In the process of industrial production, flammable, toxic, harmful gas leakage occurs from time to time, will cause serious threats to personnel, equipment, production, life. The main causes of leakage are: 1. Material defects in production equipment or containers. 2. The sealing ring and the sealing ring are not tightly sealed. 3. The welding place of the container is subjected to electrochemical corrosion for a long time. 4. Human negligence, etc.Leaking flammable or toxic gases are quickly diluted by air, so the location of the leak is difficult to find and even more difficult to quantify. Over time, these gases can build up in certain areas or in certain blind spots. When the content of combustible gas in the air reaches a certain value, it is easy to burn or explode in the presence of open fire. If this very dangerous hidden danger can not be found in time, it will bring great loss to personal safety and property.We can use a gas detector to monitor.