CN106290208A - A kind of ozone concentration determinator - Google Patents
A kind of ozone concentration determinator Download PDFInfo
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- CN106290208A CN106290208A CN201610604398.9A CN201610604398A CN106290208A CN 106290208 A CN106290208 A CN 106290208A CN 201610604398 A CN201610604398 A CN 201610604398A CN 106290208 A CN106290208 A CN 106290208A
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- air chamber
- measured
- ultraviolet
- light
- veiling glare
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- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 230000004313 glare Effects 0.000 claims abstract description 28
- 230000003287 optical effect Effects 0.000 claims abstract description 10
- 238000010276 construction Methods 0.000 claims description 3
- 230000000747 cardiac effect Effects 0.000 claims description 2
- 238000011109 contamination Methods 0.000 abstract description 5
- 230000006641 stabilisation Effects 0.000 abstract description 4
- 238000011105 stabilization Methods 0.000 abstract description 4
- 239000011521 glass Substances 0.000 description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 239000007789 gas Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 239000010453 quartz Substances 0.000 description 8
- 230000003595 spectral effect Effects 0.000 description 8
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 7
- 229910052753 mercury Inorganic materials 0.000 description 7
- 238000005259 measurement Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 239000008186 active pharmaceutical agent Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/061—Sources
- G01N2201/06113—Coherent sources; lasers
- G01N2201/0612—Laser diodes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/064—Stray light conditioning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/068—Optics, miscellaneous
Abstract
A kind of ozone concentration determinator, including ultraviolet light emission device, air chamber to be measured, ultraviolet detector device, the entrance port of described air chamber to be measured injected by the ultraviolet light that wherein said ultraviolet light emission device sends, the emergent light of the exit portal of described air chamber to be measured is irradiated on described ultraviolet detector device after assembling, the front end light path of described ultraviolet detector device is provided with the veiling glare device that disappears, the described center disappearing veiling glare device has loophole, and described loophole is arranged on primary optical axis.The present invention solves prior art light source length stabilization time, starts the problem that voltage is high, the efficiency of light energy utilization is low, optical energy attenuation is fast.Improve the stability of air chamber light path simultaneously, improve contamination resistance, improve the ability of anti-veiling glare.
Description
Technical field
The present invention relates to ozone concentration detection apparatus field, a kind of ozone concentration determinator specifically, particularly one
Plant the ultraviolet photometer for detecting ozone concentration.
Background technology
Ozone is the minimum gas that in air, chemical property is active, has strong oxidizing property, greenhouse effect and uv absorption
Characteristic, and impact significant on weather, ecology, environment etc..Ozone is also in urban environment air of paramount importance two
One of secondary pollutant, are one of main reason of degradation contamination phenomenon under acid rain, photochemical fog, atmospheric visibility, also can be right
Human body causes serious harm.What ozone had become as developed country's air quality monitoring must survey project.Ozone also became in recent years
The primary pollutant in Some Domestic city, the monitoring of ozone has been subjected to extensive concern.
Ozone analyzer for environment Determination of ozone mainly has the most on the market: the 49i type of Thermo company of (1) U.S.
Ozone analyzer, 400 series ozone analysers of API company of (2) U.S., (3) Australia ECO company UV100 series smelly
Oxygen analyzer, 106,202,205,211 series ozone analysers of 2B company of (4) U.S..These products the most also have in a large number
Use, particularly Thermo company and the product of API company, it has also become the canonical reference product of domestic ozone monitoring.Above-mentioned product
Product all use Ultraviolet Photometric Method, one of standard method of Ultraviolet Photometric Method Ye Shi China surrounding air Determination of ozone.
Ultraviolet Photometric Method is to utilize ozone molecule to have the characteristic of obtained the maximum absorption at 254nm at wavelength, in conjunction with Bill-
Lambert's law calculates the concentration of ozone in sample gas, has and measures advantage easy, that rapid, capacity of resisting disturbance is strong.It is currently used for smelly
The ultraviolet photometer that oxygen measures mainly uses mercury lamp as light source, and light beam of light source is incident, at glass from one end of glass tubing air chamber
Alternately being passed through the reference gas removing ozone and the sample gas containing ozone in pipe air chamber, the other end at glass tubing air chamber uses light
Electric explorer gathers the optical signal passed through, and calculates ozone concentration by the signal gathered in the case of two kinds is carried out process.
There are the following problems for the existing ultraviolet photometer for Determination of ozone:
(1) use low pressure mercury lamp as light source, need longer pre-heat-stable time, need the startup voltage of kilovolt,
Light source luminescent dissipates so that capacity usage ratio is low to surrounding, and luminous energy can be decayed with the lengthening of the time of use, affects the longevity of equipment
Life.
