Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing gas sample
Patent
1996-08-16
1998-11-03
Spector, Lorraine
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing gas sample
422 98, G01N 2704
Patent
active
058304126
ABSTRACT:
A sensor device of the present invention is capable of surely detecting occurrence of a fire and a type of the fire. The sensor device includes a detection element made of an organic semiconductor element or an inorganic semiconductor element which is varied in characteristic value (i.e., resistance) thereof by both gas produced in a flaming-type fire and a smouldering-type fire and of which a variation in resistance by gas produced in a flaming-type fire is different in polarity from that by gas produced in a smouldering-type fire. A resistance of the detection element is extracted by a resistance extractor and then fed to a resistance decrease discriminator and a resistance increase discriminator, wherein a decrease or increase in resistance of the element is discriminated. An information output circuit outputs a predetermined signal depending on discrimination results provided by the discriminators, to thereby detect occurrence of a fire and/or a type of the fire.
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Hashimoto Ryukichi
Kimura Tetsuo
Takahashi Narimasa
Tanaka Seiichi
Chong Leighton K.
Nittan Company Limited
Spector Lorraine
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