CN215375338U - Cross interference calibration test device for gas monitor - Google Patents
Cross interference calibration test device for gas monitor Download PDFInfo
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- CN215375338U CN215375338U CN202121842080.7U CN202121842080U CN215375338U CN 215375338 U CN215375338 U CN 215375338U CN 202121842080 U CN202121842080 U CN 202121842080U CN 215375338 U CN215375338 U CN 215375338U
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Abstract
The utility model discloses a cross interference calibration test device for a gas monitor, which comprises a cabinet body capable of moving on a supporting surface by means of travelling wheels, wherein a frame structure is formed at the upper part of the cabinet body, the frame structure is connected with a sealing material so as to form an environment test chamber at the upper part of the cabinet body, a gas mixing device is arranged in the environment test chamber, and a gas injection port and a gas sampling port are arranged on the bottom surface of the environment test chamber. The cross interference calibration test device for the gas monitor is simple in structure and convenient to use, and can provide calibration gas for experiments for the gas monitor.
Description
Technical Field
The utility model relates to the technical field of gas monitoring, in particular to a cross interference calibration test device for a gas monitor.
Background
Heretofore, no gas sensor has been specifically designed for a particular gas, i.e., any gas sensor has not been specifically designed for the detection of a specific gas, such as a gas sensor designated for the detection of carbon monoxide, and if a high concentration of hydrogen is present in the detection environment, the hydrogen may also react on the sensor to produce a signal that is higher than the actual carbon monoxide concentration, referred to as cross-interference of the sensor. The task of the manufacturer is to minimize this cross-interference by various physical or chemical methods, such as by minimizing the reaction of the non-test gases through the use of filter membranes and different circuit parameters.
On the other hand, cross interference can also provide certain convenience for instrument manufacturing under certain conditions, for example, a carbon monoxide detector can be used for detecting hydrogen, the premise is that only hydrogen exists in the environment but no carbon monoxide exists, meanwhile, the sensor needs to be calibrated by using hydrogen, a common carbon monoxide/hydrogen sulfide double sensor is manufactured by manufacturers by utilizing the characteristic of mutual cross interference of the carbon monoxide sensor and the hydrogen sulfide sensor, carbon monoxide and hydrogen sulfide can be detected simultaneously, and the purpose that one sensor detects two gases simultaneously is achieved.
Due to technical limitation, the gas sensor must be calibrated continuously to obtain a more accurate measurement result. The general technical requirement is that the instrument must be tested for function (pump test) before each use, the instrument can be used normally if the measurement result of the instrument is within the error range of the instrument, and the instrument must be recalibrated to use once the measurement result deviates from the normal error range.
Therefore, in the gas monitoring technology, in order to ensure the accuracy of the gas test, the gas monitoring box used in the test needs to periodically perform the coefficient calibration of gas cross interference so as to ensure the accuracy of the test instrument and the validity and stability of the use data in the ambient air situation. However, there is currently no convenient cross-talk calibration test device that can provide different gases at different concentrations for use.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems in the prior art, and provides a cross interference calibration test device for a gas monitor, which can correct cross coefficients and calibrate numerical values of a gas monitoring box, can be moved randomly and is convenient for testers to use.
The technical scheme adopted for realizing the purpose of the utility model is as follows:
the utility model provides a cross interference calibration test device for gas monitoring appearance, includes that one can carry out the cabinet body that moves on the holding surface with the help of the walking wheel, the upper portion of this cabinet body forms frame construction, thereby frame construction and sealing material are connected the upper portion of the cabinet body forms an environmental test cabin, be provided with the gas mixing device in the environmental test cabin, there are gas introduction port, gas sample connection on the bottom surface of environmental test cabin.
Preferably, the lower part of the cabinet body forms a storage space, the side panel of the storage space is provided with a side plate feed inlet and a side plate sampling port corresponding to the gas injection port and the gas sampling port, and the side plate feed inlet and the side plate sampling port are connected with the corresponding gas injection port and the gas sampling port through gas pipes
Preferably, the gas injection port and the gas sampling port are respectively provided in plurality.
Preferably, the gas mixing device is a mechanical fan.
The cross interference calibration test device for the gas monitor can provide various calibration gases with different concentrations, realizes cross interference test calibration on different gas monitoring analysis, has a simple structure, is convenient to use, and can provide calibration gas for cross interference test calibration experiments for the gas monitor.
Drawings
FIG. 1 is a schematic diagram of a cross-interference calibration test apparatus for a gas monitor according to the present invention;
FIG. 2 is a partial view of the apparatus of FIG. 1 showing a gas injection port and a gas sampling port.
Detailed Description
The utility model is described in further detail below with reference to the figures and specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Referring to fig. 1, a cross interference calibration test device for gas monitoring instrument, includes a cabinet body 12 capable of moving on a supporting surface by means of walking wheels, the upper portion of the cabinet body forms a frame structure, the frame structure is connected with a sealing material so that an environmental test chamber 1 is formed on the upper portion of the cabinet body, a gas mixing device 2 is arranged in the environmental test chamber, and a gas inlet 9 and a gas sampling port 10 are arranged on the bottom surface 11 of the environmental test chamber.
Illustratively, the cabinet may be formed by an aluminum alloy frame, and the enclosure may be formed by a plastic film, such as a teflon film, or a transparent flexible material or a non-flexible material, surrounding or attached to the upper portion of the frame and the top portion of the frame, and separated from the lower portion by a bottom plate, so as to form an enclosed environmental test chamber at the upper portion to meet the requirements of environmental tests. Through the action of gas mixing arrangement, make inside gas flow, make inside gas environment concentration change, concentration gas in can accurate simulation ambient air, measurable different concentration can be applied to multiple environment occasion, calibration gas monitor instrument that can be accurate.
During the use, through the gas of the corresponding concentration of gas introduction port input, by the gas mixing arrangement intensive mixing back, by gas sample connection is connected with the gas analysis appearance (not shown) that will test the calibration, and gas analysis appearance carries out the certain concentration gas that mixes in the sampling extraction environmental test cabin through gas sample connection, and the gas concentration of testing out is concentration value in the environmental test cabin promptly, and wherein, the experimental calibration of gas monitoring or test equipment's cross interference is prior art, and no longer redundance is said to its test calibration process.
Illustratively, the lower part of the cabinet body forms a storage space 8 and can be provided with a door to store a gas cross interference test device or used equipment, such as a gas monitor, a side plate feeding port 3 and a side plate sampling port 4 corresponding to the gas injection port 9 and the gas sampling port 10 are arranged on a side plate of the storage space, the side plate feeding port and the side plate sampling port are connected with the corresponding gas injection port and the gas sampling port through gas pipes (not shown), and the gas pipes (not shown) can be arranged inside the storage space 8.
Bottom plates and four enclosing plates can be arranged at the bottom and around the storage space 8 to form an independent space so as to store corresponding used gas monitoring equipment or gas circuit connecting pieces and the like.
The gas injection port and the gas sampling port can be respectively provided with a plurality of gas sampling ports in an exemplary manner so as to realize the introduction of gases with different concentrations or the connection of different gas monitor devices for cross interference calibration tests.
Illustratively, the gas inlet and the gas sampling port are formed by installing gas pipe joints or interfaces in corresponding ports, as shown in fig. 2.
For example, the gas mixing device 2 may employ a mechanical rotating fan, which may be one, two, or more, and the arrangement position may be a side or bottom, a top, or other selectable positions of the chamber that enable the sufficient gas to enter.
For example, a power distribution module or device 5, such as a power distribution strip, may be disposed at a corner of the bottom surface 11 and connected to a power source to provide a voltage for operation of the gas analyzer.
The working principle is as follows: the device is through gas introduction port, let in the gas that needs different concentration and different grade type in the environment experiment under-deck, there is mechanical type rotating fan to mix, the concentration of gas is confirmed according to national standard gas analysis appearance numerical value in the environment experiment under-deck, the national standard principle that gas analysis appearance all adopted is the spectrum method, there is not each gas in the sample gas to the influence of analysis appearance numerical value, consequently, as the basis of numerical value standard, gas analysis appearance all needs to be done the calibration to national detection every year, guarantee the use instrument accuracy.
The cross interference calibration test device for the gas monitor is simple in structure and convenient to use, and can provide calibration gas for experiments for the gas monitor.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. The utility model provides a cross interference calibration test device for gas monitoring appearance, its characterized in that includes one and can carry out the cabinet body that moves on the holding surface with the help of walking wheel, and the upper portion of this cabinet body forms frame construction, thereby frame construction and sealing material are connected the upper portion of the cabinet body forms an environmental test cabin, be provided with gas mixing device in the environmental test cabin, there are gas introduction port, gas sample connection on the bottom surface of environmental test cabin.
2. The cross-interference calibration test device for gas monitor according to claim 1, wherein a storage space is formed at the lower part of the cabinet body, a side plate feeding port and a side plate sampling port corresponding to the gas injection port and the gas sampling port are formed on a side plate of the storage space, and the side plate feeding port and the side plate sampling port are connected with the corresponding gas injection port and the gas sampling port through gas pipes.
3. The cross-interference calibration test device for gas monitor according to claim 1 or 2, wherein the gas injection port and the gas sampling port are respectively multiple.
4. The cross-interference calibration test set-up for a gas monitor of claim 3, wherein the gas mixing device is a mechanical fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121842080.7U CN215375338U (en) | 2021-08-06 | 2021-08-06 | Cross interference calibration test device for gas monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121842080.7U CN215375338U (en) | 2021-08-06 | 2021-08-06 | Cross interference calibration test device for gas monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215375338U true CN215375338U (en) | 2021-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121842080.7U Active CN215375338U (en) | 2021-08-06 | 2021-08-06 | Cross interference calibration test device for gas monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215375338U (en) |
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2021
- 2021-08-06 CN CN202121842080.7U patent/CN215375338U/en active Active
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