The TVOC gas system detects the concentration process of tvoc gas: after the sample gas is extracted through the airway, through fine dust removal filtration, constant pressure and constant flow regulation device, the total amount of VOCs (i.e., tvoc) is analyzed in the analysis unit. An ultraviolet (UV) light source is used to break organic matter into positive and negative ions (ionisation) that can be detected by the detector. The detector measures the ionized gas charge and converts it into an electrical signal, which is amplified and displayed by the concentration value of VOCs gas. After being detected at the detector electrode, gas ions quickly combine with electrons to form the original gas and vapor molecules. PID is a non-destructive detector, it does not "burn" or permanently change the gas to be measured, so that after the PID detection of the gas can still be collected for further measurement.

The carbon monoxide produced in underground garage is mainly from the engine of the car. When the engine is running at idle speed, the exhaust gas containing a large amount of CO will be produced due to insufficient combustion of gasoline. The underground parking lot is an airtight environment, where vehicles enter and exit frequently, and the exhaust gas emitted is not easy to be discharged. As a result, a lot of CO gas is easily accumulated, leading to a pungent smell in the parking lot, which will damage people's health. Therefore, underground garage, parking lot should be equipped with air supply and exhaust system, with fresh air replacement.

Downhole operation will produce a lot of poisonous gas and carbon dioxide, the carbon dioxide concentration is too high lead to people in severe hypoxia, lead to can't breathe doesn't work, put carbon dioxide monitor in underground work environment can at any time monitoring the concentration of carbon dioxide is within the scope of the works, as well as the monitoring of downhole temperature, thus avoiding some unexpected happens and do a good job related to the protection.

Therefore, before the crew enters the bottom cabin, the sea solid expert suggests that you should wear hydrogen sulfide detector, oxygen detector, LEL detector (LEL refers to the lower limit of combustible gas explosion). Container hold, hold thousands of containers commonly. These containers have to go through disinfection, cleaning, inspection and other maintenance work, regular oxygen and combustible gas detection, to ensure the personal safety of staff.

The point-type combustible gas detector in the paint shop can effectively detect the concentration of combustible gas and prevent the harm caused by excessive concentration of combustible gas leakage. ATO engineer according to many years of experience in installing, make a detailed point type spray paint room of the lacquer that bake workshop of combustible gas detector installation plan and detailed painting room of the lacquer that bake workshop point type combustible gas detector operating instructions, the user can according to the spray paint room of the lacquer that bake workshop point type combustible gas detector installation wiring diagram to operate within the specifications.

Under normal circumstances, after the installation and debugging of combustible gas detector device in the filling station is completed, no manual operation is required, only the intermittent inspection and maintenance of combustible gas alarm device is required. For combustible gas detector detection sensitivity of the control, suggested that six months or a year of combustible gas alarm device detector probe detection in part calibration process, increase the sensitivity of combustible gas detector probe, long-term implementation of combustible gas alarm device fast, precise and stable characteristics, extend the service life of LPG stations combustible gas alarm.

The cellar is used for fermentation and long - term storage during the brewing process. Because the brewery is relatively closed and the alcohol is flammable and volatile, the construction and design of the brewery require combustible gas detector in addition to good control of temperature and humidity. It is also necessary to ensure timely ventilation to avoid the formation of explosive mixtures due to the high concentration of volatile alcohol in the air.

Food and beverage places are crowded with people. In places where natural gas and liquefied petroleum gas are used in the business process, it is necessary to use gas safely. It is also stipulated that gas detector devices should be installed in the places to ensure the safety of the places. In places where combustible gas is used, combustible gas detection instruments and devices should be installed in places such as gas and pressure regulating chamber to ensure the safety of the area. In the catering industry, fixed combustible gas detector should be installed in the special bottle storage area for combustible gas. Meanwhile, ventilation and exhaust equipment and other linkage devices should be installed and used.

As a process equipment to generate heat and power, boiler room is widely used in electric power, machinery, chemical industry, textile and paper industry, hotels, residential heating and other aspects. In cities that need heating and heating, the number of boilers is larger, and gas detector needs to be installed to ensure the safety of use. Gas-fired boilers have gradually entered people's life. The fuel of gas boiler is combustible gas, mainly natural gas or gas. Natural gas and gas are mainly composed of methane and mixed with some simple alkanes. These components are highly flammable and explosive gases. The lower limit of explosion for natural gas is 4% and the lower limit of explosion for gas is 6.2%.

Actually in actual operation, paint booth still can detect whether the concentration of paint gas exceeds bid, paint concentration exceeds bid word to be able to endanger person health directly, belong to toxic gas, spray paint room also can detect alarm according to paint leakage concentration so, belong to poisonous gas alarm product. These two do not conflict, depending on whether the actual environment needs to install which product.

As a dangerous chemical, liquid chlorine should be strengthened in safety management, safety measures should be improved, chlorine gas detector should be applied in time, accident hidden dangers should be controlled, and a loss situation should be prevented.

The pharmaceutical plant usually chooses the oxygen and ozone gas detector. The oxygen gas detector can detect the purity; the ozone gas detector can measure the disinfection concentration and the residual ozone concentration after disinfection. Either the fixed gas detector or the portable gas detector can be adopted. The fixed one can be installed in the return air duct for detection or installed in the disinfection workshop.