What portable gas alarm devices are needed in mines?

We all know that life cannot do without air, and humans cannot do without oxygen. In a special space like a mine, not only can air and oxygen be indispensable, but there are also other dangerous situations that can occur. For example, oxygen enrichment in mines, oxygen deficiency in mines, and the presence of flammable and explosive toxic and harmful gases in mines are all severe challenges faced by every on-site worker entering the mine for work. Firstly, let's understand what gases are present in the mine that pose a hazard to on-site workers. Ground air is usually a mixture of gases with relatively stable chemical composition. But when the surface air enters the underground from the wellbore, it becomes mine air, and a series of changes will occur during this period. The main changes include a decrease in oxygen content, an increase in toxic and harmful gas content, an increase in dust concentration, and changes in physical states such as air temperature, humidity, and pressure.

Firstly, let's talk about oxygen. As we all know, human survival cannot do without oxygen. But when the oxygen in the mine is too active, there is a certain danger, mainly the risk of explosion. In addition to the danger of explosion, suffocation accidents can also occur when there is a lack of oxygen in the mine.

Next is nitrogen. The frequency of nitrogen occurrence in daily life is not high, so our understanding of nitrogen is not that much. There will be a large amount of nitrogen gas gushing out of the mine, and its main harm to the human body comes from the risk of suffocation. If the ventilation equipment in the mine malfunctions and there is a large amount of nitrogen gas gushing out of the goaf underground, then this situation is very dangerous.

There is another gas that is very dangerous, and this gas is carbon dioxide. Carbon dioxide is slightly toxic, and when the concentration of carbon dioxide in the underground air increases, on-site workers will experience suffocation and poisoning reactions. For example, those who experience shortness of breath, rapid heartbeat, headache, nausea, tinnitus, and severe breathing difficulties may experience breathing pauses, loss of consciousness, and a risk of death if they do not move to a well ventilated area for a long time. So when conducting mining operations, we must pay attention to detecting the composition and concentration of various gases in the mine.

Sampling analysis method is to use containers such as sampling bottles or suction balloons to extract underground air samples and send them to surface laboratories for analysis. But it requires a long time, complex operation, and high technical requirements. Generally used for component detection in underground fire areas or for precise determination of air components. Not universally applicable. So, with the following method of measurement, the rapid measurement method.

The fast color determination method is a real-time detection method that uses a portable gas alarm to detect the main gas components underground. The portable gas alarm can quickly and efficiently determine the main gas components underground, and the current concentration value will also be displayed in real time on the portable gas alarm display screen. It is also a commonly used measurement method nowadays.

CA-2100H core components adopt well-known brand sensors, which have excellent repeatability, fast response time and longer service life. It supports customized detection of multiple gases, including chlorine, hydrogen sulfide, carbon monoxide, oxygen, ammonia, etc. The equipment is equipped with high-capacity rechargeable lithium batteries to ensure long-term operation and meet work requirements.