What gases can a gas sensor detect?
Combustible gases that are detectable with gas sensors include methane (present in town gas and natural gas), butane, propane, hydrogen, and alcohol vapour. Sensors have also been developed for ozone, nitrogen dioxide, chlorine, ammonia, and toluene.
How does a gas sensor work?
Electrochemical sensors: These are highly sensitive detectors generally used for measuring toxic gases such as carbon monoxide. They work by sensing electrodes in the air and then give off a warning signal using electrical currents. They’re specifically used to measure hydrocarbon gases.
How does electrochemical gas sensor work?
Electrochemical sensors are used for detecting oxygen and toxic gases. More specifically, they measure the concentration of a specific gas within an external circuit. This is done by method of oxidation or reduction reactions. These reactions generate the positive or negative current flow through said external circuit.
Why do we need gas sensor?
Gas sensor, as one of the most important devices to detect noxious gases, provides a vital way to monitor the concentration and environmental information of gas in order to guarantee the safety of production. Therefore, researches on high sensitivity, high selectivity, and high stability have become hot issues.
What is application of gas sensor?
Gas sensors are critical for monitoring and detecting hazardous inert gases, and ensuring safety, air quality, or analyzing environments throughout many different industries.
What are the applications of gas sensor?
Gas sensor (You et al., 2012) converts the components and concentrations of various gases into standard electrical signals by using specific physical and chemical effects. It has been widely used in the detection of noxious and harmful gases and natural gas leakage.
Where is a gas sensor used?
They are commonly used to detect toxic or explosive gasses and measure gas concentration. Gas sensors are employed in factories and manufacturing facilities to identify gas leaks, and to detect smoke and carbon monoxide in homes. Gas sensors vary widely in size (portable and fixed), range, and sensing ability.