CN2539173Y - Portable tester for oxygen and carbon dioxide - Google Patents
Portable tester for oxygen and carbon dioxide Download PDFInfo
- Publication number
- CN2539173Y CN2539173Y CN 02209452 CN02209452U CN2539173Y CN 2539173 Y CN2539173 Y CN 2539173Y CN 02209452 CN02209452 CN 02209452 CN 02209452 U CN02209452 U CN 02209452U CN 2539173 Y CN2539173 Y CN 2539173Y
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- CN
- China
- Prior art keywords
- carbon dioxide
- oxygen
- concentration
- gas
- circuit
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- Expired - Fee Related
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- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating Or Analysing Biological Materials (AREA)
Abstract
The utility model relates to a portable oxygen and carbon dioxide concentration tester, comprising an organic casing, wherein a digitron display window for oxygen concentration, a digitron display window for carbon dioxide concentration, an oxygen zero calibration knob, a carbon dioxide zero calibration knob, and an gas inlet are arranged to the outside of the organic casing. A sorting device of gas concentration connected with the gas inlet and a circuit converting electrical signals after concentration sorting process into digital quantities are arranged to the inside of the organic casing. The utility model has the advantages of simple structure, compact size, light weight, and easy portability, and realization of quick and highly precise (plus or minus 0.1%) oxygen and carbon dioxide concentration test.
Description
Technical field
The utility model relates to testing tool, particularly be portable oxygen and density of carbon dioxide gas testing tool.
Background technology
At present, generally adopt air-conditioned cold store fresh-keeping, also can adopt packed fresh-keeping a small amount of preserving fruit and vegetable utilizing to preserving fruit and vegetable utilizing in enormous quantities.No matter the sort of preservation device all requires its inner oxygen, carbon dioxide to keep certain concentration.Measure the oxygen and the density of carbon dioxide gas of a part in the preservation device, prior art is to adopt gas production, the method for Ce Lianging respectively respectively.There is complex process in this kind measuring method, and test speed waits defective slowly.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned technical deficiency, provides an energy gas production, measures the portable oxygen and the carbon dioxide tester of oxygen and density of carbon dioxide gas simultaneously
The utility model solves the used technical scheme of its technical matters: a kind of portable oxygen and carbon dioxide tester, the structure of this tester includes casing, and oxygen concentration charactron display window, density of carbon dioxide gas charactron display window, oxygen school zero knob, carbon dioxide gas sports school zero knob, gas production mouth are housed in the casing outside; The gas concentration sorting device and the circuit that the electrical signal conversion after the concentration go-on-go is become digital quantity that is communicated with the gas production mouth is housed in casing inside.
The utility model beneficial effect is: simple in structure, volume is little, and is in light weight, easy to carry.A gas production can realize detecting oxygen and density of carbon dioxide gas simultaneously, and speed is fast, the precision height, and precision can reach positive and negative 0.1%.
Description of drawings
Fig. 1 is the utility model structure connection diagram;
Fig. 2 is gas concentration sorting device A and the circuit B connection side block diagram that the electrical signal conversion after the concentration go-on-go is become digital quantity.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail: the utility model is a kind of portable oxygen and carbon dioxide tester, the structure of this tester includes casing 8, and oxygen concentration charactron display window 1, density of carbon dioxide gas charactron display window 2, oxygen school zero knob 3, carbon dioxide gas sports school zero knob 5, gas production mouth 4, power switch 7, air pump switch 6 are housed on casing 8 panels.The gas concentration sorting device A and the circuit B that the electrical signal conversion after the concentration go-on-go is become digital quantity that is communicated with gas production mouth 4 is housed in casing 8 inside.
Gas concentration sorting device A comprises air pump 16, density of carbon dioxide gas sensing chamber 17, oxygen concentration sensing chamber 20, the escape pipe P that connects successively.Carbon dioxide detecting head 18 and carrier of oxygen detecting head 19 are contained in respectively in density of carbon dioxide gas sensing chamber 17 and the oxygen concentration sensing chamber 20, the gas with various of once gathering is carried out concentration respectively detect, the electrical signal conversion after detecting head 18, the 19 connection go-on-gos becomes the circuit B of digital quantity.
Circuit B comprises: power supply 11 connects the infrared ray carbon dioxide sensor partial circuit 12 that is connected with carbon dioxide detecting head 18, the oxygen cell sensor part parallel circuit 13 that is connected with carrier of oxygen detecting head 19, oxygen and carbon dioxide test section circuit 14 respectively, and oxygen is connected analog quantity/digital quantity conversion portion circuit 15, oxygen concentration charactron display window 1, density of carbon dioxide gas charactron display window 2 successively with carbon dioxide test section circuit 14.
Portable handle 21 is equipped with in casing 8 outsides.
Below the course of work of the present utility model is described: air collecting pipe and gas production mouth 4 are connected, turned on the power switch 7 and adjust 5 pairs zero of the zero knobs of oxygen school zero knob 3 and carbon dioxide gas sports school.Open air pump switch 6, carbon dioxide detecting head 18 in gas concentration sorting device A and carrier of oxygen detecting head 19 detect the gas concentration that is contained in density of carbon dioxide gas sensing chamber 17 and the oxygen concentration sensing chamber 20 respectively, the electricity consumption aspect stores and feeds back to infrared ray carbon dioxide sensor partial circuit 12 and oxygen cell sensor part parallel circuit 13, detect respectively through oxygen and carbon dioxide test section circuit 14, again after analog quantity/digital quantity conversion portion circuit 15 converts the electrical signal to numeral, be presented at oxygen concentration charactron display window 1 and density of carbon dioxide gas charactron display window 2, can read oxygen and gas concentration lwevel numerical value simultaneously.
Claims (4)
1. portable oxygen and carbon dioxide tester, the structure that it is characterized in that this tester includes casing (8), and oxygen concentration charactron display window (1), density of carbon dioxide gas charactron display window (2), oxygen school zero knob (3), carbon dioxide gas sports school zero knob (5), gas production mouth (4) are housed in casing (8) outside; The gas concentration sorting device (A) and the circuit (B) that the electrical signal conversion after the concentration go-on-go is become digital quantity that is communicated with gas production mouth (4) is housed in casing (8) inside.
2. according to the tester described in the claim 1, it is characterized in that described gas concentration sorting device (A) comprises interconnective air pump (16), density of carbon dioxide gas sensing chamber (17), oxygen concentration sensing chamber (20), escape pipe (P), carbon dioxide detecting head (18) and carrier of oxygen detecting head (19) are contained in respectively in density of carbon dioxide gas sensing chamber (17) and the oxygen concentration sensing chamber (20).
3. according to the tester described in the claim 1, it is characterized in that described circuit (B) comprising: power supply (11) connects the infrared ray carbon dioxide sensor partial circuit (12) that is connected with carbon dioxide detecting head (18) respectively, the oxygen cell sensor part parallel circuit (13) that is connected with carrier of oxygen detecting head (19), oxygen and carbon dioxide test section circuit (14), oxygen is connected analog quantity/digital quantity conversion portion circuit (15) successively with carbon dioxide test section circuit (14), oxygen concentration charactron display window (1), density of carbon dioxide gas charactron display window (2).
4. according to the tester described in the claim 1, it is characterized in that casing (8) outside is equipped with portable device (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02209452 CN2539173Y (en) | 2002-04-05 | 2002-04-05 | Portable tester for oxygen and carbon dioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02209452 CN2539173Y (en) | 2002-04-05 | 2002-04-05 | Portable tester for oxygen and carbon dioxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2539173Y true CN2539173Y (en) | 2003-03-05 |
Family
ID=33689865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02209452 Expired - Fee Related CN2539173Y (en) | 2002-04-05 | 2002-04-05 | Portable tester for oxygen and carbon dioxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2539173Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013083046A1 (en) * | 2011-12-09 | 2013-06-13 | 深圳迈瑞生物医疗电子股份有限公司 | Gas measurement method, device and interfering gas compensation device |
| CN104266991A (en) * | 2014-10-22 | 2015-01-07 | 中山欧麦克仪器设备有限公司 | Portable gas detector |
-
2002
- 2002-04-05 CN CN 02209452 patent/CN2539173Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013083046A1 (en) * | 2011-12-09 | 2013-06-13 | 深圳迈瑞生物医疗电子股份有限公司 | Gas measurement method, device and interfering gas compensation device |
| CN103163102A (en) * | 2011-12-09 | 2013-06-19 | 深圳迈瑞生物医疗电子股份有限公司 | Gas measurement method, gas measurement equipment and interference gas compensation device |
| CN103163102B (en) * | 2011-12-09 | 2017-07-18 | 深圳迈瑞生物医疗电子股份有限公司 | A kind of gas measuring method, equipment and interference gas compensation device |
| CN104266991A (en) * | 2014-10-22 | 2015-01-07 | 中山欧麦克仪器设备有限公司 | Portable gas detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030305 Termination date: 20110405 |