CN202854034U - Anti-dewing diffuse sulfur hexafluoride gas sensor - Google Patents
Anti-dewing diffuse sulfur hexafluoride gas sensor Download PDFInfo
- Publication number
- CN202854034U CN202854034U CN 201220306775 CN201220306775U CN202854034U CN 202854034 U CN202854034 U CN 202854034U CN 201220306775 CN201220306775 CN 201220306775 CN 201220306775 U CN201220306775 U CN 201220306775U CN 202854034 U CN202854034 U CN 202854034U
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- CN
- China
- Prior art keywords
- sulfur hexafluoride
- hexafluoride gas
- gas sensor
- dewing
- infrared
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- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses an anti-dewing diffuse sulfur hexafluoride gas sensor which comprises a detection circuit, a shell and a diffusion port, wherein the diffusion port is formed in the shell, a mirror plane is arranged in the shell, an infrared emission end is connected with the output end of the detection circuit, an infrared receiving end is connected with the input end of the detection circuit, and the back face of the mirror plane is provided with a heating device. According to the utility model, through arranging the heating device on the back face of the existing diffuse sulfur hexafluoride gas sensor, the occurrence of a dewing phenomenon on the mirror plane is effectively avoided by using heat generated by the heating device, so that the reflection effect of the mirror plane is ensured, and the attenuation of signals received by the infrared receiving end is avoided, thereby ensuring the accuracy of measurement results; and the anti-dewing diffuse sulfur hexafluoride gas sensor is simple in structure and easy to implement.
Description
Technical field
The utility model relates to a kind of sulfur hexafluoride gas sensor, relates in particular to a kind of sulfur hexafluoride gas sensor of Anti-dew.
Background technology
At present, infrared absorption spectroscopy is commonly used a kind of in the gas detection method, but has the advantages such as measuring accuracy height, repeatability and good stability, long service life quantitative test, its measuring accuracy can reach 1,000,000/and, detection resolution reaches 10
-6Magnitude.But, micro-SF in the air
6The detection of gas is relatively more difficult, and we select to detect airborne sulfur hexafluoride gas content with the diffused sulfur hexafluoride gas sensor of infrared absorption spectroscopy.Owing to be subject to the restriction of request for utilization, for reduced volume, be provided with the minute surface for increasing light path in the existing diffused sulfur hexafluoride gas sensor, the infrared light that is sent by the infrared emitting end reflects at minute surface, is collected by reflection by the infrared receiver end again.
During detection, contain the cavity of air in diffusing opening enters diffused sulfur hexafluoride gas sensor of micro-sulfur hexafluoride gas.Diffused sulfur hexafluoride gas sensor internal is launched the infrared light of certain wavelength by the infrared emitting end, shines on the minute surface that diffused sulfur hexafluoride gas sensor internal arranges, and is collected by the infrared receiver end after reflection.Infrared light will be absorbed by the sulfur hexafluoride gas in the cavity in transmission course, according to the variation of this wavelength infrared light intensity and the relation of sulfur hexafluoride gas gas concentration, after Circuits System is processed after testing, just can obtain the concentration of sulfur hexafluoride gas.When but the diffused infrared sensor of sulfur hexafluoride gas detects in the environment moist, that humidity is higher or the temperature difference is large, can produce the dewfall phenomenon on the minute surface, the reflecting effect variation that causes minute surface causes weakening that the infrared receiver termination collects mail number, and affects the accuracy of measurement result.
The utility model content
The purpose of this utility model provides a kind of diffused sulfur hexafluoride gas sensor of Anti-dew, can avoid guaranteeing the accuracy of measurement result because producing weakening that dewfall causes that the infrared receiver termination collects mail number on the minute surface.
The utility model adopts following technical proposals:
A kind of diffused sulfur hexafluoride gas sensor of Anti-dew, comprise testing circuit, housing and be arranged on diffusing opening on the housing, also be provided with minute surface in the housing, the output terminal of infrared emitting end connection detection circuit, the input end of infrared receiver end connection detection circuit, the described minute surface back side arranges electro-heat equipment.
Described electro-heat equipment is power resistor, and power resistor connects power supply.
The infrared light wavelength of described enclosure interior infrared emitting end emission is 10.55 μ m.
