Sulfur dioxide gas is the 1 colorless gas, which will cause certain harm to our body. If the staff accidentally inhale it, it will cause acute poisoning, which may be life-threatening. Therefore, the sulfur dioxide detector is especially suitable for ambient air, emergency (leakage) accident monitoring, petrochemical enterprise safety detection and storage tanks, pipelines, valves leak detection of total volatile organic compounds concentration. However, in the process of using sulfur dioxide detector, we need to set the alarm value. What should the SO2 detector alarm value be set? The following is a brief introduction by yi yun Tian:

the concentration of sulfur dioxide is harmful to human body:

1. SO2 detectable when 0.3 ~ 1ppm.

2. Very easy to detect odor at 3ppm.

3. Stimulation to nose and throat at 6 to 12ppm.

4. Allowable exposure concentration at 2ppm (OSHA, ACGIH).

5. Exposure concentration within 30 minutes at 50 to 100ppm.

6. when 400 ~ 500ppm is used to cause dangerous concentrations of pulmonary hydrops and glottic stimulation, prolonged exposure time will lead to death.

Sulfur dioxide detector alarm value setting range:

‍

the alarm value setting range of sulfur dioxide detector should be ≤ 100 OEL. generally speaking, the range of ammonia gas detector is generally 0-20ppm, the alarm value is set to 2ppm for primary alarm and 5ppm for secondary alarm.

especially when the working environment is labor-intensive and the air flow is normal, the first-level alarm needs to be set. places with good air circulation and less personnel flow that will not cause major accidents can be set as the second-level alarm accordingly. when the environment is in a sparsely populated place in the suburbs, it can also be set to three alarm levels.

To sum up, it is the setting range of the alarm value of the sulfur dioxide detector. The sulfur dioxide detector can quickly detect SO2 in the air. Using electrochemical detection principle, the measurement range is 0~10, 50, 100, 200, 500, 1000, 2000, 5000, 10000ppm, 100 Vol. You can select the appropriate range of the sulfur dioxide detector according to the on-site environmental requirements.