CN102707711B - Device for debugging actuator by using digital multimeter - Google Patents
Device for debugging actuator by using digital multimeter Download PDFInfo
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- CN102707711B CN102707711B CN201210181891.6A CN201210181891A CN102707711B CN 102707711 B CN102707711 B CN 102707711B CN 201210181891 A CN201210181891 A CN 201210181891A CN 102707711 B CN102707711 B CN 102707711B
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- digital multimeter
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- multimeter
- controller
- debugging
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Abstract
The invention discloses a device for debugging an actuator by using a digital multimeter and relates to the technical field of a control system. The device comprises the digital multimeter, a control chamber and the actuator; a controller in the control chamber is connected with the actuator and the digital multimeter; the device is characterized in that a probe of the digital multimeter is disconnected and is in series connection with an adjustable resistor R; the digital multimeter is regulated to a current range, that is, at a position of 200mA; a corresponding output point of a DCS (Distributed Control System) or the controller in the control chamber is output to 100 percent, that is, the constant current of 20 mA is output to the actuator; positive and negative probes of the digital multimeter are correctly connected in parallel on wiring terminals of the actuator, and the current running through the digital multimeter is 0-20 mA by regulating a crude regulation switch K and a fine adjustable resistor R. According to the device for debugging the actuator by using the digital multimeter disclosed by the invention, the digital multimeter is changed slightly, the actuator is tuned conveniently and rapidly for a long time on the premise of not influencing the original functions; a signal generator with the value of near ten thousands RMB is replaced by a multimeter with the value of several hundred RMB, so that the low cost and the convenience and reliability in use are achieved.
Description
Technical field
The present invention relates to control system technical field, be specifically related to one digital multimeter and debug actuator apparatus.
Background technology
Actuator is an important component part in automatic control system, and its effect is to receive the signal sent here of controller, changes the flow of controlled medium, thereby controlled variable is maintained in desired numerical value or certain scope.4～20mA DC signal of control system (DCS etc.) output both can have been controlled electric actuator, also can convert standard pressure signal to through electric pneumatic converter or electricity-gas valve positioner and control pneumatic actuator.Actuator is applied comparatively extensive in Chemical Manufacture, because actuator is direct and controlled medium contact and long-term use continuously, can break down unavoidably and need to overhaul.After maintenance in order to make it guarantee that control accuracy will adjust zero point, full scale and the linearity of actuator.At this moment need to send respectively 4～20mA DC standard signal to actuator.Because pulpit generally far contacts inconvenience apart from production scene, routine sends 4～20mA DC signal with process checking gauge or standard adjustable constant-flow source and carrys out adjustment.But these instruments are expensive, and due to the finite capacity of supplying cell, within general 2～3 hours, just need charging or change battery, using extremely inconvenient.
Summary of the invention
It is a kind of simple in structure that technical matters to be solved by this invention is to provide, and safe and reliable debugs actuator apparatus by digital multimeter.
Technical matters to be solved by this invention realizes by the following technical solutions:
One is debugged actuator apparatus by digital multimeter, comprise digital multimeter, pulpit and actuator, controller in described pulpit is connected with actuator and digital multimeter, it is characterized in that: a test pencil of described digital multimeter is disconnected by K switch, an adjustable resistance R connects in centre, adjust current gear to use described digital multimeter, it is 200mA gear, the DCS of described pulpit or controller are adjusted to corresponding output point to 100%, export 20mA constant current to actuator, the test pencil of described digital multimeter is divided on the positive and negative connection terminal that is connected in parallel on actuator, by regulating coarse adjustment K switch and fine tuning adjustable resistance R can make to flow through digital multimeter electric current at 0～20mA.
Described K switch is single pole multiple throw.
The invention has the beneficial effects as follows: the present invention only need change a little to digital multimeter, can be conveniently under the prerequisite that does not affect its original function long-time adjustment actuator, the signal generator that substitutes ten thousand yuan of left and right of value with the multimeter of hundreds of unit, cost is low, easy to use and reliable.
