CN112067750A - Probe capable of reducing humidity and detecting gas and novel gas detector - Google Patents
Probe capable of reducing humidity and detecting gas and novel gas detector Download PDFInfo
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- CN112067750A CN112067750A CN202010947537.4A CN202010947537A CN112067750A CN 112067750 A CN112067750 A CN 112067750A CN 202010947537 A CN202010947537 A CN 202010947537A CN 112067750 A CN112067750 A CN 112067750A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
- G01N33/0016—Sample conditioning by regulating a physical variable, e.g. pressure, temperature
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0006—Calibrating gas analysers
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
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Abstract
The invention provides a probe capable of detecting gas through humidity reduction and a novel gas detector, and solves the problem that the humidity of the detected gas influences the detection precision during gas detection. The invention comprises a probe shell, wherein the top of the probe shell is provided with an opening, the opening at the top of the probe shell is provided with a waterproof breathable film, the middle part of the probe shell is provided with a molecular sieve film, and the molecular sieve film can only pass water molecules and gas molecules with molecular volume smaller than that of the water molecules; the inner space of the probe shell is divided into a detection space and a water absorption space by a molecular sieve membrane, a gas-sensitive detection body and a temperature sensor probe are arranged on the wall body of the detection space, and a replaceable water absorption substance is filled in the water absorption space and is a substance which only absorbs water and does not react with the detected gas; the lower part of the probe shell is provided with a structure for replacing the water-absorbing substance.
Description
Technical Field
The invention relates to the technical field of gas detection, in particular to a probe capable of reducing humidity and detecting gas and a novel gas detector.
Background
In gas detection application in the industrial, agricultural and civil fields, when sensors such as semiconductors, catalysis, infrared sensors, PID and the like are used for detecting gas concentration, the accuracy of gas detection is greatly influenced by ambient temperature and humidity. In order to solve the temperature and humidity compensation problem, a large number of tests are required to obtain the temperature and humidity response curve of the sensor, and even if the temperature and humidity response curve is obtained, the compensation effect is not good.
At present, the common probe structure of the gas detector is basically provided with a waterproof breathable film for reducing the humidity of the detected gas, but in practical use, because the minimum passing object which can be stopped by the waterproof breathable film at present is 0.02 micron, water vapor is composed of water vapor molecules, and the diameter of the water vapor molecules is about: 0.0004 microns, so the waterproof and breathable film is impermeable to water vapor. Therefore, the waterproof breathable film can only filter liquid water and small water drops in the detected gas, but has no effect on gaseous water vapor, so that the detected gas entering the probe shell still contains certain humidity, and the detection precision of the gas-sensitive detection body is influenced.
Disclosure of Invention
The invention provides a probe capable of reducing humidity of a detected gas and a novel gas detector, and aims to solve the problem that the humidity of the detected gas influences the detection precision during gas detection in the background art.
The technical scheme of the invention is as follows: a probe capable of reducing humidity and detecting gas comprises a probe shell, wherein an opening is formed in the top of the probe shell, a waterproof breathable film is arranged at the opening in the top of the probe shell, a molecular sieve film is arranged in the middle of the probe shell, and the molecular sieve film can only pass water molecules and gas molecules with the molecular volume smaller than that of the water molecules; the inner space of the probe shell is divided into a detection space and a water absorption space by a molecular sieve membrane, a gas-sensitive detection body and a temperature sensor probe are arranged on the wall body of the detection space, and a replaceable water absorption substance is filled in the water absorption space and is a substance which only absorbs water and does not react with the detected gas; the lower part of the probe shell is provided with a structure for replacing the water-absorbing substance.
The water-absorbing substance is a liquid unsaturated salt solution, an alkali solution or an acid solution; or the water-absorbing substance is solid salt or solid alkali.
