Gas Sensors Summary

The global market for gas sensors is expected to grow rapidly. Major markets using gas sensors are motor vehicles, the process industries, the building sector and the medical sector.

 

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Summary

The global market for gas sensors is expected to grow rapidly. Major markets using gas sensors are motor vehicles, the process industries, the building sector and the medical sector.


Gas sensors
are sensors that convert chemical concentrations, partial pressures or gas compositions measured in air and gases into an output electric signal. They encompass two basic sections and functions: a receptor part enabling gas selectivity (chemical recognition) and a transducer part transforming the effects of a chemical reaction into an electric output signal.

Gas sensors in the automotive sector encompass oxygen sensors (Lambda probes) to control the air-to-fuel ratio, air quality sensors for intake air and cabin room quality control. NOx or NH3 sensors can be used for SCR catalyst control. Methane sensors are used in certain gas vehicles.

Chemical sensors for measuring gases in the process industries can be oxygen sensors, carbon dioxide sensors, hydrogen sensors and many more. They are used for process control and safety purposes.

In the building sector, gas sensors are required for room air quality control (carbon dioxide, VOC) as well as for gas warning purposes, when gas leakages occur (methane sensor) or incomplete combustion has occurred (carbon monoxide sensor).

In the medical sector, various gas sensors are used to measure oxygen concentration, carbon dioxide concentration as well as anesthetic gases.

Major trends: Solid electrolyte sensors are keeping their global market shares; optical and infrared gas sensors are even expanding their market share. Electronic noses are up and coming for food testing and perfume / scent testing in the cosmetics industry. Cooking control by means of gas sensor micro-arrays may also be a future option.

Conclusion

The global market for gas sensors was partially affected by the recent economic recession during the years 2008-09. As demand surged in 2010, mainly from the building and automotive sector, the strong pre-crisis growth level reemerged for the market.

 

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