Accompanying drawing explanation
Fig. 1 is systematic schematic diagram of the present invention.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
As shown in Figure 1, one is debugged actuator apparatus by digital multimeter, comprise digital multimeter, pulpit and actuator, controller in described pulpit is connected with actuator and digital multimeter, it is characterized in that: a test pencil of described digital multimeter is disconnected by K switch, an adjustable resistance R connects in centre, adjust current gear to use described digital multimeter, it is 200mA gear, the DCS of described pulpit or controller are adjusted to corresponding output point to 100%, export 20mA constant current to actuator, the test pencil of described digital multimeter is divided on the positive and negative connection terminal that is connected in parallel on actuator, by regulating coarse adjustment K switch and fine tuning adjustable resistance R can make to flow through digital multimeter electric current at 0～20mA, flow through the electric current I of actuator (actuator is certain resistance coil)
0with the electric current I that flows through digital multimeter
1relation is:
I
0＋I
1＝20mA
Can obtain thus: I
0=20-I
1(mA)
That is: I
0adjustable between 0～20mA, thus zero point, full scale and the linearity that can debug easily actuator.
Wherein digital multimeter is provided with 1,2,3,4,5 gear altogether, and in the time that K switch is thrown 5 grades and adjustable resistance and is zero, digital multimeter is recovered original function.
The optional single pole multiple throw of K switch, actuator resistance is R
0(being generally 400 Ω) R
1, R
2, R
3respectively 1 × R
0, 2 × R
0, 3 × R
0, adjustable resistance R selects 0～R, all elements can be able to be encapsulated in organic glass capsule, safe and reliable.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and instructions, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (2)
1. debug actuator apparatus by digital multimeter for one kind, comprise digital multimeter, pulpit and actuator, controller in described pulpit is connected with actuator and digital multimeter, it is characterized in that: a test pencil of described digital multimeter is disconnected by coarse adjustment K switch, an adjustable resistance R connects in centre, adjust current gear to use described digital multimeter, it is 200mA gear, the controller of described pulpit is adjusted to corresponding output point to 100%, export 20mA constant current to actuator, the test pencil of described digital multimeter is divided on the positive and negative connection terminal that is connected in parallel on actuator, by regulating coarse adjustment K switch and fine tuning adjustable resistance R can make to flow through digital multimeter electric current at 0～20mA.
2. one according to claim 1 is debugged actuator apparatus by digital multimeter, it is characterized in that: described coarse adjustment K switch is single pole multiple throw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210181891.6A CN102707711B (en) | 2012-06-04 | 2012-06-04 | Device for debugging actuator by using digital multimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210181891.6A CN102707711B (en) | 2012-06-04 | 2012-06-04 | Device for debugging actuator by using digital multimeter |
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| Publication Number | Publication Date |
|---|---|
| CN102707711A CN102707711A (en) | 2012-10-03 |
| CN102707711B true CN102707711B (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210181891.6A Active CN102707711B (en) | 2012-06-04 | 2012-06-04 | Device for debugging actuator by using digital multimeter |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104122011B (en) * | 2014-07-02 | 2016-12-07 | 杨玮 | Thermometric instrument checking signal generator |
| CN107703470A (en) * | 2017-10-25 | 2018-02-16 | 广东天圣高科股份有限公司 | A kind of digital multimeter automatic debugging device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201903596U (en) * | 2010-11-19 | 2011-07-20 | 抚顺新钢铁有限责任公司 | Electric actuator checking meter |
| CN201903783U (en) * | 2010-12-02 | 2011-07-20 | 武汉诺尔曼科技有限公司 | Electrical aging device of electronic speed controller |
| CN202059157U (en) * | 2011-03-23 | 2011-11-30 | 上海梅山钢铁股份有限公司 | Detection protective device for servo control circuit with aviation plug-in |
| CN202600479U (en) * | 2012-06-04 | 2012-12-12 | 安徽泉盛化工有限公司 | Device for debugging actuator by using digital multimeter |
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2012
- 2012-06-04 CN CN201210181891.6A patent/CN102707711B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201903596U (en) * | 2010-11-19 | 2011-07-20 | 抚顺新钢铁有限责任公司 | Electric actuator checking meter |
| CN201903783U (en) * | 2010-12-02 | 2011-07-20 | 武汉诺尔曼科技有限公司 | Electrical aging device of electronic speed controller |
| CN202059157U (en) * | 2011-03-23 | 2011-11-30 | 上海梅山钢铁股份有限公司 | Detection protective device for servo control circuit with aviation plug-in |
| CN202600479U (en) * | 2012-06-04 | 2012-12-12 | 安徽泉盛化工有限公司 | Device for debugging actuator by using digital multimeter |
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| CN102707711A (en) | 2012-10-03 |
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Effective date of registration: 20140521 Address after: 233290, Dingyuan County, Anhui Province town furnace Applicant after: Anhui Quansheng Chemical Co.,Ltd. Applicant after: Yang Wei Address before: 03, room 51, Building 102, Yingbin Road, town, Dingyuan County, Anhui Province, China Applicant before: Yang Wei |