Industrial gas future trends have wide applications, especially in the electronics industry. Currently, gas detectors are widely used for toxic and harmful gas detection in industrial applications. The key component of gas detectors is the gas sensor. I hope today's sharing by the editor can be helpful to the friends in the industry.
Gas sensors can be classified into three major categories in terms of their principles:
A) Gas sensors based on physical and chemical properties: such as semiconductor type (surface control type, volume control type, surface potential type), catalytic combustion type, solid thermal conductivity type, etc.
B) Gas sensors based on physical properties: such as thermal conduction type, optical interference type, infrared absorption type, etc.
C) Gas sensors based on electrochemical properties: such as potentiometric electrolytic type, Galvanic cell type, membrane ion electrode type, fixed electrolyte type, etc.
Based on the hazards, industrial gas future trends manufacturers classify toxic and harmful gases into two categories: flammable gases and toxic gases. Here are some brief introductions regarding flammable gases.
Due to their different properties and hazards, the detection methods also vary. Flammable gases are the most common hazardous gases encountered in industrial settings such as those in the petrochemical industry. They mainly consist of organic gases like alkanes and certain inorganic gases such as carbon monoxide.
For a flammable gas to explode, certain conditions must be met: a certain concentration of flammable gas, a certain amount of oxygen, and a sufficient heat source to ignite them. These are the three elements of an explosion (as shown in the leftmost diagram above), and all of them are indispensable. That is to say, without any of these conditions, a fire and explosion will not occur. When a flammable gas (vapor, dust) mixes with oxygen and reaches a certain concentration, it will explode when exposed to a certain temperature heat source. The concentration at which a flammable gas explodes upon encountering a heat source is called the explosion concentration limit, or simply the explosion limit, and is generally expressed in percentage. In fact, this mixture will not explode at any mixing ratio; there is a concentration range for it.
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