CN203824614U - Novel liquid level measuring instrument - Google Patents
Novel liquid level measuring instrument Download PDFInfo
- Publication number
- CN203824614U CN203824614U CN201420186779.6U CN201420186779U CN203824614U CN 203824614 U CN203824614 U CN 203824614U CN 201420186779 U CN201420186779 U CN 201420186779U CN 203824614 U CN203824614 U CN 203824614U
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- current
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- resistance
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- measuring instrument
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model discloses a novel liquid level measuring instrument, which comprises a constant voltage source, a current detection unit, a switch, (N-1) shunt resistors, a current limiting resistor and an insulating rod, wherein N is larger than or equal to 10; the resistance values of the shunt resistors and the current limiting resistor are the same; one output end of the constant voltage source is connected with one input end of the current detection unit; the other input end of the current detection unit is connected with one end of the current limiting resistor; the other end of the current limiting resistor is connected with one end of the switch; the other end of the switch is connected with the other output end of the constant voltage source; (N-1) terminals are arranged on the insulating rod at equal intervals; one end of the ith shunt resistor is connected with one end of the current limiting resistor; the other end of the ith shunt resistor is connected with the ith terminal; the first terminal is connected with the other end of the current limiting resistor; the ith terminal is adjacent to the (i+1)th terminal, and i is larger than or equal to 1 and smaller than or equal to (N-1).
Description
Technical field
The utility model relates to a kind of novel liquid level measuring instrument.
Background technology
There is complex structure in conventional fluid level measuring instrument at present, and measuring accuracy is not high, the more high problems of supply voltage that measurement mechanism needs.Such as although Buoyancy-type level measuring instrument is simple in structure, just have the problem that measuring accuracy is not high, and poor anti jamming capability; Such as Ultrasonic Liquid Level Indicator just exists the more expensive problem of price.
Utility model content
In order to solve existing fluid level measuring instrument, have complex structure, measuring accuracy is not high, and the more high problems of supply voltage of measurement mechanism needs; The utility model provides a kind of fluid level measuring instrument, and this fluid level measuring instrument is simple in structure, and measuring accuracy is high, and price is lower, and the supply voltage needing is also lower.
The utility model solves the technical scheme that its technical matters adopts: novel liquid level measuring instrument, comprises constant pressure source, current detecting unit, switch, a N-1 shunt resistance, current-limiting resistance, insulation rod; N >=10;
The resistance of shunt resistance and current-limiting resistance equates;
An output terminal of constant pressure source connects an input end of current detecting unit, another input end of current detecting unit connects one end of current-limiting resistance, one end of the other end connecting valve of current-limiting resistance, the other end of switch connects another output terminal of constant pressure source;
Insulation rod equal intervals arranges N-1 connection terminal;
One end of i shunt resistance connects one end of current-limiting resistance, and the other end of i shunt resistance connects i connection terminal, and the 1st connection terminal connects the other end of current-limiting resistance simultaneously; I connection terminal is adjacent with i+1 connection terminal; Wherein, 1≤i≤N-1;
More excellent technical scheme, described current detecting unit adopts digital electronic ammeter to realize.
More excellent technical scheme, described N=1000.
Compare with prior art scheme, the beneficial effects of the utility model are: simple in structure, cost is lower, and measuring accuracy is high, and the supply voltage needing is lower, easy to carry.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
Wherein, the 1st, insulation rod.
Embodiment
below in conjunction with accompanying drawing, to the utility model is many, further describe.
Novel liquid level measuring instrument, comprises constant pressure source, current detecting unit, switch, 999 shunt resistances, current-limiting resistance, insulation rod; The resistance of shunt resistance and current-limiting resistance equates; An output terminal of constant pressure source connects an input end of current detecting unit, another input end of current detecting unit connects one end of current-limiting resistance, one end of the other end connecting valve of current-limiting resistance, the other end of switch connects another output terminal of constant pressure source; Insulation rod equal intervals arranges 1000 connection terminals; One end of i shunt resistance connects one end of current-limiting resistance, and the other end of i shunt resistance connects i connection terminal, and the 1st connection terminal connects the other end of current-limiting resistance simultaneously; Wherein, 1≤i≤999; I connection terminal is adjacent with i+1 connection terminal, such as the 2nd connection terminal is adjacent with the 3rd connection terminal.Wherein, described current detecting unit adopts digital electronic ammeter to realize.Constant pressure source is 10V's, and shunt resistance resistance is 1000 ohm.
