How to monitor toxic and hazardous gases?
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In chemical enterprises, there are often leaks, volatilisation or a variety of other causes of combustible and toxic gases, all of which are called hazardous gases. For employees in them, monitoring the concentration of hazardous gases in the operating environment is an important measure to prevent fire, explosion, poisoning and asphyxiation.
Monitoring of gas in the ambient air, often given directly to the gas environment criticality, that is, the gas content in the air and the lower limit of its explosion as a percentage to indicate (% LEL); therefore, this monitoring is sometimes called ‘explosion detection’, the monitoring instrument used is also known as the ‘explosion detector’.
Toxicity of the more critical places to carry out automatic monitoring of toxic gases, in the target to reach the maximum allowable concentration (before the concentration of poisoning) can be issued an alarm, in order to implement appropriate countermeasures. In addition, it is an essential safety measure to monitor toxic gases when entering equipment for maintenance, or when operating in places where toxic gases are simply generated, such as isolated production rooms, gutters, basements, and storage rooms.
In addition to the above two gases, oxygen content monitoring should also be carried out. One is the oxygen deficiency monitoring in the air, before entering some equipment or places that may lack oxygen, the oxygen content must be monitored, and it is strictly prohibited to enter the place when the oxygen content is lower than 18%, in order to prevent asphyxiation due to lack of oxygen. Another is the monitoring of oxygen content in combustible gas. When the oxygen content in combustible gases (or vapours of flammable liquids) is too high, it is more likely to explode, so it is also necessary to monitor the oxygen content in combustible gases for alarm.
How to detect toxic and hazardous gases?
Electrochemical gas sensor is a sensor in the sensitive material and the measured gas chemical reaction, the release of electric charge to form an electric current, by testing the size of the current can be determined by the measured gas concentration.
Electrochemical sensors have been used to monitor a wide range of toxic gases since the 1980s and have shown good sensitivity and selectivity. Of all the sensor types available for gas monitoring, electrochemical sensors have the lowest power consumption and are most widely used in the industrial field for monitoring toxic and hazardous gases.
The development of toxic and hazardous gas detection equipment continues to promote human concern for the environment and health, and has helped people prevent many of the dangers posed by harmful gases. It is believed that with the progress of science and technology, the performance and functions of toxic gas detection equipment will continue to improve, bringing more convenience and safety for people's lives.
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Can a smoke alarm detect a gas leak
Smoke alarm detect cannot detect a gas leak. This is because smoke detectors mainly detect smoke, not gas.
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Difference between TVOC VS VOC
VOC refers to the weight of organic volatile matter contained in 1 liter of paint, while TVOC refers to the weight of organic volatile matter contained in 1 liter of paint in the substance of water removed.
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Electrochemical Sensor Solutions for Toxic and Hazardous Gas Detection
Currently known toxic gases can be categorized into irritant gases and asphyxiating gases according to their toxic properties.
The LEL gas detector is a device for monitoring the concentration of combustible gases in the environment. To ensure its accuracy and reliability, periodic calibration and maintenance is required during use.
lora agriculture sensors application potential
With the continuous development of science and technology, smart agriculture has become a hot topic in the field of agriculture.lora agriculture sensors are agriculture sensors that communicate using LoRa technology.