CN110346292B - Light path adjustable gas detection device - Google Patents
Light path adjustable gas detection device Download PDFInfo
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- CN110346292B CN110346292B CN201910007736.4A CN201910007736A CN110346292B CN 110346292 B CN110346292 B CN 110346292B CN 201910007736 A CN201910007736 A CN 201910007736A CN 110346292 B CN110346292 B CN 110346292B
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- 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
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- 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
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- 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
- G01N2021/0106—General arrangement of respective parts
- G01N2021/0112—Apparatus in one mechanical, optical or electronic block
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Abstract
The invention discloses a light path adjustable gas detection device, which comprises a light pipe, wherein a lens group module is movably inserted on gas chamber ports at two ends of the light pipe in a split mode, two gas path connecting pipes communicated with the gas chamber are arranged on the side wall of the light pipe, and the lens group module comprises a lens group joint, a high-reflection lens, an observation window lens and a compression ring. The invention has the advantages that the lens group module is in threaded connection with the air chamber openings at the two ends of the light pipe, when the high-reflection lens is required to be rotated to change the light path, the lens of the observation window is not required to be disassembled, the lens group module is directly rotated, the operation is simple, and the adjustment efficiency is high; the light pipe is connected with the adjusting seat plate through the tension spring and the fine adjusting screw, the position of the light path is limited in the vertical direction and the horizontal direction, the position of the light path is not required to be adjusted in the vertical direction and the horizontal direction when the direction of the light path is adjusted, the adjusting step is reduced, the requirements on the professional technical level of operators are low, and the training input cost of the operators is low.
Description
Technical field:
the invention relates to the technical field of gas analysis, in particular to a gas detection device with an adjustable light path.
The background technology is as follows:
when measuring the component amount of trace gas by using the cavity ring-down principle, as shown in fig. 1, the most common measuring device is that a light pipe 1 and an adjusting seat plate 15 are respectively and independently fixed on a bracket, gas enters the light pipe 1 through a gas path connecting pipe 3, laser reciprocates between high reflection lenses 5 at two ends of the light pipe 1, and the cavity ring-down spectrum is measured through a detector 20. The high-reflection lens 5 is movably spliced in the high-reflection lens cavities 4.5 at the two ends of the light pipe 1 in a split mode, the compression ring 7 is screwed in the cavity mouth of the high-reflection lens cavity 4.5, the compression ring 7 limits the high-reflection lens 5 in the high-reflection lens cavity 4.5, the two ends of the light pipe 1 are connected with the pressing cover 21 through bolts, the observation window lens 6 is fixed on the pressing cover 21, the sealing gasket 22 is arranged between the end part of the light pipe 1 and the pressing cover 21, the sealing cutting edges are respectively arranged at the end part of the light pipe 1 and the end part of the pressing cover 21, and the sealing cutting edges are pressed on the sealing gasket 22.
The existing measuring device has the following problems in the use process: 1. when the optical path is changed by rotating the high-reflection lens 5, the gland 21, the sealing gasket 22 and the pressure ring 7 are required to be removed, the pressure ring 7, the sealing gasket 22 and the gland 21 are installed after the position adjustment of the high-reflection lens 5 is completed, and once the optical path is found to be not adjusted to the optimal position, the gland 21, the sealing gasket 22 and the pressure ring 7 are required to be removed again to adjust the high-reflection lens 5, so that the adjustment process is complicated and the adjustment efficiency is low; 2. the light pipe 1 and the adjusting seat plate 15 are respectively and independently fixed on the bracket, when the light path is adjusted, not only the position of the high-reflection lens 5 is required to be adjusted to change the corner of the light path, but also the position of the light path is adjusted in the vertical and horizontal directions through the adjusting seat plate 15, the adjusting process is complicated, the requirements on the technical level of operators are relatively high, and the training input cost of the operators is high; 3. the observation window lens 6 and the gland 21 are welded into a whole, the cost is about 800 yuan, the cost is higher, and if the observation window lens 6 is damaged, the gland 21 needs to be replaced integrally, and the maintenance cost is high; 4. the end of the light pipe 1 and the end of the gland 21 are both provided with sealing blades, the sealing blades are pressed on the sealing gasket 22, the sealing gasket 22 can be damaged by the sealing blades, when the gland 21 is reinstalled after the high-reflection lens 5 is adjusted, the sealing gasket 22 needs to be replaced with a new sealing gasket 22 to ensure the tightness of the air chamber, the sealing gasket 22 cannot be reused, and the input cost is high.
