CN201637726U - A portable gas chromatograph - Google Patents
A portable gas chromatograph Download PDFInfo
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- CN201637726U CN201637726U CN2009202780125U CN200920278012U CN201637726U CN 201637726 U CN201637726 U CN 201637726U CN 2009202780125 U CN2009202780125 U CN 2009202780125U CN 200920278012 U CN200920278012 U CN 200920278012U CN 201637726 U CN201637726 U CN 201637726U
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- 238000005070 sampling Methods 0.000 claims abstract description 33
- 239000007789 gas Substances 0.000 claims description 43
- 239000012159 carrier gas Substances 0.000 claims description 9
- 239000000567 combustion gas Substances 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 238000012360 testing method Methods 0.000 claims description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 238000005485 electric heating Methods 0.000 claims description 3
- 230000004907 flux Effects 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 239000010409 thin film Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000000523 sample Substances 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000002421 anti-septic effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000006101 laboratory sample Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
本实用新型涉及一种手提式气相色谱仪，包括气源发生系统，流量控制系统，进样系统，色谱柱箱，检测器，控制电路，软件系统操作控制系统以及其它辅助部件。色谱仪的各系统均采用小型化技术，按一定结构有序布置在一个小型抗压、防水的手提式仪器箱中，使整台仪器便携和美观。配置操作控制系统使仪器不需要外接电脑，更加智能化。仪器箱中配有便携电池，仪器能够实现无电源现场的检测，更加方便。
The utility model relates to a portable gas chromatograph, which comprises a gas source generating system, a flow control system, a sampling system, a chromatographic column box, a detector, a control circuit, a software system operation control system and other auxiliary components. Each system of the chromatograph adopts miniaturization technology, and is arranged in a small pressure-resistant and waterproof portable instrument case in an orderly manner according to a certain structure, making the whole instrument portable and beautiful. Equipped with an operation control system, the instrument does not need an external computer and is more intelligent. The instrument box is equipped with a portable battery, and the instrument can realize on-site detection without power supply, which is more convenient.
Description
Technical field
The utility model belongs to the gas chromatographic analysis field, relates to a kind of miniaturization, and the portable gas chromatograph of intellectuality and portability is mainly used in on-the-spot the detection.
Background technology
Gas chromatograph is a kind of very effectively analytical instrument in modern industry production, environmental protection observing and controlling and scientific research, has selectivity height, highly sensitive, advantage such as accuracy is high, amount of samples is few.But all there is significant disadvantages in the conventional gas-phase chromatograph, be exactly that the analytical instrument system is all very complicated, volume is also bigger, be not easy to carry, analytical cycle is long, is difficult to be applied to scene (perhaps original position) and detects, after sampling mostly at present, send the laboratory back to and analyze, detect the data that the just point sampling that obtains send laboratory sample, rather than the real-time dynamic data of on-the-spot continuous detecting.Therefore need on-the-spot available, easy and simple to handle fast, the portable gas chromatograph used of qualitative identification and detection by quantitative.
Current portable formula gas chromatograph mainly adopts gas cylinder or gas generator to make source of the gas, with six-way valve or the direct sample injection mouth of syringe sample introduction, chromatographic column mostly adopts capillary column, and capillary column is taked direct type of heating: as electric hot plate heating, coaxial sleeve heating and heat conductive silica gel heating etc.Detector applies is more is still miniature thermal conductivity cell detector TCD, miniature optical ionization detecting device PID.Data handling system mainly adopts the Computer Processing of external installation corresponding software.
The shortcoming of existing portable gas chromatograph is: 1, the source of the gas volume of Shi Yonging is big, and weight is big, fails to realize real portability; 2, sampling system is single, can not handle gas sample and liquid sample on an instrument; 3, the detector sensitivity of Shi Yonging is low, has limited chromatographic usable range; 4, instrument all needs external power supply, and data handling system is external computing machine, on-the-spotly detects powerlessly for power free, can not realize intellectuality; 5, the integral body of instrument is attractive in appearance inadequately, and it is convenient inadequately to carry; 6, instrument can not bear extraneous rugged surroundings, as: compressive resistance, waterproof, dustproof, antiseptic property, electrostatic prevention etc.
