Oxygen is an essential gas for human breathing, and proper oxygen concentration is a necessary condition to ensure human life, health and safety. In general, the oxygen concentration in the standard state is 20.9%VOL When the oxygen concentration in the air is less than 19.5%VOL, it is an anoxic environment. When the oxygen concentration in the air is greater than 23.5%VOL, it is an oxygen-rich environment. Both oxygen-deficient and oxygen-enriched environments are harmful to human health. The following are the effects of different concentrations of oxygen on human health:
In addition, workers should also detect the concentration of toxic and combustible gas in the closed space before entering the internal mold to dismantle such closed space to avoid danger. Taking ERUN-PG7 1S4 portable four-in-one gas detector as an example, it can not only detect the concentration of oxygen O2, but also detect common toxic gases such as carbon monoxide CH4, hydrogen sulfide H2S and flammable and explosive gas methane CH4. When the instrument detects that the concentration of any gas such as oxygen, carbon monoxide, hydrogen sulfide and methane exceeds the standard, it will send out an acousto-optic vibration alarm to remind the operator to pay attention, thus ensuring the safe and smooth removal of the internal model.