(2) light beam that light source sends is directed through quartz window sheet and enters glass tubing air chamber, and in this mode, light beam freely enters
Air inlet chamber, only a small amount of light directly arrives detector, and most of light can reflect on air chamber wall, such that through air chamber
Light beam light path disunity, causes measurement result generation deviation.
(3) air chamber contamination resistance is poor, when front end preprocessing part to tested gas treatment thoroughly time, moisture or granule
Thing is deposited on air chamber wall and causes air chamber wall reflection characteristic to change, and can make a big impact measurement result.
(4) photodetector direct detection passes through air chamber the light beam through quartz window sheet, and this detection mode can be subject to
Interference of stray light so that the signal to noise ratio of detection declines.
(5) needing before photodetector photosurface to add a piece of UV interference filters, the transmitance of optical filter is relatively low, can be right
Luminous energy causes the biggest decay, reduces signal to noise ratio.
It is illustrated in figure 1 the existing Ultraviolet Photometric Method photometric schematic diagram of ozone analyzer medium ultraviolet.Low pressure mercury lamp 11
Light beam 12 part gone out enters glass tubing air chamber 14 through front end quartz window sheet 13, after passing through through the light beam of glass tubing air chamber 14
Again through 254nm narrow band pass filter 16 after end quartz window sheet 15, the light beam filtered through narrow band pass filter 16 arrives ultraviolet photoelectric
Survey device 17.The tested gas entering glass tubing air chamber 14 can produce absorption to the middle light beam of air chamber, utilizes UV photodetector
17 photosignals gathered can calculate gas concentration.There are the following problems for the existing ultraviolet photometer for Determination of ozone:
(1) low pressure mercury lamp 11 needs higher startup voltage (upper kilovolt), requires higher to drive circuit；Stabilization time
Long, need the preheating of several tens minutes to stablize；Light beam 12 dissipates, and capacity usage ratio is low；Along with the lengthening of the time of use, energy
Amount can accelerate decay, causes stability to decline, and needs frequently to demarcate.
(2) front end quartz window sheet 13 is flat glass plate, only serves the effect of printing opacity and sealing, and light beam is in air chamber
Free propagation state, can occur multiple reflections on air chamber wall, and the beam state of different incidence angles is inconsistent, causes every Shu Guang's
Light path is inconsistent.
(3) can reflect on glass tubing air chamber 14 inwall due to the light beam of significant proportion, if existed on air chamber wall
When steam or Particulate Pollution, the biggest reflection loss can be caused, cause the instability measuring signal.
(4) rear end quartz window sheet 15 the most only serves printing opacity and sealing function, and the adjustment to light beam is not contributed, and goes out more greatly
The light beam of firing angle is not up to UV photodetector 17.
(5) there is the spectral line of a plurality of wavelength due to low pressure mercury lamp 11, so needing to increase narrow band pass filter 16, only allowing
The light transmission of 254nm, the transmitance of general spike interference filter is relatively low, and only about 20%, so narrow-band-filter sector-meeting makes
Energy is substantially reduced.Above-mentioned existing scheme causes the efficiency of light energy utilization low, spuious wide, in order to improve power of test, and the side taked
Method is to increase light source power, increases air chamber length, increases the average time that data process, and so can cause that equipment volume is big, merit
Consumption is high, low-response.
The problems referred to above make existing ultraviolet photometer detectivity limited, need to use bigger light source power, longer
Air chamber light path and bigger volume make up drawbacks described above, thus improve ozone power of test, and this is also to cause existing equipment body
Long-pending big, power consumption height, the main cause of low-response.
Summary of the invention
It is an object of the invention to provide a kind of ozone concentration determinator, to reduce air chamber wall reflection light interference, improve letter
Make an uproar ratio.
The purpose of the present invention implements by the following technical programs:
A kind of ozone concentration determinator, including ultraviolet light emission device, air chamber to be measured, ultraviolet detector device, wherein
The entrance port of described air chamber to be measured injected by the ultraviolet light that described ultraviolet light emission device sends, the exit portal of described air chamber to be measured
Emergent light is irradiated on described ultraviolet detector device after assembling, and is provided with and disappears in the front end light path of described ultraviolet detector device
Veiling glare device, described in the disappear center of veiling glare device there is loophole, and described loophole is arranged on primary optical axis.
Preferably, the distance between veiling glare device and described air chamber exit portal to be measured that disappears described in disappears veiling glare device described in being more than
And the distance between described ultraviolet detector device.
