CN209624376U - A kind of gamut infrared gas sensor based on NDIR - Google Patents
A kind of gamut infrared gas sensor based on NDIR Download PDFInfo
- Publication number
- CN209624376U CN209624376U CN201920139875.8U CN201920139875U CN209624376U CN 209624376 U CN209624376 U CN 209624376U CN 201920139875 U CN201920139875 U CN 201920139875U CN 209624376 U CN209624376 U CN 209624376U
- Authority
- CN
- China
- Prior art keywords
- detector
- light source
- reflective
- long cavity
- gamut
- 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.)
- Active
Links
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model discloses a kind of gamut infrared gas sensor based on NDIR, including long cavity, light source, two 45 DEG C reflective and diaphotoscopes with optical channel and gas chamber function, three detectors；One end of long cavity is arranged in light source, and the light beam of light source transmitting is projected to the other end of long cavity along the length direction of long cavity；Two 45 DEG C reflective and diaphotoscopes are respectively the first and second 45 DEG C of reflective and diaphotoscopes；The first and second 45 DEG C reflective and diaphotoscope is set gradually along the optical path direction of light source, and respectively reflexes to reflected light outside long cavity perpendicular to optical path direction；Three detectors are respectively the first, second and third detector；The one end of long cavity far from light source is arranged in first detector；Second and third detector is corresponding to be mounted on two 45 DEG C reflective simultaneous diaphotoscope reflected light optical path directions.This sensor can carry out the detection of minimum gas under the premise of guaranteeing precision, and can be detected with full scale, to realize that gamut, high-precision detect.
Description
Technical field
The utility model relates to infrared gas sensor fields, more specifically to a kind of gamut based on NDIR
Infrared gas sensor.
Background technique
Infrared gas sensor is a kind of near infrared spectrum selection absorption characteristic based on gas with various molecule, utilizes gas
Concentration and absorption intensity relationship (Lambert-Beer Lambert-Beer law)) identify gas component and determines the gas of its concentration
Sensing device.Wherein, NDIR method is the mainstream technology in infrared gas detection, and NDIR full name is Non-Dispersive
Infrared Absorption, i.e. non-dispersive infrared method are also known as non-dispersion infrared absorption analysis.
Infrared gas sensor and other classification gas sensor such as electric chemical formulas based on NDIR design, catalysis are burnt
Formula, semiconductor-type etc. compare have be widely used, long service life, high sensitivity, stability are good, are suitble to that gas is more, cost performance
It is high, maintenance cost is low, can on-line analysis etc. series of advantages.It is widely used in petrochemical industry, metallurgical industry, industrial and mineral are opened
It adopts, atmosphere pollution detection, the fields such as agricultural, health care.
Infrared gas sensor is mainly made of key components such as infrared light supply, gas chamber, infrared detectors.Infrared-gas
The characteristics of sensor meets langbobier law, therefore there is room detection high concentration of losing heart, long gas chamber detection low concentration.But it senses
Device gas chamber is certain, therefore range can not get both with precision, i.e., high concentration when not can guarantee the precision of low concentration point；Low concentration
When precision is high, high concentration spot not can guarantee precision.
Utility model content
The technical problem to be solved by the present invention is in view of the above drawbacks of the prior art, provide one kind and be based on
The gamut infrared gas sensor of NDIR.The utility model sensor can carry out trace gas under the premise of guaranteeing precision
The detection of body, and can be detected with full scale, to realize that gamut, high-precision detect.
The technical scheme adopted by the utility model to solve the technical problem is as follows: it is red to provide a kind of gamut based on NDIR
Outer gas sensor, including with optical channel and gas chamber function long cavity, light source, two 45 DEG C reflective and diaphotoscopes, three
A detector；One end of long cavity is arranged in the light source, and the light beam of light source transmitting is projected to along the length direction of long cavity
The other end of long cavity；Two described 45 DEG C reflective simultaneous diaphotoscopes are respectively that the one 45 DEG C of reflective and diaphotoscope and the 2nd 45 DEG C are anti-
Light and diaphotoscope；One 45 DEG C of reflective and diaphotoscope and the 2nd 45 DEG C of reflective simultaneous diaphotoscope are successively set along the optical path direction of light source
It sets, and respectively reflexes to reflected light outside long cavity perpendicular to optical path direction；Three detectors are respectively the first detector, second
Detector, third detector；The one end of long cavity far from light source is arranged in first detector；Second detector,
Three detectors are corresponding to be mounted on two 45 DEG C reflective simultaneous diaphotoscope reflected light optical path directions.
Gamut infrared gas sensor described in the utility model based on NDIR, wherein the end of the long cavity
Light source output hole is equipped with outer wall；Light source output hole respectively corresponds the installation site of three detectors.
Gamut infrared gas sensor described in the utility model based on NDIR, wherein the outer wall of the long cavity
Equipped with air inlet and venthole；The air inlet is arranged close to the side of light source, and the venthole is positioned close to the first detection
The side of device.