The invention comprises the following steps:
the invention aims to provide a measuring chamber with adjustable light path, which has high adjustment efficiency and low personnel investment cost and equipment cost.
The invention is implemented by the following technical scheme: an optical path adjustable gas detection device comprises a light pipe, a lens module is movably inserted on the air chamber ports at the two ends of the light pipe in a split manner, two gas path connecting pipes communicated with the air chamber are arranged on the side wall of the light pipe,
The lens group module comprises a lens group joint, a high reflection lens, an observation window lens and a compression ring,
One end of the lens group connector is inserted into the air chamber in a sliding way, and an O-shaped ring of the lens group connector is arranged on the outer wall of the lens group connector which is arranged in the air chamber in a sliding way;
a screw-connection shaft shoulder is arranged on the outer wall of the middle part of the lens group connector, an air chamber port inner hole step corresponding to the screw-connection shaft shoulder is arranged on the air chamber port, corresponding threads are arranged on the outer wall of the screw-connection shaft shoulder and the inner wall of the air chamber port inner hole step, and the lens group connector is in screw-connection with the inside of the air chamber through the screw-connection shaft shoulder;
An adjusting shaft shoulder is arranged on the outer wall of the other end of the lens group connector, adjusting blind holes are uniformly distributed on the side wall of the adjusting shaft shoulder along the circumference, and a shaft shoulder elastic gasket is arranged between the adjusting shaft shoulder and the end face of the adjacent light pipe;
The lens assembly comprises a lens assembly joint, a lens assembly joint and a lens assembly joint, wherein a high-reflection lens cavity, a light path cavity and an observation window lens cavity are sequentially arranged in the lens assembly joint from one end of the lens assembly joint to the other end of the lens assembly joint along the axial direction of the lens assembly joint, and an orifice of the high-reflection lens cavity and an orifice of the observation window lens cavity are respectively arranged on two end surfaces of the lens assembly joint; a high-reflection lens is arranged in the high-reflection lens cavity, and a high-reflection O-shaped ring is arranged between the inner wall of the high-reflection lens cavity and the side wall of the high-reflection lens; a high-rebound gasket is arranged between the inner wall of the high-reflection lens cavity and the adjacent mirror surface on one side of the high-reflection lens, and a rolling gasket is arranged between the mirror surface on the other side of the high-reflection lens and the inner wall of the adjacent air chamber; the observation window lens is arranged in the observation window lens cavity, and an observation O-shaped ring is arranged between the inner wall of the observation window lens cavity and one side mirror surface of the adjacent observation window lens; the cavity mouth of the observation window lens cavity is internally and spirally connected with the pressing ring, the pressing ring is axially provided with a light path through hole, and a dustproof O-shaped ring is arranged between the pressing ring and the other side mirror surface of the adjacent observation window lens;
One end of the light pipe is connected with the adjusting seat plate.
Further, three extension springs are arranged between the end face of one end of the light pipe and the end face of the adjusting seat plate adjacent to the end face in a circumferential equidistant manner; three fine adjustment screws are in circumferential equidistant threaded connection on the adjusting seat plate, limiting blind holes corresponding to the tops of the fine adjustment screws are formed in the end face of the light pipe, and the tops of the fine adjustment screws are movably spliced in the corresponding limiting blind holes in a split mode.
Further, a gasket is arranged in the limiting blind hole, and the top end of the fine adjustment screw is abutted to the gasket.
The invention has the advantages that: 1. the lens group module is in threaded connection with air chamber openings at two ends of the light pipe, when the high-reflection lens is required to be rotated to change the light path, the lens of the observation window is not required to be disassembled, and the lens group module is directly rotated, so that the operation is simple, and the adjustment efficiency is high; 2. the light pipe is connected with the adjusting seat plate through the tension spring and the fine adjusting screw, the position of the light path is limited in the vertical direction and the horizontal direction, when the direction of the light path is adjusted, the position of the light path is not required to be adjusted in the vertical direction and the horizontal direction through the adjusting seat plate, the adjusting step is reduced, the adjusting efficiency is improved, the requirements on the professional technical level of operators are lower, and the training input cost of the operators is low; 3. the observation window lens is fixed in the observation window lens cavity through the compression ring, and when the observation window lens is damaged, the observation window lens is directly replaced, the cost is about 100 yuan, and the overhaul cost is low; 4. the two ends of the light pipe are connected with the O-shaped ring through the mirror group, the observation O-shaped ring and the dustproof O-shaped ring for sealing, so that the gas is prevented from leaking from the gas chamber or dust enters the gas chamber to influence the measurement accuracy, the O-shaped ring is not easy to damage in the use process, the service life is long, and the input cost is low.
Description of the drawings:
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a prior art measuring device;
FIG. 2 is a schematic diagram of the structure of the present invention;
FIG. 3 is a cross-sectional view of the present invention;
FIG. 4 is an enlarged partial view of portion A of FIG. 2;
FIG. 5 is an enlarged view of part B of FIG. 3;
Fig. 6 is a schematic structural diagram of a lens assembly joint.
The optical tube comprises a light tube 1, a lens group module 2, an air chamber 1.1, an air passage connecting tube 3, a lens group connecting tube 4, a high-reflection lens 5, an observation window lens 6, a compression ring 7, a lens group connecting O-shaped ring 8, a screw joint shaft shoulder 4.1, an adjustment shaft shoulder 4.2, an adjustment blind hole 9, an observation window lens cavity 4.3, an optical path cavity 4.4, a high-reflection lens cavity 4.5, a high-reflection O-shaped ring 10, a high-rebound gasket 11, a rolling gasket 12, an observation O-shaped ring 13, an optical path through hole 7.1, a dustproof O-shaped ring 14, an adjustment seat plate 15, a tension spring 16, a fine adjustment screw 17, a limit blind hole 18, a gasket 19, a detector 20, a gland 21, a sealing gasket 22 and a shaft shoulder elastic gasket 23.
The specific embodiment is as follows:
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 2-6, a gas detection device with an adjustable light path comprises a light pipe 1, wherein a lens module 2 is movably inserted and connected on gas chamber openings at two ends of the light pipe 1 in a split mode, and two gas path connecting pipes 3 communicated with a gas chamber 1.1 are arranged on the side wall of the light pipe 1 and used for introducing gas to be measured into the gas chamber 1.1.
The lens group module 2 comprises a lens group connecting device 4, a high reflection lens 5, a viewing window lens 6 and a compression ring 7.
One end of the lens group joint 4 is inserted in the air chamber 1.1 in a sliding way, an O-shaped ring 8 of the lens group joint is arranged on the outer wall of the lens group joint 4 which is arranged in the air chamber 1.1 in a sliding way, the O-shaped ring 8 of the lens group joint is clamped between the inner wall of the air chamber 1.1 and the outer wall of the lens group joint 4, and the gas in the air chamber 1.1 is prevented from leaking out through a gap between the inner wall of the air chamber 1.1 and the outer wall of the lens group joint 4.
The middle outer wall of the mirror group joint 4 is provided with a screw joint shaft shoulder 4.1, the air chamber port is provided with an air chamber port inner hole step corresponding to the screw joint shaft shoulder 4.1, the inner walls of the screw joint shaft shoulder 4.1 and the air chamber port inner hole step are provided with corresponding threads, and the mirror group joint 4 is screwed in the air chamber 1.1 through the threads on the outer wall of the screw joint shaft shoulder 4.1; when the optical path is changed by rotating the high-reflection lens 5, the lens 6 of the observation window is not required to be disassembled, the lens group module 2 is directly rotated, the operation is simple, and the adjustment efficiency is high.
An adjusting shaft shoulder 4.2 is arranged on the outer wall of the other end of the lens group joint 4, adjusting blind holes 9 are uniformly distributed on the side wall of the adjusting shaft shoulder 4.2 along the circumference, when the lens group joint 4 needs to be rotated, an adjusting rod is inserted into the adjusting blind holes 9, and the lens group joint 4 can be rotated by moving the adjusting rod; the shoulder elastic gasket 23 is arranged between the adjusting shoulder 4.2 and the end face of the adjacent light pipe 1, and the shoulder elastic gasket 23 applies a force far away from the end face of the light pipe 1 to the adjusting shoulder 4.2, so that a pretightening force is provided for the threaded connection between the threaded connection shoulder 4.1 and the air chamber 1.1, and the threaded connection between the threaded connection shoulder 4.1 and the air chamber 1.1 is prevented from loosening.
The high-reflection lens cavity 4.5, the light path cavity 4.4 and the observation window lens cavity 4.3 which are communicated are sequentially arranged in the mirror group joint 4 along the axial direction of the mirror group joint 4 from one end of the mirror group joint 4 to the other end, and the cavity opening of the high-reflection lens cavity 4.5 and the cavity opening of the observation window lens cavity 4.3 are respectively arranged on two end surfaces of the mirror group joint 4; the high reflection mirror plate 5 is arranged in the high reflection mirror plate cavity 4.5, a high reflection O-shaped ring 10 is arranged between the inner wall of the high reflection mirror plate cavity 4.5 and the side wall of the high reflection mirror plate 5, and the high reflection mirror plate 5 is fixed in the high reflection mirror plate cavity 4.5 by the high reflection O-shaped ring 10 to prevent the high reflection mirror plate 5 from falling off from the high reflection mirror plate cavity 4.5; a high-rebound gasket 11 is arranged between the inner wall of the high-reflection lens cavity 4.5 and one side mirror surface of the adjacent high-reflection lens 5, the high-rebound gasket 11 extrudes the high-reflection lens 5, when the lens group joint 4 is rotated, the distance between the high-reflection lenses 5 at the two ends of the light pipe 1 is kept constant, a rolling gasket 12 is arranged between the other side mirror surface of the high-reflection lens 5 and the inner wall of the adjacent air chamber 1.1, the other side mirror surface of the high-reflection lens 5 is prevented from being directly contacted with the inner wall of the adjacent air chamber 1.1, when the lens group joint 4 is rotated, the other side mirror surface of the high-reflection lens 5 is scratched, and the other side mirror surface of the high-reflection lens 5 is tightly attached to the rolling balls of the rolling gasket 12, and due to the small gap between the sizes of the rolling balls of the rolling gasket 12, when the lens group joint 4 is rotated, the position of the high-reflection lens 5 is offset, so that the direction of a light path is changed; an observation window lens 6 is arranged in the observation window lens cavity 4.3, an observation O-shaped ring 13 is arranged between the inner wall of the observation window lens cavity 4.3 and one side mirror surface of the adjacent observation window lens 6, and the observation O-shaped ring 13 prevents gas in the gas chamber 1.1 from leaking out through a gap between the inner wall of the gas chamber 1.1 and the outer wall of the observation window lens 6; the compression ring 7 is screwed in the cavity opening of the observation window lens cavity 4.3, the observation window lens 6 is limited in the observation window lens cavity 4.3 by the compression ring 7, the observation window lens 6 is prevented from falling off from the observation window lens cavity 4.3, when the observation window lens 6 is damaged, the observation window lens 6 is directly replaced, the cost is about 100 yuan, and the overhaul cost is low; the clamping ring 7 is axially provided with a light path through hole 7.1, so that a light path can be smoothly injected into the air chamber 1.1 through the clamping ring 7, a dustproof O-shaped ring 14 is arranged between the clamping ring 7 and the other side mirror surface of the adjacent observation window lens 6, and dust is prevented from entering the air chamber 1.1 through a gap between the inner wall of the air chamber 1.1 and the outer wall of the observation window lens 6. The two ends of the light pipe 1 are sealed by the mirror group joint O-shaped ring 8, the observation O-shaped ring 13 and the dustproof O-shaped ring 14, so that gas leakage from the gas chamber 1.1 or dust entering the gas chamber 1.1 is prevented from affecting the measurement accuracy, the O-shaped ring is not easy to damage in the use process, the service life is long, and the input cost is low.
