CN204241492U - Alcohol content of exhalation gas detector calibrating installation - Google Patents
Alcohol content of exhalation gas detector calibrating installation Download PDFInfo
- Publication number
- CN204241492U CN204241492U CN201420601112.8U CN201420601112U CN204241492U CN 204241492 U CN204241492 U CN 204241492U CN 201420601112 U CN201420601112 U CN 201420601112U CN 204241492 U CN204241492 U CN 204241492U
- Authority
- CN
- China
- Prior art keywords
- gas
- alcohol
- alcohol content
- alcohol solution
- gas detector
- 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.)
- Expired - Fee Related
Links
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 106
- 238000009434 installation Methods 0.000 title claims 9
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 230000001476 alcoholic effect Effects 0.000 claims 5
- 238000012795 verification Methods 0.000 abstract description 15
- 206010006326 Breath odour Diseases 0.000 abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 239000012153 distilled water Substances 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 6
- 125000003158 alcohol group Chemical group 0.000 abstract 1
- 238000004164 analytical calibration Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
本实用新型涉及一种呼出气体酒精含量探测器用检定装置，包括气源、气体发生系统及呼出气体酒精含量探测器，气体发生系统包括密封容器、加热装置及酒精溶液，密封容器内设置有酒精溶液，进气管的出气端设置在酒精溶液液面之下，气体发生系统通过出气管与呼出气体酒精含量探测器连接，出气管的进气端设置在酒精溶液液面之上，密封容器内设置有加热装置。它是用一定量乙醇纯度标准物质和蒸馏水配制酒精溶液，并在密封容器内加热至34℃。酒精水溶液与酒精气体的两相平衡，产生的酒精气体与酒精溶液达到气液平衡，向酒精溶液中不断鼓入洁净空气，将酒精气体通入呼出气体酒精含量探测器，进行呼出气体酒精含量探测器的校准、检定工作。
The utility model relates to a verification device for an exhaled gas alcohol content detector, which includes a gas source, a gas generating system and an exhaled gas alcohol content detector. The gas generating system includes a sealed container, a heating device and an alcohol solution, and an alcohol solution is arranged in the sealed container , the outlet end of the air intake pipe is set below the liquid level of the alcohol solution, the gas generating system is connected to the breath alcohol content detector through the air outlet pipe, the air inlet end of the air outlet pipe is set above the liquid level of the alcohol solution, and the airtight container is provided with heating equipment. It is an alcohol solution prepared with a certain amount of ethanol purity standard substance and distilled water, and heated to 34°C in a sealed container. The two-phase equilibrium between the alcohol solution and the alcohol gas, the resulting alcohol gas and the alcohol solution reach a gas-liquid equilibrium, continuously blow clean air into the alcohol solution, pass the alcohol gas into the breath alcohol content detector, and detect the breath alcohol content Instrument calibration and verification work.
Description
技术领域：Technical field:
本实用新型属于呼出气体酒精含量探测器的检测验收技术领域，具体涉及一种对呼出气体酒精含量探测器进行检定用的检定装置。 The utility model belongs to the technical field of detection and acceptance of an exhaled gas alcohol content detector, in particular to a verification device for verifying an exhaled gas alcohol content detector.
背景技术：Background technique:
呼出气体酒精含量探测器，是用于检测人体呼出气体中的酒精含量。探测器由气路、电子线路、传感器及显示器等部件组成，其工作原理是乙醇气体通过传感器，转化为电流或电压信号，再通过电路模数转换，在仪器上显示出气体中的酒精浓度值。 The breath alcohol content detector is used to detect the alcohol content in the breath of the human body. The detector is composed of gas circuit, electronic circuit, sensor, display and other components. Its working principle is that ethanol gas passes through the sensor and is converted into a current or voltage signal, and then through the analog-to-digital conversion of the circuit, the alcohol concentration value in the gas is displayed on the instrument. .
为保证呼出气体酒精含量探测器在使用过程中的测量值的准确与统一，国家技术监督局颁布了JJG657-2006《呼出气体酒精含量探测器检定规程》，该规程适用于呼出气体酒精含量探测器的首次检定、后续检定及使用中的检验，但是，目前，市场上还没有完全符合《呼出气体酒精含量探测器检定规程》要求的检定设备有以下三种： In order to ensure the accuracy and uniformity of the measured value of the exhaled alcohol content detector during use, the State Bureau of Technical Supervision promulgated JJG657-2006 "Verification Regulations for Exhaled Alcohol Content Detectors", which is applicable to exhaled alcohol content detectors However, at present, there are three types of verification equipment that do not fully meet the requirements of the "Exhaled Breath Alcohol Content Detector Verification Regulations" in the market:
第一种为液态有机气体配气装置：是一种用质量流量动静相结合的方法配制标准酒精气体的装置，其原理是向定量的气流中注入一定体积的纯酒精液体，并使液态充分汽化，与稀释气体均匀混合后，充入气袋。存在问题：配气过程影响因素多，工作效率低；气体状态为干气，与呼出气体酒精含量探测器的实际使用状态差异较大。 The first is a gas distribution device for liquid organic gas: it is a device that uses a combination of mass flow, dynamic and static to prepare standard alcohol gas. Its principle is to inject a certain volume of pure alcohol liquid into a quantitative airflow, and make the liquid fully vaporized , after being evenly mixed with the diluent gas, it is filled into the air bag. Existing problems: There are many influencing factors in the gas distribution process, and the work efficiency is low; the gas state is dry gas, which is quite different from the actual use state of the breath alcohol content detector.
第二种是酒精呼气模拟器：应用格拉罕姆气体扩散定律配气，用气泵将室内空气吹入酒精模拟器里，产生标准气体输出。缺点：室内空气循环使用，仪器的气体压力、流量不易控制，输出标准气体量凭经验使用。 The second is the alcohol exhalation simulator: Graham's gas diffusion law is used to distribute the gas, and the air pump is used to blow the room air into the alcohol simulator to produce a standard gas output. Disadvantages: Indoor air circulation is used, the gas pressure and flow rate of the instrument are not easy to control, and the output standard gas volume is used based on experience.
第三种是瓶装空气中乙醇标准气体：不足之处，浓度固定，不能根据仪器量程改变标准值，有效期短，增加使用成本。 The third is ethanol standard gas in bottled air: the disadvantage is that the concentration is fixed, the standard value cannot be changed according to the instrument range, the validity period is short, and the use cost is increased.
实用新型内容：Utility model content:
综上所述，为了克服现有技术问题的不足，本实用新型提供了一种呼出气体酒精含量探测器用检定装置，它在标准大气压下，用一定量乙醇纯度标准物质和蒸馏水配制酒精溶液，并在密封容器内加热至34℃(人体呼出气体的温度)。密封容器中的水、汽处于饱和状态，产生的酒精气体及酒精容易达到气液平衡状态，然后通过向酒精溶液中不断鼓入洁净空气，从而将酒精气体通入呼出气体酒精含量探测器，进行呼出气体酒精含量探测器的校准、检定工作，完成JJG657-2006 规定的检定项目。 In summary, in order to overcome the deficiencies of the prior art problems, the utility model provides a test device for exhaled alcohol content detectors, which prepares an alcohol solution with a certain amount of ethanol purity standard substance and distilled water under standard atmospheric pressure, and Heat it to 34°C (the temperature of human exhaled air) in a sealed container. The water and vapor in the sealed container are in a saturated state, and the alcohol gas and alcohol produced can easily reach the gas-liquid equilibrium state, and then the alcohol gas is passed into the exhaled gas alcohol content detector by continuously blowing clean air into the alcohol solution to perform Calibration and verification of exhaled alcohol content detectors, complete the verification items specified in JJG657-2006.
为解决上述技术问题，本实用新型的技术方案是这样实现的： In order to solve the problems of the technologies described above, the technical solution of the utility model is achieved in this way:
一种呼出气体酒精含量探测器用检定装置，其中：包括气源、气体发生系统及呼出气体酒精含量探测器，所述的气源的出气口通过进气管与气体发生系统连通，所述的气体发生系统通过出气管与呼出气体酒精含量探测器连接，所述的气体发生系统包括密封容器、加热装置及酒精溶液，密封容器内设置有酒精溶液，进气管的出气端设置在酒精溶液液面之下，所述的气体发生系统通过出气管与呼出气体酒精含量探测器连接，所述的出气管的进气端设置在酒精溶液液面之上，所述的密封容器内设置有加热装置，加热装置加热酒精溶液。 A verification device for an exhaled gas alcohol content detector, which includes a gas source, a gas generating system and an exhaled gas alcohol content detector, the gas outlet of the gas source communicates with the gas generating system through an intake pipe, and the gas generating system The system is connected to the exhaled gas alcohol content detector through the outlet pipe. The gas generating system includes a sealed container, a heating device and an alcohol solution. The alcohol solution is arranged in the sealed container, and the outlet end of the air inlet pipe is arranged below the liquid level of the alcohol solution. , the gas generating system is connected to the exhaled gas alcohol content detector through the outlet pipe, the inlet end of the outlet pipe is arranged above the liquid level of the alcohol solution, and a heating device is arranged in the sealed container, and the heating device Heat the alcohol solution.
进一步，所述的酒精溶液为乙醇纯度标准物质和蒸馏水配置而成。 Further, the alcohol solution is prepared from ethanol purity standard substance and distilled water.
进一步，所述的气源为瓶装洁净空气。 Further, the air source is bottled clean air.
进一步，所述的进气管及出气管均为聚四氟乙烯管。 Further, the air inlet pipe and the air outlet pipe are polytetrafluoroethylene pipes.
进一步，所述的从气源到密封容器之间的进气管上依次设置有流量控制器及压力控制器。 Further, a flow controller and a pressure controller are sequentially arranged on the inlet pipe from the gas source to the sealed container.
进一步，所述的出气管上设置有过滤器。 Further, a filter is provided on the outlet pipe.
进一步，所述的密封容器内设置有搅拌器。 Further, a stirrer is arranged in the sealed container.
进一步，所述的密封容器上设置有温度控制器。 Further, the sealed container is provided with a temperature controller.
进一步，所述的密封容器上设置有气路定时器。 Further, the air circuit timer is set on the airtight container.
进一步，所述的密封容器内设置有温度传感器，温度传感器设置在酒精溶液液面之下，温度传感器与温度控制器通过数据线连接。 Further, a temperature sensor is arranged in the sealed container, the temperature sensor is arranged below the liquid level of the alcohol solution, and the temperature sensor is connected to the temperature controller through a data line.
进一步，所述的进气管的出气端设置有发泡管。 Further, the air outlet end of the air inlet pipe is provided with a foam pipe.
本实用新型的有益效果为： The beneficial effects of the utility model are:
1、本实用新型在标准大气压下，用一定量乙醇纯度标准物质和蒸馏水配制酒精溶液，并在密封容器内加热至34℃(人体呼出气体的温度)。酒精水溶液与酒精气体的两相平衡，密封容器中的水、汽处于饱和状态，产生的酒精气体与酒精溶液达到平衡，然后通过向酒精溶液中不断鼓入洁净空气，从而将酒精气体通入呼出气体酒精含量探测器，进行呼出气体酒精含量探测器的校准、检定工作，完成JJG657-2006 规定的检定项目。 1, the utility model is under standard atmospheric pressure, prepares alcohol solution with a certain amount of ethanol purity standard substance and distilled water, and is heated to 34 ℃ (the temperature of human body exhaled gas) in sealed container. The two-phase equilibrium of the alcohol solution and the alcohol gas, the water and vapor in the sealed container are in a saturated state, the alcohol gas and the alcohol solution are in equilibrium, and then the alcohol gas is breathed in and out by continuously blowing clean air into the alcohol solution Gas alcohol content detector, carry out the calibration and verification of breath alcohol content detector, and complete the verification items stipulated in JJG657-2006.
2、本实用新型的气源采用瓶装洁净空气，摒弃惯常使用气泵进气方式，有效避免了已释放到空气中的酒精气体对对检定结果的干扰；本实用新型的酒精溶液采用乙醇纯度标准物质和蒸馏水配置而成，能够确保产生的酒精气体准确性和可靠性。 2. The gas source of the utility model adopts bottled clean air, abandons the conventional air pump intake mode, and effectively avoids the interference of the alcohol gas released into the air on the test results; the alcohol solution of the utility model adopts ethanol purity standard substance It is configured with distilled water to ensure the accuracy and reliability of the alcohol gas produced.
3、本实用新型的密封容器上设置有气路定时器，总所周知，一定体积、浓度的酒精水溶液在气液平衡状态下产生同种浓度的气体，在一定时间内浓度保持恒定，可用来连续检定、校准仪器，但是超出时间限度，原来的平衡状态将无法持续，气体浓度会逐渐降低，所以必须对酒精气体输出时间进行控制。气路定时器能够满足不同仪器生产厂家关于采集时间设定的要求，检定过程中保证酒精气体通入仪器的时间恒定；能够根据被检呼出气体酒精含量探测器采集时间设定酒精气体输出时间，避免浪费酒精气体，能够根据不同浓度、体积的酒精溶液，规定酒精气体发生时间，累计计数，达到规定时间后控制系统将自动停止输出气体。 3. The airtight container of the present utility model is provided with a gas path timer. As we all know, a certain volume and concentration of an alcohol solution produces the same concentration of gas in a state of gas-liquid equilibrium, and the concentration remains constant within a certain period of time, which can be used to Continuously verify and calibrate the instrument, but if the time limit is exceeded, the original equilibrium state will not be sustained, and the gas concentration will gradually decrease, so the alcohol gas output time must be controlled. The gas circuit timer can meet the requirements of different instrument manufacturers on the setting of collection time, and ensure that the time for alcohol gas to pass into the instrument is constant during the verification process; it can set the output time of alcohol gas according to the collection time of the detected breath alcohol content detector, To avoid wasting alcohol gas, according to alcohol solutions of different concentrations and volumes, the generation time of alcohol gas can be specified, and the cumulative count can be counted. After the specified time is reached, the control system will automatically stop outputting gas.
4、本实用新型的密封容器内设置有加热装置及温度控制器，加热装置及温度控制器，对密封容器内的酒精溶液加热至34℃，并保持该温度，34℃为人体呼出气体的温度，本实用新型的进气管上设置流量控制器及压力控制器，对进入密封容器的洁净空气的压力及流量进行精确控制，尽可能的模拟人体呼出气体的压力、流量、温度及湿度，保证检定的准确性及可靠性。 4. A heating device and a temperature controller are installed in the sealed container of the present invention. The heating device and the temperature controller heat the alcohol solution in the sealed container to 34°C and maintain the temperature. 34°C is the temperature of the exhaled gas of the human body , the air inlet pipe of the utility model is provided with a flow controller and a pressure controller to precisely control the pressure and flow of the clean air entering the sealed container, and simulate the pressure, flow, temperature and humidity of the exhaled gas of the human body as much as possible to ensure the verification accuracy and reliability.
5、本实用新型的出气管上设置有过滤器，过滤器能够过滤掉酒精气体中的水汽及杂质，保证检定用酒精气体的纯度。 5. The air outlet pipe of the utility model is provided with a filter, which can filter out water vapor and impurities in the alcohol gas to ensure the purity of the alcohol gas used for verification.
6、本实用新型的进气管及出气管均采用聚四氟乙烯管，聚四氟乙烯管对酒精短期无吸附作用，从而减少酒精气体在流动过程中的损耗。 6. Both the inlet pipe and the outlet pipe of the utility model adopt polytetrafluoroethylene pipes, which have no short-term adsorption effect on alcohol, thereby reducing the loss of alcohol gas in the flow process.
附图说明：Description of drawings:
图1为本实用新型的结构示意图。 Fig. 1 is the structural representation of the utility model.
具体实施方式 Detailed ways
下面结合附图对本实用新型作进一步的详细说明。 Below in conjunction with accompanying drawing, the utility model is described in further detail.
如图1所示，一种呼出气体酒精含量探测器用检定装置，包括气源1，所述的气源1采用瓶装洁净空气，气源1的出气口通过进气管2与气体发生系统连通，所述的气体发生系统通过出气管3与呼出气体酒精含量探测器4连接，出气管3上设置有过滤器10，所述的气体发生系统包括密封容器5、加热装置6及酒精溶液7，密封容器5内设置有酒精溶液7，进气管2的出气端设置在酒精溶液7液面之下，酒精溶液7为乙醇纯度标准物质和蒸馏水配置而成；所述的气体发生系统通过出气管3与呼出气体酒精含量探测器4连接，所述的出气管3的进气端设置在酒精溶液7液面之上，所述的密封容器5内设置有加热装置6，加热装置6加热酒精溶液7。从气源1到密封容器5之间的进气管2上依次设置有流量控制器8及压力控制器9，所述的进气管2及出气管3均为聚四氟乙烯管。密封容器5内设置有搅拌器11。所述的密封容器5上设置有温度控制器12。所述的密封容器5上设置有气路定时器13。述的密封容器5内设置有温度传感器14，温度传感器14设置在酒精溶液7液面之下，温度传感器14与温度控制器12通过数据线连接。所述的进气管2的出气端设置有发泡管15。 As shown in Figure 1, a kind of testing device for breath alcohol content detector comprises gas source 1, described gas source 1 adopts bottled clean air, and the gas outlet of gas source 1 communicates with gas generating system through intake pipe 2, so The gas generating system described above is connected with the exhaled gas alcohol content detector 4 through the outlet pipe 3, and the outlet pipe 3 is provided with a filter 10. The gas generating system includes a sealed container 5, a heating device 6 and an alcohol solution 7, and the sealed container Alcohol solution 7 is arranged in 5, and the gas outlet end of air inlet pipe 2 is arranged under the liquid level of alcohol solution 7, and alcohol solution 7 is configured from ethanol purity standard substance and distilled water; The gas alcohol content detector 4 is connected, the inlet end of the gas outlet pipe 3 is arranged above the liquid level of the alcohol solution 7, and a heating device 6 is arranged in the described sealed container 5, and the heating device 6 heats the alcohol solution 7. A flow controller 8 and a pressure controller 9 are sequentially arranged on the inlet pipe 2 from the gas source 1 to the sealed container 5, and the inlet pipe 2 and the outlet pipe 3 are polytetrafluoroethylene pipes. A stirrer 11 is arranged in the airtight container 5 . The sealed container 5 is provided with a temperature controller 12 . The air circuit timer 13 is arranged on the sealed container 5 . The above airtight container 5 is provided with a temperature sensor 14, the temperature sensor 14 is arranged below the liquid level of the alcohol solution 7, and the temperature sensor 14 is connected with the temperature controller 12 through a data line. The air outlet end of the air inlet pipe 2 is provided with a foam pipe 15 .
当需要对呼出气体酒精含量探测器4进行检定时，将待检定的呼出气体酒精含量探测器4与出气管3连通，启动加热装置6及温度控制器12，将密封容器5内的酒精溶液7加热至34℃，使密封容器5内的酒精溶液7及酒精气体达到气液平衡状态，然后启动气源1向密封容器5内吹洁净空气，将标准酒精气体输出，通过出气管3及过滤器10通入呼出气体酒精含量探测器4，对呼出气体酒精含量探测器4进行检定。 When it is necessary to verify the breath alcohol content detector 4, the breath alcohol content detector 4 to be verified is communicated with the outlet pipe 3, the heating device 6 and the temperature controller 12 are started, and the alcohol solution 7 in the sealed container 5 is Heat to 34°C, make the alcohol solution 7 and alcohol gas in the sealed container 5 reach a gas-liquid equilibrium state, then start the air source 1 to blow clean air into the sealed container 5, output the standard alcohol gas, and pass through the outlet pipe 3 and the filter 10 pass into breath alcohol content detector 4, carry out verification to breath alcohol content detector 4.
要说明的是，以上所述实施例是对本实用新型技术方案的说明而非限制，所属技术领域普通技术人员的等同替换或者根据现有技术而做的其它修改，只要没超出本实用新型技术方案的思路和范围，均应包含在本实用新型所要求的权利范围之内。 It should be noted that the above-mentioned embodiments are illustrations and not limitations to the technical solution of the utility model, equivalent replacements by those of ordinary skill in the art or other modifications made according to the prior art, as long as they do not exceed the technical solution of the utility model The idea and scope of the invention should be included in the scope of rights required by the utility model.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420601112.8U CN204241492U (en) | 2014-10-17 | 2014-10-17 | Alcohol content of exhalation gas detector calibrating installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420601112.8U CN204241492U (en) | 2014-10-17 | 2014-10-17 | Alcohol content of exhalation gas detector calibrating installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204241492U true CN204241492U (en) | 2015-04-01 |
Family
ID=52770973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420601112.8U Expired - Fee Related CN204241492U (en) | 2014-10-17 | 2014-10-17 | Alcohol content of exhalation gas detector calibrating installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204241492U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104280558A (en) * | 2014-10-17 | 2015-01-14 | 河南省计量科学研究院 | Calibrating device for exhaled gas alcohol content detector |
| CN106526153A (en) * | 2015-12-15 | 2017-03-22 | 深圳安维森实业有限公司 | Alcohol gas concentration calibration device |
-
2014
- 2014-10-17 CN CN201420601112.8U patent/CN204241492U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104280558A (en) * | 2014-10-17 | 2015-01-14 | 河南省计量科学研究院 | Calibrating device for exhaled gas alcohol content detector |
| CN106526153A (en) * | 2015-12-15 | 2017-03-22 | 深圳安维森实业有限公司 | Alcohol gas concentration calibration device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104280558A (en) | Calibrating device for exhaled gas alcohol content detector | |
| CN105158788B (en) | The method of open loop type synchro measure Effective Decay Constant and precipitation rate of radon | |
| CN101644666B (en) | Experimental device and method for measuring formaldehyde adsorption performance of adsorbent | |
| CN101782655B (en) | Method and device for measuring radon exhalation rate in open loop way | |
| CN105784929B (en) | The system and its environmental chamber of building materials emission characteristics in a kind of measure indoor environment | |
| CN102169113A (en) | Verifying device and method for online sulfur hexafluoride hygrometer | |
| CN107486046B (en) | High-concentration organic matter standard mixed gas generating device and application method thereof | |
| CN103091121A (en) | Air purifier testing device and testing method thereof | |
| CN102294185A (en) | Gas preparation apparatus for preparing gas with imitative human exhaled air ratio and regulation of temperature/humidity, and method thereof | |
| CN105929443A (en) | Standard device and method for arbitrarily and actively adjusting radon exhalation rate and effective decay constant | |
| CN103028332A (en) | High-temperature standard humidity generation device | |
| CN103543121A (en) | Device and method for on-line calibration on high-temperature flue gas infrared spectrum measurement system | |
| CN204241492U (en) | Alcohol content of exhalation gas detector calibrating installation | |
| CN204064740U (en) | Pressure stability sampling apparatus | |
| CN101839813B (en) | Device for indirectly testing one-time purification efficiency of air purifying component and method thereof | |
| CN203858138U (en) | Rice field volatile ammonia collecting device with adjusting valve | |
| CN106023756A (en) | Apparatus simulating coughing of real human being | |
| CN111982784A (en) | A PM2.5 Cutter Characteristic Calibration Device | |
| CN103913404A (en) | Gas temperature control system of atmospheric aerosol volatilization characteristic measurer and application of system | |
| CN108310584A (en) | Breathe humidification instrument humidifying amount output measuring system and method | |
| CN204461840U (en) | A kind of PM2.5 source resolution sampling apparatus controlled based on gas concentration lwevel | |
| CN204439428U (en) | A kind of PM2.5 source resolution sampling apparatus based on multidiameter delay FEEDBACK CONTROL | |
| CN202942115U (en) | Gas recovery rate determination device for detecting open type animal respiratory calorimetric system | |
| CN205826543U (en) | A kind of equipment detecting formaldehyde | |
| CN203802467U (en) | Livestock respiratory metabolism measurement device |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 |