Hlutverk flytjanlegs súrefnis O2 mælis:
In an oxygen-deficient environment, in order to maintain sufficient oxygen inhalation, the human body will speed up breathing to increase ventilation. At atmospheric pressure, the possibility of oxygen toxicity occurs when the concentration of oxygen exceeds 40 percent . There are two main types of human oxygen toxicity: ① lung type. Inhaled oxygen concentration of 40 percent to 60 percent can lead to pulmonary edema, asphyxia; ② neurological type. Inhaled oxygen concentration of more than 80 percent can lead to coma, respiratory failure and death. Detecting oxygen concentration with a portable oxygen detector can prevent oxygen deficiency and oxygen enrichment in the working environment. Usually, the oxygen concentration in the detector is expressed by volume fraction. Generally, the oxygen-deficient value set by the alarm is 18 percent and the oxygen-enriched value is 23 percent . The oxygen-enriched working environment is prone to fire and explosion accidents.
