CN208421073U - A kind of instrument for measuring DC resistance with temperature precise measurement and automatic conversion function - Google Patents
A kind of instrument for measuring DC resistance with temperature precise measurement and automatic conversion function Download PDFInfo
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- CN208421073U CN208421073U CN201820707000.9U CN201820707000U CN208421073U CN 208421073 U CN208421073 U CN 208421073U CN 201820707000 U CN201820707000 U CN 201820707000U CN 208421073 U CN208421073 U CN 208421073U
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Abstract
A kind of instrument for measuring DC resistance with temperature precise measurement and automatic conversion function, including shell, display, thermometer, control and computing unit, DC current output unit, printer unit, USB interface, current measuring interface, voltage measurement interface；The control and computing unit is connect with display, thermometer, DC current output unit, printer unit, USB interface, current measuring interface, voltage measurement interface respectively；The control and computing unit setting are inside the housing；The display, current measuring interface, voltage measurement interface, USB interface are arranged at formation operation panel on an end face of shell；For controlling DC current output unit output stable DC stream, advantage is can accurately to measure environment temperature and convert automatically, and test data automatically saves and can facilitate export, mitigates testing crew workload for the control and computing unit, improves working efficiency.
Description
Technical field
It is specially a kind of to convert the straight of function with automatic with temperature precise measurement the utility model relates to service kit field
Leakage resistance tester.
Background technique
D.C. resistance test is an important tests project of high voltage electric equipment.Currently, being often used D.C. resistance test
Instrument carries out the direct current resistance m easurem ent of high voltage electric equipment, and principle is on tested device by certain DC current, measurement
The D.C. resistance of equipment under test is calculated in the DC voltage at equipment under test both ends.
The temperature relation when DC resistance of electrical equipment and test is close, and each test value will be converted to one and be united
One temperature (such as 75 DEG C) is in order to comparing.Currently, on-site personnel generally D.C. resistance test when carry it is portable warm and humid
Degree meter, read test when temperature, DC resistance is converted according to the temperature value of reading, and with factory-said value or upper sub-value
It is compared.There are the following problems in D.C. resistance field test:
(1) when testing at the scene, the Hygrothermograph quality that testing crew carries is irregular, after long-time use or scene
Collide with etc. and to be all easy to cause display inaccuracy, and then influence the accuracy of D.C. resistance reduced value.
(2) when testing at the scene, usually successively carry out the DC resistance of more electrical equipments, for accurate measurement temperature
Degree will re-read temperature value when testing each time.
(3) the D.C. resistance test of each electrical equipment will read temperature by the Hygrothermograph of carrying, manually into
The conversion of row DC resistance, and be compared with factory-said value or upper sub-value, calculation amount is larger.If work on the spot is pressed for time,
Then testing crew is likely to occur calculating mistake, if an exceeded test value is calculated as qualification, needs in discovery mistake
It makes out an invoice again afterwards operation, wasting manpower and material resources, and influence maintenance duration.
Utility model content
The shortcomings that the purpose of the utility model is to overcome the above-mentioned prior arts, it is simple to provide a kind of structure, easy to carry, behaviour
Make a kind of easy instrument for measuring DC resistance with temperature precise measurement and automatic conversion function.
The utility model is achieved through the following technical solutions:
A kind of instrument for measuring DC resistance with temperature precise measurement and automatic conversion function, including shell, display, temperature
Meter, control and computing unit, DC current output unit, printer unit, USB interface, current measuring interface, voltage measurement connect
Mouthful；The control and computing unit connects with display, thermometer, DC current output unit, printer unit, USB respectively
Mouth, current measuring interface, the connection of voltage measurement interface；The control and computing unit setting are inside the housing；Described is aobvious
Show that device, current measuring interface, voltage measurement interface, USB interface are arranged at formation operation panel on an end face of shell；It is described
Control and computing unit for control DC current output unit output stable DC stream, receive current measuring interface and
The current value of voltage measurement interface transmission converts DC resistance with voltage value and by the temperature of thermometer measure, counts
Calculate and simultaneously shown by display with the deviation of factory-said value or last time measured value, control and computing unit also to test period,
Device name, DC resistance store and are read out output by printer unit or USB interface.
It as an improvement of the above scheme, further include that alarm module is connect with control and computing unit, the alarm module
For issuing alarm signal when test result exceeds word order value in control and computing unit.
As an improvement of the above scheme, the control and computing unit are integrated chip.
As an improvement of the above scheme, the center of panel is arranged in the display, and multiple voltages are surveyed
Amount interface is separately positioned on the two sides of display, and the outside of voltage measurement interface is arranged in multiple current measuring interfaces.
As an improvement of the above scheme, temperature display module is additionally provided on the panel to measure based on displays temperature
Temperature value.
As an improvement of the above scheme, print button is additionally provided on the panel to carry out for open printing machine unit
Print job.
The utility model has the following beneficial effects:
1, it can accurately measure environment temperature and convert automatically, test data automatically saves and can facilitate export, mitigates test
Person works' amount, improves working efficiency.
2, it can alarm in test result exception, testing crew is reminded to check and handle in time, improve test result
Accuracy, avoid extra work caused by error in data.
3. the meeting automatic alarm when test result is more than regulation permissible value, reminds testing crew to check and handle in time.
Detailed description of the invention
Fig. 1 is the module connection diagram of the utility model.
Fig. 2 is the panel construction schematic diagram of the utility model.
Fig. 3 is the use state diagram of the utility model.
Specific embodiment
Embodiment
As shown in Figure 1 and Figure 2, a kind of instrument for measuring DC resistance with temperature precise measurement and automatic conversion function, including it is outer
Shell 1, display 2, thermometer 3, control and computing unit 4, DC current output unit 5, printer unit 6, USB interface 7, electricity
Flow measurement interface 8, voltage measurement interface 9, alarm module 13；The control and computing unit 4 respectively with display 2, temperature
Meter 3, DC current output unit 5, printer unit 6, USB interface 7, current measuring interface 8, voltage measurement interface 9, alarm mould
Block 13 connects；The alarm module is used to issue alarm signal when test result exceeds word order value in control and computing unit
Number.The control and computing unit 4 are arranged inside shell 1；The display 2, current measuring interface 8, voltage measurement
Interface 9, USB interface 7 are arranged at formation panel 10 on an end face of shell 1；The control and computing unit 4 is for controlling
DC current output unit 5 exports stable DC stream, receives the electricity that current measuring interface 8 and voltage measurement interface 9 transmit
Flow valuve converts DC resistance with voltage value and by the temperature that thermometer 3 measures, and calculates and surveys with factory-said value or last time
The deviation of magnitude is simultaneously shown that control and computing unit 4 are also to test period, device name, D.C. resistance by display 2
Value store and is read out output by printer unit 6 or USB interface 7.The control and computing unit 4 is integrated
Chip.The center of panel 10 is arranged in the display 2, and multiple voltage measurement interfaces 9 are separately positioned on aobvious
Show the two sides of device 2, the outside of voltage measurement interface 9 is arranged in multiple current measuring interfaces 8.On the panel 10
It is additionally provided with the temperature value of 3 measurements based on displays temperature of temperature display module 11.Be additionally provided on the panel 10 printing by
Button 12 carries out print job for open printing machine unit 6.
Operation instruction: as shown in figure 3, carrying out wiring to measured object, on the outside, pressure-wire is described in inside for current line
Current line accesses current measuring interface 8, and pressure-wire accesses voltage measurement interface 9；By DC current output unit 5 to measured object
Stable DC electric current is inputted, real time temperature measurement is carried out to measured object by thermometer 3；It to control and is calculated single by display screen
First 4 inner parameters, which are set and start test instrument for measuring DC resistance, can measure the DC resistance of tested device, automatic to roll over
The DC resistance under target temperature is calculated, and is compared with synthermal lower factory-said value or upper sub-value, calculating deviation, when inclined
Difference will call the police when being more than alarm limits, remind testing crew inspection verification.After the completion of one phase electric equipment test, according to above-mentioned step
Suddenly next phase equipment test, the default temperature of the general same same a collection of electrical equipment D.C. resistance factory-said value in station, alarm are carried out
Limitation etc. is all the same；All tests terminate and after test result confirmations, can print all test datas, or will by USB flash disk
Data copy comes out.The Test Information that instrument automatically saves includes test period, temperature, tested device title, measured value and temperature
At degree, reduced value and reduced temperature, identical temperature and the deviation of factory-said value, test report is worked out according to these information with can be convenient
It accuses.
Above-listed detailed description is illustrating for the utility model possible embodiments, and the embodiment is not to limit
The scope of the patents of the utility model, all equivalence enforcements or change without departing from carried out by the utility model, is intended to be limited solely by this case
In the scope of the patents.
Claims (6)
1. a kind of instrument for measuring DC resistance with temperature precise measurement and automatic conversion function, which is characterized in that including shell, show
Show device, thermometer, control and computing unit, DC current output unit, printer unit, USB interface, current measuring interface,
Voltage measurement interface；The control and computing unit respectively with display, thermometer, DC current output unit, printer
Unit, USB interface, current measuring interface, the connection of voltage measurement interface；The control and computing unit setting are inside the shell
Portion；The display, current measuring interface, voltage measurement interface, USB interface, which are arranged on an end face of shell, forms behaviour
Make panel；The control and computing unit receives electricity for controlling DC current output unit output stable DC stream
The current value and voltage value of flow measurement interface and the transmission of voltage measurement interface simultaneously pass through the temperature of thermometer measure to D.C. resistance
Value is converted, and is calculated the deviation with factory-said value or last time measured value and is shown by display, is controlled and computing unit
Storage also is carried out to test period, device name, DC resistance and is read out by printer unit or USB interface defeated
Out.
2. a kind of instrument for measuring DC resistance with temperature precise measurement and automatic conversion function according to claim 1,
It is characterized in that, further includes that alarm module is connect with control and computing unit, the alarm module is used for when control and calculates single
Alarm signal is issued when test result exceeds word order value in member.
3. a kind of instrument for measuring DC resistance with temperature precise measurement and automatic conversion function according to claim 1,
It is characterized in that, the control and computing unit are integrated chip.
4. a kind of instrument for measuring DC resistance with temperature precise measurement and automatic conversion function according to claim 1,
It is characterized in that, the center of panel is arranged in the display, and multiple voltage measurement interfaces are separately positioned on aobvious
Show the two sides of device, the outside of voltage measurement interface is arranged in multiple current measuring interfaces.
5. a kind of instrument for measuring DC resistance with temperature precise measurement and automatic conversion function according to claim 1,
It is characterized in that, the temperature value that temperature display module measures based on displays temperature is additionally provided on the panel.
6. a kind of instrument for measuring DC resistance with temperature precise measurement and automatic conversion function according to claim 1,
It is characterized in that, print button is additionally provided on the panel for open printing machine unit and carries out print job.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820707000.9U CN208421073U (en) | 2018-05-10 | 2018-05-10 | A kind of instrument for measuring DC resistance with temperature precise measurement and automatic conversion function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820707000.9U CN208421073U (en) | 2018-05-10 | 2018-05-10 | A kind of instrument for measuring DC resistance with temperature precise measurement and automatic conversion function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208421073U true CN208421073U (en) | 2019-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820707000.9U Active CN208421073U (en) | 2018-05-10 | 2018-05-10 | A kind of instrument for measuring DC resistance with temperature precise measurement and automatic conversion function |
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| Country | Link |
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| CN (1) | CN208421073U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113252988A (en) * | 2021-07-05 | 2021-08-13 | 湖南亿能电子科技有限公司 | Handheld parameter tester and parameter testing method |
-
2018
- 2018-05-10 CN CN201820707000.9U patent/CN208421073U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113252988A (en) * | 2021-07-05 | 2021-08-13 | 湖南亿能电子科技有限公司 | Handheld parameter tester and parameter testing method |
| CN113252988B (en) * | 2021-07-05 | 2021-10-26 | 湖南亿能电子科技有限公司 | Handheld parameter tester and parameter testing method |
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