CN114295681B - Testing arrangement suitable for research of electrochemical gas sensor dust characteristic - Google Patents
Testing arrangement suitable for research of electrochemical gas sensor dust characteristic Download PDFInfo
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- CN114295681B CN114295681B CN202111458287.9A CN202111458287A CN114295681B CN 114295681 B CN114295681 B CN 114295681B CN 202111458287 A CN202111458287 A CN 202111458287A CN 114295681 B CN114295681 B CN 114295681B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention provides a testing device suitable for researching dust characteristics of an electrochemical gas sensor, which belongs to the technical field of performance testing of electrochemical gas sensors and comprises a dust characteristic testing box, a dust spraying device, a gas cylinder and a gas collecting cylinder; the dust characteristic test box comprises a box body, a box cover, a fan and an electric heater, wherein the fan and the electric heater are arranged in the box body, a box cover sealing cover is arranged on the box body, an electrochemical gas sensor to be tested is placed in the box body, and an air inlet hole, an air outlet hole and a dust inlet hole are formed in the box body; the dust spraying device is connected with a dust inlet hole of the box body; the air bottle is connected with an air inlet hole of the box body through an air inlet pipe; the gas collecting bottle is connected with the gas outlet hole of the box body. The testing device can well study the influence of dust particles on the measurement accuracy and the failure degree of the electrochemical gas sensor, and provides a basis for developing the type selection and the service life of the gas sensor of the atmosphere monitoring system in an industrial pollution area of a coal gangue power plant.
Description
Technical Field
The invention relates to the technical field of performance test of electrochemical gas sensors, in particular to a testing device suitable for dust characteristic research of electrochemical gas sensors.
Background
In the research of corrosion prevention technology of power transmission and transformation engineering equipment in high-pollution areas of national power grid companies and the development and application work of an atmosphere monitoring system, a coal gangue power plant exists in the range of a selected atmosphere monitoring area, so that a large amount of dust (fly ash) particles exist in the atmosphere environment. Under the action of gravity, large dust particles can naturally settle on the atmosphere monitoring system shell, and smaller dust particles can suspend in the air, enter the equipment through the sampling port of the atmosphere monitoring system, so that dust particles are accumulated on the surface of the sensor for measuring gas, and the gas to be measured is prevented from entering the sensor, thereby affecting the measurement accuracy and the service life of the atmosphere monitoring system. The traditional method for reducing the dust entering the atmosphere monitoring system is to install a layer of filter screen at the sampling port, so that the entering amount of dust particles is reduced. In the practical use process, the method has three problems. Firstly, the dust particles have poor filtering effect. The atmosphere monitoring system is often installed in the place that outdoor condition is abominable, and the filter screen mainly uses metal material, can only filter the dust particle thing that is greater than the aperture, can't realize only through gaseous and filter all dust particle thing. And secondly, gas throughput. And part of dust particles meet water molecules in the atmosphere, are condensed and adsorbed on the surface of the filter screen, are accumulated on the surface of the filter screen gradually along with time, block filter holes, and reduce the gas throughput. And thirdly, the accuracy of gas measurement is affected, and the service life of the sensor is shortened. Dust particles entering the atmosphere monitoring system through the sampling port can be settled on the surface of the gas monitoring sensor and gradually accumulated, so that the measurement characteristics of the sensor are affected, the sensor is inaccurate in measurement and fails, and the service life is reduced.
Therefore, it is necessary to design a testing device suitable for the dust characteristic study of the electrochemical gas sensor to overcome the above problems.
Disclosure of Invention
In order to avoid the problems, the testing device suitable for the dust characteristic research of the electrochemical gas sensor is provided, the influence of dust particles on the measurement accuracy and the failure degree of the electrochemical gas sensor is researched, and the basis is provided for developing the type selection and the service life of the gas sensor of the atmosphere monitoring system in an industrial pollution area of a coal gangue power plant.
The invention provides a testing device suitable for researching dust characteristics of an electrochemical gas sensor, which comprises: the dust characteristic test box, the dust spraying device, the gas cylinder and the gas collecting cylinder;
the dust characteristic test box comprises a box body, a box cover, a fan and an electric heater, wherein the fan and the electric heater are arranged in the box body, a box cover sealing cover is arranged on the box body, an electrochemical gas sensor to be tested is placed in the box body, and an air inlet hole, an air outlet hole and a dust inlet hole are formed in the box body; the dust spraying device is connected with a dust inlet hole of the box body and is used for spraying dust particles into the box body; the gas cylinder is connected with the gas inlet hole of the box body through the gas inlet pipe and is used for introducing gas to be detected with known concentration into the box body; the gas collecting bottle is connected with the gas outlet hole of the box body and is used for filtering and collecting the waste gas coming out of the box body.
Preferably, the box body and the box cover are made of transparent glass or acrylic plates.
Preferably, the dust spraying device comprises a dust pipe, a switch, a dust storage box and an air supply mechanism, wherein the air supply mechanism is connected with a dust inlet hole of the box body through the dust pipe, the dust storage box is connected with the dust pipe and used for feeding dust particles into the dust pipe, and the dust pipe is provided with the switch.
Preferably, a filter screen is arranged on the dust pipe between the powder storage box and the dust inlet hole of the box body.
Preferably, the powder storage box is connected to the dust pipe through a three-way pipe.
Preferably, the dust pipes on two sides of the powder storage box are provided with switches.
Preferably, the gas collection bottle comprises a bottle body, a bottle plug, a gas collection inlet pipe, a gas collection outlet pipe and an exhaust gas treatment liquid, wherein the bottle plug sealing plug is arranged on the bottle body filled with the exhaust gas treatment liquid, one end of the gas collection inlet pipe is connected with the gas outlet pipe, the other end of the gas collection inlet pipe extends into the bottle body and is positioned below the liquid level of the exhaust gas treatment liquid, and the gas collection outlet pipe extends into the bottle body and is positioned above the liquid level of the exhaust gas treatment liquid and is used for discharging the gas treated in the bottle body.
Preferably, a pressure reducing valve and a flow meter are provided on a cylinder containing a gas of known concentration.
Preferably, the gas cylinder is provided with a valve for controlling the switch.
Preferably, the dust characteristic test box is arranged on the test bench, the dust pipe is arranged on the test bench through the support frame, and the tabletop of the test bench is made of acid and alkali corrosion resistant materials.
Compared with the prior art, the invention has the following beneficial effects: the testing device can well simulate the process that dust enters the atmosphere monitoring system, after entering the testing box body, the dust is uniformly distributed in the whole box body space under the action of the fan, so that the dust is settled on the surface of the electrochemical gas sensor, and then the dust characteristics of the sensor are researched by introducing gas to be tested with known concentration. By spraying dust particles with different mass concentrations, the research on the dust characteristics of the electrochemical gas sensor under different deposition time can be realized, and a basis is provided for developing the gas sensor model selection and the service life of the atmosphere monitoring system in the industrial pollution area of the coal gangue power plant.
Drawings
FIG. 1 is a schematic structural diagram of a testing device suitable for dust property study of an electrochemical gas sensor according to a preferred embodiment of the present invention;
FIG. 2 is a schematic view showing the structure of a dust characteristic test box according to a preferred embodiment of the present invention;
FIG. 3 is a schematic view showing a dust injecting apparatus according to a preferred embodiment of the present invention;
FIG. 4 is a schematic view of a gas collecting bottle according to a preferred embodiment of the present invention;
reference numerals of the specific embodiments illustrate:
1-dust characteristic test box, 1A-box cover, 1B-fan, 1C-dust inlet hole, 1D-box body, 1E-air outlet hole, 1F-electrochemical gas sensor, 1G-power line hole, 1H-air inlet hole, 1I-electric heater,
2-dust spraying device, 2A-dust pipe, 2B-switch, 2C-filter screen, 2D-box cover, 2E-powder storage box, 2F-three-way pipe,
a 3-supporting frame for supporting the frame,
4-a test bench, wherein the test bench is provided with a test chamber,
5-an air outlet pipe,
6-gas collecting bottle, 6A-gas collecting outlet pipe, 6B-gas collecting inlet pipe, 6C-bottle stopper, 6D-bottle body, 6E-waste gas treatment solution,
7-an air inlet pipe, wherein the air inlet pipe is provided with a plurality of air inlets,
8-gas cylinder.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the invention but are not intended to limit the scope of the invention.
As shown in fig. 1 to 4, a test device for dust characteristic study of an electrochemical gas sensor 1F according to the present embodiment includes: the dust characteristic test box 1, the dust spraying device 2, the gas cylinder 8 and the gas collecting cylinder 6. The dust characteristic test box 1 is arranged on the test bench 4, the dust pipe 2A is arranged on the test bench 4 through the support frame 3, and the tabletop of the test bench 4 is made of acid and alkali corrosion resistant materials.
The dust spraying device 2 is connected with the dust characteristic test box 1 and is used for spraying dust particles into the dust characteristic test box 1. The gas cylinder 8 is connected with the dust characteristic test box 1 through the gas inlet pipe 7 and is used for introducing gas to be tested into the dust characteristic test box 1. The gas collection bottle 6 is connected with the dust characteristic test box 1 for filtering and collecting the exhaust gas coming out from the inside of the box body 1D. The air inlet pipe 7 and the air outlet pipe 5 are made of rubber pipes, and one ends of the air inlet pipe 7 and the air outlet pipe 5 are respectively connected with a valve or a hard glass pipe and are used for being connected with the dust characteristic test box 1.
As shown in fig. 1 and 2, the dust characteristic test box 1 includes a box body 1D, a box cover 1A, a fan 1B and an electric heater 1I, the fan 1B and the electric heater 1I are installed in the box body 1D, a box cover 1A is sealed to cover the box body 1D, an electrochemical gas sensor 1F to be tested is placed in the box body 1D, and an air inlet hole 1H, an air outlet hole 1E and a dust inlet hole 1C are formed in the box body 1D.
Wherein, the material of the box body 1D and the box cover 1A is transparent glass or acrylic plate. The bottom of the front of the box body 1D is provided with 3 holes, namely an air outlet hole 1E, a power line hole 1G and an air inlet hole 1H. The air inlet hole 1H is used for connecting with an air bottle 8 and is used for introducing air to be tested into the box body 1D; the power line hole 1G is used for externally connecting a power line of the fan 1B and a power line of the electrochemical gas sensor 1F, and is sealed by using plasticine; the air outlet hole 1E is connected with the gas collecting bottle 6 and is used for collecting and treating waste gas. Meanwhile, a hole is formed in the middle of the front face of the box body 1D and used for installing the electric heater 1I, and the installation hole is sealed by a rubber gasket; the electric heater 1I is used for adjusting the temperature of the dust characteristic test box 1 and simulating the atmospheric environment temperature value. The top of the right side of the box body 1D is provided with a dust inlet hole 1C for connecting a dust spraying device 2.
In this embodiment, a fan 1B is installed on the inner surface of the case cover 1A, for generating air flow to stir dust sprayed into the case 1D so as to be uniformly distributed in the case 1D. If a gap exists at the joint of the box cover 1A and the box body 1D, the gap can be sealed by adopting an adhesive tape, so that dust and gas are prevented from being diffused to influence the concentration value. The electrochemical gas sensor 1F is placed at the bottom in the box body 1D, the fan 1B is turned off after the dust is uniformly mixed, so that the dust naturally settles on the surface of the electrochemical gas sensor 1F, and after a period of deposition, the gas with known concentration is introduced for testing the dust characteristics of the electrochemical gas sensor 1F. Meanwhile, different dust characteristic values can be obtained by changing the concentration and the deposition time of the sprayed dust particles.
The operation process of the dust characteristic test is as follows:
1. connect dust spraying device 2, gas cylinder 8, collecting and aligning cylinder and power line
The dust spraying device 2 is connected with the dust characteristic test box 1 through a dust inlet hole 1C, an air inlet hole 1H is connected with an air bottle 8 through an air inlet pipe 7, an air outlet hole 1E is connected with an air collecting bottle 6 through an air outlet pipe 5, the air inlet pipe 7 and the air outlet pipe 5 are respectively clamped by clamps to achieve a sealing effect, and a power line of the fan 1B and a power line of the electrochemical gas sensor 1F penetrate through a power line hole 1G and are sealed by a rubber mud plug.
2. Power line of spraying dust and parallel ventilating fan 1B
After the dust spraying device 2 sprays dust, a power line of the fan 1B is connected, the fan 1B is turned on to stir the dust in the box body 1D, and after the dust is uniformly distributed in the box, the fan 1B is turned off.
3. Turning on the heater
The electric heater 1I is powered on to make the temperature in the powder box body 1D constant at 30 ℃.
4. Introducing a gas to be tested
After the dust subsides for a specified time, the clamp on the air inlet pipe 7 is taken down, the valve switch 2B of the air bottle 8 is opened, the flow is regulated, the gas to be measured with known concentration is introduced into the box body 1D, after a certain volume of gas is introduced, the valve of the air bottle 8 is closed, and the air inlet pipe 7 is clamped by the clamp.
5. Dust property test and exhaust gas treatment
And switching on the power supply of the electrochemical gas sensor 1F, and reading and recording an indication value after the displayed data are stable.
6. Exhaust gas collection and treatment
Closing the power supply of the electrochemical gas sensor 1F; the replacement gas cylinder 8 is filled with air into the box body 1D, the clamp on the gas outlet pipe 5 is taken down, and waste gas is collected and treated.
As shown in fig. 1 and 3, the dust injecting device 2 is composed of a dust pipe 2A, a switch 2B, a filter screen 2C, a lid 2D, a powder storage box 2E, a three-way pipe 2F, and an air feeding mechanism. The filter screen 2C is mounted at the left end of the dust pipe 2A of the first section, and the left end is connected with the dust inlet hole 1C on the right side of the box 1D. The right end of the dust pipe 2A of the first section is connected with a first switch 2B, the right end of the switch 2B is connected with the dust pipe 2A of the second section provided with a filter screen 2C, the right end of the dust pipe 2A of the second section is connected with a three-way pipe 2F, the upper end of the three-way pipe 2F is connected with a powder storage box 2E, and a box cover 2D is arranged on the powder storage box 2E; the right end of the three-way pipe 2F is connected with the left end of the dust pipe 2A of the third section, the right end of the dust pipe 2A of the third section is connected with the left end of the second switch 2B, the right end of the second switch 2B is connected with the dust pipe 2A of the fourth section, the dust pipe 2A of the fourth section is connected with an air supply mechanism and is used for supplying air into the dust pipe 2A, so that the dust storage box 2E is driven to supply dust particles in dust, and finally the dust particles enter the box body 1D. Wherein, dust pipe 2A material is PVC, and switch 2B uses the ball valve. The filter screen 2C can filter larger dust particles in the dust pipe 2A, and meanwhile, dust can be scattered and thinned, so that the test effect is prevented from being influenced by agglomeration.
During installation test, the joint of the dust pipe 2A and the dust inlet hole 1C, the joint of the dust pipe 2AA and the valve switch 2B, and the joint of the three-way pipe 2F and the dust pipe 2A and the dust storage box 2E are sealed by adopting raw material belts. The box cover 2D and the powder storage box 2E are connected through threads, and the connection part of the box cover 2D and the powder storage box 2E is sealed by adopting a rubber gasket.
Wherein, the operation process of dust spraying is:
1. charging dust
The box cover 2D is opened, dust with known mass concentration is filled into the powder storage box 2E, and the box cover 2D is covered and screwed.
2. The air supply mechanism is connected in, and the switch 2B is opened
The air supply mechanism is connected to the right end of the fourth-stage dust pipe 2A through an air supply pipe, and the first switch 2B and the second ball valve switch 2B are sequentially driven.
3. Spraying dust
The air supply pipe valve switch 2B is slowly opened, and dust put into the powder storage box 2E is sprayed into the box body 1D through air flow.
4. Closing switch 2B
After observing that no dust is sprayed out from the left end of the dust pipe 2A, the air supply pipe valve is sequentially closed, and the first switch 2B and the second switch 2B are sequentially closed.
As shown in fig. 1 and 4, the gas collecting bottle 6 comprises a bottle body 6D, a bottle stopper 6C, a gas collecting inlet pipe 6B, a gas collecting outlet pipe 6A and an exhaust gas treatment liquid, wherein the bottle stopper 6C is sealed on the bottle body 6D filled with the exhaust gas treatment liquid, one end of the gas collecting inlet pipe 6B is connected with the gas outlet pipe 5, the other end of the gas collecting inlet pipe extends into the bottle body 6D and is positioned below the liquid level of the exhaust gas treatment liquid, and the gas collecting outlet pipe 6A extends into the bottle body 6D and is positioned above the liquid level of the exhaust gas treatment liquid and is used for discharging the treated gas in the bottle body 6D. Wherein, the gas cylinder 8 filled with the gas with known concentration is provided with a pressure reducing valve and a flowmeter, and the gas cylinder 8 is provided with a valve for controlling the switch 2B. And the exhaust gas treatment solution 6E is selected from various solutions, typically an acid-base solution, depending on the kind of gas introduced.
The testing device can well simulate the process that dust enters the atmosphere monitoring system, after entering the testing box body 1D, the dust is uniformly distributed in the whole box body 1D space under the action of the fan 1B, so that the dust is settled on the surface of the electrochemical gas sensor 1F, and then the dust characteristics of the sensor are researched by introducing gas to be tested with known concentration. By spraying dust particles with different mass concentrations, the dust characteristics of the electrochemical gas sensor 1F under different deposition times can be studied.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. The testing device suitable for the dust characteristic research of the electrochemical gas sensor is characterized by comprising a dust characteristic testing box, a dust spraying device, a gas cylinder and a gas collecting cylinder;
the dust characteristic test box comprises a box body, a box cover, a fan and an electric heater, wherein the fan and the electric heater are arranged in the box body, a box cover sealing cover is arranged on the box body, an electrochemical gas sensor to be tested is placed in the box body, and an air inlet hole, an air outlet hole and a dust inlet hole are formed in the box body; the dust spraying device is connected with a dust inlet hole of the box body and is used for spraying dust particles into the box body; the gas cylinder is connected with the gas inlet hole of the box body through the gas inlet pipe and is used for introducing gas to be detected with known concentration into the box body; the gas collecting bottle is connected with the gas outlet hole of the box body and is used for filtering and collecting the waste gas coming out of the box body.
2. The test device for dust property study of electrochemical gas sensor as set forth in claim 1, wherein: the box body and the box cover are made of transparent glass or acrylic plates.
3. The test device for dust property study of electrochemical gas sensor as set forth in claim 1, wherein: the dust spraying device comprises a dust pipe, a switch, a dust storage box and an air supply mechanism, wherein the air supply mechanism is connected with a dust inlet hole of the box body through the dust pipe, the dust storage box is connected with the dust pipe and used for feeding dust particles into the dust pipe, and the dust pipe is provided with the switch.
4. A test device for electrochemical gas sensor dust property studies as claimed in claim 3, wherein: a filter screen is arranged on the dust pipe between the powder storage box and the dust inlet hole of the box body.
5. A test device for electrochemical gas sensor dust property studies as claimed in claim 3, wherein: the powder storage box is connected to the dust pipe through a three-way pipe.
6. A test device for electrochemical gas sensor dust property studies as claimed in claim 3, wherein: the dust pipes on two sides of the powder storage box are provided with switches.
7. The test device for dust property study of electrochemical gas sensor as set forth in claim 1, wherein: the gas collecting bottle comprises a bottle body, a bottle plug, a gas collecting inlet pipe, a gas collecting outlet pipe and waste gas treatment liquid, wherein the bottle plug is arranged on the bottle body filled with the waste gas treatment liquid, one end of the gas collecting inlet pipe is connected with the gas outlet pipe, the other end of the gas collecting inlet pipe extends into the bottle body and is positioned below the liquid level of the waste gas treatment liquid, and the gas collecting outlet pipe extends into the bottle body and is positioned above the liquid level of the waste gas treatment liquid and is used for discharging the gas treated in the bottle body.
8. The test device for dust property study of electrochemical gas sensor as set forth in claim 1, wherein: the gas cylinder filled with the gas with known concentration is provided with a pressure reducing valve and a flowmeter.
9. The test device for dust property study of electrochemical gas sensor as set forth in claim 1, wherein: the gas cylinder is provided with a valve for controlling the switch.
10. The test device for dust property study of electrochemical gas sensor as set forth in claim 1, wherein: the dust characteristic test box is arranged on the test bench, the dust pipe is arranged on the test bench through the support frame, and the tabletop of the test bench is made of acid and alkali corrosion resistant materials.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111458287.9A CN114295681B (en) | 2021-12-02 | 2021-12-02 | Testing arrangement suitable for research of electrochemical gas sensor dust characteristic |
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| CN202111458287.9A CN114295681B (en) | 2021-12-02 | 2021-12-02 | Testing arrangement suitable for research of electrochemical gas sensor dust characteristic |
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| CN114295681B true CN114295681B (en) | 2023-09-15 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU881587A1 (en) * | 1978-12-19 | 1981-11-15 | Предприятие П/Я А-1813 | Electrochemically active gas analyzer |
| JPS6255552A (en) * | 1985-09-04 | 1987-03-11 | Toray Ind Inc | Oxygen analyzer |
| DE102014012914A1 (en) * | 2014-09-05 | 2016-03-10 | Elementar Analysensysteme Gmbh | Methods and analyzers for the optional analysis of one or more of carbon (C), sulfur (S), nitrogen (N), oxygen (O) and hydrogen (H) in metals or other inorganic samples |
| CN205374362U (en) * | 2016-01-11 | 2016-07-06 | 北京安赛克科技有限公司 | Electro -chemical sensor |
| CN105891054A (en) * | 2016-03-29 | 2016-08-24 | 中国矿业大学(北京) | Dust moisture absorption characteristic tester |
| CN208239259U (en) * | 2018-05-18 | 2018-12-14 | 南京宁馨净化工程有限公司 | A kind of colour developing formula air self-measuring device |
| CN211825293U (en) * | 2020-03-04 | 2020-10-30 | 江苏聚源中安生态环境有限公司 | Volatile organic compound monitor applied to ambient air monitoring |
| CN112730546A (en) * | 2020-12-28 | 2021-04-30 | 武汉理工大学 | Portable flue gas analysis device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6623620B2 (en) * | 1999-11-22 | 2003-09-23 | Hathaway Brown School | Method for detecting or monitoring sulfur dioxide with an electrochemical sensor |
| WO2008153593A1 (en) * | 2006-11-10 | 2008-12-18 | Bourns Inc. | Nanomaterial-based gas sensors |
-
2021
- 2021-12-02 CN CN202111458287.9A patent/CN114295681B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU881587A1 (en) * | 1978-12-19 | 1981-11-15 | Предприятие П/Я А-1813 | Electrochemically active gas analyzer |
| JPS6255552A (en) * | 1985-09-04 | 1987-03-11 | Toray Ind Inc | Oxygen analyzer |
| DE102014012914A1 (en) * | 2014-09-05 | 2016-03-10 | Elementar Analysensysteme Gmbh | Methods and analyzers for the optional analysis of one or more of carbon (C), sulfur (S), nitrogen (N), oxygen (O) and hydrogen (H) in metals or other inorganic samples |
| CN205374362U (en) * | 2016-01-11 | 2016-07-06 | 北京安赛克科技有限公司 | Electro -chemical sensor |
| CN105891054A (en) * | 2016-03-29 | 2016-08-24 | 中国矿业大学(北京) | Dust moisture absorption characteristic tester |
| CN208239259U (en) * | 2018-05-18 | 2018-12-14 | 南京宁馨净化工程有限公司 | A kind of colour developing formula air self-measuring device |
| CN211825293U (en) * | 2020-03-04 | 2020-10-30 | 江苏聚源中安生态环境有限公司 | Volatile organic compound monitor applied to ambient air monitoring |
| CN112730546A (en) * | 2020-12-28 | 2021-04-30 | 武汉理工大学 | Portable flue gas analysis device |
Non-Patent Citations (4)
| Title |
|---|
| Review—Recent Advances in Electrochemical Impedance Spectroscopy Based Toxic Gas Sensors Using Semiconducting Metal Oxides;V. Balasubramani et al.,;Journal of The Electrochemical Society;第167卷;第1-12页 * |
| 新型多波长红外同步粉尘、气体浓度传感器;张曦雯;李立京;梁生;张春熹;;红外技术(01);第35-38页 * |
| 波纹翅片管换热器表面粉尘沉积特性的实验研究;詹飞龙;唐家俊;丁国良;庄大伟;;制冷学报(02);第16-45页 * |
| 激光在粉尘媒质中传输的模拟实验研究;黄静;张静;葛一凡;袁纵横;;激光与红外(09);第954-956页 * |
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