APPLICATION OF CHEMICAL SENSORS IN MECHANICAL ENGINEERING
A chemical sensor is a device that transforms chemical information, ranging from the concentration of a specific sample component to total composition analysis, into an analytically useful signal. The chemical information, mentioned above, may originate from a chemical reaction of the analyte or from a physical property of the system investigated. Chemical sensors its application in various fields of engineering like civil, environment, medical, biotechnology and mechanical engineering. Mechanical engineering is a discipline of engineering that applies the principles of physics and materials science for analysis, design,manufacturing, and maintenance of mechanical systems. It implements core principles along with tools like computer-aided engineering and product lifecycle management to design and analyze manufacturing plants, industrial equipment and machinery, heating and cooling systems, transportsystems, aircraft, watercraft, robotics, medical devices and more. There are a lot of potential areas where chemical sensors play a key role in innumerable processes concerning to functioning and safety in manufacturing plants , transport, aerospace, automobiles , combustion engines which are a few applications of mechanical engineering concepts. The monitoring and control of combustion-related emissions is a top priority in many Industries. The real challenge is not only to develop highly sensitive and selective sensors, but to maintain long-term stability in such aggressive environments. Various ceramic-based chemical sensors finds its application in automobile industry for detection of CO, NOx, O2, and CO2. CO sensors in the presence of hydrocarbons, nitrogen oxides and varying levels of oxygen. Semiconductive CO sensors based on SnO2 are commercially available and can be fabricated by the so-called thick-film technology. A paste of sensor material with controlled rheology is screen-printed on an alumina...
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