Preferably, the veiling glare device that disappears described in is diaphragm.
Preferably, described loophole is circular or square.
Preferably, described air chamber to be measured is tubular construction, and the wall of described air chamber to be measured is provided with air inlet and gives vent to anger
Hole.
Preferably, described air inlet and described venthole are positioned at the two ends of described air chamber to be measured.
Preferably, being provided with projecting lens in the entrance port of described air chamber to be measured, the exit portal at described air chamber to be measured is provided with
Collecting lens, described ultraviolet light emission device is arranged on the focal position of described projecting lens, and described ultraviolet detector device sets
Put the rear at described diaphragm.
Preferably, described projecting lens, described collecting lens use with described air chamber to be measured and are tightly connected.
Preferably, described ultraviolet light emission device is ultraviolet LED lamp.
It is further preferred that the integrated spherical collecting lens in described ultraviolet LED lamp top, centre wavelength is 254nm and with arteries and veins
The arrowband deep ultraviolet LED that the mode of punching works.
The present invention solves prior art light source length stabilization time, startup voltage is high, the efficiency of light energy utilization is low, optical energy attenuation is fast
Problem.Improve the stability of air chamber light path simultaneously, improve contamination resistance, improve the ability of anti-veiling glare.
Accompanying drawing explanation
Below according to drawings and Examples, the present invention is described in further detail.
Fig. 1 is the schematic diagram of the existing ultraviolet photometer for Determination of ozone.In figure, 11 is low pressure mercury lamp bulb, and 12 are
The light beam that low pressure mercury lamp bulb sends, 13 is front end quartz window sheet, and 14 is glass tubing air chamber, and 15 is rear end quartz window sheet, and 16 are
254nm narrow band pass filter, 17 is UV photodetector.
Fig. 2 is the schematic diagram of a kind of ozone concentration determinator that the present invention proposes.In figure, 21 is ultraviolet LED, and 22 is purple
The light beam that outer LED sends, 23 is projecting lens, and 24 is glass tubing air chamber, and 25 is veiling glare, and 26 is collecting lens, and 27 is miscellaneous for disappearing
Light diaphragm, 28 is UV photodetector.
Fig. 3 is the spectral power distribution schematic diagram of ultraviolet LED.
Fig. 4 is the encapsulation schematic diagram of ultraviolet LED light source.
Fig. 5 is the lighting angle schematic diagram of ultraviolet LED.
Detailed description of the invention
As shown in Figure 2-5, the invention provides a kind of ozone concentration determinator, including ultraviolet light emission device, to be measured
Air chamber, ultraviolet detector device, the incidence of described air chamber to be measured injected by the ultraviolet light that wherein said ultraviolet light emission device sends
Mouthful, the emergent light of the exit portal of described air chamber to be measured is irradiated on described ultraviolet detector device, at described ultraviolet light after assembling
The front end light path of detection device is provided with the veiling glare device that disappears, described in the disappear center of veiling glare device there is loophole, and described
Unthreaded hole is arranged on primary optical axis.
Wherein, described ultraviolet detector device is UV photodetector, and described UV photodetector can be at light
Source luminescence spectral coverage has the photodetector of good spectral response, preferably ultraviolet enhancement photodiode detector.
The described distance disappeared between veiling glare device and described air chamber exit portal to be measured disappears veiling glare device with described described in being more than
Distance between ultraviolet detector device.
The described veiling glare device that disappears is diaphragm.UV photodetector is placed on the rear of last a piece of diaphragm for eliminating stray light.
Wherein, the foil of perforate centered by diaphragm, perforate can be square hole or circular hole, and diaphragm for eliminating stray light is placed on convergence
At the beam cross section minimum of lens rear.Diaphragm can have two or the thin metal of more than two center drillings the most at a distance
Sheet forms, and forms the multistage veiling glare that disappears.
Described loophole is circular or square.
Described air chamber to be measured is tubular construction, and the wall of described air chamber to be measured is provided with air inlet and venthole.
Described air inlet and described venthole are positioned at the two ends of described air chamber to be measured.
Being provided with projecting lens in the entrance port of described air chamber to be measured, the exit portal at described air chamber to be measured is provided with convergence thoroughly
Mirror, described ultraviolet light emission device is arranged on the focal position of described projecting lens, and described ultraviolet detector device is arranged on institute
State the rear of diaphragm.
Described projecting lens, described collecting lens use with described air chamber to be measured and are tightly connected.
Wherein, projecting lens is the convex lens with convergence function, and the material of employing has at deep ultraviolet spectral coverage and well passes through
Rate, and there is corrosion-resistant, the characteristic of not adsorbed gas, it is preferred to use JGS1 silica glass material.
Described collecting lens is convex lens, and the material of employing has good transmitance at deep ultraviolet spectral coverage, and has resistance to
Corrosion, the characteristic of not adsorbed gas, it is preferred to use JGS1 silica glass material.
Described ultraviolet light emission device is ultraviolet LED lamp.
Wherein, the arrowband deep ultraviolet LED that ultraviolet LED uses centre wavelength to be 254nm, the integrated spherical collecting lens in top,
Ultraviolet LED works in a pulsed fashion, improves service life and reduces average power consumption.
The present invention solves prior art light source length stabilization time, startup voltage is high, the efficiency of light energy utilization is low, optical energy attenuation is fast
Problem.Improve the stability of air chamber light path simultaneously, improve contamination resistance, improve the ability of anti-veiling glare.
In order to allow those skilled in the art become apparent from the creation objective of the present invention, it is embodied as below in conjunction with the accompanying drawings and with one
Example is illustrated:
As in figure 2 it is shown, light source uses ultraviolet LED 21, the light beam that ultraviolet LED 21 sends enters glass through projecting lens 23
Pipe air chamber 24, the ultraviolet light beam after projecting lens 23 is directly arrived by glass tubing air chamber 24 close to collimating status, major part
Collecting lens 26, the light beam through collecting lens 26 is quickly assembled, and places diaphragm for eliminating stray light 27 at the minimum of convergent beam cross section,
Diaphragm for eliminating stray light 27 is foil, central openings, and perforate can be circular or square.Control the size of diaphragm for eliminating stray light 27, make
Must only without glass tubing air chamber 24 inwall reflection light beam by the veiling glare perforate that disappears.Light beam through diaphragm for eliminating stray light 27 can arrive
Reach UV photodetector 28.In figure, 25 is the schematic diagram of a branch of veiling glare, and veiling glare is probably light or the warp that non-light source sends
The light beam that glass tubing air chamber 24 inwall reflected, can be stopped by diaphragm for eliminating stray light 27 after the concentrated lens of veiling glare 25 26, it is impossible to
Arrive detector.By adding collecting lens 26 and diaphragm for eliminating stray light 27, the efficiency of light energy utilization can not only be improved and can also effectively press down
Veiling glare processed, the light arriving detector all reflects without glass tubing air chamber 24 inwall, thus the pollution of air chamber inwall will not be to survey
Amount interferes, and is effectively improved the Stability and veracity of measurement.Ultraviolet LED 21 has luminous efficiency height, caloric value
Little, moment is luminous, therefore drive circuit is relatively easy, and can work in a pulsed mode, can be effectively improved response time and
Increase service life.
As it is shown on figure 3, the spectral power distribution that Fig. 3 is selected ultraviolet LED, the wherein a length of 254nm of cardiac wave, whole spectrum energy
Amount is all in the range of the characteristic absorption of ozone, and therefore luminous energy service efficiency is the highest.Owing to there is no other invalid spectral component, so
Without increasing ultraviolet spike interference filter before UV photodetector 28, conventional ultraviolet spike interference filter peak value is saturating
The rate of mistake only has about 20%, cancels ultraviolet narrow band pass filter and can be effectively improved the efficiency of light energy utilization of system.
As shown in Figure 4, Fig. 4 is the packing forms schematic diagram of the ultraviolet LED that this programme selects, at the top collection of ultraviolet LED
Glomeration collecting lens, so that the light beam of light source angle of divergence is the least.
As it is shown in figure 5, Fig. 5 is light beam of light source angle of divergence schematic diagram, the energy of more than 70% can concentrate on ± 7 ° within,
The energy of more than 95% concentrates on ± 15 ° within.The less angle of divergence is added and be have employed projecting lens so that light source sends
Light beam nearly all becomes to be used up, and strengthens the utilization rate that improve luminous energy.Under conditions of same measured index, light source can be made
Power is lower, air chamber is shorter, thus effectively reduces power consumption and the volume of equipment.
Compared with prior art, the invention has the beneficial effects as follows:
(1) ultraviolet LED of the little lighting angle using centre wavelength to be 254nm, and work in a pulsed fashion, there is body
Long-pending little, luminous efficiency is high, the efficiency of light energy utilization is high, power consumption is little, start that voltage is low, moment is stable, the advantage of life-span length.
(2) use lens on light source beam to nurse one's health, reduce beam divergence angle further and on the one hand improve the profit of luminous energy
By rate, on the other hand reduce air chamber wall reflection light interference, improve signal to noise ratio.
(3) eliminate air chamber wall and pollute the reflectance decline the caused impact on measurement result.
(4) use collecting lens and increase diaphragm for eliminating stray light, effectively suppressing veiling glare, reducing interference so that light path is more
Accurately, measurement result signal to noise ratio is higher.
(5) without using ultraviolet spike interference filter in the optical path, improve the efficiency of light energy utilization and signal to noise ratio, identical
Certainty of measurement shortens light path in the case of requiring further so that volume is less, is more beneficial for instrument miniaturization.
Last it is noted that the foregoing is only the preferred embodiment of invention, it is not limited to invention, although
Being described in detail invention with reference to previous embodiment, for a person skilled in the art, it still can be to front
State the technical scheme described in each embodiment to modify, or wherein portion of techniques feature is carried out equivalent.All send out
Within bright spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in invention protection domain it
In.
Claims (10)
1. an ozone concentration determinator, including ultraviolet light emission device, air chamber to be measured, ultraviolet detector device, Qi Zhongsuo
State the ultraviolet light that ultraviolet light emission device sends and inject the entrance port of described air chamber to be measured, going out of the exit portal of described air chamber to be measured
Penetrate after light is assembled and be irradiated on described ultraviolet detector device, it is characterised in that at the front end light of described ultraviolet detector device
Road is provided with the veiling glare device that disappears, described in the disappear center of veiling glare device there is loophole, and described loophole is arranged on primary optical axis
On.
2. device as claimed in claim 1, it is characterised in that described in disappear between veiling glare device and described air chamber exit portal to be measured
Distance be more than described in disappear the distance between veiling glare device and described ultraviolet detector device.
3. device as claimed in claim 1 or 2, it is characterised in that described in the veiling glare device that disappears be diaphragm.
4. device as claimed in claim 1 or 2, it is characterised in that described loophole is circular or square.
5. device as claimed in claim 1 or 2, it is characterised in that described air chamber to be measured is tubular construction, and described to be measured
The wall of air chamber is provided with air inlet and venthole.
6. device as claimed in claim 5, it is characterised in that described air inlet and described venthole are positioned at described air chamber to be measured
Two ends.
7. the device as described in claim 1 or 6, it is characterised in that be provided with projecting lens in the entrance port of described air chamber to be measured,
Exit portal at described air chamber to be measured is provided with collecting lens, and described ultraviolet light emission device is arranged on the focus of described projecting lens
Position, described ultraviolet detector device is arranged on the rear of described diaphragm.
8. device as claimed in claim 7, it is characterised in that described projecting lens, described collecting lens and described gas to be measured
Room uses and is tightly connected.
9. device as claimed in claim 1, it is characterised in that described ultraviolet light emission device is ultraviolet LED lamp.
10. device as claimed in claim 9, it is characterised in that the integrated spherical collecting lens in described ultraviolet LED lamp top, in
The a length of 254nm of cardiac wave and the arrowband deep ultraviolet LED worked in a pulsed fashion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610604398.9A CN106290208A (en) | 2016-07-28 | 2016-07-28 | A kind of ozone concentration determinator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610604398.9A CN106290208A (en) | 2016-07-28 | 2016-07-28 | A kind of ozone concentration determinator |
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| CN106290208A true CN106290208A (en) | 2017-01-04 |
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| CN201610604398.9A Pending CN106290208A (en) | 2016-07-28 | 2016-07-28 | A kind of ozone concentration determinator |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064039A (en) * | 2017-04-19 | 2017-08-18 | 中国电子科技集团公司第四十九研究所 | A kind of detection method of ozone monitoring sensor and its ozone concentration based on phase lock amplifying technology |
| CN107421906A (en) * | 2017-06-13 | 2017-12-01 | 淄博前沿医疗器械有限公司 | A kind of photometer of efficiently measurement concentration of ozone gas |
| CN107782689A (en) * | 2017-08-21 | 2018-03-09 | 深圳欧威奇科技有限公司 | Ozone gas concentration detection apparatus and ozone gas concentration detection method |
| CN107941730A (en) * | 2017-11-16 | 2018-04-20 | 广东上风环保科技有限公司 | A kind of method and apparatus for measuring Ozone in Atmosphere concentration |
| CN107966409A (en) * | 2017-12-29 | 2018-04-27 | 青岛崂应环境科技有限公司 | Gas concentration analysis method and device |
| CN109374536A (en) * | 2018-12-13 | 2019-02-22 | 青岛海纳光电环保有限公司 | Ozone concentration measurement device and method |
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