CN218602376U - Photoionization ultraviolet lamp electrode device - Google Patents
Photoionization ultraviolet lamp electrode device Download PDFInfo
- Publication number
- CN218602376U CN218602376U CN202223078477.0U CN202223078477U CN218602376U CN 218602376 U CN218602376 U CN 218602376U CN 202223078477 U CN202223078477 U CN 202223078477U CN 218602376 U CN218602376 U CN 218602376U
- Authority
- CN
- China
- Prior art keywords
- ultraviolet lamp
- photoionization
- lamp
- annular
- electrode assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
The utility model provides a photoionization ultraviolet lamp electrode device relates to gaseous detection technical field. The photoionization ultraviolet lamp electrode device comprises a shell, an ultraviolet lamp and two annular electrodes, wherein a cavity is formed in the shell, and the ultraviolet lamp is arranged in the cavity. The two annular electrodes are respectively sleeved on the periphery of the ultraviolet lamp, the two annular electrodes are spaced at a preset distance, and the annular electrodes are made of flexible conductive materials. The embodiment of the utility model provides a photoionization ultraviolet lamp electrode assembly, because the discharge passage is on a parallel with the ultraviolet lamp fluorescent tube, the life-span of ultraviolet lamp obtains the extension. The annular electrode is made of flexible conductive materials, and no air gap is formed between the annular electrode and the outer wall of the ultraviolet lamp, so that the discharge stability and uniformity of the photoionization ultraviolet lamp electrode device are good, water vapor is prevented from entering the side wall of the ultraviolet lamp, the light emitting stability of the ultraviolet lamp is ensured, and the detection precision of the photoionization sensor or instrument is improved.
Description
Technical Field
The utility model relates to a gaseous detection technology field especially relates to a photoionization ultraviolet lamp electrode assembly.
Background
The photoionization detector (PID detector) can detect organic volatile pollutants in air and organic pollutants in water and soil, and is increasingly widely used in the fields of environmental protection monitoring, gas safety monitoring and the like. The photoionization detector has the characteristics of convenient use and high sensitivity. The photoionization ultraviolet lamp electrode device is an important element of a photoionization detector and has a specific ionization energy (e.g., 10.6 eV). Ultraviolet (UV) light generated by the photoionization ultraviolet lamp electrode device bombards gas molecules in the ionization chamber, and ionizes organic matter molecules contained in the gas and breaks the organic matter molecules into positively charged ions and negatively charged electrons. Under the action of the electric field of the polarizing plate, positively charged ions and negatively charged electrons collide with the plate, thereby forming a weak ion current which can be detected. The ion currents are amplified by a micro-current amplifier and then can be used for measuring the concentration of organic matters.
The commonly used electrode device of photoionization ultraviolet lamp adopts sheet metal electrodes, and the two sheet metal electrodes are attached to the two sides of the ultraviolet lamp. Specifically, two sheet metal electrodes, such as electronic potting adhesive, are fixed inside the detector and on both sides of the ultraviolet lamp mounting position by various methods, and then a high-voltage high-frequency alternating-current electric field is applied to the two sheet metal electrodes to cause the ultraviolet lamp to emit ultraviolet light.
The existing photoionization ultraviolet lamp electrode devices have a plurality of defects. If the distance between the installation positions of the two sheet metal electrodes is too close, the ultraviolet lamp is not easy to plug in; if the distance between the two sheet metal electrodes is too far, an air gap exists between the sheet metal electrodes and the ultraviolet lamp, which affects the brightness of the ultraviolet lamp and may not be lighted. The sheet metal electrodes cannot be completely attached to the side wall of the ultraviolet lamp, some places are tightly attached, and some places are loosely attached, so that the ultraviolet lamp is not uniform in discharge. When such a photoionization detector is mass-produced, the uniformity of the photoionization detector is poor. When ultraviolet lamps of different brands or different batches of ultraviolet lamps of the same manufacturer are replaced, the installation is not smooth due to the tolerance problem of the outer diameter of the ultraviolet lamps, or an air gap is formed, so that the luminous intensity is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a photoionization ultraviolet lamp electrode assembly for there is the air gap between two sheet metal electrodes and the ultraviolet lamp among the solution prior art, leads to photoionization ultraviolet lamp electrode assembly to discharge the poor technical problem of stability and homogeneity.
The utility model provides a photoionization ultraviolet lamp electrode device, include:
a housing having a cavity formed therein;
an ultraviolet lamp disposed within the cavity;
the two annular electrodes are respectively sleeved on the periphery of the ultraviolet lamp and are separated by a preset distance, and the annular electrodes are made of flexible conductive materials.
According to the utility model discloses a photoionization ultraviolet lamp electrode assembly who provides still includes:
and the two conductive connecting pieces are arranged in the cavity and are respectively electrically connected with the corresponding annular electrodes.
According to the utility model discloses a pair of photoionization ultraviolet lamp electrode assembly is provided, electrically conductive connecting piece is the annular, electrically conductive connecting piece cover is located correspondingly ring electrode's periphery.
According to the utility model discloses a photoionization ultraviolet lamp electrode assembly who provides still includes:
the isolating piece is arranged between the two conductive connecting pieces and is respectively abutted against the two conductive connecting pieces, and the isolating piece is made of a non-conductive material.
According to the utility model provides a pair of photoionization ultraviolet lamp electrode assembly, the separator is the annular, the separator cover is located the periphery of ultraviolet lamp.
According to the utility model provides a pair of photoionization ultraviolet lamp electrode assembly, the external diameter of separator with the external diameter of electrically conductive connecting piece equals.
According to the utility model provides a pair of photoionization ultraviolet lamp electrode assembly, ring electrode's internal diameter is less than the external diameter of ultraviolet lamp, ring electrode's material is conductive rubber.
According to the utility model discloses a photoionization ultraviolet lamp electrode assembly is provided, the casing includes:
the first end of the shell is provided with a first opening, the second end of the shell is provided with a second opening, the shell is sleeved on the periphery of the ultraviolet lamp, and the conductive connecting piece and the annular electrode are positioned in an annular space between the shell and the ultraviolet lamp;
the tailstock is inserted into the shell through the first opening.
According to the utility model provides a pair of photoionization ultraviolet lamp electrode assembly, the first end of tailstock is inserted and is located the shell with in the annular space between the ultraviolet lamp, the first end of tailstock with be close to first open-ended electrically conductive connecting piece butt.
According to the utility model provides a pair of photoionization ultraviolet lamp electrode assembly, the external diameter of tailstock equals the external diameter of electrically conductive connecting piece, the first end of ultraviolet lamp is in the outside of shell, the external diameter of the first end of ultraviolet lamp is greater than second open-ended internal diameter.
The embodiment of the utility model provides a photoionization ultraviolet lamp electrode assembly is through applying high-pressure high frequency alternating current electric field between two ring electrodes for the inside discharge passage that is on a parallel with the ultraviolet lamp fluorescent tube that forms of ultraviolet lamp produces the ultraviolet ray. Because the discharge channel is parallel to the ultraviolet lamp tube, and the length of the discharge channel does not exceed the distance between the two annular electrodes, electrons and plasma generated by discharge cannot strike the lamp wall and the light outlet window. Thus, the life of the ultraviolet lamp is extended. The discharge parameters of the electrode device of the photoionization ultraviolet lamp are fixed due to the fixed preset distance of the two annular electrodes. The annular electrode is made of flexible conductive material, and no air gap is formed between the annular electrode and the outer wall of the ultraviolet lamp, so that the discharge stability and uniformity of the photoionization ultraviolet lamp electrode device are good. Because the material of annular electrode is flexible conducting material, annular electrode has sealed effect, prevents that steam from getting into the ultraviolet lamp lateral wall, guarantees the luminous stability of ultraviolet lamp discharge.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the following briefly introduces the drawings required for the embodiments or the prior art descriptions, and obviously, the drawings in the following description are 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 front view of an electrode device of a photoionization ultraviolet lamp provided by an embodiment of the present invention;
FIG. 2 isbase:Sub>A schematic diagram ofbase:Sub>A cross-sectional side view of an electrode assembly ofbase:Sub>A photoionization UV lamp along section line A-A according to an embodiment of the present invention;
fig. 3 is a schematic perspective view of an electrode assembly of a photoionization ultraviolet lamp provided by an embodiment of the present invention;
fig. 4 is a schematic perspective view of a housing provided in an embodiment of the present invention;
fig. 5 is a schematic perspective view of a tailstock provided in an embodiment of the present invention;
fig. 6 is a schematic perspective view of an ultraviolet lamp according to an embodiment of the present invention.
Reference numerals are as follows:
100. a housing; 110. a housing; 120. a tailstock; 200. an ultraviolet lamp; 300. a ring electrode; 400. a conductive connection member; 500. a spacer.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description of the embodiments and for simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the embodiments of the present invention can be understood in specific cases by those skilled in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, a first feature may be "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description of the present specification, references to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
The electrode assembly of a photoionization uv lamp according to an embodiment of the present invention will be described with reference to fig. 1 to 6.
Fig. 1 illustratesbase:Sub>A schematic structural view ofbase:Sub>A main view ofbase:Sub>A photoionization ultraviolet lamp electrode device provided by an embodiment of the present invention, and fig. 2 illustratesbase:Sub>A schematic structural view ofbase:Sub>A side view section of the photoionization ultraviolet lamp electrode device provided by an embodiment of the present invention alongbase:Sub>A section linebase:Sub>A-base:Sub>A, as shown in fig. 1 and fig. 2, the photoionization ultraviolet lamp electrode device includesbase:Sub>A housing 100, an ultraviolet lamp 200 and two ring electrodes 300,base:Sub>A cavity is formed inside the housing 100, and the ultraviolet lamp 200 is disposed in the cavity. The two annular electrodes 300 are respectively sleeved on the periphery of the ultraviolet lamp 200, the two annular electrodes 300 are spaced at a predetermined distance, and the annular electrodes 300 are made of a flexible conductive material.
The embodiment of the utility model provides a photoionization ultraviolet lamp electrode assembly is through applying high-pressure high frequency alternating current electric field between two ring electrode 300 for 200 inside discharge channel that form on a parallel with the 200 fluorescent tubes of ultraviolet lamp and production ultraviolet ray of ultraviolet lamp. Because the discharge channel is parallel to the lamp tube of the ultraviolet lamp 200, and the length of the discharge channel does not exceed the distance between the two ring electrodes 300, electrons and plasma generated by discharge do not hit the lamp wall and the light-emitting window. Accordingly, the life of the ultraviolet lamp 200 is extended. Since the predetermined distance between the two ring electrodes 300 is fixed, the discharge parameters of the electrode assembly of the photoionization ultraviolet lamp are fixed. Because the material of the annular electrode 300 is a flexible conductive material, no air gap exists between the annular electrode 300 and the outer wall of the ultraviolet lamp 200, and the discharge stability and uniformity of the photoionization ultraviolet lamp electrode device are good. Because the material of the annular electrode 300 is a flexible conductive material, the annular electrode 300 has a sealing effect, so that water vapor is prevented from entering the side wall of the ultraviolet lamp 200, and the stability of the discharge and luminescence of the ultraviolet lamp 200 is ensured.
Because the material of ring electrode 300 is flexible conducting material, the embodiment of the utility model provides a photoionization ultraviolet lamp electrode assembly can adapt to the various ultraviolet lamps 200 in the tolerance range, and the uniformity is good during batch production, the stable performance. During field maintenance, the ultraviolet lamp 200 can be conveniently taken out, installed and replaced, the installation angle can be changed randomly, the discharge intensity of an electrode device of the photoionization ultraviolet lamp cannot be influenced, and the instrument performance stability of the photoionization detector is good.
In an embodiment of the present invention, the predetermined distance between the two ring electrodes 300 may be determined according to the model of the ultraviolet lamp 200. The excitation voltage of the ultraviolet lamp 200 may be varied by adjusting a predetermined distance between the two ring electrodes 300 so that the efficiency ratio of the ultraviolet lamp 200 is optimized.
In the embodiment of the present invention, the photoionization ultraviolet lamp electrode assembly further includes two conductive connecting members 400, the two conductive connecting members 400 are disposed in the cavity, and the conductive connecting members 400 are electrically connected to the corresponding ring electrodes 300 respectively. The conductive wires may be conducted to the corresponding ring electrodes 300 through the two conductive connections 400 so as to apply a high voltage and high frequency alternating electric field between the two ring electrodes 300. The conductive wire may be welded to the conductive connection member 400, ensuring stability of the conduction between the conductive wire and the corresponding ring electrode 300.
In the embodiment of the present invention, the conductive connecting member 400 is annular, and the conductive connecting member 400 is sleeved on the periphery of the corresponding annular electrode 300. The conductive connecting member 400 is tightly attached to the periphery of the ring electrode 300, and has a large contact area and no gap, thereby further improving the stability of the conduction between the conductive wire and the corresponding ring electrode 300.
In the embodiment of the present invention, the conductive connecting member 400 may be a copper ring, and the two ring electrodes 300 are embedded into the copper ring, so as to ensure the conductivity of the conductive connecting member 400. The copper ring may also be gold plated to improve the conductivity and corrosion resistance of the conductive connector 400.
In the embodiment of the present invention, the photoionization ultraviolet lamp electrode assembly further includes a spacer 500, the spacer 500 is disposed between two conductive connecting members 400, the spacer 500 is abutted to the two conductive connecting members 400 respectively, and the spacer 500 is made of a non-conductive material. The width of the spacer 500 is equal to the predetermined distance between the two ring electrodes 300 so that the distance between the two conductive connection members 400 is always maintained as the predetermined distance and the distance between the two ring electrodes 300 is also always maintained as the predetermined distance. The material of the spacer 500 is a non-conductive material, such as teflon plastic, to prevent the spacer 500 from conducting the two ring electrodes 300.
The utility model discloses an in the embodiment, isolator 500 is the annular, and the periphery of ultraviolet lamp 200 is located to isolator 500 cover, guarantees that isolator 500 installation stability is good.
In the embodiment of the present invention, the outer diameter of the spacer 500 is equal to the outer diameter of the conductive connecting member 400, and the outer diameter of the spacer 500 is also equal to the inner diameter of the housing 110, so as to ensure the compact assembly of the photoionization ultraviolet lamp electrode assembly.
In the embodiment of the present invention, the inner diameter of the ring electrode 300 is smaller than the outer diameter of the ultraviolet lamp 200, and the material of the ring electrode 300 is conductive rubber. Since the conductive rubber may be elastically deformed, the annular electrode 300 may be sleeved around the ultraviolet lamp 200 by elastic deformation, and it may be ensured that there is no gap between the annular electrode 300 and the ultraviolet lamp 200. Since there is no gap, the use of the conductive rubber as the ring electrode 300 can improve the discharge stability and uniformity of the electrode device of the photoionization ultraviolet lamp.
In the embodiment of the present invention, the outer diameter of the ultraviolet lamp 200 is 6mm, the annular electrode 300 is an inner diameter of 5.6mm, and the cross-sectional diameter of the annular electrode 300 is 1mm. Of course, the outer diameter of the ultraviolet lamp 200 and the inner diameter of the ring electrode 300 are not limited thereto, and are determined according to the model of the ultraviolet lamp 200.
Fig. 3 illustrates a schematic perspective view of the outer shell 110 provided in the embodiment of the present invention, and fig. 4 illustrates a schematic perspective view of the tailstock 120 provided in the embodiment of the present invention, as shown in fig. 3 and fig. 4, in the embodiment of the present invention, the shell 100 includes the outer shell 110 and the tailstock 120. A first opening is formed at a first end of the outer case 110, and a second opening is formed at a second end of the outer case 110. The outer shell 110 is sleeved on the outer periphery of the ultraviolet lamp 200, when the ultraviolet lamp 200 is installed, the ultraviolet lamp 200 is inserted into the outer shell 110 through the second opening, and the conductive connecting member 400 and the annular electrode 300 are located in an annular space between the outer shell 110 and the ultraviolet lamp 200. The tail seat 120 is inserted into the outer shell 110 through the first opening, and the material of the shell 100 may be teflon plastic.
Fig. 5 illustrates a schematic perspective view of an electrode assembly of a photoionization ultraviolet lamp provided by an embodiment of the present invention, as shown in fig. 5, a housing 110 and a tailstock 120 cooperate to form a cavity for accommodating an ultraviolet lamp 200, a conductive connecting member 400 and a ring electrode 300. The conductive connector 400 and the ring electrode 300 made of conductive rubber are embedded in the housing 110. After the ultraviolet lamp 200 is inserted into the housing 110, the ring electrode 300 is pressed to closely contact the outside of the ultraviolet lamp 200, there is no air gap between the ring electrode 300 and the ultraviolet lamp 200, and the ring electrode 300 can stably apply a high-voltage high-frequency ac electric field to the ultraviolet lamp 200.
In the embodiment of the present invention, the first end of the tail seat 120 is inserted into the annular space between the outer shell 110 and the ultraviolet lamp 200, and the first end of the tail seat 120 abuts against the conductive connecting member 400 near the first opening. Because the first end of the tail seat 120 abuts against the conductive connecting piece 400 close to the first opening, the conductive connecting piece 400 close to the first opening cannot move towards the tail seat 120, and the conductive connecting piece 400 close to the first opening is tightly attached to the isolating piece 500, so that the ultraviolet lamp 200 is ensured to be compactly assembled and cannot be loosened.
In the embodiment of the present invention, the outer diameter of the tailstock 120 is equal to the outer diameter of the conductive connecting member 400, the first end of the ultraviolet lamp 200 is located outside the housing 110, and the outer diameter of the first end of the ultraviolet lamp 200 is greater than the inner diameter of the second opening.
Fig. 6 illustrates a schematic perspective view of the ultraviolet lamp 200 provided in the embodiment of the present invention, as shown in fig. 6, a first end of the ultraviolet lamp 200 is provided with a limit ring, and the limit ring abuts against a second opening of the housing 110 to prevent the ultraviolet lamp 200 and the housing 110 from loosening. The second end of the ultraviolet lamp 200 is tapered to concentrate the ultraviolet light emitted from the ultraviolet lamp 200, and the second end of the ultraviolet lamp 200 does not contact the inner wall of the tail block 120.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A photoionization uv lamp electrode assembly, comprising:
a housing having a cavity formed therein;
an ultraviolet lamp disposed within the cavity;
the two annular electrodes are respectively sleeved on the periphery of the ultraviolet lamp and are separated by a preset distance, and the annular electrodes are made of flexible conductive materials.
2. The photoionized ultraviolet lamp electrode assembly of claim 1, further comprising:
and the two conductive connecting pieces are arranged in the cavity and are respectively and electrically connected with the corresponding annular electrodes.
3. The photoionization uv lamp electrode assembly of claim 2 wherein the conductive connecting member is annular and is disposed about the periphery of the corresponding annular electrode.
4. The photoionization uv lamp electrode assembly of claim 2 or claim 3, further comprising:
the isolating piece is arranged between the two conductive connecting pieces and is respectively abutted against the two conductive connecting pieces, and the isolating piece is made of a non-conductive material.
5. The photoionized uv lamp electrode assembly of claim 4 wherein the spacer is annular and the spacer is disposed around the outer periphery of the uv lamp.
6. The photoionized uv lamp electrode assembly of claim 4, wherein the spacer has an outer diameter equal to an outer diameter of the conductive connection.
7. The electrode assembly of photoionized uv lamp according to any one of claims 1 to 3, wherein the inner diameter of the ring electrode is smaller than the outer diameter of the uv lamp, and the ring electrode is made of a conductive rubber.
8. The photoionization uv lamp electrode assembly of claim 2 or claim 3 wherein the housing includes:
the first end of the shell is provided with a first opening, the second end of the shell is provided with a second opening, the shell is sleeved on the periphery of the ultraviolet lamp, and the conductive connecting piece and the annular electrode are positioned in an annular space between the shell and the ultraviolet lamp;
the tailstock is inserted into the shell through the first opening.
9. The photoionized uv lamp electrode assembly of claim 8 wherein a first end of the foot block is interposed in the annular space between the housing and the uv lamp, the first end of the foot block abutting the conductive link proximate the first opening.
10. The photoionized uv lamp electrode assembly of claim 8 wherein the tailstock has an outer diameter equal to the outer diameter of the conductive link, the first end of the uv lamp is external to the housing, and the first end of the uv lamp has an outer diameter greater than the inner diameter of the second opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223078477.0U CN218602376U (en) | 2022-11-18 | 2022-11-18 | Photoionization ultraviolet lamp electrode device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223078477.0U CN218602376U (en) | 2022-11-18 | 2022-11-18 | Photoionization ultraviolet lamp electrode device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218602376U true CN218602376U (en) | 2023-03-10 |
Family
ID=85407031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223078477.0U Active CN218602376U (en) | 2022-11-18 | 2022-11-18 | Photoionization ultraviolet lamp electrode device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218602376U (en) |
-
2022
- 2022-11-18 CN CN202223078477.0U patent/CN218602376U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7326926B2 (en) | Corona discharge ionization sources for mass spectrometric and ion mobility spectrometric analysis of gas-phase chemical species | |
| US8698075B2 (en) | Orthogonal ion injection apparatus and process | |
| EP2530702A1 (en) | Mass spectrometry device | |
| JPWO2007102224A1 (en) | Mass spectrometer | |
| EP1998171A2 (en) | Electrode contact pellet and associated photoionisation detector assembly | |
| CN218602376U (en) | Photoionization ultraviolet lamp electrode device | |
| US20040004441A1 (en) | External electrode type fluorescent lamp | |
| CN111105983B (en) | Normal-pressure photoionization power supply device enhanced by direct current | |
| US5561292A (en) | Mass spectrometer and electron impact ion source thereof | |
| CN111653471B (en) | Vacuum ultraviolet light composite ionization source for electrospray extraction | |
| CN105097413B (en) | Novel ion source and ionization method | |
| JP5524931B2 (en) | High pressure discharge lamp with auxiliary lamp | |
| WO2019082893A1 (en) | Gas analyzer | |
| CN213691957U (en) | Dielectric barrier glow discharge ion source structure | |
| CN1184324A (en) | Ion source block filament with labyrinth conductive path | |
| AU719247B2 (en) | A method for element-selective detection, a micro plasma mass spectrometer for use in the method and a micro plasma ion source, together with applications thereof | |
| US20130181604A1 (en) | High-pressure discharge lamp having a capacitive ignition aid | |
| CN112509907A (en) | Dielectric barrier glow discharge ion source structure | |
| US10600633B1 (en) | Gas discharge lamp | |
| CN212845168U (en) | PID sensor | |
| CN216213257U (en) | High-voltage isolation structure of ionization ultraviolet lamp for ion transfer tube | |
| EP0246248A1 (en) | Hollow cathode assembly and lamp | |
| CN219478187U (en) | Plasma tube | |
| CN217114309U (en) | Ionization ultraviolet lamp protection and sealing structure for ion mobility spectrometer | |
| CN217114308U (en) | Ionization ultraviolet lamp protection and sealing structure of integrated ion mobility spectrometer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |