Professional Gas Monitoring Equipment

In today's world, environmental monitoring is the foundation and technical support for environmental management. With the development of my country's environmental protection work, my country's environmental monitoring technology has also made great progress, and the production of environmental monitoring instruments has formed a certain scale. The four-in-one gas detector is a single gas or multiple gas detectors that can be flexibly configured. It can be equipped with an oxygen sensor, a combustible gas sensor, and optionally two toxic gas sensors or optionally four toxic gas sensors or any Choose a single gas sensor.








We know that the conventional four-in-one gas detector can detect four gases: oxygen, combustible gas, hydrogen sulfide, and carbon monoxide. Of course, we can also customize it according to the gas we need to detect. The four-in-one gas detector has a very clear large liquid crystal display screen, with sound and light alarm prompts, to ensure that dangerous gases can be detected in a very unfavorable working environment and promptly prompt the operator to prevent.







The general detection parameters and range of the four-in-one gas detector are as follows:

Can detect 1～4 kinds of gas at the same time, the unit can be switched freely

Units are optional: PPM, mg/m3, Vol%, LEL%, PPHM, ppb, mg/L.

★ Rich man-machine interface

2.31-inch high-definition color screen, displaying real-time concentration, alarm, time, temperature, humidity, storage and other information; the menu interface uses high-definition simulation graphics to display the function name of each menu.

★ Large-capacity data storage function (capacity can be customized), supports multiple storage methods, optional RS485 communication

Why do hydrogen energy accidents happen?

As we all know, hydrogen is a clean energy source, like traditional energy sources such as natural gas, liquefied petroleum gas, and gasoline, it not only has high energy but also has a particular risk of deflagration, which is a flammable gas with fire hazard class A (the explosion limit of hydrogen (LEL%) is 4%VOL-75%VOL). In addition, hydrogen gas also has its own unique characteristics: first, colorless, tasteless, and odorless, the human body can not sense its leakage; second, the existence of "hydrogen corrosion" phenomenon, easy to embrittle the metal and leakage; third, low ignition energy, combustion, and explosion range is wide; fourth, low density, fast diffusion, the diffusion rate is 3.8 times and 12 times that of natural gas and gasoline, respectively The diffusion rate is 3.8 times and 12 times faster than that of natural gas and petrol respectively.

Once hydrogen is ignited, it burns fast, and once it leaks in the process of manufacture, storage, and handling, it can be mixed with air to form an explosive mixture, which will explode when it meets heat or open flame.








How to prevent hydrogen explosion?



1、Ensure the purity of hydrogen in operation. Ensure the purity of the supplied hydrogen is above 99%, once the purity is found to drop, find the cause and eliminate it immediately.

2、In the replacement operation of hydrogen charging and discharging, strictly abide by the rules and regulations and do not simplify the operation.

3. Operate strictly according to the regulations. Comply with the station operation regulations and safety operation regulations, the Safety Technical Regulations for Hydrogen Use (GB4962-2008), the Electrical Industry Safe Work Regulations (Thermal and Mechanical Parts), the Typical Fire Fighting Regulations for Electric Power Equipment (DL5027-2015), and the strict work system and operating system.

4、Strengthen the tour inspection of the hydrogen system, and find and deal with hidden dangers in time.

5、Strengthen the sampling and laboratory work of the hydrogen system and strengthen the monitoring and supervision of each system parameter.







The German UST Hydrogen Power hydrogen detector has been put into use in many hydrogen refueling stations in China. It has a rapid detection response (<1 second), can effectively warn the danger of various types of gas leaks and protect the personal safety of operators, can operate continuously for up to 10 hours, and is suitable for hydrogen preparation, transportation, hydrogen refueling, hydrogen energy vehicles, and other links.

Nowadays, mushrooms are gradually becoming a concern for health-conscious people, and more and more people are joining the ranks of growing mushrooms, and there are more and more mushroom greenhouses everywhere.



Mushrooms cannot photosynthesize and only consume oxygen, so they are most abundant in forested deciduous areas. The type and quantity of mushrooms are also inextricably linked to the oxygen content of the area.



(Edible mushroom) mushroom consumes a lot of oxygen and metabolizes carbon dioxide in the process of growth. High carbon dioxide in mushroom sheds is caused by the accumulation of carbon dioxide produced during the growth of mushrooms due to poor ventilation, while high carbon dioxide will inhibit the growth of mushrooms and seriously lead to carbon dioxide poisoning, the manifestation symptoms of which are premature aging of plants, formation of cauliflower-like, and blue foliage. Therefore, monitoring CO2 is one of the indispensable steps in the mushroom growing industry.

The picture thus shows that carbon dioxide detection is necessary to grow mushrooms and improve production.



Manually ventilating the mushroom shed is troublesome and not rigorous. If the number of times of aeration is too many, the temperature and humidity in the mushroom shed will change drastically and affect the mushroom yield; if the number of times of aeration is too few, the lack of oxygen in the shed will also affect the yield and even suffocate the people who enter the shed. Therefore, it is necessary to detect the concentration of carbon dioxide and reasonably control the intensity and number of aeration in order to achieve the maximum yield of mushrooms.



A mushroom shed in Yunnan adopts the solution of our gas detector with controller to monitor the concentration of carbon dioxide and temperature and humidity in real time at different points of the shed and feed the data to the controller, so the field operator can know whether the concentration of carbon dioxide is up to the standard through the central control room and can intervene manually when the concentration exceeds the standard.



The gas detector used is MIC600 fixed gas detector, which can detect carbon dioxide, temperature, relative humidity, HCHO, TVOC, etc. The detector housing has IP66 protection level, which is moisture-proof and dust-proof, suitable for mushroom sheds and other high humidity environments. On-site continuous 24-hour online monitoring of multiple gas concentrations and measurement of temperature and humidity, on-site concentration display, remote signal transmission.

July 28-30, 2022, the annual world oil and gas conference - the twenty-second China International Petroleum and Petrochemical Technology and Equipment Exhibition (cippe2022 Zhenwei International Petroleum Exhibition) will be held in Shenzhen Convention and Exhibition Center (Futian). Focusing on the high-quality development of the oil and gas industry, the exhibition will bring together more than 1,000 enterprises from all over the world to showcase cutting-edge innovations and applications in the upstream and downstream of the whole industry chain with 8 thematic zones and 14 industrial sectors, and help the oil and gas industry achieve the goal of "carbon peak and carbon neutral".





　























































































　









As a professional gas detection and monitoring solution provider and the guardian of enterprise safety production, Zetron Tech was invited to participate in this year's oil and gas industry conference.

















































































































　















At this year's exhibition,  Zetron Tech will bring its wireless interconnection restricted space monitoring gas early warning system technology solution and wireless interconnection area monitoring gas early warning system technology solution to the exhibition, and establish a direct communication bridge with industry, media friends and fan users, bringing comprehensive and professional product explanation and consulting services.





　





















































































































Among them,  Zetron Tech's wireless interconnection restricted space monitoring gas early warning system technology solution provides online detection of hazardous, flammable and explosive gases for tank cleaning process, which can monitor the concentration of flammable gases, oxygen and toxic and hazardous gases in real time. And wireless interconnection restricted space monitoring gas early warning system technology program for the tunnel, culvert, storage room and other restricted space operations to provide online detection of toxic and hazardous, flammable and explosive gases.



































































































































　　In recent years, China has experienced more poisoning, asphyxiation, combustion, explosion, collapse, electrocution and drowning accidents during confined space operations. The State Ministry of Emergency Response attaches great importance to safety production, and now they are all comprehensively regulating production and improving the supervision of high-risk operations, including tank clearing and confined space operations, to reduce safety accidents. Zetron Techwireless interconnection restricted space monitoring gas early warning system technology solution, line interconnection restricted space monitoring gas early warning system technology solution, set up the camera in the restricted space, workers wear a Zetron Tech portable detector for operation, detect the gas concentration condition of the environment at any time, the outside guardian can view the monitoring data and video images through cell phones or ipads, to achieve remote high-risk Operation integration supervision, completely solve the industry pain points.

Project  background



Nitrogen oxides mainly include N2O, NO, NO2, N2O3, N2O4, N2O5 and so on. Among them, the nitrogen oxides formed during the combustion process are almost all N0 and NO2, and these two nitrogen oxides are usually called NOX. At present, among the nitrogen oxides produced by natural mineral dyes such as coal, natural gas and heavy oil, NO accounts for about 90%, and the rest is NO2.



The harm of nitrogen oxides is huge: (1) Endanger the health of people. (2) Harm the growth of forests and crops. (3) Significant impact on global climate change and severe damage to the high-altitude ozone layer.



Known from the formation principle of flue gas pollution components, oxygen is its key component. In the actual production process, when the boiler is burned with fuel, excess air is generally added. On the one hand, the fuel can be fully burned, but another problem also arises. The concentration of pollutants discharged from the exhaust pipe produces "dilution", which greatly Reducing the emission concentration will cause the pollutant emission concentration to reach the “false” standard. Excessive air causes the furnace temperature to drop, which not only affects the combustion, but also takes away a lot of heat and dust, increasing the calculation result of the pollution emission concentration. At the same time, the large air volume also increases the power consumption of smoke exhaust. Controlling the oxygen content of flue gas is very important for controlling the combustion process and achieving safe, efficient and low-pollution emissions.



The emission concentration of sulfur dioxide and nitrogen oxides in the flue gas should be converted according to the specified excess air coefficient, and the size of the conversion value depends on the measured value of the flue gas oxygen content. Therefore, the oxygen content in the flue gas is controlled during operation. Controlling the final emission concentration of pollutants is crucial. A flue gas analyzer is usually used to monitor the oxygen content in the flue gas. The core technology for detecting gas is a gas sensor. At present, electrochemical sensors are widely used.



Design monitoring items: detection of NOX, O2, optional monitoring of SO2, CO, CO2, etc.









Scheme details



First of all, through front-end dust filtration, cooling, water vapor separation through the pretreatment system condenser, and measuring the content of NO, NO2, O2 with a composite gas detector; then according to the provisions of GB5468 or GB/T16157, the atmospheric pollutant reference content Oxygen emission concentration conversion method, conversion of nitrogen oxide emission concentration. The measured gas concentration is displayed on the display screen in real time, and the data signal is transmitted to the terminal such as PLC or computer. It can also be transmitted to the cloud server through wireless GPRS or network, or connected to the environmental protection bureau through the data acquisition instrument for real-time supervision.