CN209167260U - Detection system used in gas detector - Google Patents
Detection system used in gas detector Download PDFInfo
- Publication number
- CN209167260U CN209167260U CN201821787631.2U CN201821787631U CN209167260U CN 209167260 U CN209167260 U CN 209167260U CN 201821787631 U CN201821787631 U CN 201821787631U CN 209167260 U CN209167260 U CN 209167260U
- Authority
- CN
- China
- Prior art keywords
- gas
- mass flow
- standard configuration
- sample test
- configuration sample
- 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
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to detection system used in a kind of gas detector, high concentrations of gas and air, which pass through to enter after first gas mass flow controller and second gas mass flow controller respectively, is sufficiently mixed area；The controller for being set with required gas concentration outputs a control signal to two gas mass flow controllers, two gas mass flow controller outputs adjust two kinds of gases and enter the gas volume ratio for being sufficiently mixed area, light concentration gas in area is sufficiently mixed to export, pass through the two-way pipeline being attached thereto, respectively enter gas analyzer and standard configuration sample test bottle, standard configuration sample test bottle and gas analyzer are in the same temperature and humidity case, gas analyzer show lower concentration gas concentration, standard configuration sample test bottle are used for detection gas detector precision.Low concentration distribution can be carried out while high/low temperature, damp heat test, for detecting to gas detector, cost is relatively low, control is simple, easy to maintain.
Description
Technical field
The utility model relates to a kind of gas technology of preparing, in particular to detection system used in a kind of gas detector.
Background technique
Environmental test in national standard in many gas detector examination criterias all includes that high and low temperature is tested, is constant wet
Heat test.Gas used in elementary error is tested when environmental test and is generally bottled calibrating gas, and tests domestic gas detection
Bottled standard gas distributing is difficult to reach test concentration when device, on the market some indoor formaldehyde gas detector accuracy grades
Not Shen Zhidadao 1ppm, and precision it is higher to test environmental requirement it is higher.
Currently on the market there are no can complete gas detector hot test, low-temperature test, steady-state damp heat test it is same
When dynamic air-distributing (low concentration) system, and in two kinds of modeling schemes of general extreme environment, using " being realized in cavity extremely low
Heat-insulated when warm environment " scheme, refrigeration can be difficult to realize；Explosion-proof cost mistake can be made using " placing cavity in extreme environment " scheme
It is high.
Utility model content
The utility model is aiming at the problem that being difficult to allot light concentration gas using bottled calibrating gas when environmental test, to mention
Go out detection system used in a kind of gas detector, realizes the low cost device that distribution and environmental test carry out simultaneously.
The technical solution of the utility model are as follows: detection system used in a kind of gas detector, including two gas mass flows
Amount controller, controller, gas mixing zone, temperature and humidity case, gas analyzer and standard configuration sample test bottle, high concentrations of gas and sky
Gas, which passes through to enter after first gas mass flow controller and second gas mass flow controller respectively, is sufficiently mixed area；Setting
There is the controller of required gas concentration to output a control signal to two gas mass flow controllers, two gas mass flow controls
Device output processed adjusts two kinds of gases and enters the gas volume ratio for being sufficiently mixed area, is sufficiently mixed light concentration gas in area and exports, leads to
The two-way pipeline being attached thereto is crossed, gas analyzer and standard configuration sample test bottle, standard configuration sample test bottle and gas are respectively enterd
Analyzer is in the same temperature and humidity case, gas analyzer show lower concentration gas concentration, and standard configuration sample test bottle is for examining
Survey gas detector precision.
Calibration mask is housed, gas detector is placed in calibration mask, is surveyed with standard configuration sample on the standard configuration sample test bottleneck
Gas comes into full contact in trial jar.
Selected gas analyzer precision is higher than under test gas detector precision.
The utility model has the beneficial effects that: detection system used in the utility model gas detector, can high/low temperature,
Low concentration distribution is carried out while damp heat test, for detecting to gas detector, cost is relatively low, control is simple, is easy to
Maintenance.
Detailed description of the invention
Fig. 1 is detection system structure used in the utility model gas detector.
Specific embodiment
Detection system structure used in gas detector as shown in Figure 1, including two gas mass flow controllers,
Controller, gas mixing zone, temperature and humidity case, gas analyzer and standard configuration sample test bottle, high concentration methane and air lead to respectively
It crosses gas mass flow controller 1 and gas mass flow controller 2 and controls to enter after two kinds of gas flows and be sufficiently mixed area.Two
A gas mass flow controller flow signal is provided by controller, and controller is wanted according to the gas of required proportion various concentration
It asks, output control signal controls two gas mass flow controllers, adjusts two kinds of gases and enters the gas body for being sufficiently mixed area
Product ratio is sufficiently mixed after area's gas stablizes mixing and exports, by the two-way pipeline being attached thereto, respectively enter gas analyzer and
Standard configuration sample test bottle, standard configuration sample test bottle and gas analyzer are in the same temperature and humidity case, and temperature and humidity conditions are identical,
The specific concentration of light concentration gas after mixing can be read from gas analyzer, gas analyzer precision is higher than probe to be measured.Inspection
Markers is surveyed with the marked gas and probe to be measured on sample test bottle mouth equipped with calibration mask, in calibration mask, under temperature and humidity conditions
It comes into full contact with, can be used for marked gas probe precision.Matching for various concentration can be realized by two gas mass flow controllers
Than each test environmental requirement can be achieved by the adjustment of temperature and humidity box temperature humidity.