The utility model is by arranging electro-heat equipment at the existing diffused sulfur hexafluoride gas sensor minute surface back side, the heat that utilizes electro-heat equipment to produce avoids producing on the minute surface phenomenon of dewfall, guarantee the reflecting effect of minute surface, that avoids that the infrared receiver termination collects mail number weakens, thereby guarantee the accuracy of measurement result, simple in structure, be easy to realize.
Description of drawings
Fig. 1 is schematic diagram of the present utility model.
Embodiment
As shown in Figure 1, the utility model comprises housing and the diffusing opening that is arranged on the housing, also is provided with minute surface in the housing, the output terminal of infrared emitting end connection detection circuit, the input end of infrared receiver end connection detection circuit, the minute surface back side is provided with electro-heat equipment.In the present embodiment, electro-heat equipment adopts power resistor, and power resistor connects power supply.During detection, the cavity of air in diffusing opening enters diffused sulfur hexafluoride gas sensor housing that contains micro-sulfur hexafluoride gas, the infrared emitting end emission wavelength of diffused sulfur hexafluoride gas sensor internal is the infrared light of 10.55 μ m, shine on the minute surface of diffused sulfur hexafluoride gas sensor internal setting, behind mirror-reflection, collected by the infrared receiver end, infrared light will be absorbed by the sulfur hexafluoride gas in the cavity in transmission course, according to the variation of this wavelength infrared light intensity and the relation of sulfur hexafluoride gas gas concentration, after the processing of circuit, just can obtain the concentration of sulfur hexafluoride gas after testing.Because the utility model is provided with power resistor behind minute surface, when the diffused infrared sensor of sulfur hexafluoride gas detects in the environment moist, that humidity is higher or the temperature difference is large, to produce certain heat during power resistor work, can effectively avoid producing on the minute surface phenomenon of dewfall, guarantee the reflecting effect of minute surface, that avoids that the infrared receiver termination collects mail number weakens, thereby guarantees the accuracy of measurement result.
Claims (3)
1. the diffused sulfur hexafluoride gas sensor of an Anti-dew, comprise testing circuit, housing and be arranged on diffusing opening on the housing, also be provided with minute surface in the housing, the output terminal of infrared emitting end connection detection circuit, the input end of infrared receiver end connection detection circuit is characterized in that: the described minute surface back side arranges electro-heat equipment.
2. the diffused sulfur hexafluoride gas sensor of Anti-dew according to claim 1, it is characterized in that: described electro-heat equipment is power resistor, power resistor connects power supply.
3. the diffused sulfur hexafluoride gas sensor of Anti-dew according to claim 2 is characterized in that: the infrared light wavelength of described enclosure interior infrared emitting end emission is 10.55 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220306775 CN202854034U (en) | 2012-06-28 | 2012-06-28 | Anti-dewing diffuse sulfur hexafluoride gas sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220306775 CN202854034U (en) | 2012-06-28 | 2012-06-28 | Anti-dewing diffuse sulfur hexafluoride gas sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202854034U true CN202854034U (en) | 2013-04-03 |
Family
ID=47985218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220306775 Expired - Fee Related CN202854034U (en) | 2012-06-28 | 2012-06-28 | Anti-dewing diffuse sulfur hexafluoride gas sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202854034U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067553A (en) * | 2015-08-14 | 2015-11-18 | 安徽蓝盾光电子股份有限公司 | Heat tracing tank based high-precision FTIR (Fourier transform infrared spectroscopy) online measurement system for flue gas |
| CN107367478A (en) * | 2017-07-19 | 2017-11-21 | 常州合众电气有限公司 | Non-dispersive infrared optical sulfur hexafluoride gas concentration sensor |
-
2012
- 2012-06-28 CN CN 201220306775 patent/CN202854034U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067553A (en) * | 2015-08-14 | 2015-11-18 | 安徽蓝盾光电子股份有限公司 | Heat tracing tank based high-precision FTIR (Fourier transform infrared spectroscopy) online measurement system for flue gas |
| CN107367478A (en) * | 2017-07-19 | 2017-11-21 | 常州合众电气有限公司 | Non-dispersive infrared optical sulfur hexafluoride gas concentration sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20190628 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |