At present, the relevant departments in some urban areas stipulate that mining workers must be equipped with portable gas detection and alarm devices when they go down the mine. It is understood that the portable gas detection and alarm instrument can automatically measure the gas in the well, and when the harmful gas content exceeds the standard or the oxygen is insufficient, it will automatically alarm.
The composition of gases in mines represents a wide variety of hazardous conditions, including toxic gases such as carbon monoxide, carbon dioxide, sulfur dioxide, and oxygen deficiency. In some cases, methane may also reach explosive concentrations.
Gas detection alarm According to different site environments, the corresponding gas alarm should be selected. In confined places, such as sewers, agricultural closed granaries, railways, tank cars, tunnels and other workplaces, the detection must be carried out before personnel enter, and the detection must be carried out outside the confined space. At this time, it is necessary to choose an alarm with a built-in multi-gas detection function, because the gas distribution and gas types in different parts of the confined space are very different.
Therefore, a complete gas alarm in a confined space should be a non-contact, sub-site detection with multi-gas detection function to detect dangerous gases distributed in different spaces, and it should be a portable instrument that does not affect the work of workers. Only in this way can the absolute safety of the staff entering the confined space be guaranteed.