有限空间气体 Detection
工业气体（待补充）
Hazards & Toxic Symptoms
"Confined space gas" specifically refers to hazardous gases that may accumulate in enclosed/semi-enclosed spaces with restricted entrances and exits and poor ventilation. Common scenarios include underground pipelines, storage tanks, basements, cold storage facilities, septic tanks, municipal well chambers, and ship cabins. According to GB 8958-2006/GB 30871-2022, four types of gases must be detected before work in confined spaces: ① oxygen (19.5%-23.5%); ② combustible gas (≤ 10% LEL); ③ carbon monoxide (≤ 24 ppm); and ④ hydrogen sulfide (≤ 10 ppm). This is the design basis for the "four-in-one" detector. Before entering, a pump-aspirated instrument should be used for "detection first, then work," with continuous monitoring during the operation.
Typical Application Scenarios
- For specific scenarios, please consult with an engineer
Detection Principle / Recommended Sensors
Based on the specific gas properties, it is recommended to contact an engineer for customization
Common Range：依据具体气体性质设定
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