07-04-2017, 02:33 PM
sir i want a seminar report on hazardous gas detection system please help me!
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seminar report on gas detection
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sir i want a seminar report on hazardous gas detection system please help me!
11-04-2017, 02:55 PM
A gas detector is a device that detects the presence of gases in an area, often as part of a security system. This type of equipment is used to detect a gas leak or other emissions and can interact with a control system so that a process can be closed automatically. A gas detector may sound an alarm to operators in the area where the leak is occurring, giving them the opportunity to exit. This type of device is important because there are many gases that can be harmful to organic life, such as humans or animals. Gas detectors can be used to detect combustible, flammable and toxic gases, and depletion of oxygen. This type of device is widely used in industry and can be found in places such as oil rigs to monitor manufacturing processes and emerging technologies such as photovoltaics. They can be used in fire fighting.
Methods of detecting gas leaks became a concern after the effects of harmful gases on human health were discovered. Prior to modern electronic sensors, early detection methods depended on less accurate detectors. Throughout the 19th and early 20th centuries, coal miners would take the canaries to the tunnels with them as an early detection system against life-threatening gases such as carbon dioxide, carbon monoxide and methane. The canary, usually a very singing bird, would stop singing and eventually die if not removed from these gases, pointing to the miners to leave the mine quickly. Prior to the development of domestic carbon monoxide detectors in the 1980s and 1990s, the presence of carbon monoxide was detected with a chemically infused paper that turned brown when exposed to the gas. Since then, many technologies and electronic devices have been developed to detect, monitor and alert the leakage of a wide range of gases.
As the cost and performance of electronic gas sensors improved, they have been incorporated into a wider range of systems. Its use in cars was initially to control engine emissions, but now gas sensors can also be used to ensure passenger comfort and safety. Carbon dioxide sensors are being installed in buildings as part of demand-driven ventilation systems. Sophisticated gas sensor systems are being investigated for use in medical diagnostic, monitoring and treatment systems, far beyond their initial use in operating theaters. Gas monitors and alarms for carbon monoxide and other harmful gases are increasingly available for home and office use, and are becoming mandatory in some jurisdictions. Originally, detectors were produced to detect a single gas. Modern units can detect various toxic or combustible gases, or even a combination. New gas analyzers can break the component signals of a complex aroma to identify several gases simultaneously.
Methods of detecting gas leaks became a concern after the effects of harmful gases on human health were discovered. Prior to modern electronic sensors, early detection methods depended on less accurate detectors. Throughout the 19th and early 20th centuries, coal miners would take the canaries to the tunnels with them as an early detection system against life-threatening gases such as carbon dioxide, carbon monoxide and methane. The canary, usually a very singing bird, would stop singing and eventually die if not removed from these gases, pointing to the miners to leave the mine quickly. Prior to the development of domestic carbon monoxide detectors in the 1980s and 1990s, the presence of carbon monoxide was detected with a chemically infused paper that turned brown when exposed to the gas. Since then, many technologies and electronic devices have been developed to detect, monitor and alert the leakage of a wide range of gases.
As the cost and performance of electronic gas sensors improved, they have been incorporated into a wider range of systems. Its use in cars was initially to control engine emissions, but now gas sensors can also be used to ensure passenger comfort and safety. Carbon dioxide sensors are being installed in buildings as part of demand-driven ventilation systems. Sophisticated gas sensor systems are being investigated for use in medical diagnostic, monitoring and treatment systems, far beyond their initial use in operating theaters. Gas monitors and alarms for carbon monoxide and other harmful gases are increasingly available for home and office use, and are becoming mandatory in some jurisdictions. Originally, detectors were produced to detect a single gas. Modern units can detect various toxic or combustible gases, or even a combination. New gas analyzers can break the component signals of a complex aroma to identify several gases simultaneously.
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