Gamut infrared gas sensor described in the utility model based on NDIR, wherein the light source is high power
Infrared light supply.
Gamut infrared gas sensor described in the utility model based on NDIR, wherein the inner wall of the long cavity
Finish is 0.8.
Gamut infrared gas sensor described in the utility model based on NDIR, wherein first detector,
Two detectors, third detector are infrared detector.
The gamut infrared gas sensor based on NDIR for implementing the utility model, has the advantages that
The application is based on molecule absorption principle detection gas concentration, is not easy to be poisoned, and the service life is long, fast response time, and precision is high.
The long cavity length design of the application is longer, to meet low concentration detection；Inside cavity different location design have 45 DEG C it is reflective simultaneous
Diaphotoscope, when the light that light source issues reaches mirror surface, a part of light reflection reaches detector, a part of light transmission.According to mirror surface
The difference of installation site can get the infrared light of different light paths, therefore, can gamut detection, ensure that detection accuracy.
Detailed description of the invention
Below in conjunction with accompanying drawings and embodiments, the utility model is described in further detail, in attached drawing:
Fig. 1 is the pole spray-painting plant structural schematic diagram of the utility model preferred embodiment；
Wherein, 1, long cavity；2, light source；3, the one 45 DEG C of reflective and diaphotoscope；4, the 2nd 45 DEG C of reflective and diaphotoscope；5,
First detector；6, the second detector；7, third detector；8, light source output hole；9, air inlet；10, venthole.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to the utility model:
As shown in Figure 1, a kind of gamut infrared gas sensor based on NDIR, including with optical channel and gas chamber function
The long cavity 1 of energy, 2, two 45 DEG C of light source reflective and diaphotoscopes, three detectors；One end of long cavity is arranged in the light source,
The light beam of light source transmitting is projected to the other end of long cavity along the length direction of long cavity；Two described 45 DEG C reflective and transmissions
Mirror is respectively the one 45 DEG C of reflective and diaphotoscope 3 and the 2nd 45 DEG C of reflective and diaphotoscope 4；One 45 DEG C reflective and diaphotoscope and the
2 45 DEG C of reflective simultaneous diaphotoscopes are set gradually along the optical path direction of light source, and respectively reflect reflected light perpendicular to optical path direction
Outside to long cavity；Three detectors are respectively the first detector 5, the second detector 6, third detector 7；First detector
The one end of long cavity far from light source is set；Second detector, third detector be corresponding be mounted on two 45 DEG C it is reflective simultaneous
On diaphotoscope reflected light optical path direction.
Wherein, 45 DEG C of reflective and diaphotoscopes, can meet reflection function, and can meet transmission function.In addition, 45 DEG C reflective
And 45 ° of settings of diaphotoscope, on optical path direction, detector installation site is corresponding with 45 DEG C of reflective mirrors, allows reflected light is through to detect
Device.In addition, this 45 DEG C reflective and diaphotoscope installation sites are adjustable, that is to say, that not according to mirror surface installation site
Together, can get the infrared light of different light paths, therefore, can gamut detection, ensure that detection accuracy.
As further preferred scheme, the end of the long cavity and outer wall are equipped with light source output hole 8；Light source output hole point
Not Dui Ying three detectors installation site.
As further preferred scheme, the outer wall of the long cavity is equipped with air inlet 9 and venthole 10；The air inlet is set
The side of close to sources is rested against, the venthole is positioned close to the side of the first detector.
As further preferred scheme, the light source is high power infrared light supply.The infrared light warp that power light source issues
Multiple reflections are crossed, light intensity still meets detection and analysis demand.
As further preferred scheme, inside cavity is the gas chamber for the detection of more concentration gases, and gas chamber inner wall keeps light
Bright, the inner wall finish of the long cavity is 0.8.
As further preferred scheme, first detector, the second detector, third detector are infrared acquisition
Device.
It will be apparent to those skilled in the art that can technical solution and design as described above, make various other phases
The change and deformation answered, and all these changes and deformation all should belong to the protection model of the utility model claims
Within enclosing.
Claims (6)
1. a kind of gamut infrared gas sensor based on NDIR, which is characterized in that including with optical channel and gas chamber function
Long cavity, light source, the two 45 DEG C reflective and diaphotoscopes of energy, three detectors；One end of long cavity, light is arranged in the light source
The light beam of source transmitting is projected to the other end of long cavity along the length direction of long cavity；Two described 45 DEG C reflective and diaphotoscopes
Respectively the one 45 DEG C reflective and diaphotoscope and the 2nd 45 DEG C of reflective and diaphotoscope；One 45 DEG C of reflective and diaphotoscope and the 2nd 45
DEG C reflective and diaphotoscope is set gradually along the optical path direction of light source, and reflected light is reflexed to length perpendicular to optical path direction respectively
Outside cavity；Three detectors are respectively the first detector, the second detector, third detector；The first detector setting exists
The one end of long cavity far from light source；Second detector, third detector are corresponding to be mounted on two 45 DEG C reflective and diaphotoscopes
On reflected light optical path direction.
2. the gamut infrared gas sensor based on NDIR as described in claim 1, which is characterized in that the long cavity
End and outer wall are equipped with light source output hole；Light source output hole respectively corresponds the installation site of three detectors.
3. the gamut infrared gas sensor based on NDIR as described in claim 1, which is characterized in that the long cavity
Outer wall is equipped with air inlet and venthole；The air inlet is arranged close to the side of light source, and the venthole is positioned close to first
The side of detector.
4. the gamut infrared gas sensor based on NDIR as described in claim 1, which is characterized in that the light source is height
Power infrared light supply.
5. the gamut infrared gas sensor based on NDIR as described in claim 1, which is characterized in that the long cavity
Inner wall finish is 0.8.
6. the gamut infrared gas sensor based on NDIR as described in claim 1, which is characterized in that first detection
Device, the second detector, third detector are infrared detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920139875.8U CN209624376U (en) | 2019-01-24 | 2019-01-24 | A kind of gamut infrared gas sensor based on NDIR |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920139875.8U CN209624376U (en) | 2019-01-24 | 2019-01-24 | A kind of gamut infrared gas sensor based on NDIR |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209624376U true CN209624376U (en) | 2019-11-12 |
Family
ID=68452035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920139875.8U Active CN209624376U (en) | 2019-01-24 | 2019-01-24 | A kind of gamut infrared gas sensor based on NDIR |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209624376U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113324934A (en) * | 2021-06-16 | 2021-08-31 | 深圳市英宝硕科技有限公司 | Gas detection positioning system |
| CN114136911A (en) * | 2021-11-22 | 2022-03-04 | 深圳市诺安环境安全股份有限公司 | Gas sensor with measuring range and resolution ratio and implementation method |
| CN117250166A (en) * | 2023-09-21 | 2023-12-19 | 江苏舒茨测控设备股份有限公司 | Non-spectroscopic infrared gas detection method and sensor |
-
2019
- 2019-01-24 CN CN201920139875.8U patent/CN209624376U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113324934A (en) * | 2021-06-16 | 2021-08-31 | 深圳市英宝硕科技有限公司 | Gas detection positioning system |
| CN114136911A (en) * | 2021-11-22 | 2022-03-04 | 深圳市诺安环境安全股份有限公司 | Gas sensor with measuring range and resolution ratio and implementation method |
| CN117250166A (en) * | 2023-09-21 | 2023-12-19 | 江苏舒茨测控设备股份有限公司 | Non-spectroscopic infrared gas detection method and sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209624376U (en) | A kind of gamut infrared gas sensor based on NDIR | |
| CN1908623B (en) | Multi-component infrared online gas analyzer | |
| CN105424635A (en) | Ultraviolet spectrum flue gas analyzer | |
| CN108106998A (en) | Atmosphere pollution detection device and detection method | |
| CN106990065B (en) | Non-spectroscopic infrared gas sensor for multi-region and multi-gas measurement | |
| CN106959262B (en) | Unpowered dust detection system, device and detection method based on optics | |
| CN105510266A (en) | Harmful gas monitoring system based on infrared absorption spectrum | |
| CN103217369A (en) | Field lampblack test device | |
| CN114460037A (en) | Ammonia gas mass laser remote measuring device | |
| CN205317662U (en) | UV spectrum flue gas analyzer | |
| CN2426148Y (en) | Infrared sulfur dioxide analysis instrument | |
| CN110361354B (en) | Multi-gas concentration detection device, manufacturing method thereof and alarm device | |
| CN210626326U (en) | Multi-gas concentration detection device and alarm device | |
| KR102056767B1 (en) | Probe Type Optical Measurement Apparatus | |
| CN204439539U (en) | A kind of optical system of flue gas monitoring instrument and pick-up unit | |
| CN107064058B (en) | Shale gas leakage multiple gas online monitoring device and method | |
| CN2508243Y (en) | Long-range differential absorption spectrum gas pollution monitor | |
| CN108872124B (en) | Online carbon monoxide analyzer and heating furnace combustion control system | |
| CN100514042C (en) | Double room type nitrogen oxide chemiluminescence reactor | |
| Kan et al. | Large scale gas leakage monitoring with tunable diode laser absorption spectroscopy | |
| CN105334178A (en) | Harmful gas monitoring system based on detection rectifying circuit | |
| CN115684009A (en) | Small infrared gas sensor and working principle | |
| CN105891139B (en) | CO in steel rolling heating furnace2And CO gas detection device | |
| CN213022850U (en) | Flue gas analyzer | |
| CN215415023U (en) | Novel low-power consumption infrared gas sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |