CN205484193U - Photo -ionization detector - Google Patents
Photo -ionization detector Download PDFInfo
- Publication number
- CN205484193U CN205484193U CN201521122451.9U CN201521122451U CN205484193U CN 205484193 U CN205484193 U CN 205484193U CN 201521122451 U CN201521122451 U CN 201521122451U CN 205484193 U CN205484193 U CN 205484193U
- Authority
- CN
- China
- Prior art keywords
- electrode
- photoionization
- sensor
- detection sensor
- ionization chamber
- 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
Landscapes
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
The utility model provides a photoionization detects the sensor, including ionization chamber, driving electrode with be located driving electrode's ultraviolet lamp, the ionization chamber includes collector electrode and polarization electrode, the collector electrode sets up the ultraviolet lamp lower part, the polarization electrode sets up parallelly the collector electrode below, the collector electrode with set up the electrode spacer ring between the polarization electrode, the ultraviolet lamp exit window has been seted up on the collector electrode, the inlet port has been seted up on the polarization electrode, one side of electrode spacer ring is equipped with the venthole, a photo -ionization detector, includes photoionization detects the sensor, box and PCB circuit board keep warm, photoionization detection sensor is twisted and is established on the PCB circuit board, photoionization detects the sensor cover and establishes in the heat preservation box. The utility model discloses a reduce the ionization chamber and accelerateed gaseously by ionized process, improved ionization efficiency, increased the transducer sensitivity.
Description
Technical field
This utility model relates to detection field, specifically, relates to a kind of photoionization detector.
Background technology
Photoionization detector uses uviol lamp (UV) light source to launch high energy ultraviolet, and gas molecule, under the irradiation of ultraviolet light, absorbs the energy of photon, produces cation and electronics.Under the effect of high voltage electric field, electronics is absorbed by the passive electrode of photoionization detector, forms weak current.Owing to gas concentration is linear with size of current, therefore i.e. be can get the concentration of tested gas by detection size of current.After leaving the irradiation area of ultraviolet light, cation and electronics are combined again, and therefore photoionization detector belongs to non-damaged data, before being placed in other detectors.
Tradition photoionization detector ionization chamber volume is relatively big, causes gas absorption and desorption time longer, and mostly is the design of open ionization chamber, is not suitable for gas chromatograph.
Utility model content
The purpose of this utility model is for the deficiencies in the prior art, it is provided that the photoionization detector that a kind of simple in construction, ionizing efficiency are high, applied widely.
To achieve these goals, this utility model be the technical scheme is that a kind of photoionization detection sensor, including ionization chamber, drive electrode and the uviol lamp being positioned at drive electrode, described ionization chamber includes passive electrode and polarizing electrode, described passive electrode is arranged on described uviol lamp bottom, described polarizing electrode is arranged on below described passive electrode abreast, electrode spacer ring is set between described passive electrode and described polarizing electrode, uviol lamp exit window is offered on described passive electrode, air inlet is offered on described polarizing electrode, the side of described electrode spacer ring is provided with venthole.
Preferably, described uviol lamp exit window is coaxially disposed with described air inlet.
Preferably, described passive electrode and polarizing electrode thickness are 0.1mm.
Preferably, being coated with sensor base outside described ionization chamber, described sensor base is provided with the inlet channel connected with air inlet and the outlet passageway connected with venthole.
A kind of photoionization detector, detects sensor, incubation chamber and PCB including the photoionization described in claim 4；It is provided with venting channels in described PCB, described photoionization detection sensor is twisted and is located in described PCB, described inlet channel connects with described venting channels, and described photoionization detection sensor wrap is located in described incubation chamber, and described incubation chamber is arranged in described PCB.
Preferably, it is provided with heating rod and temperature sensor in described incubation chamber.
Preferably, described temperature sensor is PT100 temperature sensor.
This utility model hinge structure has substantive distinguishing features and progress, specifically, this utility model shortens gas absorption and desorption time by reducing ionization chamber, accelerates the process that gas is ionized, improve ionizing efficiency and transducer sensitivity, also increase its scope of application simultaneously.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of photoionization detection sensor.
Fig. 2 is photoionization detector structural representation.
In figure, 1. uviol lamp, 2. drive electrode, 3. passive electrode, 4. polarizing electrode, 5. electrode spacer ring, 6. uviol lamp exit window, 7. air inlet, 8. venthole, 9. sensor base, 10. inlet channel, 11. outlet passageways, 12. heating rods, 13. temperature sensors, 14. incubation chamber, 15.PCB circuit board.
Detailed description of the invention
Below by detailed description of the invention, the technical solution of the utility model is described in further detail.
As shown in Figure 1, a kind of photoionization detection sensor, including ionization chamber, drive electrode 2 and the uviol lamp 1 being positioned at drive electrode 2, described ionization chamber includes passive electrode 3 and polarizing electrode 4, described passive electrode 3 is arranged on described uviol lamp 1 bottom, described polarizing electrode 4 is arranged on below described passive electrode 3 abreast, between described passive electrode 3 and described polarizing electrode 4, electrode spacer ring 5 is set, uviol lamp exit window 6 is offered on described passive electrode 3, offering air inlet 7 on described polarizing electrode 4, the side of described electrode spacer ring 5 is provided with venthole 8.
Preferably, described uviol lamp exit window 6 is coaxially disposed with described air inlet 7 so that gas is directly ionized after entering ionization chamber, improves ionizing efficiency, increases transducer sensitivity.
Preferably, being coated with sensor base 9 outside described ionization chamber, described sensor base 9 is provided with the inlet channel 10 connected with air inlet 7 and the outlet passageway 11 connected with venthole 8, arranges external screw thread outside described outlet passageway 11.When this photoionization detection sensor is for gas chromatograph, chromatographic column can use nut and graphite pressure ring chromatographic column and inlet channel to be sealed after inserting inlet channel 10.
Preferably, described passive electrode 3 and polarizing electrode 4 thickness are 0.1mm, so can adjust ionization chamber volume by reducing the internal ring volume of electrode spacer ring 5, shorten gas absorption and desorption time.
As in figure 2 it is shown, a kind of photoionization detector, including described photoionization detection sensor I, incubation chamber 14 and PCB 15；It is provided with venting channels in described PCB 15, described photoionization detection sensor I is twisted and is located in described PCB 15, described inlet channel 10 connects with described venting channels, described photoionization detection sensor I is located in described incubation chamber 14, and described incubation chamber 14 is arranged in described PCB 15；Heating rod 12 and temperature sensor 13 it is provided with, for controlling the operating temperature of photoionization detection sensor I, it is preferred that described temperature sensor 13 is PT100 temperature sensor in described incubation chamber 14.
When using this photoionization detector, first turn on heating rod 12, and control the working temperature constant of photoionization detection sensor I at 100 DEG C.After adding the alternating current drive signal of 1KV on the drive electrode 2 shown in Fig. 1, uviol lamp 1 is lit；Gas to be detected, after air inlet 7 enters ionization chamber, is ionized into cation and electronics under the irradiation of the ultraviolet light sent at uviol lamp 1；Owing to being connected to-200V high direct voltage on polarizing electrode 4, passive electrode 3 ground connection, therefore under the effect of polarizing electrode 4 electric field, cation is adsorbed onto on polarizing electrode 4, electronics gathers on passive electrode 3 and produces Weak current, i.e. can determine that the concentration of gas to be detected now by the electric current on detection passive electrode 3.
Finally should be noted that: above example is only in order to illustrate that the technical solution of the utility model is not intended to limit；Although being described in detail this utility model with reference to preferred embodiment, those of ordinary skill in the field are it is understood that still can modify to detailed description of the invention of the present utility model or portion of techniques feature is carried out equivalent；Without deviating from the spirit of technical solutions of the utility model, it all should be contained in the middle of the technical scheme scope that this utility model is claimed.
Claims (7)
1. a photoionization detection sensor, including ionization chamber, drive electrode and the uviol lamp being positioned at drive electrode, it is characterized in that: described ionization chamber includes passive electrode and polarizing electrode, described passive electrode is arranged on described uviol lamp bottom, described polarizing electrode is arranged on below described passive electrode abreast, electrode spacer ring is set between described passive electrode and described polarizing electrode, uviol lamp exit window is offered on described passive electrode, offering air inlet on described polarizing electrode, the side of described electrode spacer ring is provided with venthole.
Photoionization the most according to claim 1 detection sensor, it is characterised in that: described uviol lamp exit window is coaxially disposed with described air inlet.
Photoionization the most according to claim 2 detection sensor, it is characterised in that: described passive electrode and polarizing electrode thickness are 0.1mm.
4. detect sensor according to the photoionization described in any one of claim 1-3, it is characterised in that: being coated with sensor base outside described ionization chamber, described sensor base is provided with the inlet channel connected with air inlet and the outlet passageway connected with venthole.
5. a photoionization detector, it is characterised in that: include photoionization detection sensor, incubation chamber and the PCB described in claim 4；It is provided with venting channels in described PCB, described photoionization detection sensor is twisted and is located in described PCB, described inlet channel connects with described venting channels, and described photoionization detection sensor wrap is located in described incubation chamber, and described incubation chamber is arranged in described PCB.
Photoionization detector the most according to claim 5, it is characterised in that: it is provided with heating rod and temperature sensor in described incubation chamber.
