oxygen is the 1 important gas that our human body needs to breathe, but the oxygen content is too high or too low will have a bad effect on the human body, because the human body cannot feel the oxygen content in the air through the 5 body senses. Therefore, especially when entering a closed space, it is necessary to use an oxygen detector to detect the oxygen concentration in the space. Then oxygen detector how much oxygen concentration is normal? The following is a brief introduction by yi yun Tian:

oxygen concentration value:

4 ~ 6% convulsions within 40 seconds, respiratory arrest, death

8-10% loss of intelligence, fainting, unconsciousness, pallor, purple lips, nausea and vomiting

10-12% shortness of breath, loss of judgment, purple lips

15 ~ 19% reduce work efficiency, and can cause head, lung, and circulatory problems

19.5% oxygen minimum allowable concentration

20.9% oxygen concentration normal

50% fatal/4~5 minutes can be cured after treatment (closed environment, such as hyperbaric oxygen chamber)

100% fatal/6 minutes (closed environment, such as hyperbaric oxygen chamber or deep water)

Therefore, for safety:

oxygen (02): gas detector alarm when less than 18.5%VOL

oxygen (O2) value on the meter is 20.9%VOL, the normal content of oxygen in the air.

when the oxygen (O2) value on the meter is lower than 15% VOL, people will have shortness of breath, headache, dizziness and fatigue. If the action is slow, leave the scene immediately and report to the central control room.

regarding the normal oxygen concentration of the oxygen detector, today yiyuntian xiaobian will introduce it to you. The oxygen detector can quickly detect the oxygen concentration in the environment in any scene and any place. Before entering the closed space, we need to detect the oxygen in the space. Whether it is a hypoxic state or an oxygen-rich state, it will bring certain harm to our human health, and even bring life danger, therefore, it is necessary to detect the oxygen in the environment before entering the enclosed space or working in the enclosed space.