MOS-type gas sensors are able to measure low gas concentrations in the ppb range, levels not detectable with catalytic combustion and electrochemical-type gas sensor. This ability is essential for detection of offensive odors and VOCs.
In addition to manufacturing MOS-type gas sensors, Figaro has also developed a gas chromatograph using MOS-type gas sensors for low concentration measurement. This small and lightweight device is proving useful at locations where measurement was previously difficult.
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Gas Sensors & Modules / World leader in gas sensing innovation
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One of the primary features of MOS-type gas sensors is their ability to detect low gas concentrations. Furthermore, the potential exists for supplying sensors for a wide variety of gases by modifying sensor materials during manufacture.
Specialized areas for MOS-type gas sensors
The MOS-type gas sensors is able to detect very low concentrations of gas, leading to the manufacture of gas chromatographs for the measurement of low gas concentrations. Development of technology to concentrate sampled gas allows this device to measure certain gases at the ppb level. This gas chromatograph is small and portable, and has received high praise for its use on-site to measure VOCs inside homes and to detect environmental pollutants in factories.
Low cost and mass production are considered to be the advantages of MOS-type gas sensors. Figaro has focused on this point and directed its efforts towards development of mass production technology that incorporates thick-film printing techniques. This entails application of sensor materials to a ceramic base, repeated firing, and segmentation for mass production of chips. Among the many many advantages of this method, it allows for stable mass production of large numbers of sensor chips in a single operation, minimizing the variations in quality inherent in manual work while helping to control manufacturing costs at the same time.
Applications for MOS-type gas sensors have expanded from the conventional areas of gas leak detectors and carbon monoxide detection into diverse and targeted areas such as high-precision detection equipment (e.g. gas chromatographs) and alcohol detectors. With rapid technical development, this expansion is expected to continue into areas such as breath/body odor analysis for health maintenance, early detection of diseases in the healthcare field, and detection of specific illnesses. The possibilities are endless.