The lower part of the probe shell is provided with a hole for replacing the liquid water-absorbing substance, and the hole is sealed by adopting a detachable plug; or the probe shell comprises an upper probe shell and a lower probe shell which are in threaded connection; the waterproof ventilated membrane is arranged at the top of the upper probe shell, the molecular sieve membrane is arranged at the lower part of the upper probe shell, the lower probe shell is designed to be an upper opening, and the water absorbing substance is arranged in the lower probe shell.
A novel gas detector capable of detecting gas through moisture reduction comprises a gas detector body, wherein a probe is arranged at the top of the gas detector body and comprises a probe shell, an opening is formed in the top of the probe shell, a waterproof breathable film is arranged at the opening in the top of the probe shell, a molecular sieve film is arranged in the middle of the probe shell and can only pass water molecules and gas molecules with the molecular volume larger than that of the water molecules; the inner space of the probe shell is divided into a detection space and a water absorption space by a molecular sieve membrane, a gas-sensitive detection body and a temperature sensor probe are arranged on the wall body of the detection space, and a replaceable water absorption substance is filled in the water absorption space and is a substance which only absorbs water and does not react with the detected gas; the lower part of the probe shell is provided with a structure for replacing the water-absorbing substance.
The water-absorbing substance is a liquid unsaturated salt solution, an alkali solution or an acid solution; or the water-absorbing substance is solid salt or solid alkali.
The lower part of the probe shell is provided with a hole for replacing the liquid water-absorbing substance, and the hole is sealed by adopting a detachable plug; or the probe shell comprises an upper probe shell and a lower probe shell which are in threaded connection; the waterproof ventilated membrane is arranged at the top of the upper probe shell, the molecular sieve membrane is arranged at the lower part of the upper probe shell, the lower probe shell is designed to be an upper opening, and the water absorbing substance is arranged in the lower probe shell.
A PH value sensor probe for detecting the current PH value of the water absorbing material is embedded at the bottom of the shell; a PH value sensor body matched with the PH value sensor probe is arranged in the gas detector body.
The gas detector comprises a gas detector body, a telescopic pipe, an installation head, a thread hole I, a thread groove, a thread head, a cross-shaped thread hole II, a PH value sensor probe, a thread hole I, a horizontal left thread hole III, a horizontal right thread hole III, a horizontal slotted hole of the thread hole II, a horizontal groove of the thread hole II, a thread groove of the installation head, a thread head and a thread groove of the installation head, wherein the top of the telescopic pipe is provided with the installation head; the connecting lead of the gas-sensitive detection body enters the gas detector body from the wire hole III on the right side, the horizontal slotted hole of the wire hole II, the wire hole I and the telescopic pipe; a connecting lead of the PH value sensor probe enters the gas detector body from the vertical slotted hole of the wiring hole II, the wiring hole I and the telescopic pipe; the gas detector body is internally provided with a temperature sensor body, and a connecting lead of a temperature sensor probe enters the gas detector body from a horizontal slotted hole, a wiring hole I and a telescopic pipe from a wiring hole III on the left side and a wiring hole II to be connected with the temperature sensor body.
The invention has the advantages that: when the gas detector is used, when a detected gas enters a detection space through the waterproof breathable film, the contained liquid water drops are filtered by the waterproof filtering film, and the rest detected gas and gaseous water vapor molecules enter the detection space; at this time, two cases are distinguished: (1) the molecular volume of the gas to be detected is smaller than that of the water vapor molecules, and at the moment, the gas to be detected and the water vapor molecules can simultaneously pass through the molecular sieve membrane and enter the water absorption space; selecting a proper water-absorbing substance through the gas to be detected which is predicted in advance, wherein the water-absorbing substance only absorbs water and does not react with the gas to be detected, namely salt, acid or alkali, and a reaction product does not react with the gas to be detected, so that the water-absorbing substance or the reaction product does not react with the gas to be detected when the gas to be detected is dehydrated to influence the measurement accuracy; (2) the molecular volume of the gas to be detected is larger than that of the water vapor, only the water vapor molecules can pass through the molecular sieve membrane and enter the water absorption space at this time, the water absorption material at this time can be the same as that in the step (1), and can also be selected to react with water but not generate gas, or the molecular volume of the gas generated by the reaction with the water is larger than that of the gaseous water, so that the gas cannot penetrate through the molecular sieve membrane and enter the detection space, and the measurement precision of the gas-sensitive detection body is influenced.
The gas sensor probe built in the detection space directly measures the detected gas in the detection space, and can most directly monitor the temperature of the detected gas so as to carry out accurate temperature compensation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the main structure of a probe capable of reducing moisture content of a probe gas according to the present invention;
FIG. 2 is a schematic diagram of the main structure of one embodiment of the novel gas detector of the present invention;
FIG. 3 is a schematic view of the probe and its connection in FIG. 2;
FIG. 4 is a schematic diagram of the probe of FIG. 2;
in the figure, 1, a probe shell, 2, an upper probe shell, 201, a detection space, 3, a lower probe shell, 301, a water absorption space, 4, a waterproof breathable film, 5, a gas sensitive detection body, 6, a molecular sieve film, 7, a water absorption substance, 8, a screw head, 9, a pH value sensor probe, 10, an installation head, 11, a telescopic pipe, 12, a gas detector body, 13 and a temperature sensor probe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
An embodiment 1 of a probe capable of reducing moisture of a probe gas comprises a probe shell 1, as shown in fig. 1, wherein the probe shell 1 comprises an upper probe shell 2 and a lower probe shell 3, and the upper probe shell 2 is in threaded connection with the lower probe shell 3; the top of the probe shell 2 is designed to be an opening, a waterproof breathable film 4 is arranged at the opening at the top of the probe shell 2, a molecular sieve film 6 is arranged at the lower part of the probe shell 2, and the molecular sieve film 6 can only pass water molecules and gas molecules with the molecular volume smaller than that of the water molecules; the molecular sieve membrane 6 has a function of blocking the water-absorbent substance 7 from leaking into the detection space 201, not only for ventilation in the present structure.
The inner space of the probe shell 1 is divided into a detection space 201 and a water absorption space 301 by a molecular sieve membrane 6, the lower probe shell 3 is designed to be an upper opening, and the water absorption material 7 is arranged in the lower probe shell 3. The wall body of the detection space 201 is provided with a gas-sensitive detection body 5 and a temperature sensor probe 13, the water absorption space 301 is internally provided with a replaceable water absorbing substance 7, the water absorbing substance 7 is a substance which only absorbs water and does not react with the detected gas, the water absorbing substance 7 can be liquid unsaturated salt solution, alkali solution or acid solution, and the water absorbing substance 7 can also be solid salt or solid alkali.
The working principle is as follows: when the gas detector is used, when a detected gas enters a detection space through the waterproof breathable film, the contained liquid water drops are filtered by the waterproof filtering film, and the rest detected gas and gaseous water vapor molecules enter the detection space; at this time, two cases are distinguished: (1) the molecular volume of the gas to be detected is smaller than that of the water vapor molecules, and at the moment, the gas to be detected and the water vapor molecules can simultaneously pass through the molecular sieve membrane and enter the water absorption space; selecting a proper water-absorbing substance through the gas to be detected which is predicted in advance, wherein the water-absorbing substance only absorbs water and does not react with the gas to be detected, namely salt, acid or alkali, and a reaction product does not react with the gas to be detected, so that the water-absorbing substance or the reaction product does not react with the gas to be detected when the gas to be detected is dehydrated to influence the measurement accuracy; (2) the molecular volume of the gas to be detected is larger than that of the water vapor, only the water vapor molecules can pass through the molecular sieve membrane and enter the water absorption space at this time, the water absorption material at this time can be the same as that in the step (1), and can also be selected to react with water but not generate gas, or the molecular volume of the gas generated by the reaction with the water is larger than that of the gaseous water, so that the gas cannot penetrate through the molecular sieve membrane and enter the detection space, and the measurement precision of the gas-sensitive detection body is influenced. The gas sensor probe built in the detection space directly measures the detected gas in the detection space, and can most directly monitor the temperature of the detected gas so as to carry out accurate temperature compensation.
In the embodiment 2 of the probe capable of reducing the humidity of the detection gas, the lower part of a probe shell 1 is provided with a hole for replacing a liquid water absorbing substance 7, and the hole is sealed by adopting a detachable plug; the water-absorbing substance 7 may be a solid salt or a solid base. Other structures and working principles are the same as those of embodiment 1 of a probe capable of reducing moisture of a probe gas.
An embodiment 1 of a novel gas detector capable of detecting gas through humidity reduction is shown in fig. 2, fig. 3 and fig. 4, and comprises a gas detector body 12 and a probe, wherein a telescopic pipe 11 is arranged at the top of the gas detector body 12, an installation head 10 is arranged at the top of the telescopic pipe 11, a wire routing hole I communicated with the telescopic pipe 11 is formed in the center of the installation head 10, and a thread groove is formed in the middle of the installation head 10. The telescopic tube 11 is mainly used for pushing the probe to move so as to adapt to a narrower detection environment. The probe shell 1 comprises an upper probe shell 2 and a lower probe shell 3, and the upper probe shell 2 is in threaded connection with the lower probe shell 3; the top of the probe shell 2 is designed to be an opening, a waterproof breathable film 4 is arranged at the opening at the top of the probe shell 2, a molecular sieve film 6 is arranged at the lower part of the probe shell 2, and the molecular sieve film 6 can only pass water molecules and gas molecules with the molecular volume smaller than that of the water molecules; the molecular sieve membrane 6 has a function of blocking the water-absorbent substance 7 from leaking into the detection space 201, not only for ventilation in the present structure.
The inner space of the probe shell 1 is divided into a detection space 201 and a water absorption space 301 by a molecular sieve membrane 6, the lower probe shell 3 is designed to be an upper opening, and the water absorption material 7 is arranged in the lower probe shell 3. The wall body of the detection space 201 is provided with a gas-sensitive detection body 5 and a temperature sensor probe 13, the water absorption space 301 is internally provided with a replaceable water absorbing substance 7, the water absorbing substance 7 is a substance which only absorbs water and does not react with the detected gas, the water absorbing substance 7 can be liquid unsaturated salt solution, alkali solution or acid solution, and the water absorbing substance 7 can also be solid salt or solid alkali. A PH value sensor probe 9 for detecting the current PH value of the water absorbing material 7 is embedded at the bottom of the shell 1. The gas detector body 12 is internally provided with a PH value sensor body matched with the PH value sensor probe 9. The pH value of the water-absorbing substance is monitored in real time through a pH value sensor probe 9 to judge the concentration of the solution, and then whether the current water-absorbing capacity of the water-absorbing substance meets the requirement or not and whether the water-absorbing substance needs to be replaced or not is judged.
The bottom of the lower shell 3 is provided with a threaded head 8, the threaded head 8 is in threaded connection with a threaded groove, a cross-shaped wiring hole II is arranged in the threaded head 8, a vertical slotted hole of the wiring hole II corresponds to a PH value sensor probe 9 and the wiring hole I up and down, the middle part of the mounting head 10 is provided with a horizontal left wiring hole III and a horizontal right wiring hole III, and the wiring holes III correspond to the horizontal slotted holes of the wiring hole II; connecting wires of the gas-sensitive detector 5 enter the gas detector body 12 from a wire hole III on the right side, a horizontal slotted hole of a wire hole II, a wire hole I and a telescopic pipe 10; the connecting lead of the PH value sensor probe 9 enters the gas detector body 12 from the vertical slotted hole of the wiring hole II, the wiring hole I and the telescopic tube 10; a temperature sensor body is arranged in the gas detector body 12, and connecting wires of the temperature sensor probe 13 enter the gas detector body 12 from a wire feeding hole III on the left side, a horizontal slotted hole of a wire feeding hole II, a wire feeding hole I and the telescopic pipe 10 to be connected with the temperature sensor body.
The working principle is as follows: when the gas detector is used, when a detected gas enters a detection space through the waterproof breathable film, the contained liquid water drops are filtered by the waterproof filtering film, and the rest detected gas and gaseous water vapor molecules enter the detection space; at this time, two cases are distinguished: (1) the molecular volume of the gas to be detected is smaller than that of the water vapor molecules, and at the moment, the gas to be detected and the water vapor molecules can simultaneously pass through the molecular sieve membrane and enter the water absorption space; selecting a proper water-absorbing substance through the gas to be detected which is predicted in advance, wherein the water-absorbing substance only absorbs water and does not react with the gas to be detected, namely salt, acid or alkali, and a reaction product does not react with the gas to be detected, so that the water-absorbing substance or the reaction product does not react with the gas to be detected when the gas to be detected is dehydrated to influence the measurement accuracy; (2) the molecular volume of the gas to be detected is larger than that of the water vapor, only the water vapor molecules can pass through the molecular sieve membrane and enter the water absorption space at this time, the water absorption material at this time can be the same as that in the step (1), and can also be selected to react with water but not generate gas, or the molecular volume of the gas generated by the reaction with the water is larger than that of the gaseous water, so that the gas cannot penetrate through the molecular sieve membrane and enter the detection space, and the measurement precision of the gas-sensitive detection body is influenced. The gas sensor probe built in the detection space directly measures the detected gas in the detection space, and can most directly monitor the temperature of the detected gas so as to carry out accurate temperature compensation.
In embodiment 2 of the novel gas detector capable of reducing the humidity of the detected gas, a hole for replacing a liquid water absorbing substance 7 is formed in the lower portion of a probe shell 1, and the hole is sealed by adopting a detachable plug; the water-absorbing substance 7 may be a solid salt or a solid base. Other structures and working principles are the same as those of the embodiment 1 of the novel gas detector capable of reducing the humidity and detecting the gas.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. A probe capable of reducing moisture of probe gas is characterized in that: the probe comprises a probe shell (1), wherein an opening is formed in the top of the probe shell (1), a waterproof breathable film (4) is arranged at the opening in the top of the probe shell (1), a molecular sieve film (6) is arranged in the middle of the probe shell (1), and the molecular sieve film (6) can only pass water molecules and gas molecules with molecular volumes smaller than the water molecules; the inner space of the probe shell (1) is divided into a detection space (201) and a water absorption space (301) by a molecular sieve membrane (6), a gas-sensitive detection body (5) and a temperature sensor probe (13) are arranged on the wall body of the detection space (201), a replaceable water absorbing substance (7) is arranged in the water absorption space (301), and the water absorbing substance (7) is a substance which only absorbs water and does not react with the detected gas; the lower part of the probe shell (1) is provided with a structure for replacing the water-absorbing material (7).
2. The probe capable of reducing moisture of a probe gas according to claim 1, wherein: the water-absorbing substance (7) is a liquid unsaturated salt solution, an alkali solution or an acid solution; or the water-absorbing substance (7) is solid salt or solid alkali.
3. The probe capable of reducing moisture of a probe gas according to claim 2, wherein: the lower part of the probe shell (1) is provided with a hole for replacing the liquid water-absorbing material (7), and the hole is sealed by adopting a detachable plug; or the probe shell (1) comprises an upper probe shell (2) and a lower probe shell (3), and the upper probe shell (2) is in threaded connection with the lower probe shell (3); the waterproof breathable membrane (4) is arranged at the top of the upper probe shell (2), the molecular sieve membrane (6) is arranged at the lower part of the upper probe shell (2), the lower probe shell (3) is designed to be an upper opening, and the water absorbing substance (7) is arranged in the lower probe shell (3).
4. The utility model provides a novel gas detector of gaseous survey of degradable wetting, includes gas detector body (12), and the top of gas detector body (12) is equipped with probe, its characterized in that: the probe comprises a probe shell (1), an opening is formed in the top of the probe shell (1), a waterproof breathable film (4) is arranged at the opening in the top of the probe shell (1), a molecular sieve film (6) is arranged in the middle of the probe shell (1), and the molecular sieve film (6) can only pass water molecules and gas molecules with molecular volumes larger than that of the water molecules; the inner space of the probe shell (1) is divided into a detection space (201) and a water absorption space (301) by a molecular sieve membrane (6), a gas-sensitive detection body (5) and a temperature sensor probe (13) are arranged on the wall body of the detection space (201), a replaceable water absorbing substance (7) is arranged in the water absorption space (301), and the water absorbing substance (7) is a substance which only absorbs water and does not react with the detected gas; the lower part of the probe shell (1) is provided with a structure for replacing the water-absorbing material (7).
5. The novel gas detector capable of detecting gas by moisture reduction according to claim 4, wherein: the water-absorbing substance (7) is a liquid unsaturated salt solution, an alkali solution or an acid solution; or the water-absorbing substance (7) is solid salt or solid alkali.
6. The novel gas detector capable of detecting gas by moisture reduction according to claim 5, wherein: the lower part of the probe shell (1) is provided with a hole for replacing the liquid water-absorbing material (7), and the hole is sealed by adopting a detachable plug; or the probe shell (1) comprises an upper probe shell (2) and a lower probe shell (3), and the upper probe shell (2) is in threaded connection with the lower probe shell (3); the waterproof breathable membrane (4) is arranged at the top of the upper probe shell (2), the molecular sieve membrane (6) is arranged at the lower part of the upper probe shell (2), the lower probe shell (3) is designed to be an upper opening, and the water absorbing substance (7) is arranged in the lower probe shell (3).
7. The novel gas detector capable of detecting gas by moisture reduction according to claim 5, wherein: a PH value sensor probe (9) for detecting the current PH value of the water absorbing material (7) is embedded at the bottom of the shell (1); a PH value sensor body matched with the PH value sensor probe (9) is arranged in the gas detector body (12).
8. The novel gas detector capable of detecting gas by moisture reduction according to claim 7, wherein: the gas detector comprises a gas detector body (12) and is characterized in that a telescopic pipe (11) is arranged at the top of the gas detector body (12), an installing head (10) is arranged at the top of the telescopic pipe (11), a wire passing hole I communicated with the telescopic pipe (11) is formed in the center of the installing head (10), a thread groove is formed in the middle of the installing head (10), a thread head (8) is arranged at the bottom of a lower shell (3), the thread head (8) is in threaded connection with the thread groove, a cross-shaped wire passing hole II is formed in the thread head (8), a vertical slotted hole of the wire passing hole II corresponds to a PH value sensor probe (9) and the wire passing hole I up and down, a horizontal left wire passing hole III and a horizontal right wire passing hole III are; connecting wires of the gas-sensitive detection body (5) enter the gas detector body (12) from a wire feeding hole III on the right side, a horizontal slotted hole of a wire feeding hole II, a wire feeding hole I and a telescopic pipe (10); a connecting lead of the PH value sensor probe (9) enters the gas detector body (12) from the vertical slotted hole of the wiring hole II, the wiring hole I and the telescopic pipe (10); a temperature sensor body is arranged in the gas detector body (12), and connecting wires of a temperature sensor probe (13) enter the gas detector body (12) from a horizontal slotted hole of a wire feeding hole III and a wire feeding hole II on the left side, a wire feeding hole I and a telescopic pipe (10) to be connected with the temperature sensor body.
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| CN202010947537.4A CN112067750B (en) | 2020-09-10 | 2020-09-10 | Probe capable of dehumidifying and detecting gas and novel gas detector |
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| CN202010947537.4A CN112067750B (en) | 2020-09-10 | 2020-09-10 | Probe capable of dehumidifying and detecting gas and novel gas detector |
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