Three extension springs 16 are arranged between the end face of one end of the light pipe 1 and the end face of the adjacent adjusting seat plate 15 along the circumferential direction at equal intervals, one end of each extension spring 16 is fixedly connected with the end face of the light pipe 1, and the other end of each extension spring 16 is fixedly connected with the end face of the adjusting seat plate 15; three fine adjustment screws 17 are in circumferential equidistant spiro union on the adjusting seat plate 15, limit blind holes 18 corresponding to the top ends of the fine adjustment screws 17 are arranged on the end face of the light pipe 1, gaskets 19 are arranged in the limit blind holes 18, the top ends of each fine adjustment screw 17 are movably spliced in the corresponding limit blind holes 18 and are abutted to the gaskets 19, the top ends of the fine adjustment screws 17 are movably spliced in the corresponding limit blind holes 18 to prevent the adjusting seat plate 15 from displacing along the plane where the end face of the light pipe 1 is located, and the top ends of the fine adjustment screws 17 are abutted to the gaskets 19 to avoid overlarge stress deformation of the inner wall of the limit blind holes 18. The light pipe 1 is connected with the adjusting seat plate 15 through the tension spring 16 and the fine adjusting screw 17, the position of the light path is limited in the vertical and horizontal directions, when the direction of the light path is adjusted, the position of the light path is not required to be adjusted in the vertical and horizontal directions through the adjusting seat plate 15, the adjusting step is reduced, the adjusting efficiency is improved, the requirements on the professional technical level of operators are lower, and the training input cost of the operators is low.
Description of use:
when the light pipe 1 is placed on a support fixed with the detector 20 and the direction of a light path is adjusted, firstly, three fine adjustment screws 17 are rotated to adjust the angle of the light path, after the light path is determined, the rotation angle of the high-reflection mirror needs to be adjusted when the light path is in order to obtain a more stable light path with higher signal quality, at the moment, an adjustment rod is inserted into an adjustment blind hole 9 on the mirror group connecting device 4, the mirror group module 2 is rotated, when the voltage value returned by the detector 20 is larger and stable, the acquisition of an optimal signal is proved, and the rotation of the mirror group module 2 is stopped. After the light path is adjusted, the gas path pipeline is communicated with the gas path connecting pipe 3, the light path reciprocates between the high-reflection lenses 5 at the two ends of the gas chamber 1.1, and as the reflectivity of the high-reflection lenses 5 cannot reach 100%, part of light escapes from the high-reflection lenses 5 at the end of the detector 20 after each reflection, so that the detector 20 measures the ring-down spectrum of the optical cavity to analyze the gas components in the gas chamber 1.1.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (3)
1. The light path adjustable gas detection device comprises a light pipe, a lens group module is movably inserted on the air chamber ports at two ends of the light pipe in a split manner, two gas path connecting pipes communicated with the air chamber are arranged on the side wall of the light pipe, and is characterized in that,
The lens group module comprises a lens group joint, a high reflection lens, an observation window lens and a compression ring,
One end of the lens group connector is inserted into the air chamber in a sliding way, and an O-shaped ring of the lens group connector is arranged on the outer wall of the lens group connector which is arranged in the air chamber in a sliding way;
a screw-connection shaft shoulder is arranged on the outer wall of the middle part of the lens group connector, an air chamber port inner hole step corresponding to the screw-connection shaft shoulder is arranged on the air chamber port, corresponding threads are arranged on the outer wall of the screw-connection shaft shoulder and the inner wall of the air chamber port inner hole step, and the lens group connector is in screw-connection with the inside of the air chamber through the screw-connection shaft shoulder;
An adjusting shaft shoulder is arranged on the outer wall of the other end of the lens group connector, adjusting blind holes are uniformly distributed on the side wall of the adjusting shaft shoulder along the circumference, and a shaft shoulder elastic gasket is arranged between the adjusting shaft shoulder and the end face of the adjacent light pipe;
The lens assembly comprises a lens assembly joint, a lens assembly joint and a lens assembly joint, wherein a high-reflection lens cavity, a light path cavity and an observation window lens cavity are sequentially arranged in the lens assembly joint from one end of the lens assembly joint to the other end of the lens assembly joint along the axial direction of the lens assembly joint, and an orifice of the high-reflection lens cavity and an orifice of the observation window lens cavity are respectively arranged on two end surfaces of the lens assembly joint; a high-reflection lens is arranged in the high-reflection lens cavity, and a high-reflection O-shaped ring is arranged between the inner wall of the high-reflection lens cavity and the side wall of the high-reflection lens; a high-rebound gasket is arranged between the inner wall of the high-reflection lens cavity and the adjacent mirror surface on one side of the high-reflection lens, and a rolling gasket is arranged between the mirror surface on the other side of the high-reflection lens and the inner wall of the adjacent air chamber; the observation window lens is arranged in the observation window lens cavity, and an observation O-shaped ring is arranged between the inner wall of the observation window lens cavity and one side mirror surface of the adjacent observation window lens; the cavity mouth of the observation window lens cavity is internally and spirally connected with the pressing ring, the pressing ring is axially provided with a light path through hole, and a dustproof O-shaped ring is arranged between the pressing ring and the other side mirror surface of the adjacent observation window lens;
One end of the light pipe is connected with the adjusting seat plate.
2. The light path adjustable gas detection device according to claim 1, wherein three tension springs are circumferentially equidistant between an end face of the light pipe and an end face of the adjusting seat plate adjacent to the end face; three fine adjustment screws are in circumferential equidistant threaded connection on the adjusting seat plate, limiting blind holes corresponding to the tops of the fine adjustment screws are formed in the end face of the light pipe, and the tops of the fine adjustment screws are movably spliced in the corresponding limiting blind holes in a split mode.
3. The light path adjustable gas detection device according to claim 2, wherein a gasket is arranged in the limit blind hole, and the top end of the fine adjustment screw is abutted against the gasket.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910007736.4A CN110346292B (en) | 2019-01-04 | 2019-01-04 | Light path adjustable gas detection device |
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| CN201910007736.4A CN110346292B (en) | 2019-01-04 | 2019-01-04 | Light path adjustable gas detection device |
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| CN110346292A CN110346292A (en) | 2019-10-18 |
| CN110346292B true CN110346292B (en) | 2024-06-25 |
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| CN114441447B (en) * | 2021-12-31 | 2023-11-28 | 呼和浩特科林热电有限责任公司 | Air chamber based on sulfur hexafluoride detects usefulness |
| CN117147091B (en) * | 2023-07-25 | 2024-10-29 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Maintenance platform for dew point measurement of low-temperature wind tunnel test section and use method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN209387501U (en) * | 2019-01-04 | 2019-09-13 | 内蒙古光能科技有限公司 | A kind of adjustable gas-detecting device of optical path |
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| GB1570899A (en) * | 1976-01-08 | 1980-07-09 | Allied Chem | Infrared gas analysis |
| JP2012173022A (en) * | 2011-02-18 | 2012-09-10 | Shimadzu Corp | Gas cell |
| CN205157417U (en) * | 2015-08-19 | 2016-04-13 | 苏州华和呼吸气体分析研究所有限公司 | It measures blood ketoboidies horizontally CRDS acetone scentometer to be used for not having creating |
| CN206832668U (en) * | 2017-06-05 | 2018-01-02 | 湖北锐意自控系统有限公司 | Gasmetry pond and the gas analyzer provided with gasmetry pond |
| CN207423791U (en) * | 2017-11-01 | 2018-05-29 | 内蒙古光能科技有限公司 | A kind of trace gas detection equipment |
| CN108562550B (en) * | 2018-04-04 | 2020-09-29 | 中国计量科学研究院 | Frequency-stabilized optical cavity ring-down spectrometer for absolute measurement of carbon isotope content in atmosphere |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN209387501U (en) * | 2019-01-04 | 2019-09-13 | 内蒙古光能科技有限公司 | A kind of adjustable gas-detecting device of optical path |
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