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DOI 10.5162/IMCS2012/PT1

Gas Sensors
Status and Future Trends for Safety Applications
Tesshi Shigemori
Chairman of Gas Alarm Industries Association of Japan,
Regular Associate Director of Japan Safety Appliances Association, and
President of New Cosmos Electric Co., Ltd.
Email: shigemori.tesshi@new-cosmos.co.jp
2-5-4 Mitsuya-naka,Yodogawa-ku,Osaka 532-0036, JAPAN

Abstract:
Actually there are many measures to prevent accidents caused by gas leaks and/or gas generations.
However, only gas sensors have the ability to detect directly the actual gas concentration when gas leaks and/or generations occur. That means, gas sensors are the final protection against gas accidents. In the following, the important role of chemical gas sensors in preventing accidents in industrial, residential, and commercial applications in Japan is described and future perspectives are illustrated. Key words: gas sensor, gas accident, safety, prediction, onsite environment, practice

Introduction
As Japan had been developing as an industrial country, the usage of gases increased in various applications and, as a consequence of that, the risk of accidents increased as well.
Then, the main issue for a safe application of gases has been and will be the prevention of accidents caused by explosion, fire, poisoning, and oxygen deficiency. It should be emphasized that if gas leaks and/or generations actually arise, only gas sensors are able to detect the gas concentration directly to give warnings of danger. That means, gas sensors are the final protection against gas accidents.
In gas detection, the minimum requirement is to provide a warning that the situation is dangerous at the moment. In addition, the prediction of a possible danger in the future is required. Furthermore, if one considers that a safe and comfortable environment would gradually turn into an uncomfortable and finally dangerous one, one could say that gas sensors to ensure a comfortable



References: [1] A.Tajiri, T. Matsuda, T. Shigemori, et al., Flammable Leakage Gases Diffusion for Petrochemical Plants - Investigation of Gas Detectors Establish Point - , Journal of the High Pressure Gas Safety Institute of Japan,Vol.24 No.5(1987) IMCS 2012 – The 14th International Meeting on Chemical Sensors 51

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