The oxygen alarm can accurately detect the oxygen concentration in different environments, and can be widely used in various oxygen environments. When the oxygen concentration is found to drop or leak, it can send out an alarm signal in time to prevent accidents. do you know the upper and lower settings of the oxygen alarm? The following is a brief introduction by Yiyuntian Electronics:

Oxygen Alarm Settings:

oxygen alarm usually displays the oxygen concentration in percentage. generally, the oxygen concentration value in normal ambient air is 20.9 VOL, and its alarm value is usually set at two critical points of 19.5 VOL (under oxygen) and 23.5 VOL (over oxygen). When the oxygen concentration is lower than 19.5 VOL, the alarm will send out the oxygen deficiency alarm, and when the oxygen concentration is higher than 23.5 VOL, it will send out the oxygen peroxygen alarm.

The alarm value of the oxygen alarm should be less than 19.5 VOL, which means oxygen deficiency alarm, and higher than 23.55VOL, which means oxygen enrichment alarm.

The main function of the oxygen alarm is to ensure that the oxygen concentration in the area is within the range that the normal human body can bear, while the normal oxygen concentration in the atmospheric environment is 20.9 Generally speaking, according to the human oxygen safety environment, the safety value of the oxygen alarm should be between 19.5 VOL and 23.5 VOL.

the oxygen concentration in the atmospheric environment exceeds 23.5 VOL and is in an oxygen-rich state, while it is lower than 19.5 The oxygen concentration value of% VOL is the oxygen environment. Whether it is an oxygen-rich environment or an oxygen-poor state, it has an impact on human health, and when the situation is serious, it may even lead to death.

Therefore, the alarm value of the general oxygen alarm should be less than 19.5 VOL, I .e. oxygen deficiency alarm, and higher than 23.55VOL, I .e. oxygen enrichment alarm.

According to scientific tests, in general:

O2 concentration is reduced to 18%, which is the limit not to cause serious health problems. At this time, continuous ventilation is necessary.

O2 concentration is 16%-12%. At this time, people have shortness of breath, rapid pulse, distraction, headache, nausea and tinnitus.

O2 14%-9%, people will have headache, drowsiness, nausea, cyanosis, weakness

O2 concentration 10%-6%, at this time people will be unconscious and lose consciousness, convulsions all over

O2 concentration drops below 6%, people will lose consciousness, coma, respiratory arrest, cardiac arrest, and die after 6 minutes.

at the same time, oxygen is also a strong oxidant in addition to maintaining human exhalation. when O2 concentration is too high, it is easy to cause explosion, and people will be poisoned by oxygen, so oxygen should not be higher than 23% in general.

to sum up, we can see that the alarm values of oxygen alarm are generally 19.5 vol and 23% vol, alarm will be given when the oxygen concentration is lower than 19.5 vol and higher than 23%, and the measurement range of oxygen concentration value is generally 0-30% vol, generally, it is normal between 19.5% and vol-23 vol.