CN2510859Y - Infrared-ray tricrotism digit petroleum detector - Google Patents
Infrared-ray tricrotism digit petroleum detector Download PDFInfo
- Publication number
- CN2510859Y CN2510859Y CN 01275970 CN01275970U CN2510859Y CN 2510859 Y CN2510859 Y CN 2510859Y CN 01275970 CN01275970 CN 01275970 CN 01275970 U CN01275970 U CN 01275970U CN 2510859 Y CN2510859 Y CN 2510859Y
- Authority
- CN
- China
- Prior art keywords
- infrared
- detector
- monochromator
- light
- oil content
- 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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Abstract
The utility model relates to an infrared three wave oil measuring device for measuring the oil smoke discharge and the oil concentration of water in the catering services. The structure of the utility model comprises a light source, a modulator, a sample chamber, a monochromator, a detector and a signal processor. The modulator gives a fast alternate light signal which is given by the light source and the light signal traverses the sample chamber and enters the monochromator. An infrared light which has different wavelengths and is given by the monochromator is cast on the receiving surface of the detector. The electrical signal which is given by the detector is sent to the signal processor. The utility model can measure the absorbance of methylene, methyl and aromatic ring of the oil structure at three wave positions of 2930cm <-1>, 2960 cm <-1> and 3030 cm <-1>. And thus the oil concentration can be directly obtained by calculation. The utility model has the advantages of simple and reasonable structure, advanced technology, high sensitivity, fast analysis velocity, wide scanning range and good measure accuracy etc.
Description
Technical field
The utility model relates to a kind of instrument that adopts infrared spectrophotometer to measure oil content concentration in cooking fume discharging and the water.
Prior art
At present, measure the instrument of oil content concentration in cooking fume discharging and the water both at home and abroad, a kind of is to adopt general infrared spectrophotometer to measure, this instrument is not the instrument of special measurement oil content, therefore scanning wavelength scope with broad costs an arm and a leg, and operation is comparatively complicated; Another kind is special-purpose oil content analyzer, and it is low that special-purpose oil content analyzer exists sensitivity, poor stability, and sweep velocity waits shortcoming slowly.
Summary of the invention
The purpose of this utility model is a kind of simple and reasonable for structure, advanced technology of design, highly sensitive, analysis speed is fast, sweep limit is wide, precision of measurement is good infrared three wave number oil content analyzers.
The purpose of this utility model is achieved in that its structure is made up of light source, modulator, sample chamber, monochromator, detector and signal processor; The light that light source sends is exported the light signal of quick alternation through modulator, and light signal passes the sample chamber and enters monochromator, is precipitated on the receiving plane of detector by the infrared light of the different wave length of monochromator output, and the electric signal of detector output is delivered to signal processor.
Described monochromator comprises entrance slit, concave spherical mirror, echelette, exit slit, pass entrance slit by the light signal of sample chamber output and enter exit slit through concave spherical mirror, echelette and concave spherical mirror successively, and optical system is compensated automatically.
Described echelette links to each other with stepper motor by transmission shaft.
But what described detector adopted is the detector of cryogenic cooling.
Described signal processor comprises amplifying circuit, analog to digital conversion circuit and Computer Processing part.
Reference solution and sample solution are housed in the described sample chamber.
The utility model is owing to adopted said structure to carry out the mensuration of oil content concentration in cooking fume discharging and the water, and therefore, the utility model can be at 2930cm
-1, 2960cm
-1, 3030cm
-1Three beam location are measured the absorbance of methylene in the oil content structure, methyl, aromatic rings, directly draw oil content concentration by calculating then.The utlity model has simple and reasonable for structure, advanced technology, highly sensitive, advantage such as analysis speed is fast, sweep limit is wide, precision of measurement is good.
Description of drawings
Fig. 1 is the light path part structural representation of infrared three wave number oil content analyzers;
Fig. 2 is the structural principle synoptic diagram of infrared three wave number oil content analyzers.
Embodiment
Embodiment of the present utility model is as described below in conjunction with the accompanying drawings: its structure is made up of light source 1, modulator 2, sample chamber 3, monochromator 4, detector 5 and signal processor 6; The light that light source 1 sends is through the light signal S of the quick alternation of modulator 2 outputs, the light signal S of alternation passes sample chamber 3 and enters monochromator 4, infrared monochromatic light by the different wave length of monochromator 4 output is precipitated on the receiving plane of detector 5, and the electric signal of detector 5 outputs is delivered to signal processor 6.Described modulator 2 is the chopper wheel by synchronous motor control, and modulator 2 can make light beam form the light signal of quick alternation, about 800 cycle per seconds, thereby can realize to testing sample quick scanning, measure fast.The light signal S of described alternation enters sample chamber 3 through level crossing M1, condenser M2.In the described sample chamber 3 reference solution and sample solution are housed.
Described monochromator 4 comprises entrance slit S1, concave spherical mirror M3, M4, echelette G, exit slit S2, pass entrance slit S1 by the light signal of sample chamber 3 output and enter exit slit S2 through concave spherical mirror M3, echelette G and concave spherical mirror M4 successively, and optical system compensated automatically, eliminate light source drift, improve stability of instrument.
Described echelette G links to each other with stepper motor by transmission shaft, realize the linear wave long scan, and sweep limit is wide.
But what described detector 5 adopted is the detector of cryogenic cooling, the effect of detector 5 is to change light signal into electric signal, the temperature of detector is low more, the noise that is produced is more little, sensitivity is high more, therefore adopts the cryogenic cooling detector can make the sensitivity of whole instrument not be subjected to the influence of ambient temperature.
Described signal processor 6 comprises amplifying circuit, analog to digital conversion circuit and Computer Processing part, amplifying circuit and analog to digital conversion circuit convert the electric signal of detector 5 outputs to digital signal after amplifying, the Computer Processing part is carried out computing to above-mentioned digital signal, finally measure the oil content concentration value, the Computer Processing part prints measurement result by printer, also can be come out by screen display.
In use, G adjusts the scanning wave number by the rotation echelette, is implemented in 2930cm
-1, 2960cm
-1, 3030cm
-1Three beam location are measured the absorbance of methylene in the oil content structure, methyl, aromatic rings, directly draw oil content concentration by calculating then.Detector 5 is measured the light intensity I of reference solution and sample solution respectively during measurement
0And I, further utilize formula transmittance T=I/I
0* 100%, absorbance A=log (1/T) can calculate the oil content concentration C=K * A of sample solution, and wherein K is a scale parameter.When oil concentration changes in the sample solution, can measure I and A and variation, again by calculating the concentration C value.
Claims (6)
1, a kind of infrared three wave number oil content analyzers is characterized in that being made up of light source (1), modulator (2), sample chamber (3), monochromator (4), detector (5) and signal processor (6); The light that light source (1) sends is through the light signal of the quick alternation of modulator (2) output, light signal passes sample chamber (3) and enters monochromator (4), infrared light by the different wave length of monochromator (4) output is precipitated on the receiving plane of detector (5), and the electric signal of detector (5) output is delivered to signal processor (6).
2, infrared three wave number oil content analyzers according to claim 1, it is characterized in that described monochromator (4) comprises entrance slit (S1), concave spherical mirror (M3, M4), echelette (G), exit slit (S2), pass entrance slit (S1) and enter exit slit (S2) through concave spherical mirror (M3), echelette (G) and concave spherical mirror (M4) successively by the light signal of sample chamber (3) output.
3, infrared three wave number oil content analyzers according to claim 2 is characterized in that described echelette (G) links to each other with stepper motor by transmission shaft.
4, infrared three wave number oil content analyzers according to claim 1 is characterized in that described detector (5) but what adopt is the detector of cryogenic cooling.
5, infrared three wave number oil content analyzers according to claim 1 is characterized in that described signal processor (6) comprises amplifying circuit, analog to digital conversion circuit and Computer Processing part.
6, infrared three wave number oil content analyzers according to claim 1 is characterized in that in the described sample chamber (3) reference solution and sample solution being housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01275970 CN2510859Y (en) | 2001-12-06 | 2001-12-06 | Infrared-ray tricrotism digit petroleum detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01275970 CN2510859Y (en) | 2001-12-06 | 2001-12-06 | Infrared-ray tricrotism digit petroleum detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2510859Y true CN2510859Y (en) | 2002-09-11 |
Family
ID=33680251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01275970 Expired - Fee Related CN2510859Y (en) | 2001-12-06 | 2001-12-06 | Infrared-ray tricrotism digit petroleum detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2510859Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104345035A (en) * | 2014-11-13 | 2015-02-11 | 天津市能谱科技有限公司 | Full automatic infrared oil content analyzer |
| CN106596405A (en) * | 2016-12-22 | 2017-04-26 | 江苏国泰环境监测有限公司常熟分公司 | Measuring device for measuring concentration of water-soluble protein in water |
-
2001
- 2001-12-06 CN CN 01275970 patent/CN2510859Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104345035A (en) * | 2014-11-13 | 2015-02-11 | 天津市能谱科技有限公司 | Full automatic infrared oil content analyzer |
| CN106596405A (en) * | 2016-12-22 | 2017-04-26 | 江苏国泰环境监测有限公司常熟分公司 | Measuring device for measuring concentration of water-soluble protein in water |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: XIAMEN ASTAR TECHNOLOGY DEVELOPMENT CO.,LTD. Free format text: FORMER OWNER: CHEN XIAOTING Effective date: 20050701 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20050701 Address after: 361000 No. 3, software park complex building, torch hi tech Zone, Fujian, Xiamen, 3F-C Patentee after: XIAMEN ASTAR TECHNOLOGY DEVELOPMENT CO., LTD. Address before: 361005 room 15, building 401, new West Village, Xiamen University, Xiamen, Fujian Patentee before: Chen Xiaoting |
|
| 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 |