Claims (3)
1. detection system used in a kind of gas detector, which is characterized in that including two gas mass flow controllers, control
Device, gas mixing zone, temperature and humidity case, gas analyzer and standard configuration sample test bottle, high concentrations of gas and air pass through respectively
Enter after one gas mass flow controller and second gas mass flow controller and is sufficiently mixed area；It is dense to be set with required gas
The controller of degree outputs a control signal to two gas mass flow controllers, and two gas mass flow controller outputs are adjusted
Two kinds of gases enter the gas volume ratio for being sufficiently mixed area, are sufficiently mixed light concentration gas in area and export, pass through what is be attached thereto
Two-way pipeline, respectively enters gas analyzer and standard configuration sample test bottle, and standard configuration sample test bottle and gas analyzer are in same
In one temperature and humidity case, gas analyzer show lower concentration gas concentration, standard configuration sample test bottle is used for detection gas detector
Precision.
2. detection system used in gas detector according to claim 1, which is characterized in that the standard configuration sample test bottleneck
Upper that calibration mask is housed, gas detector is placed in calibration mask, comes into full contact with gas in standard configuration sample test bottle.
3. detection system used in gas detector according to claim 1, which is characterized in that selected gas analyzer essence
Degree is higher than under test gas detector precision.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821787631.2U CN209167260U (en) | 2018-10-31 | 2018-10-31 | Detection system used in gas detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821787631.2U CN209167260U (en) | 2018-10-31 | 2018-10-31 | Detection system used in gas detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209167260U true CN209167260U (en) | 2019-07-26 |
Family
ID=67336030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821787631.2U Active CN209167260U (en) | 2018-10-31 | 2018-10-31 | Detection system used in gas detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209167260U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109508049A (en) * | 2018-10-31 | 2019-03-22 | 上海仪器仪表自控系统检验测试所有限公司 | The bottled calibrating gas preparation method that gas test uses |
-
2018
- 2018-10-31 CN CN201821787631.2U patent/CN209167260U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109508049A (en) * | 2018-10-31 | 2019-03-22 | 上海仪器仪表自控系统检验测试所有限公司 | The bottled calibrating gas preparation method that gas test uses |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105642140B (en) | A kind of dynamic gas mixer and air distributing method | |
| CN102778541B (en) | Device and method for calibrating gas sensor | |
| CN203422675U (en) | Dynamic trace gas concentration distributing apparatus | |
| CN101377469B (en) | Method and apparatus for real-time detecting mixing gas component content by thermal conductivity detector | |
| CN102586097B (en) | Device of continuously testing indoor soil microbial respiration | |
| CN103055732B (en) | Analog flue gas mixing device based on high temperature humidity generator | |
| CN101881761B (en) | Humidity adjustable high precision closed loop gas distribution system | |
| CN206235585U (en) | A kind of coal sample heating and oxidation test device | |
| CN102998720A (en) | Method and device for calibrating dynamic response characteristic of sonde humidity by double flow method | |
| CN202939322U (en) | Device for calibrating humidity dynamic response characteristics of sonde with double-flow method | |
| CN102707017A (en) | Test system for detecting integrity and reliability of gas monitoring system | |
| CN108918602A (en) | A kind of semiconductor gas sensor Performance Test System and test method | |
| CN109508049A (en) | The bottled calibrating gas preparation method that gas test uses | |
| CN206788121U (en) | A kind of online gas chromatographicanalyzer of methane and NMHC | |
| CN107677317A (en) | Flue dust gas sampling comprehensive detection system | |
| CN102735304A (en) | Device and method for detecting gas in liquid | |
| CN107583477A (en) | A kind of eight passage sulfur hexafluoride dynamic air-distributing method and system | |
| CN207717129U (en) | A kind of flue dust gas sampling comprehensive detection system | |
| CN209167260U (en) | Detection system used in gas detector | |
| CN103543121A (en) | Device and method for on-line calibration on high-temperature flue gas infrared spectrum measurement system | |
| Koller et al. | A null-point compensating system for simultaneous and continuous measurement of net photosynthesis and transpiration by controlled gas-stream analysis | |
| CN105911220B (en) | A kind of Propellant combustion gas composition test device | |
| CN103675247A (en) | Whole tissue culture seedling photosynthetic rate rapid determining device and method | |
| CN220214770U (en) | Closed circulation gas mixing measurement and control device | |
| CN208852714U (en) | A kind of low concentration calibrating gas continues generating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |