CN202393725U - Portable acidometer - Google Patents
Portable acidometer Download PDFInfo
- Publication number
- CN202393725U CN202393725U CN2011204492295U CN201120449229U CN202393725U CN 202393725 U CN202393725 U CN 202393725U CN 2011204492295 U CN2011204492295 U CN 2011204492295U CN 201120449229 U CN201120449229 U CN 201120449229U CN 202393725 U CN202393725 U CN 202393725U
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- China
- Prior art keywords
- probe
- chip microcomputer
- pin
- circuit board
- display screen
- 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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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Abstract
The utility model discloses a portable acidometer which comprises a host, a handle and a probe, wherein the handle is installed at one end of the host; the probe is installed at the other end of the host by a connection port; the probe is in the structure that two probe pins are exposed out of a front end; a protective layer are arranged outside each probe pin; a battery is arranged in the handle; a circuit board is installed in the host; the front panel of the host is provided with a display screen, a switch and a knob for a regulating potentiometer; the battery is connected with the circuit board by the switch; and the display screen and the regulating potentiometer are both connected with the circuit board. Compared with the prior art, the portable acidometer has the advantages of simple structure and low cost, is convenient to use and is convenient to carry.
Description
Technical field
The utility model relates to the measuring instrument technical field to water hardness and acidity, is specifically related to a kind of portable acidity meter.
Background technology
At present the method major part that detects of China's water hardness is to adopt ionometer, but since the volume people of instrument own, weight he big, can not carry, and price comparison is expensive.
The utility model content
The purpose of the utility model is exactly the defective that exists to prior art, and a kind of portable acidity meter that can be convenient for carrying again simple in structure, with low cost is provided.
Its technical scheme is: comprise main frame with the handle that is installed in main frame one end, be installed in the probe of the main frame other end through interface, popping one's head in is two probe-type structures of bare front end, and there is protective layer the probe outside.In the said handle battery is installed, circuit board is installed in the main frame, the main frame front panel is provided with the knob of display screen, switch and regulator potentiometer; Said battery is connected with circuit board through switch, and display screen, regulator potentiometer all are connected with circuit board.
Wherein, Said circuit board comprises a single-chip microcomputer; 20 pin of this single-chip microcomputer are connected with an end of the positive pole of first electric capacity and switch; The other end of switch is connected with anode; The negative pole of first electric capacity is connected with 1 pin of single-chip microcomputer and an end of resistance, and 11 pin of single-chip microcomputer are connected with first probe of probe through regulator potentiometer, and 4 pin of single-chip microcomputer are connected with an end of an end of crystal oscillator and second electric capacity; 5 pin of single-chip microcomputer are connected with an end of the other end of crystal oscillator and the 3rd electric capacity, and the negative pole of second probe of the other end of the other end of resistance, second electric capacity, the other end of the 3rd electric capacity, probe, 10 pin of single-chip microcomputer and battery connects back ground connection; 13-19 pin of said single-chip microcomputer are connected with seven extremities of segment of display screen respectively, and its 6-9 pin is connected with four cathode terminals of display screen respectively.The model of said single-chip microcomputer is 89c2051.
The utility model has advantage simple in structure, easy to use, with low cost and that be convenient for carrying compared with prior art.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the utility model;
Fig. 2 is the circuit theory diagrams of a kind of embodiment of the utility model.
Embodiment
With reference to Fig. 1; A kind of portable acidity meter comprises main frame 2 and the handle 1 that is installed in main frame 2 one ends, is installed in the probe 3 of main frame 2 other ends through interface, and probe 3 is two probe-type structures of bare front end; Be respectively first probe 9 and second probe 10, there is protective layer the probe outside.In the said handle 1 battery 4 is installed, circuit board 5 is installed in the main frame 2, main frame 2 front panels are provided with the knob 6 of display screen 8, switch 7 and regulator potentiometer; Said battery 4 is connected with circuit board 5 through switch 7, and display screen 8 is connected with circuit board.
With reference to Fig. 2; Said circuit board comprises a single-chip microcomputer IC; 20 pin of this single-chip microcomputer IC are connected with an end of the positive pole of first capacitor C 1 and switch 7; The other end of switch 7 is connected with battery 4 positive poles; The negative pole of first capacitor C 1 is connected with 1 pin of single-chip microcomputer IC and an end of resistance R, and 11 pin of single-chip microcomputer IC are connected with first probe 9 of probe 3 through regulator potentiometer W, and 4 pin of single-chip microcomputer IC are connected with an end of the end of crystal oscillator Z and second capacitor C 2; 5 pin of single-chip microcomputer IC are connected with an end of the other end of crystal oscillator Z and the 3rd capacitor C 3, and second probe 10 of the other end of the other end of resistance R, second capacitor C 2, the other end of the 3rd capacitor C 3, probe 3,10 pin of single-chip microcomputer IC and the negative pole of battery 4 connect back ground connection; 13-19 pin of said single-chip microcomputer IC are connected with seven extremities of segment of display screen 8 respectively, and its 6-9 pin is connected with four cathode terminals of display screen 8 respectively.The model of said single-chip microcomputer IC is 89c2051.
When using the utility model, the probe of probe 3 front ends is inserted in the tested article, opening switch 7 can be from sense data on the display screen 8, and these data are the acidity of tested article.Single-chip microcomputer IC need write specific program and moves in this device.Regulator potentiometer W is used to regulate detection sensitivity and uses.
Claims (3)
1. portable acidity meter; Comprise main frame and be installed in the handle of main frame one end, be installed in the probe of the main frame other end through interface; Probe is two probe-type structures of bare front end, and there is protective layer the probe outside, it is characterized in that: battery is installed in the said handle; Circuit board is installed in the main frame, and the main frame front panel is provided with the knob of display screen, switch and regulator potentiometer; Said battery is connected with circuit board through switch, and display screen is connected with circuit board.
2. portable acidity meter according to claim 1; It is characterized in that: said circuit board comprises a single-chip microcomputer; 20 pin of this single-chip microcomputer are connected with an end of the positive pole of first electric capacity and switch; The other end of switch is connected with anode; The negative pole of first electric capacity is connected with 1 pin of single-chip microcomputer and an end of resistance, and 11 pin of single-chip microcomputer are connected with first probe of probe through regulator potentiometer, and 4 pin of single-chip microcomputer are connected with an end of an end of crystal oscillator and second electric capacity; 5 pin of single-chip microcomputer are connected with an end of the other end of crystal oscillator and the 3rd electric capacity, and the negative pole of second probe of the other end of the other end of resistance, second electric capacity, the other end of the 3rd electric capacity, probe, 10 pin of single-chip microcomputer and battery connects back ground connection; 13-19 pin of said single-chip microcomputer are connected with seven extremities of segment of display screen respectively, and its 6-9 pin is connected with four cathode terminals of display screen respectively.
3. portable acidity meter according to claim 1 is characterized in that: the model of said single-chip microcomputer is 89c2051.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204492295U CN202393725U (en) | 2011-11-15 | 2011-11-15 | Portable acidometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204492295U CN202393725U (en) | 2011-11-15 | 2011-11-15 | Portable acidometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202393725U true CN202393725U (en) | 2012-08-22 |
Family
ID=46668639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204492295U Expired - Fee Related CN202393725U (en) | 2011-11-15 | 2011-11-15 | Portable acidometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202393725U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403592A (en) * | 2015-10-26 | 2016-03-16 | 马国才 | Electronic pH value testing apparatus |
-
2011
- 2011-11-15 CN CN2011204492295U patent/CN202393725U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403592A (en) * | 2015-10-26 | 2016-03-16 | 马国才 | Electronic pH value testing apparatus |
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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 |
Granted publication date: 20120822 Termination date: 20201115 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |