When treating urban domestic and production wastewater, sewage treatment plants produce some toxic gases, such as hydrogen sulfide (H2S), ammonia (NH3), methane (CH4), and carbon monoxide (CO). This system is used to monitor toxic gases and ensure personnel safety.

This solution is mainly aimed at online monitoring of VOCs in factory boundaries and emissions, with over limit alarms that can be uploaded to the environmental protection platform.

Use a portable PID photoionization detector to detect soil organic volatile compounds (VOCs). Insert a sampling probe into the sampled soil and aim it deep into the soil for analysis.

As the core equipment in the chemical industry, the precise detection of oxygen content inside the reactor is a key link to ensure safe production and improve process efficiency. This solution mainly solves the problem of detecting the oxygen concentration in this scenario.

The petrochemical industry, as a technology intensive field, has production facilities with characteristics such as high temperature and high pressure, flammability and explosiveness, and toxicity and harm. With the transformation of the industry towards intelligence and greenness, traditional monitoring methods can no longer meet the requirements of real-time, accuracy, and scalability. This solution, based on TCP/IP architecture and industrial Ethernet technology, has become the core support for building a gas monitoring system for the entire plant area due to its openness, compatibility, and high-speed transmission capability.

Aviation kerosene, as a flammable liquid, can easily form explosive mixtures when its volatile gas mixes with air, posing a risk of leakage during transportation, storage, and use. Once leaked, when the concentration of kerosene gas in the air reaches the explosive limit (0.6%~3.7% by volume), it may cause an explosion or fire when exposed to open flames, static electricity, or high temperatures. Therefore, implementing flammable and explosive gas monitoring in aviation coal oil tank areas is the core link to ensure safety.

Aviation kerosene, as a flammable liquid, can easily form explosive mixtures when its volatile gas mixes with air, posing a risk of leakage during transportation, storage, and use. Once leaked, when the concentration of kerosene gas in the air reaches the explosive limit (0.6%~3.7% by volume), it may cause an explosion or fire when exposed to open flames, static electricity, or high temperatures. Therefore, implementing flammable and explosive gas monitoring in aviation coal oil tank areas is the core link to ensure safety.

Farm biogas, as a renewable energy source, has significant value in resource utilization and environmental protection. However, fluctuations in methane concentration output and hydrogen sulfide concentration in biogas may lead to safety hazards or equipment corrosion, therefore a systematic concentration detection plan needs to be established. This plan combines domestic and international standards, technical means, and industry practices to propose a full process solution from testing equipment selection, deployment strategy to data management.

With the increasingly strict environmental regulations and the acceleration of industrialization, the application of oil and gas recovery systems in fields such as petroleum refining, gas stations, chemical plants, and natural gas processing is becoming more and more widespread. The core of the oil and gas recovery system is to effectively collect and process volatile organic compounds (VOCs) to reduce environmental pollution and resource waste. The gas concentration detection of the oil and gas recovery system is a key link to ensure its efficient operation and compliance. This plan aims to provide a comprehensive and efficient gas concentration detection solution to ensure the stable and safe operation of the oil and gas recovery system.

In the continuous excavation process of tunnel engineering, the complex geological structure and construction activities interact with each other, which can easily lead to a series of safety hazards, among which the production of toxic and harmful gases (such as carbon monoxide, hydrogen sulfide, radon gas, etc.) and flammable and explosive gases (such as methane, hydrogen, etc.) is particularly prominent. Once the concentration of these gases exceeds the standard, it will not only seriously threaten the life and health of on-site workers, leading to accidents such as poisoning and suffocation, but also may cause major safety accidents such as explosions and fires, bringing incalculable losses to the entire engineering project.