Hydrogen sulfide (H2S) is a colorless, toxic gas with a strong odor similar to that of rotten eggs, which is extremely harmful to the human body.
Hydrogen Sulfide Concentration Hazards:
| Concentration (ppm) | Hazard Description |
| 0.01-1.5 | Detectable odor, but long-term exposure may still cause irritation |
| 2-5 | Slight eye and respiratory irritation |
| 20-50 | Noticeable eye and throat irritation, possible headache and nausea |
| 50-100 | Severe irritation, prolonged exposure may cause pulmonary edema |
| 100-200 | Breathing difficulty, continuous exposure can be fatal |
| 300-500 | Short-term exposure may be lethal |
| >500 | Respiratory arrest or death within minutes |
The hydrogen sulfide toxic and combustible gas alarm developed by CMC company can provide early warning of gas leaks, prevent poisoning and accidents, and ensure safe production:
Technical parameters of fixed hydrogen sulfide gas alarm manufactured by CMC company:
| Item | Specification |
| Detected Gas | Hydrogen Sulfide (H₂S) |
| Detection Principle | Electrochemical |
| Detection Range | 0-100ppm (optional 0-50ppm, 0-200ppm, etc.) |
| Resolution | 1ppm |
| Accuracy | ±3%F.S |
| Response Time (T90) | ≤30 seconds |
| Output Signal | 4-20mA, RS485 or relay output |
| Operating Voltage | DC24V |
| Operating Temperature | -20℃～+50℃ |
| Operating Humidity | 0～95%RH (non-condensing) |
| Protection Level | IP65 or IP66 |
| Installation Method | Wall-mounted or pipeline installation |
| Housing Material | Aluminum alloy or stainless steel |
A hydrogen sulfide alarm system typically consists of a gas detector and a gas alarm controller. The gas detector is responsible for detecting the concentration of hydrogen sulfide gas in the environment, while the gas alarm controller is responsible for receiving and processing the data transmitted by the detector and issuing an audible and visual alarm.
Hydrogen sulfide gas alarms are widely used in petroleum refining, natural gas processing, chemical industry, sewage treatment plants, paper mills, biogas projects, pharmaceutical companies, coal mines and non-coal mines, laboratories, food processing plants, etc. If you need toxic and combustible gas detectors, please contact us and we will be happy to communicate with you for more product details.
