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Application difference between combustible gas sensor and carbon monoxide sensor

2021-07-23 16:04
Combustible gas sensors and carbon monoxide sensors are very different, and many users often confuse the two. In fact, there is a big difference between the two. If you accidentally install a combustible gas alarm in a place where you need to use a carbon monoxide alarm, installing a carbon monoxide alarm in a place where the combustible gas alarm should be installed will bring a great loss for life and property to people. 
The carbon monoxide sensor is used to detect carbon monoxide gas (CO). It cannot be used to detect methane (CH4) and other alkanes. The combustible gas sensor detects natural gas, which is the main component of methane gas. It detects explosions. Carbon monoxide detects poison. The sensor types are different. For gas, semiconductor or catalytic combustion sensors are used, and carbon monoxide is mostly electrochemical sensors.
Combustible gas sensor
The gas alarms on the market can usually be used to detect natural gas, liquefied petroleum gas or coal-based gas, etc., and urban pipeline gas is usually one of these three gases. The main component of these gases is methane (CH4) and other alkanes, which are mainly characterized by a pungent odor. When the concentration of these combustible gases in the air exceeds a certain standard, it will cause an explosion. The gas alarm detects this explosive alkane gas, and cannot be used to detect carbon monoxide gas.
Carbon monoxide sensor
City pipeline coal-based gas is a relatively special gas, which contains both CO and alkanes. Therefore, if you are only detecting whether the pipeline gas leaks, you can use either a carbon monoxide alarm or a gas alarm to detect. But if you want to detect whether the pipeline natural gas, liquefied petroleum gas, or coal-based gas produces excessive carbon monoxide gas during combustion, you need to use a carbon monoxide alarm to detect. In addition, heating with coal stoves, burning coal, etc. produce carbon monoxide gas (CO), not methane (CH4) and other alkanes. Therefore, a carbon monoxide alarm should be used instead of a gas alarm. If you use a coal stove for heating and burning coal, it is of no use to install a gas alarm. If a person is poisoned, the gas alarm will not sound. This is quite dangerous.
In short, if you want to detect toxic gas and you are concerned about whether it will be poisoned, then you must use a carbon monoxide alarm. If you want to detect explosive gas, you are concerned about whether it will explode. Then you must choose a gas alarm.
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