Toxic gas detector effectively monitors harmful gas in mines
We know that gas detection should choose corresponding gas alarms and gas detectors according to different site environments. In confined places, such as sewers, agricultural closed granaries, railway tank cars, tunnels and other workplaces, inspection must be carried out before personnel enter, and the inspection must be carried out outside the confined space.
At this time, it is necessary to choose an alarm with a built-in multi-gas detection function, because the gas distribution and gas types in different parts of the confined space are very different. Therefore, a complete gas alarm in a confined space should be a non-contact, sub-site detection with multi-gas detection function to detect dangerous gases distributed in different spaces, and it should be a portable instrument that does not affect the work of workers. Only in this way can the absolute safety of the staff entering the confined space be guaranteed.
A gas detector is a gas sensor that detects gas composition and concentration. It is mostly used in mines and other places with hidden safety hazards, which greatly reduces the occurrence of some possible mine accidents.
Toxic Gas Sensor Effectively Monitors Harmful Gases in Mine
Gas compositions in mines represent a wide variety of hazardous conditions, including: carbon monoxide, carbon dioxide, sulfur dioxide, hydrogen sulfide (H2S), nitrogen dioxide (NO2), ammonia (NH3), hydrogen (H2) Etc., including oxygen deficiency. In some cases, methane may also reach explosive concentrations. Therefore, at present, different types of gas sensors are installed in many underground gas detection equipment, such as oxygen sensors, carbon dioxide sensors, carbon monoxide sensors, H2S sensors, SO2 sensors, CO sensors, NO2 sensors, NH3 sensors, etc. By replacing different gas detection probes, it can detect complex gas components and concentrations.
Introduction to Harmful Gases in Mine Shafts
Harmful gas in the mine refers to the gas in the mine that is harmful to the human body. Mainly carbon monoxide, carbon dioxide, hydrogen sulfide, sulfur dioxide, ammonia, etc. and explosive gases (such as biogas (methane), hydrogen and methane homologues (ethane, propane, etc.)]. The main component of harmful gas in coal mines is biogas.
carbon monoxide (CO)
Main hazards: Hemoglobin is the cell in the human blood that carries oxygen and expels carbon dioxide. The affinity between carbon monoxide and hemoglobin in human blood is 250-300 times greater than that of oxygen. Once carbon monoxide enters the human body, it first combines with the hemoglobin in the blood, thus reducing the chance of hemoglobin combining with oxygen, making the hemoglobin lose the function of oxygen transport, thus causing human blood to "suffocate". 0.08%, 40 minutes cause headache, dizziness and nausea, 0.32%, 5~10 minutes cause headache, dizziness, 30 minutes cause coma, death.
