Oxygen detector is a commonly used safety monitoring equipment in industrial, medical, laboratory and other fields. It is used to detect the oxygen concentration in the environment in real time to ensure personnel safety and production stability. It is important to understand the normal value range of the oxygen detector. Too high or too low oxygen concentration may cause harm to human health or the production environment. Do you know how normal the value of oxygen detector is? The following is a brief introduction to yiyuntian electronics:

oxygen detector technical standards:

1.Normal concentration range

General standard: according to GB/T 50493-2019 Petrochemical combustible gas and toxic gas detection and alarm design standard, the normal concentration range of ambient oxygen is 19.5%VOL to 23.5%VOL.

medical standard: the normal display value of blood oxygen saturation (SpO₂) detector should be between 95% and 100, and less than 90% may indicate hypoxia.

2.Alarm threshold setting

Low limit alarm (oxygen deficiency): Usually set to 19.5%VOL, below which may cause dizziness, dyspnea or even suffocation.

High Alarm (Oxygen Enrichment): Typically set to 23.5%VOL, above which may increase the risk of fire or cause oxygen toxicity.

3.Accuracy and calibration requirements

Accuracy requirements: the accuracy of the oxygen detector should be within ± 0.1 VOL to ensure data reliability.

Calibration cycle: It is recommended to perform professional calibration every 6 months and use standard gas (such as 21% VOL oxygen) to verify the accuracy of the equipment.

In summary, we can see that the normal range of the oxygen detector varies with the application scenario, but the core principle is to maintain 19.5~23.5 The safety interval.Whether it is industrial production, medical monitoring or daily safety protection, correct interpretation of test data and timely measures can effectively prevent the risk of hypoxia or oxygen enrichment. Regular maintenance of instruments and training of personnel's emergency response capabilities are key links to ensure safety.