CN1869654A - On-line investigating method of liquid UV light and its automatic analysis recorder - Google Patents
On-line investigating method of liquid UV light and its automatic analysis recorder Download PDFInfo
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- CN1869654A CN1869654A CN 200510011809 CN200510011809A CN1869654A CN 1869654 A CN1869654 A CN 1869654A CN 200510011809 CN200510011809 CN 200510011809 CN 200510011809 A CN200510011809 A CN 200510011809A CN 1869654 A CN1869654 A CN 1869654A
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Abstract
The invention relates to a liquid UV light on-line detecting method and the automatic analysis recorder. And the method makes the light generated by UV light source vertically enter in to-be-detected sample, then converts the vertical light through optical module into horizontal light, and splits the light with light splitter and finally detects the strength of the split light. And the automatic analysis recorder arranges in turn UV light source, transflective film, calibration tank and a hollow cylinder on vertical light path from the top down, where at the bottom of the cylinder is a total reflector and a quartz plate is close the bottom and the cylinder wall between the quartz plate and total reflector is made with several small holes which can make measured liquid freely flow through; the calibration tank is a hollow quartz tank coated with total reflective film on the bottom surface; and arranges in turn light splitter and detector on horizontal light path from the transflective rightward. And the invention can eliminate drift and stray light and has highly accurate detection result.
Description
Technical field
The invention belongs to fields of measurement, specifically relate to a kind of liquid UV light online test method and automatic analysis recorder thereof.
Background technology
In commercial production, often need to note down and monitor in real time the content of certain material in the liquid by ultraviolet (comprising visible light) or infrared method.Existing Ultraviolet Detector---ultraviolet spectrophotometer as shown in Figure 1, it comprises a ultraviolet source 1, optical splitter 6, sample cell 8 and detecting device 7.During use, the light that ultraviolet source 1 produces is earlier through beam split part 6, and the light timesharing of different wave length enters detecting device 7 at last by the testing sample in the sample cell 8 then.
This Ultraviolet Detector all needs hand sampling, is difficult for realizing online detection, and when the needs on-line measurement, because light source is wanted long-play, energy jitter is bigger.What is more important, this method adopts first beam split, and the back is by sample cell, and online detection generally is difficult to the complete closed sample cell, the extraneous parasitic light of different wave length will enter detecting device inevitably simultaneously, thereby influences the accuracy of testing result.
Summary of the invention
Big, the testing result defects of low accuracy of energy jitter when the objective of the invention is to overcome the online detection of existing Ultraviolet Detector can be eliminated drift, eliminating parasitic light, liquid UV light online test method and automatic analysis recorder thereof that the testing result accuracy is high thereby provide a kind of.
The objective of the invention is to realize by the following technical solutions:
The invention provides the method for a kind of online test sample uv absorption (or seeing through), it vertically enters testing sample for the light that ultraviolet source is produced, see through the light that light changes horizontal direction into by optical module with what vertical reflection was returned then, re-use the light that optical splitter is told the wavelength that will measure; Detect the intensity after the beam split at last.
In the testing process, used standard model calibration measurement result greater than 5 seconds interval time, and the alignment time can be set arbitrarily at interval according to actual needs.
The invention provides the on-line automatic analysis recorder of a kind of liquid UV light, its synoptic diagram comprises as shown in Figure 2: 1, one optical splitter of a ultraviolet source 6, a detecting device 7 and a sample cell 8;
On the light path of vertical direction, be arranged in order ultraviolet source 1 from top to bottom, be the part reflective semitransparent film 2 of miter angle with perpendicular line, calibration pool 3, the cylinder 4 of one hollow, its bottom is a completely reflecting mirror 5, the place is a piezoid 9 near the bottom, on the barrel between piezoid 9 and the completely reflecting mirror 5, several apertures are arranged, make that measured liquid can the free flow mistake; Described calibration pool 3 plates the quartz cell of the hollow of the film that is all-trans for the bottom surface
On the light path in the horizontal direction, be arranged in order optical splitter 6 and detecting device 7 from left to right from part reflective semitransparent film 2.
During use, the hollow cylinder 4 of the on-line automatic analysis recorder of aforesaid liquid ultraviolet light vertically is immersed in the testing sample, did not have piezoid 9 with the liquid level of testing sample, and do not have the top of hollow cylinder 4 to be advisable near the bottom.On the light path of vertical direction, the light that produces by ultraviolet source 1 after collimating with miter angle incident part reflective semitransparent film 2, do not change direction after seeing through, behind the piezoid 9 of cylinder 4 (its top can keep apart light in the light path and the liquid in the sample cell) bottom surface of hollow, enter liquid to be measured, again after completely reflecting mirror 5 reflections, incide once more on the part reflective semitransparent film 2, after part reflective semitransparent film 2 reflections, enter optical splitter 6 with horizontal direction, after beam split, detect the light intensity of the wavelength that will measure by detecting device 7.
In the whole measuring process, calibration pool 3 is not blocked light path, have only when needs are calibrated and make calibration pool blocking-up light path by plant equipment, at this moment on the light path of vertical direction, the light that is produced by ultraviolet source 1 passes through calibration pool 3, after the fully reflecting surface reflection of calibration pool 3 bottom surfaces, pass through the reflection of part reflective semitransparent film 2 again, enter detecting device 7 with horizontal direction by optical splitter 6.Drift calibration measurement result by standard model.After the calibration, calibration pool 3 is removed, proceeded to measure by plant equipment.
Compared with prior art, the advantage of liquid UV light online test method provided by the invention and automatic analysis recorder thereof is:
The first, the hollow pipe that forms of the cylinder by hollow 4 and the piezoid simple optic such as (being equivalent to quartz window) of bottom thereof have realized real-time, the online detection in open sample cell, side by side except the influence of the parasitic light of extraneous different wave length;
The second, the method by the back beam split reduces the influence of parasitic light to measurement result, makes the accuracy of measurement result increase greatly;
Three, eliminate the drift of light source by timing handover measurement reference sample.
Description of drawings
Fig. 1 is the synoptic diagram of the ultraviolet spectrophotometer of prior art;
Fig. 2 is the synoptic diagram of the on-line automatic analysis recorder of a kind of liquid UV light provided by the invention;
1 ultraviolet source wherein, 2 part reflective semitransparent films, 3 calibration pools, 4 cylinders, 5 completely reflecting mirrors, 6 optical splitters, 7 detecting devices, 8 sample cells, 9 piezoids.
Embodiment
The on-line automatic analysis recorder of liquid UV light provided by the invention, its synoptic diagram comprises as shown in Figure 2: on the light path of vertical direction, be arranged in order ultraviolet source 1 from top to bottom, be the part reflective semitransparent film 2 of miter angle, the stainless steel cylinder 4 of calibration pool 3, one hollows and sample cell 8 with perpendicular line; The diameter of cylinder 4 is 30mm, and length is 50cm, is a completely reflecting mirror 5 in the bottom of tube, is a piezoid 9 near 1cm place, bottom, on the barrel between piezoid 9 and the completely reflecting mirror 5 several apertures is arranged, and makes measured liquid energy free flow mistake; Or stainless steel cylinder 4 is with piezoid 9 sealed bottoms, structure with rigidity between other one completely reflecting mirror 5 that separates and the cylinder 4 connects, as use stainless steel strip that completely reflecting mirror 5 is fixed to the lower end of cylinder 4,2 at a distance of 1cm, makes that measured liquid can the free flow mistake; Described calibration pool 3 plates the quartz cell of the hollow of the film that is all-trans for the bottom surface; On the light path in the horizontal direction, be arranged in order optical splitter 6 and detecting device 7 from left to right from part reflective semitransparent film 2.
Testing sample places open sample cell 8, during use, the hollow cylinder 4 of the on-line automatic analysis recorder of aforesaid liquid ultraviolet light vertically is immersed in the testing sample, did not have the piezoid 9 of close bottom with the liquid level of testing sample, and do not have the top of hollow cylinder 4 to be advisable.On the light path of vertical direction, the light that produces by ultraviolet source 1 after collimating with miter angle incident part reflective semitransparent film 2, do not change direction after seeing through, behind the piezoid 9 of cylinder 4 (its top can keep apart light in the light path and the liquid in the sample cell) bottom surface of hollow, enter liquid to be measured, again after completely reflecting mirror 5 reflections, incide once more on the part reflective semitransparent film 2, after part reflective semitransparent film 2 reflections, enter optical splitter 6 with horizontal direction, after beam split, detect the light intensity of the wavelength that will measure by detecting device 7.
In the whole measuring process, calibration pool 3 is not blocked light path, have only when needs are calibrated and make calibration pool blocking-up light path by plant equipment, at this moment on the light path of vertical direction, the light that is produced by ultraviolet source 1 passes through calibration pool 3, after the fully reflecting surface reflection of calibration pool 3 bottom surfaces, pass through the reflection of part reflective semitransparent film 2 again, enter detecting device 7 with horizontal direction by optical splitter 6.Drift calibration measurement result by standard model.After the calibration, calibration pool 3 is removed, proceeded to measure by plant equipment.
This method has significantly reduced the influence of parasitic light to measurement result by the back beam split, makes the accuracy of measurement result be increased.
Claims (3)
1, a kind of liquid UV light online test method, it vertically enters testing sample for the light that ultraviolet source is produced, see through the light that light changes horizontal direction into by optical module with what vertical reflection was returned then, re-use the light that optical splitter is told the wavelength that will measure; Detect the intensity after the beam split at last.
2, liquid UV light online test method as claimed in claim 1 is characterized in that: in testing process, used standard model calibration measurement result greater than 5 seconds interval time.
3, the on-line automatic analysis recorder of a kind of liquid UV light comprises: a ultraviolet source (1), and an optical splitter (6), a detecting device (7) and sample cell (8) is characterized in that:
On the light path of vertical direction, be arranged in order ultraviolet source (1) from top to bottom, be the part reflective semitransparent film (2) of miter angle with perpendicular line, calibration pool (3), the cylinder of one hollow (4), its bottom is a completely reflecting mirror (5), the place is a piezoid (9) near the bottom, on the barrel between piezoid (9) and the completely reflecting mirror (5), several apertures are arranged, make that measured liquid can the free flow mistake; Described calibration pool (3) plates the quartz cell of the hollow of the film that is all-trans for the bottom surface;
On the light path in the horizontal direction, be arranged in order optical splitter (6) and detecting device (7) from left to right from part reflective semitransparent film (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100118095A CN100437090C (en) | 2005-05-27 | 2005-05-27 | On-line investigating method of liquid UV light and its automatic analysis recorder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100118095A CN100437090C (en) | 2005-05-27 | 2005-05-27 | On-line investigating method of liquid UV light and its automatic analysis recorder |
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| Publication Number | Publication Date |
|---|---|
| CN1869654A true CN1869654A (en) | 2006-11-29 |
| CN100437090C CN100437090C (en) | 2008-11-26 |
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| CNB2005100118095A Expired - Fee Related CN100437090C (en) | 2005-05-27 | 2005-05-27 | On-line investigating method of liquid UV light and its automatic analysis recorder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101368847B (en) * | 2007-08-16 | 2011-07-20 | 深圳市海川实业股份有限公司 | Method for correcting physics ultraviolet light intensity measurer |
| CN108572145A (en) * | 2018-05-18 | 2018-09-25 | 中国科学院上海应用物理研究所 | A kind of reflective spectrum detection system |
| CN109100333A (en) * | 2018-09-21 | 2018-12-28 | 深圳市长隆科技有限公司 | Reflective probe and fluid on-line detector |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19856591C2 (en) * | 1998-12-08 | 2001-03-08 | Basf Ag | Device for the spectroscopic analysis of a fluid medium by means of attenuated reflection |
| CN1510413A (en) * | 2002-12-26 | 2004-07-07 | 南开大学 | Optical parameter measuring apparatus |
-
2005
- 2005-05-27 CN CNB2005100118095A patent/CN100437090C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101368847B (en) * | 2007-08-16 | 2011-07-20 | 深圳市海川实业股份有限公司 | Method for correcting physics ultraviolet light intensity measurer |
| CN108572145A (en) * | 2018-05-18 | 2018-09-25 | 中国科学院上海应用物理研究所 | A kind of reflective spectrum detection system |
| CN109100333A (en) * | 2018-09-21 | 2018-12-28 | 深圳市长隆科技有限公司 | Reflective probe and fluid on-line detector |
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| Publication number | Publication date |
|---|---|
| CN100437090C (en) | 2008-11-26 |
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Granted publication date: 20081126 Termination date: 20130527 |