gas sensor
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Gas sensors, also known as gas detectors, are devices designed to detect and measure the presence and concentration of gases in the surrounding environment. They play a critical role in various industries and applications, ensuring safety, environmental monitoring, and process control.
Gas sensors utilize different sensing technologies to detect specific gases effectively. These technologies include electrochemical sensors, catalytic sensors, infrared sensors, semiconductor sensors, and photoionization detectors. Each sensing technology has its strengths and limitations, offering varying levels of sensitivity, selectivity, and response time.
One essential characteristic of gas sensors is their selectivity, which refers to their ability to detect specific gases while ignoring others. This selectivity can be achieved through the choice of sensing technology or through additional filtering mechanisms. Selective gas sensors ensure accurate and reliable measurements, minimizing false alarms and providing precise detection of target gases.