Oxygen is an essential element of the human body, and the oxygen content in the air is very important to the human body. In the general environment, the air inhaled by people accounts for 20.93 per cent of oxygen and 0.03 per cent of carbon dioxide by volume; in the exhaled air, carbon dioxide rises by about 3.5 per cent and oxygen falls by about 17 per cent. Although oxygen is an important part of air, it does not mean that it is non-toxic. Too low and too high oxygen content will cause certain hazards. Therefore, we need to install an oxygen alarm. Do you know what the Oxygen Alarm alarm range is? The following is a brief introduction by yi yun Tian:

normal human body only needs a certain concentration of oxygen, too high or too low oxygen concentration is harmful to human body:

oxygen concentration (% volume)-indication (at atmospheric pressure)

& gt;23.5-oxygen enrichment, danger of severe explosion

20.9-normal oxygen concentration

19.5-minimum allowable oxygen concentration

15-19% --- reduce work efficiency, it can lead to head, lung and circulatory problems

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

8-10% --- loss of intelligence, fainting, unconscious, pale face, purple lips, nausea and vomiting

6-8%-fatal in 8 minutes;

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

100-Fatal/6 min

50%-Fatal/4-5 min Healing

Therefore, under normal circumstances, the alarm range of oxygen alarm is generally 19.5 vol and 23% vol, and alarms will be given when the alarm is lower than 19.5 vol and higher than 23%. The measurement range of oxygen concentration value is generally 0-30% vol, and it is normal when the alarm range is between 19.5% and vol-23 vol.The oxygen alarm can be configured in the oxygen use place to detect the oxygen concentration on site in real time to ensure the safety of on-site personnel.