The utility model content
The technical problems to be solved in the utility model provides a kind of on-the-spot portable gas chromatograph that detects that can be used for, this chromatograph can be realized the miniaturization of source of the gas, chromatographic portability, the sensitivity of detecting device and on-the-spot power supply and the chromatographic intellectuality that detects.
In order to solve the problems of the technologies described above, the utility model provides a kind of portable gas chromatograph, it is characterized in that, comprising:
Air supply system:, provide carrier gas and combustion gas as gas generating unit;
Flow control system: link to each other with air supply system by wireway, be used for controlling the flow of carrier gas, combustion gas, combustion-supporting gas;
Sampling system: link to each other with flow control system by wireway, comprise six-way valve, direct injected mouth, quantity tube, sampling pump and two-position three-way valve, synergy is introduced testing sample;
Chromatograph box: link to each other with sampling system by wireway, a piece-rate system is installed in the casing, be used for testing sample is separated;
Detecting device: link to each other with chromatograph box by wireway, be used for testing sample is detected;
Control circuit: link to each other with sampling system, chromatograph box and detecting device respectively, be used to control the demonstration of carrier gas flux, the temperature of chromatograph box and the temperature of detecting device;
Power supply: form by power supply adaptor and battery, be used to described chromatograph power supply;
Software systems: link to each other with detecting device, comprise signal amplifier and software module, be used to handle the data of described detector acquisition;
Operation control system: link to each other with software systems, be touch LCD screen, in order to Control Software System and described chromatographic input/output information.
Wherein, described flow control system is the needle valve structure.
Wherein, the two-position three-way valve in the described sampling system is used for the switch sampling mode.
Wherein, the input mode of the six-way valve in the described sampling system is hand sampling or auto injection.
Wherein, described piece-rate system comprises capillary chromatographic column and electric-heating thin film.
Wherein, described detecting device is a flame ionization ditector.
Wherein, described power supply adaptor converts external power supply to instrument and is suitable for voltage, and described battery adopts the lithium battery of high power capacity.
The advantage of the portable gas chromatograph of the utility model is: (1) is combined in six-way valve and direct injected on the portable chromatograph by the switching of two-position three-way valve, has realized that an instrument can gas and liquid sample introduction.(2) flame ionization ditector of Shi Yonging (FID) makes on-the-spot detection reach the level that the laboratory is detected.(3) miniaturization of each parts is incorporated in the portable instrument container, and compact conformation is easy to carry, can bear extraneous rugged surroundings (as: compressive resistance, waterproof are prevented dust antiseptic property etc.).(4) instrument adopts touch LCD screen, realizes that instrument, circuit control system, operation control system are integrated.Self is equipped with battery, the detection difficult problem when having solved on-the-spot non-transformer.
Description of drawings
Fig. 1 is the fundamental diagram of the portable gas chromatograph of the utility model;
Fig. 2 is the structural drawing of the portable gas chromatograph sampling system of the utility model;
Fig. 3 is the structural drawing of the portable gas chromatograph of the utility model;
Fig. 4 is the outside drawing of the portable gas chromatograph of the utility model.
Among the figure: 3-1: six-way valve; 3-2: direct injected mouth; 3-3: quantity tube (or collecting trap); 3-4: sampling pump; 3-5: two-position three-way valve; 1: air supply system; 2: flow control system; 3: sampling system; 4: chromatograph box; 5: detecting device; 6: control circuit; 7: power supply (power supply adaptor or battery); 8: software systems; 9: operation control system; 10: dividing plate; 11: thermal baffle; 12: thermal window; 13: little electric fan; 14: sealing gasket; 15: vent port; 16: Handle of suitcase; 17: chest folding switch; 18: micropump; 19: suspender clip.
Embodiment
Be described further with regard to portable gas chromatograph described in the utility model below in conjunction with the drawings and specific embodiments.
Air supply system 1: be a small-sized hydrogen generator, power by power source special.The oxygen emptying that brine electrolysis produces, the hydrogen of generation is as the combustion gas of carrier gas and fid detector 5.
Flow control system 2: be several needle valves, be used for controlling the flow of carrier gas, combustion gas, combustion-supporting gas respectively.
Sampling system 3: comprise six-way valve 3-1, direct injected mouth 3-2, quantity tube (perhaps collecting trap) 3-3, sampling pump 3-4 and two-position three-way valve 3-5.The control circuit that sampling system 3 is connected with microcomputer device links to each other, and sampling system 3 is connected by wireway respectively with chromatograph box 4 with flow control system 2.Sampling system 3 carries out two kinds of switchings between input mode by two-position three-way valve 3-5, and six-way valve 3-1 can hand sampling or auto injection.
Chromatograph box 4: a piece-rate system is installed in the casing, comprise a dish internal diameter be the stainless steel column of 15 meters of length of 0.25mm as capillary chromatographic column and electric-heating thin film, have the heating temperature controlling function.The chromatographic column inspection is surveyed needs to install.
Detecting device 5: comprise a detecting device and heating temperature control circuit.The detecting device that the utility model adopts is flame ionization ditector (FID), by amplifier signal is amplified after the different material ionization, demonstrates net result by microcomputer device.Provide combustion gas by air supply system 1, micropump 18 provides combustion-supporting gas.
Control circuit 6: the control circuit of each device.Comprise: the demonstration control of carrier gas flux, the temperature control of chromatograph box 4, the temperature control of detecting device 5 etc.
Power supply 7: form by power supply adaptor and battery.Power supply adaptor is the voltage that the power source conversion with external 220V becomes instrument to be suitable for.Battery is the lithium battery that adopts high power capacity, and can be used for non-transformer on-the-spot is that instrument is powered.
Software systems 8: comprise signal amplifier and software module, be integrated micro device.
Operation control system 9: be touch LCD screen, in order to control, and the input/output information of entire equipment,, obtain final analysis result and to the processing of data collection of illustrative plates as handling the FID output data to software.
Separate by dividing plate 10 successively between each composition system of above-mentioned portable gas chromatograph, wherein, air supply system 1 separates by thermal baffle 11 and chromatograph box 4 and detecting device 5, flow control system 2 separates by thermal baffle 11 and sampling system 3, detecting device 5 separates by thermal baffle 11 and control circuit 6, to avoid the heat transmission between each adjacent system.The sidewall of sampling system 3 is provided with a thermal window, and door close is installed outward, can close thermal window when need not to dispel the heat.Little electric fan 13 is housed on the baffle plate between detecting device 5 and the control circuit 6, is used for detecting device 5 and control circuit 6 are dispelled the heat.Have a vent port 15 on the sidewall of detecting device 5, communicate, be used for detecting device 5 is dispelled the heat with the external world.
More than the utility model is used for the on-the-spot portable gas chromatograph equipment that detects each system describe respectively, next come that by a specific embodiment the utility model is used for the on-the-spot detailed process that detects and be described.
1, understand field condition to be detected, whether power supply is arranged, the abominable degree of environment is determined the apparatus preparation that need carry.
2, open portable chromatograph, comprise: connect power supply, open the instrument preheating, by regulating the input mode that two-position three-way valve 3-5 determines six-way valve 3-1, adjustments of gas flow control system 2, opening operation control system 9, set analytical parameters by liquid crystal touch screen, comprise: injector temperature, column temperature and detector temperature, analysis time etc.
3, treat instrument stabilizer after, open sampling pump 3-4, extract the gas on-site of certain volume, 3-3 is quantitative by the six-way valve quantity tube, gas enters chromatograph box 4 through wireway, after capillary column separates, enter fid detector 5, collect, after signal amplifier amplifies, on spectrogram, show by ion collector.
4, as needs on-the site analysis liquid sample, can sampling system 3 be switched to direct injected mouth 3-2 by two-position three-way valve 3-5, adopt the direct sample injection of syringe during sample introduction.Analytical procedure is similar with six-way valve 3-1 sample introduction.
5, after analysis finishes, close fid detector 5, close microsystem, reduce the temperature of injection port 3-2, chromatograph box 4 and detecting device 5.Close the control valve of flow control system 2, close the switch of instrument power source 7.
By foregoing description as seen, the portable gas chromatograph of the utility model has the source of the gas generation systems, two kinds of injection ports, a chromatograph box, a fid detector, control circuit, operation control system and other accessory.Each system of instrument is all adopted miniaturization technology, by in certain structurally ordered portable appliance case that is arranged in a resistance to compression that is of a size of 500mm * 400mm * 200mm (length * wide * height), waterproof, make whole instrument portable and attractive in appearance then.The configuration operation control system makes instrument not need external computer, and is intelligent more.Be furnished with portable cell in the instrument container, instrument can be realized the detection at non-transformer scene, and is convenient.
In being provided with of instrument container, the snap portions between case lid and the casing uses sealing gasket 14 to separate, and makes better tightness.Wall box is provided with folding switch 17, Handle of suitcase 16, and suspender clip device 19, make things convenient for chest switch and carry.
The layout of each parts in suitcase of the portable gas chromatograph of the utility model can change on demand, and detecting device also can be used the other types of suitable size as required instead.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvement and replacement, these improvement and replacement also should be considered as protection domain of the present utility model.
Claims (7)
1. a portable gas chromatograph is characterized in that, comprising:
Air supply system (1):, provide carrier gas and combustion gas as gas generating unit;
Flow control system (2): link to each other with air supply system (1) by wireway, be used for controlling the flow of carrier gas, combustion gas, combustion-supporting gas;
Sampling system (3): link to each other with flow control system (2) by wireway, comprise six-way valve (3-1), direct injected mouth (3-2), quantity tube (3-3), sampling pump (3-4) and two-position three-way valve (3-5), synergy is introduced testing sample;
Chromatograph box (4): link to each other with sampling system (3) by wireway, a piece-rate system is installed in the casing, be used for testing sample is separated;
Detecting device (5): link to each other with chromatograph box (4) by wireway, be used for testing sample is detected;
Control circuit (6): link to each other with sampling system (3), chromatograph box (4) and detecting device (5) respectively, be used to control the demonstration of carrier gas flux, the temperature of chromatograph box (4) and the temperature of detecting device (5);
Power supply (7): form by power supply adaptor and battery, be used to described chromatograph power supply;
Software systems (8): link to each other with detecting device (5), comprise signal amplifier and software module, be used to handle the data that described detecting device (5) obtains;
Operation control system (9): link to each other with software systems (8), be touch LCD screen, in order to Control Software System (8) and described chromatographic input/output information.
2. portable gas chromatograph as claimed in claim 1 is characterized in that, described flow control system (2) is the needle valve structure.
3. portable gas chromatograph as claimed in claim 1 is characterized in that, the two-position three-way valve (3-5) in the described sampling system (3) is used for the switch sampling mode.
4. portable gas chromatograph as claimed in claim 1 is characterized in that, the input mode of the six-way valve (3-1) in the described sampling system (3) is hand sampling or auto injection.
5. portable gas chromatograph as claimed in claim 1 is characterized in that described piece-rate system comprises capillary chromatographic column and electric-heating thin film.
6. portable gas chromatograph as claimed in claim 1 is characterized in that, described detecting device (5) is a flame ionization ditector.
7. portable gas chromatograph as claimed in claim 1 is characterized in that, described power supply adaptor is used for converting external power supply to instrument and is suitable for voltage, and described battery is the lithium battery of high power capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202780125U CN201637726U (en) | 2009-12-08 | 2009-12-08 | A portable gas chromatograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202780125U CN201637726U (en) | 2009-12-08 | 2009-12-08 | A portable gas chromatograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201637726U true CN201637726U (en) | 2010-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202780125U Expired - Fee Related CN201637726U (en) | 2009-12-08 | 2009-12-08 | A portable gas chromatograph |
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| CN (1) | CN201637726U (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012139340A1 (en) * | 2011-04-11 | 2012-10-18 | 上海烟草集团有限责任公司 | Gas chromatography-inverse gas chromatography coupled analysis device |
| CN104569207A (en) * | 2015-01-14 | 2015-04-29 | 成都彼斯特生物科技有限公司 | Networked gas chromatograph |
| CN106596902A (en) * | 2017-01-20 | 2017-04-26 | 上海出入境检验检疫局工业品与原材料检测技术中心 | Portable full-automatic apparatus for testing hydrogen sulfide in petroleum products |
| CN107727774A (en) * | 2017-11-28 | 2018-02-23 | 中国科学院电子学研究所 | Multi-sensor chromatography detector and detection method |
| CN109580851A (en) * | 2019-01-29 | 2019-04-05 | 河南中分仪器股份有限公司 | A kind of portable gas chromatograph gas source case |
| CN110514773A (en) * | 2019-08-23 | 2019-11-29 | 浙江杭康检测技术有限公司 | Gas chromatographic detection integrating device |
| CN110927290A (en) * | 2019-12-19 | 2020-03-27 | 常州磐诺仪器有限公司 | Valve sample introduction three-dimensional laboratory gas chromatograph |
| CN111707757A (en) * | 2020-06-29 | 2020-09-25 | 杭州柯林电气股份有限公司 | Transformer oil online chromatographic analysis method based on FID |
| CN112505191A (en) * | 2020-12-17 | 2021-03-16 | 广州禾信仪器股份有限公司 | Portable gas chromatography analysis device and analysis method |
| CN112730640A (en) * | 2020-12-01 | 2021-04-30 | 中国人民解放军军事科学院军事医学研究院 | Portable gas chromatography analysis device and analysis method |
| CN114527216A (en) * | 2022-02-23 | 2022-05-24 | 上海天美科学仪器有限公司 | Portable ultra-fast gas chromatograph |
| CN115684433A (en) * | 2023-01-05 | 2023-02-03 | 江苏惠斯通机电科技有限公司 | Portable modularized portable box type gas chromatograph |
| US20230143377A1 (en) * | 2021-11-09 | 2023-05-11 | Ccteg Shenyang Research Institute | Gas chromatograph for underground mine |
-
2009
- 2009-12-08 CN CN2009202780125U patent/CN201637726U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012139340A1 (en) * | 2011-04-11 | 2012-10-18 | 上海烟草集团有限责任公司 | Gas chromatography-inverse gas chromatography coupled analysis device |
| CN104569207A (en) * | 2015-01-14 | 2015-04-29 | 成都彼斯特生物科技有限公司 | Networked gas chromatograph |
| CN106596902B (en) * | 2017-01-20 | 2023-01-20 | 上海海关工业品与原材料检测技术中心 | Portable full-automatic petroleum product hydrogen sulfide tester |
| CN106596902A (en) * | 2017-01-20 | 2017-04-26 | 上海出入境检验检疫局工业品与原材料检测技术中心 | Portable full-automatic apparatus for testing hydrogen sulfide in petroleum products |
| CN107727774A (en) * | 2017-11-28 | 2018-02-23 | 中国科学院电子学研究所 | Multi-sensor chromatography detector and detection method |
| CN109580851A (en) * | 2019-01-29 | 2019-04-05 | 河南中分仪器股份有限公司 | A kind of portable gas chromatograph gas source case |
| CN110514773A (en) * | 2019-08-23 | 2019-11-29 | 浙江杭康检测技术有限公司 | Gas chromatographic detection integrating device |
| CN110927290A (en) * | 2019-12-19 | 2020-03-27 | 常州磐诺仪器有限公司 | Valve sample introduction three-dimensional laboratory gas chromatograph |
| CN111707757B (en) * | 2020-06-29 | 2023-01-10 | 杭州柯林电气股份有限公司 | Transformer oil online chromatographic analysis method based on FID |
| CN111707757A (en) * | 2020-06-29 | 2020-09-25 | 杭州柯林电气股份有限公司 | Transformer oil online chromatographic analysis method based on FID |
| CN112730640A (en) * | 2020-12-01 | 2021-04-30 | 中国人民解放军军事科学院军事医学研究院 | Portable gas chromatography analysis device and analysis method |
| CN112505191A (en) * | 2020-12-17 | 2021-03-16 | 广州禾信仪器股份有限公司 | Portable gas chromatography analysis device and analysis method |
| US20230143377A1 (en) * | 2021-11-09 | 2023-05-11 | Ccteg Shenyang Research Institute | Gas chromatograph for underground mine |
| CN114527216A (en) * | 2022-02-23 | 2022-05-24 | 上海天美科学仪器有限公司 | Portable ultra-fast gas chromatograph |
| CN115684433A (en) * | 2023-01-05 | 2023-02-03 | 江苏惠斯通机电科技有限公司 | Portable modularized portable box type gas chromatograph |
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Granted publication date: 20101117 Termination date: 20131208 |