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Gas Sensors
Gas Sensors
Toshniwal offers semi-conductor gas sensors and detectors manu- factured by Figaro Company, Japan. These find use in leakage tests and monitoring of domestic, industrial, and natural gas, town gas, liquid gas and poisonous gas such as carbon monoxide. Figaro's solid state sensor is mainly composed of sintered tin dioxide which detects gases through an increase in electrical conductivity when the reducing gases are absorbed on the sensor's surface. The application area has been expanded from safety to health, control systems and instrumentation, breath alcohol checkers, automatic cooking controls in micro-wave ovens, air quality, ventilation control systems for homes and automobiles. Category-wise applications cover combustible gases (methane, LPG gases, propane, hydrogen), toxic gases (carbon monoxide, ammonia, hydrogen sulphide), solvent vapour decection (alcohol, toulene, xylene), halo carbon gas, air quality (air contaminants, cigar- ette smoke, gasolene exhaust, etc), and cooking control (volatile gases and water vapour from food, and alcohol vapour from food).