In order to make those skilled in the art better understand the utility model, explain in detail again annexation of the present utility model below.
One has 999 shunt resistances, called after successively from the bottom to top in Fig. 1, and the 1st shunt resistance, the 2nd shunt resistance, the 3rd shunt resistance, the like; (in reality the name of current-limiting resistance and they put in order irrelevant)
Insulation rod is provided with altogether 999 connection terminals, by lower end to upper end called after the 1st connection terminal successively, the 2nd connection terminal, the 3rd connection terminal, the like;
One end of the 1st shunt resistance connects one end of current-limiting resistance, and the other end of the 1st shunt resistance connects the 1st connection terminal;
One end of the 2nd shunt resistance connects one end of current-limiting resistance, and the other end of the 2nd shunt resistance connects the 2nd connection terminal;
One end of the 3rd shunt resistance connects one end of current-limiting resistance, and the other end of the 3rd shunt resistance connects the 3rd connection terminal;
The like.Wherein the 1st connection terminal connects the other end of current-limiting resistance simultaneously.
Principle of work of the present utility model: when insulation rod is placed in liquid, a part for insulation rod is immersed in liquid, the shunt resistance branch road conducting of a part, because circuit voltage is constant, the all-in resistance of circuit is that R/i(i is the resistance quantity of conducting in circuit), so the linear variation of the reading of digital electronic ammeter, thereby reach the object of measuring liquid level.Because the spacing between the connection terminal of insulation rod can be very little, shunt resistance quantity can be a lot, and the precision of numerical value reometer is very high again, so that fluid level measuring instrument measuring accuracy of the present utility model can be done is very high.
Claims (3)
1. novel liquid level measuring instrument, is characterized in that, comprises constant pressure source, current detecting unit, switch, a N-1 shunt resistance, current-limiting resistance, insulation rod; N >=10;
The resistance of shunt resistance and current-limiting resistance equates;
An output terminal of constant pressure source connects an input end of current detecting unit, another input end of current detecting unit connects one end of current-limiting resistance, one end of the other end connecting valve of current-limiting resistance, the other end of switch connects another output terminal of constant pressure source;
Insulation rod equal intervals arranges N-1 connection terminal;
One end of i shunt resistance connects one end of current-limiting resistance, and the other end of i shunt resistance connects i connection terminal, and the 1st connection terminal connects the other end of current-limiting resistance simultaneously; I connection terminal is adjacent with i+1 connection terminal; Wherein, 1≤i≤N-1.
2. fluid level measuring instrument according to claim 1, is characterized in that, described current detecting unit adopts digital electronic ammeter to realize.
3. fluid level measuring instrument according to claim 1, is characterized in that, described N=1000.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420186779.6U CN203824614U (en) | 2014-04-17 | 2014-04-17 | Novel liquid level measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420186779.6U CN203824614U (en) | 2014-04-17 | 2014-04-17 | Novel liquid level measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203824614U true CN203824614U (en) | 2014-09-10 |
Family
ID=51480099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420186779.6U Expired - Fee Related CN203824614U (en) | 2014-04-17 | 2014-04-17 | Novel liquid level measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203824614U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109060076A (en) * | 2018-08-02 | 2018-12-21 | 重庆川仪自动化股份有限公司 | Resistance sensor and measuring system |
-
2014
- 2014-04-17 CN CN201420186779.6U patent/CN203824614U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109060076A (en) * | 2018-08-02 | 2018-12-21 | 重庆川仪自动化股份有限公司 | Resistance sensor and measuring system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20160417 |