CN2251143Y - Portable universal field checker - Google Patents
Portable universal field checker Download PDFInfo
- Publication number
- CN2251143Y CN2251143Y CN 96214373 CN96214373U CN2251143Y CN 2251143 Y CN2251143 Y CN 2251143Y CN 96214373 CN96214373 CN 96214373 CN 96214373 U CN96214373 U CN 96214373U CN 2251143 Y CN2251143 Y CN 2251143Y
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- CN
- China
- Prior art keywords
- signal
- output
- switch
- signal generator
- multimeter
- 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.)
- Expired - Fee Related
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- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The utility model relates to a portable multifunctional checker which is used for field installation, debugging, and maintenance of industrial instruments. The portable universal field checker is composed of a universal meter measuring circuit, a universal meter display circuit, a casing, a panel, a function conversion switch, a signal generator, etc. A circuit board of a DC signal generator is additionally arranged among an upper cover, a core, and a rear cover of an original universal meter, the circuit board is fixed on a frame, the frame, a front cover core, and the rear cover are cooperatively connected together, and the appearance likes integration. Side surfaces of the frame provided with a direct current analog signal output socket, a signal regulating knob, and a signal conversion switch which are respectively connected with the circuit board.
Description
The utility model relates to the on-the-spot Installation and Debugging of a kind of industrial instrument, the employed portable multi-function tester of maintenance.
The instrument of the electrical instrument of at present domestic portable field tester test verification instrument and meter for automation of having produced and test electrical quantity is divided into two kinds, so will be with above-mentioned two instrument multimeters and tester when testing verification at the scene sometimes, this makes the behaviour person of being carry inconvenience, also uneconomical, at the problems referred to above, the utility model has designed a kind of portable general-purpose on-site calibrator.
The purpose of this utility model is a kind of all measurement functions that promptly have multimeter of design, can export the required direct current signal of industrial automation instrument verification (0-5V, 0-100mV, 0-20mA adjustable signal again, 1V, 5V, 4mA, 20mA set value signal), and provide 24V/25mA direct supply to calibrated meter.
Design proposal of the present utility model is: a kind of measurement by multimeter, display circuit, casing, panel, button, function switch, the portable general-purpose on-site calibrator that signal generator etc. are formed, it is characterized in that: between the loam cake of former multimeter and movement and bonnet, set up the direct-flow signal generator circuit board, this circuit board is fixed on the framework, framework and protecgulum movement and bonnet cooperate together, outward appearance is seemed as one, and frame facet has DC simulation signal output plughole, Signal Regulation knob and signal switch K1, K2, K3 is connected with circuit board respectively.
Switch K1 one end is connected with the direct-flow signal generator input end, and the other end is connected with the voltage divider output terminal, by conversion may command input varying voltage signal.
Switch K2 one end is connected with the output terminal of direct-flow signal generator, the other end is connected with the input end of direct current signal output circuit, adjustable signal by the output of conversion may command 0-5V, 0-100mV, 0-20mA, output 1V, 5V, 4mA, 20mA set value signal, the constant current signal that output 0-20mA distributor uses.
Switch K3 one end is connected with the input end that multimeter is measured display circuit, and the other end is connected the output signal that multimeter is measured input signal or connected direct-flow signal generator by conversion and control.
Because the portable field tester of the utility model design is to form with the multimeter transformation of the way, and framework and direct-flow signal generator circuit board between the front and rear covers of former multimeter, have been set up, therefore it can have the function of multimeter, has set up all kinds of direct current signals required when exporting all kinds of instrument check again.And its production cost is low, and compact conformation portably uses conveniently.
Below in conjunction with the embodiment accompanying drawing the utility model is described further:
Accompanying drawing 1 is the protecgulum and the movement of multimeter.
Accompanying drawing 2 is direct-flow signal generator circuit board and framework.
Accompanying drawing 3 is the bonnet of multimeter.
Accompanying drawing 4 is the switch connection diagram of embodiment.
In the accompanying drawing: 1. the protecgulum of multimeter and movement, 2. the bonnet of multimeter, 3. additional frame, 4. direct-flow signal generator circuit board, K1, K2, K3 switch, 5-9. DC simulation signal output plughole, 10. charging jack, 11. verification IDB distributors, the constant current output plughole that the IDB security device is used, 12. adjustable output voltage, current adjusting knob, former multimeter panel remains unchanged.
During installation direct-flow signal generator circuit board 4 is fixed on the additional frame 3, protecgulum with multimeter is connected with the A face of additional frame 3 with movement 1 again, the bonnet 2 of multimeter is connected with the B face of additional frame 3, additional frame 3 sides are equipped with 4mA (1V)/20mA (5V)/0-20mA (0-5V) switch K1, V/mV/mA switch K2, measurement/output change-over switch K3
In the accompanying drawing 4: switch K1 has three kinds of conducting states, and three kinds of signals of may command output: a kind of is 4mA set value signal output state, and second kind is 20mA definite value output state, and the third is the adjustable output state of 0-20mA.
Switch K2 can make the output of switch K1 produce needed various checking signal: placed 1 o'clock, and be converted to V signal, placed 2 o'clock, be converted to the mV signal, placed 3 o'clock, signal remains unchanged.
Switch K3 has two states: placed 1 o'clock, and showed the measuring-signal input, placed 2 o'clock, show direct current signal output.
By the K1 conversion, make direct-flow signal generator that three kinds of different voltage inputs be arranged, three kinds of stable current signal 4mA, 20mA or 0-20mA of the corresponding respectively output of direct-flow signal generator.
When K2 put 1, dc output circuit was converted to voltage signal 1V, 5V, 0-5V output respectively with current signal (4mA, 20mA, 0-20mA).
When K2 puts 2, can make the 0-20mA signal be converted to the output of 0-100mA signal by the direct current signal output circuit.
When K2 put 3, three kinds of current signals were directly exported by the direct current signal output circuit, do not change.
The output of direct-flow signal generator can directly supply verification usefulness, also can switch to multimeter by K3 and show.
Claims (4)
1, the portable general-purpose on-site calibrator formed such as a kind of measurement, display circuit, casing, panel, button, function switch, signal generator by multimeter, it is characterized in that: between the loam cake of former multimeter and movement and bonnet, the direct-flow signal generator circuit board is arranged, this circuit board is fixed on the framework, framework and protecgulum and bonnet cooperate together, and frame facet has DC simulation signal output plughole, Signal Regulation knob and signal switch K1, K2, K3 to be connected with circuit board respectively.
2, portable general-purpose on-site calibrator according to claim 1, its feature also is: switch K1 one end is connected with the direct-flow signal generator input end, and the other end is connected with the voltage divider output terminal.
3, portable general-purpose on-site calibrator according to claim 1, its feature also is: switch K2 one end is connected with the output terminal of direct-flow signal generator, the other end is connected with direct current signal output circuit input end, adjustable signal by conversion output 0-5V, 0-100mV, 0-20mA, output 1V, 5V, 4mA, 20mA set value signal, the constant current signal that output 0-20mA distributor uses.
4, portable general-purpose on-site calibrator according to claim 1, its feature also is: switch K3 one end is connected with the input end that multimeter is measured display circuit, and the other end is connected the output signal that multimeter is measured input signal or connection signal generator by conversion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96214373 CN2251143Y (en) | 1996-07-08 | 1996-07-08 | Portable universal field checker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96214373 CN2251143Y (en) | 1996-07-08 | 1996-07-08 | Portable universal field checker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2251143Y true CN2251143Y (en) | 1997-04-02 |
Family
ID=33896502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96214373 Expired - Fee Related CN2251143Y (en) | 1996-07-08 | 1996-07-08 | Portable universal field checker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2251143Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466788A (en) * | 2010-11-03 | 2012-05-23 | 北京普源精电科技有限公司 | Universal meter calibration source |
| CN102565740A (en) * | 2011-12-29 | 2012-07-11 | 广东中钰科技有限公司 | Portable intelligent signal generation calibration device |
| CN112269346A (en) * | 2020-11-18 | 2021-01-26 | 崔家铭 | Intelligent instrument debugger |
-
1996
- 1996-07-08 CN CN 96214373 patent/CN2251143Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466788A (en) * | 2010-11-03 | 2012-05-23 | 北京普源精电科技有限公司 | Universal meter calibration source |
| CN102466788B (en) * | 2010-11-03 | 2016-08-03 | 北京普源精电科技有限公司 | Universal meter calibration source |
| CN102565740A (en) * | 2011-12-29 | 2012-07-11 | 广东中钰科技有限公司 | Portable intelligent signal generation calibration device |
| CN112269346A (en) * | 2020-11-18 | 2021-01-26 | 崔家铭 | Intelligent instrument debugger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 1997.04.02 |