CN2136974Y - Operating test meter for automatic balance display record instrument - Google Patents
Operating test meter for automatic balance display record instrument Download PDFInfo
- Publication number
- CN2136974Y CN2136974Y CN 92219016 CN92219016U CN2136974Y CN 2136974 Y CN2136974 Y CN 2136974Y CN 92219016 CN92219016 CN 92219016 CN 92219016 U CN92219016 U CN 92219016U CN 2136974 Y CN2136974 Y CN 2136974Y
- Authority
- CN
- China
- Prior art keywords
- instrument
- balance display
- display record
- automatic balance
- multiple spot
- 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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- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model provides an operating test meter for an automatic balance display record instrument. The operating test meter for an automatic balance display record instrument can be used for an electronic potentiometer, an electronic balance bridge, a single-point instrument and a multiple-point instrument. The operating test meter for an automatic balance display record instrument can conveniently check the reliability and the mechanical transmission of the continuous operation of an automatic balance display record instrument, and the installing and operating behavior of a paper recording mechanism. The operating test meter for an automatic balance display record instrument is suitable for manufacturers and users of automatic balance display record instruments.
Description
The utility model provides a kind of instrument of self-poise displayed record instrument running test, belongs to instrument field.
Existing self-poise displayed record instrument running test instrument has significant limitation.What be used for electron potentiometer can not be used for the electronic equilibrium electric bridge, and what be used for single-point can not be used for multiple spot, very inconvenient in actual applications.
The utility model task provides a kind of through improved self-poise displayed record instrument running test instrument.Electron potentiometer can be used for, the electronic equilibrium electric bridge can be used for again; The single-point instrument can be used for, the multiple spot instrument can be used for again.Can examine continuous maintainability of self-poise displayed record instrument and mechanical drive, the installation of paper feed recording mechanism, working condition easily, carry out the long-play test.
Task of the present utility model is finished like this.Adopt a multiple spot dividing potential drop, divide resistance circuit to combine, export a scalable, convertible voltage, resistance signal and send into tested instrument, reach purpose single-point, multiple spot electron potentiometer and electronic equilibrium electric bridge running test with no stable state change-over circuit.
Elaborate below in conjunction with 1 pair of the utility model of accompanying drawing.
As shown in Figure 1, multiple spot dividing potential drop branch resistance part branch is to utilize an adjustable electric current, by the resistance in series (R of a series of band taps
1-R
11) form bleeder circuit, when deenergization, a series of resistance in seriess are formed a branch resistance circuit again.Ohmically voltage drop of whole string and resistance value can be passed through initial point, terminal point potentiometer W
1, W
2Increase and decrease, range of adjustment is 0-300 millivolt or 10-350 ohm.The multiple spot dividing potential drop adopts the simple stabilized voltage supply power supply of series diode, pea lamp ZD
2Except that doing voltage regulation resistance, also can be used for indicating feed circuit whether normal.No stable state conversion portion is by time-base integrated circuit I
0Form with Resistor-Capacitor Unit and relay, by timing capacitor C
4Discharge and recharge, make I
0Output voltage upset changes, the pilot relay action, and its contact divides resistance part component voltage, resistance value to connect with tested instrument dividing potential drop, makes instrument indicate frequent variations, and variation range and time can necessarily be controlled.W
3Regulating relay actuation time, range of adjustment is 0-60 second.
Embodiment: with single-point electron potentiometer and multiple spot electronic equilibrium electric bridge is example.
1, single-point electron potentiometer.(1) instrument output "+", "-" end are inserted tested instrument "+", "-" terminal respectively; (2) with instrument switch K
2Put " single-point " position, K
3Put " electromotive force " position, K
4Put the initial point potentiometer; (3) connect instrument and tested instrument power, running pilot lamp ZD
3Bright, voltage signal V
1Add tested instrument, transfer W
1Make 20% left and right sides position of instrument indication at scale; (4) etc. behind the certain hour (adjustable), running pilot lamp ZD
3Put out, ZD
4Bright, change K switch
4Position and accent W
2, make 80% left and right sides position of instrument indication at scale.After more than mixing up, can begin normal running test.
2, multiple spot electronic equilibrium electric bridge (is example with 12).(1) draw two lines from instrument " A " end, insert tested instrument " C " and " B " terminal (" B " end should be serially connected at this moment) respectively, instrument 1-12 end is connected to tested instrument " A " 1-12 terminal successively; (2) with instrument switch K
2Put " multiple spot " position, K
3Put " resistance " position, connect tested instrument power, put the 1st point, regulate instrument W taking temperature
1Make the instrument indication at about 20% of scale; (3) the 12nd point is put in the conversion of being taken temperature, regulated instrument W
2, make 80% left and right sides position of instrument indication at scale; (4) open the conversion record switch of being taken temperature, can carry out running test.
Claims (3)
1, a kind of self-poise displayed record instrument running test instrument, it is characterized in that by the multiple spot dividing potential drop, divide resistance circuit and do not have the stable state change-over circuit and form, adjustable voltage or resistance signal in multiple spot dividing potential drop, the branch resistance circuit are connected by relay tip in the no stable state change-over circuit and the conversion of tested instrument.
2, instrument according to claim 1 is characterized in that the multiple spot dividing potential drop, divides in the resistance circuit, and the power supply of multiple spot dividing potential drop adopts series diode to form simple stabilized voltage supply, uses pea lamp ZD
2Do voltage regulation resistance.
3, instrument according to claim 1 is characterized in that not having in the stable state change-over circuit, and the employing time-base integrated circuit is a conversion element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92219016 CN2136974Y (en) | 1992-06-08 | 1992-06-08 | Operating test meter for automatic balance display record instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92219016 CN2136974Y (en) | 1992-06-08 | 1992-06-08 | Operating test meter for automatic balance display record instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2136974Y true CN2136974Y (en) | 1993-06-23 |
Family
ID=33766382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92219016 Expired - Fee Related CN2136974Y (en) | 1992-06-08 | 1992-06-08 | Operating test meter for automatic balance display record instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2136974Y (en) |
-
1992
- 1992-06-08 CN CN 92219016 patent/CN2136974Y/en not_active Expired - Fee Related
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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 |