Photoionization detector the most according to claim 6, it is characterised in that: described temperature sensor is PT100 temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521122451.9U CN205484193U (en) | 2015-12-31 | 2015-12-31 | Photo -ionization detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521122451.9U CN205484193U (en) | 2015-12-31 | 2015-12-31 | Photo -ionization detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205484193U true CN205484193U (en) | 2016-08-17 |
Family
ID=56662004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521122451.9U Active CN205484193U (en) | 2015-12-31 | 2015-12-31 | Photo -ionization detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205484193U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105022079A (en) * | 2015-07-03 | 2015-11-04 | 中国计量科学研究院 | Ionization chamber system |
| CN108802166A (en) * | 2018-05-24 | 2018-11-13 | 深圳市科尔诺电子科技有限公司 | A kind of PID detection devices of VOC gas |
| WO2021157838A1 (en) * | 2020-02-05 | 2021-08-12 | 주식회사 태성환경연구소 | Voc detection pid gas sensor device |
-
2015
- 2015-12-31 CN CN201521122451.9U patent/CN205484193U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105022079A (en) * | 2015-07-03 | 2015-11-04 | 中国计量科学研究院 | Ionization chamber system |
| CN105022079B (en) * | 2015-07-03 | 2018-09-21 | 中国计量科学研究院 | Ionize chamber system |
| CN108802166A (en) * | 2018-05-24 | 2018-11-13 | 深圳市科尔诺电子科技有限公司 | A kind of PID detection devices of VOC gas |
| CN108802166B (en) * | 2018-05-24 | 2020-07-28 | 深圳市科尔诺电子科技有限公司 | Gaseous PID detection device of VOC |
| WO2021157838A1 (en) * | 2020-02-05 | 2021-08-12 | 주식회사 태성환경연구소 | Voc detection pid gas sensor device |
| KR20210099951A (en) * | 2020-02-05 | 2021-08-13 | 주식회사 태성환경연구소 | VOC Sensing PID Gas Sensor Device |
| KR102336622B1 (en) * | 2020-02-05 | 2021-12-09 | 주식회사 태성환경연구소 | VOC Sensing PID Gas Sensor Device |
| US11892430B2 (en) | 2020-02-05 | 2024-02-06 | Taesung Environmental Research Institute Co., Ltd. | VOC detection PID gas sensor device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205484193U (en) | Photo -ionization detector | |
| CN104569228B (en) | A kind of sampling device | |
| WO2016107486A1 (en) | Detection device and detection method | |
| CN105655225B (en) | A kind of film sampling device of mass spectrum fast enriching Thermal desorption and application | |
| GB2544613B (en) | Darkroom type security inspection apparatus and method | |
| CN202974961U (en) | Photoionization detector | |
| CN206420776U (en) | Gas concentration monitors sensing device | |
| CN201514403U (en) | Helium photoionization gas chromatography detector | |
| CN102661992B (en) | Ammonia gas concentration detection system and detection method thereof | |
| CN202748340U (en) | Mass spectrometer special for on-line detection of volatile organic compound | |
| CN209264371U (en) | Volatile organic matter enriching apparatus based on semiconductor chilling plate | |
| JP2010513899A (en) | Detection device and preconcentrator | |
| CN105719935A (en) | Ion migration tube adopting electro-spray ion source and application | |
| CN104716004B (en) | Non-contact thermal tubular film sampling device in a kind of mass spectrum ionization source | |
| CN112908829B (en) | Source-inner membrane sample injection radio frequency enhanced chemical ionization source | |
| CN108614029B (en) | High-sensitivity miniature photoionization sensor | |
| CN103512943A (en) | Special mass spectrometer for online detection of volatile organic compounds | |
| CN108693261A (en) | A kind of detection method and sampling apparatus of Indoor Air Benzene and total volatile organic compounds | |
| CN103811265A (en) | Doping agent auxiliary ionization source and application thereof in ion mobility spectrometry | |
| CN110648898B (en) | Mass spectrum device and method for detecting multi-component gas in freeze-drying process | |
| CN207472839U (en) | A kind of Thermal desorption module of double cold-traps | |
| CN204302250U (en) | A kind of sampling device | |
| CN103512944A (en) | Atomization and desolvation trapping sample introducing system and method | |
| CN103854954A (en) | Thermal desorption membrane inlet high field asymmetry waveform ion migration spectrometer | |
| CN112834603B (en) | Combined efficient thermal desorption device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 450001 Zhengzhou high tech Development Zone, Henan, Cedar Road, No. 169 Patentee after: Hanwei Technology Group Limited by Share Ltd Address before: 450001 Zhengzhou high tech Development Zone, Henan, Cedar Road, No. 169 Patentee before: Henan Hanwei Electronics Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |