end of the 3rd resistor R3 as the detection circuit;The first end of the detection circuit It is grounded or connects DC power supply, the second termination DC power supply of the detection circuit or ground connection;
The ratio of the resistance value of the preset resistive value and the first resistor R1, equal to the resistance value of the second resistance R2 with it is described The ratio of the resistance value of 3rd resistor R3.
It is understood that the foil gauge 23 in Fig. 4 circuits should be regarded as a variable resistance, preset according in the preceding paragraph Resistance value ratio, when the resistance value of foil gauge 23 is just preset resistive value, namely when reaching bridge balance, the first diode D1 and The voltage difference at the second both ends diode D2 is zero, therefore the two diodes are not turned on and do not shone;When the resistance of foil gauge 23 Value is more than or less than preset resistive value, and the first diode D1 or the second diode D2 can be lighted accordingly, to prompt user to adjustment Bolt 22 makes corresponding adjustment.
Further, it is possible to by the luminescent color or home position of differentiation the first diode D1 and the second diode D2 come table The adjustment direction of bright adjustment bolt 22 facilitates the adjustment direction of user more clear.
It can regard the first diode D1 and the second diode D2 as logic circuit 32 at this time, can also further be arranged again Logic circuit 32, is specifically used for:
When the first diode D1 and the second diode D2 are not turned on, the resistance value for exporting the foil gauge reaches To the judging result of preset resistive value.
Correspondingly, the embodiment of the invention also discloses a kind of installation method of disassembled vernier caliper, it is applied to as above Any one disassembled vernier caliper, it is shown in Figure 5, including:
S1:Connecting component is waited for by connecting main body connection;
S2:Adjustment bolt is until the resistance value that the judging result of detection circuit output is foil gauge reaches preset resistive value.
Using the installation method in the present embodiment, disassembled vernier caliper can be installed as to a range and precision not Become, obtain the vernier caliper of accurate results.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning Covering non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only that A little elements, but also include other elements that are not explicitly listed, or further include for this process, method, article or The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged Except there is also other identical elements in the process, method, article or apparatus that includes the element.
A kind of disassembled vernier caliper provided by the present invention and its installation method are described in detail above, herein In apply specific case principle and implementation of the present invention are described, the explanation of above example is only intended to sides Assistant solves the method and its core concept of the present invention;Meanwhile for those of ordinary skill in the art, think of according to the present invention Think, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not be construed as pair The limitation of the present invention.

Claims (9)

1. a kind of disassembled vernier caliper, which is characterized in that including N sections of scale members, wherein N is more than or equal to 2, removable company Relay part and detection circuit;
The connecting component includes:
Main body is connected, connecting component is waited for for connecting;It is described to wait for that connecting component includes two sections of adjacent scale members;
Adjustment bolt, for adjusting the connection main body and the tightness waited between connecting component;
Positioned at the connection body surfaces, deformation direction and the relevant foil gauge of the tightness;
The detection circuit, the resistance value for detecting the foil gauge, and export whether the resistance value reaches sentencing for preset resistive value Disconnected result.
2. disassembled vernier caliper according to claim 1, which is characterized in that the detection circuit includes:
Survey resistance circuit for the resistance value for detecting the foil gauge;
Export the foil gauge resistance value whether reach the preset resistive value judging result logic circuit.
3. disassembled vernier caliper according to claim 2, which is characterized in that the survey resistance circuit includes:First resistor, Two resistance, 3rd resistor, the first diode and the second diode;
Wherein, the first end of the first resistor respectively with the first end of the foil gauge, the anode of first diode, institute The cathode for stating the second diode is connected;The first end of the second resistance respectively with the first end of the 3rd resistor, described The cathode of one diode, the anode of second diode are connected;The of the second end of the foil gauge and the second resistance First end after two ends are connected as the detection circuit;The second end of the second end of the first resistor and the 3rd resistor The second end being connected as the detection circuit;The first end of the detection circuit is grounded or connects DC power supply, the detection electricity The second termination DC power supply on road or ground connection;
The ratio of the preset resistive value and the resistance value of the first resistor is equal to the resistance value of the second resistance and the 3rd resistor Resistance value ratio.
4. disassembled vernier caliper according to claim 3, which is characterized in that the logic circuit is specifically used for:
When first diode and second diode do not turn on, the resistance value for exporting the foil gauge reaches pre- handicapping The judging result of value.
5. disassembled vernier caliper according to claim 2, which is characterized in that the survey resistance circuit includes predeterminated voltage power supply And ammeter.
6. according to any one of claim 2 to the 5 disassembled vernier caliper, which is characterized in that the detection circuit further includes:
The display lamp and/or buzzer being connected with the logic circuit.
7. according to any one of claim 1 to the 5 disassembled vernier caliper, which is characterized in that
The N sections of scale member is two sections of scale members.
8. disassembled vernier caliper according to claim 7, which is characterized in that the range of the disassembled vernier caliper does not surpass Cross 1 meter.
9. a kind of installation method of disassembled vernier caliper, which is characterized in that be applied to as described in any one of claim 1 to 8 Disassembled vernier caliper, including:
Connecting component is waited for by connecting main body connection;
Adjustment bolt is until the resistance value that the judging result of detection circuit output is foil gauge reaches preset resistive value.
CN201810438243.1A 2018-05-09 2018-05-09 A kind of disassembled vernier caliper and its installation method Pending CN108680073A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810438243.1A CN108680073A (en) 2018-05-09 2018-05-09 A kind of disassembled vernier caliper and its installation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810438243.1A CN108680073A (en) 2018-05-09 2018-05-09 A kind of disassembled vernier caliper and its installation method

Publications (1)

Publication Number Publication Date
CN108680073A true CN108680073A (en) 2018-10-19

Family

ID=63805962

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810438243.1A Pending CN108680073A (en) 2018-05-09 2018-05-09 A kind of disassembled vernier caliper and its installation method

Country Status (1)

Country Link
CN (1) CN108680073A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB223339A (en) * 1923-08-01 1924-10-23 Arthur John Charles Brookes Adjustable extension collet attachment for use with improved combination extending length measuring bars or gauges
US6467183B2 (en) * 1999-02-27 2002-10-22 Richard D. Larsen Fractional-decimal vernier
CN1519534A (en) * 2003-02-07 2004-08-11 ����ŵ��ѧԺ��˾ Ruler
CN103016489A (en) * 2012-12-12 2013-04-03 北京必创科技有限公司 Bolt
CN205664964U (en) * 2016-06-08 2016-10-26 安徽江淮汽车股份有限公司 Threaded connection elasticity state detection device has
CN106918274A (en) * 2017-04-26 2017-07-04 广东工业大学 A kind of Portable vernier slide calliper rule of expansible range
CN206507933U (en) * 2016-11-15 2017-09-22 新疆医科大学第一附属医院 A kind of outside fixed frame for external osteosynthesis device for measuring force
CN108955442A (en) * 2018-08-08 2018-12-07 赣州森贸文具有限公司 A kind of easy-to-dismount bamboo rule

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB223339A (en) * 1923-08-01 1924-10-23 Arthur John Charles Brookes Adjustable extension collet attachment for use with improved combination extending length measuring bars or gauges
US6467183B2 (en) * 1999-02-27 2002-10-22 Richard D. Larsen Fractional-decimal vernier
CN1519534A (en) * 2003-02-07 2004-08-11 ����ŵ��ѧԺ��˾ Ruler
CN103016489A (en) * 2012-12-12 2013-04-03 北京必创科技有限公司 Bolt
CN205664964U (en) * 2016-06-08 2016-10-26 安徽江淮汽车股份有限公司 Threaded connection elasticity state detection device has
CN206507933U (en) * 2016-11-15 2017-09-22 新疆医科大学第一附属医院 A kind of outside fixed frame for external osteosynthesis device for measuring force
CN106918274A (en) * 2017-04-26 2017-07-04 广东工业大学 A kind of Portable vernier slide calliper rule of expansible range
CN108955442A (en) * 2018-08-08 2018-12-07 赣州森贸文具有限公司 A kind of easy-to-dismount bamboo rule

Similar Documents

Publication Publication Date Title
US8049488B2 (en) Electrical power metering device and method of operation thereof
CN204329857U (en) Reinforcing bar scene checks chi fast
US7294997B2 (en) Electrical meter system with color coding features
CN1425923A (en) Multiple measuring range DC potential difference meter
CN103424734A (en) On-line calibration method of electronic watt-hour meter
CN104375109B (en) A kind of self calibration method of testing of resistance load coefficient
CN101533082A (en) Electric energy meter half wave rectification testing line
CN101988957B (en) Dynamic detection method and system of sampling accuracy of electric quantity of merging unit of substation
CN104914395B (en) A kind of detection quality verification method for single-phase intelligent electric energy meter automatic calibration system
CN2035080U (en) Electric difference temperature meter
CN108680073A (en) A kind of disassembled vernier caliper and its installation method
CN209312238U (en) Voltage and current phasor diagram simulates turntable
CN204944391U (en) Depth of thread rule depth calibration device
CN107589396B (en) dynamic performance tracing method based on conventional electric energy calibrator
CN110045212A (en) A kind of method and system that line loss per unit is evaluated based on electric energy metering device uncertainty
CN103792430B (en) Self-adaptive range resistance test method
CN216209478U (en) Impedance to earth measuring circuit
CN104534958A (en) Ruler for rapidly checking steel bars on site
CN109613465A (en) A kind of metrological supervision method of low-voltage current mutual inductor automatic calibration assembly line
CN109407042B (en) Intelligent electric meter calibration method
CN104914399B (en) A kind of electric power meter calibration method for single-phase intelligent electric energy meter automatic calibration system
CN109444553B (en) Wire connector resistance measuring method and measuring system
CN1740799A (en) DC potential difference meter with three measurement range conversion
CN215678551U (en) Metering device of subway electric energy meter
CN104914396B (en) A kind of stability testing method for single-phase intelligent electric energy meter automatic calibration system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20181019