Application of Chemical Sensors in Mechanical Engineering.

Topics: Internal combustion engine, Mechanical engineering, Petroleum Pages: 4 (1475 words) Published: August 27, 2012
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[1]. 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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