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1. 发明授权

US5378995A Low molecular weight organic liquid detection sensor in the shape of a wire and detector using this sensor 失效
标题翻译：低分子量有机液体检测传感器，采用该传感器的线和检测器
公开(公告)号：US5378995A
公开(公告)日：1995-01-03
申请号：US25135
申请日：1993-03-02
申请人： Toshio Kudo , Masaaki Nagai , Yasuo Shiraiwa
发明人： Toshio Kudo , Masaaki Nagai , Yasuo Shiraiwa
IPC分类号： G01M3/16 , G01N27/12 , G01N33/24 , G01R27/22 , G01N27/07
CPC分类号： G01N27/12 , G01M3/165 , G01N33/241
摘要： A low molecular weight organic liquid detection sensor which is a wire body formed by coating a core material with a conductive layer made of a substantially non-crosslinked material having a Shore A hardness not more than 70 which is mainly composed of thermoplastic elastomer and conductive carbon, the conductive layer varying in its electric resistance upon contact with a low molecular weight organic liquid. The sensor of the invention permits secured mechanical strength, its easy installation in a narrow conduit or over a wide area, and highly sensitive sensing of a low molecular weight organic liquid in the longitudinal direction. The detector of the invention comprises a sensor having the above structure, preferably a porous body which houses and protects the sensor, a means which is connected to this sensor and detects electric resistance variation, and a means for transmitting this electric resistance variation as an alarm signal, and the detector can be used in the presence of underground water, which in turn permits use of existing liquid-leakage detection holes and installation at low costs.
摘要翻译：一种低分子量有机液体检测传感器，其是通过用主要由热塑性弹性体和导电碳组成的肖氏A硬度不大于70的基本上非交联材料制成的导电层涂覆芯材而形成的线体导电层在与低分子量有机液体接触时其电阻发生变化。本发明的传感器允许确保机械强度，其易于安装在狭窄的管道中或在广泛的区域上，以及在纵向上对低分子量有机液体的高度敏感的检测。本发明的检测器包括具有上述结构的传感器，优选地容纳和保护传感器的多孔体，连接到该传感器并检测电阻变化的装置，以及用于将该电阻变化作为报警传递的装置信号，并且检测器可以在地下水的存在下使用，这又允许使用现有的液体泄漏检测孔并以低成本进行安装。

2. 发明授权

US5546790A Low molecular weight organic liquid leakage detection system 失效
标题翻译：低分子量有机液体泄漏检测系统
公开(公告)号：US5546790A
公开(公告)日：1996-08-20
申请号：US422309
申请日：1995-04-13
申请人： Toshio Kudo , Masaaki Nagai , Yasuo Shiraiwa
发明人： Toshio Kudo , Masaaki Nagai , Yasuo Shiraiwa
IPC分类号： G01M3/04 , G01M3/16 , G08B21/00 , G01M3/40
CPC分类号： G01M3/16 , G01M3/045
摘要： A low molecular weight organic liquid leakage detection system comprising plural sensors capable of showing an electrical resistance variation upon contact with a low molecular weight organic liquid, said sensors being installed at every possible leakage site, being electrically connected in series, and being electrically further connected to an electric resistance detector. The detection system of the present invention is advantageous in that it permits precise and efficient detection of low molecular weight organic liquid leakage, with no need to provide a long sensor over the entire detection area.
摘要翻译：一种低分子量有机液体泄漏检测系统，包括能够在与低分子量有机液体接触时显示电阻变化的多个传感器，所述传感器安装在每个可能的泄漏部位，串联电连接，并且电连接到电阻检测器。本发明的检测系统的优点在于，其允许精确和有效地检测低分子量有机液体泄漏，而不需要在整个检测区域上提供长的传感器。

3. 发明授权

US5173684A Low molecular weight organic liquid sensor and detection system using same 失效
标题翻译：低分子量有机液体传感器和使用其的检测系统
公开(公告)号：US5173684A
公开(公告)日：1992-12-22
申请号：US578700
申请日：1990-09-07
申请人： Yasuo Ijiri , Toshio Kudo , Yasuo Shiraiwa
发明人： Yasuo Ijiri , Toshio Kudo , Yasuo Shiraiwa
IPC分类号： G01M3/04 , G01N27/12
CPC分类号： G01N27/126 , G01M3/045
摘要： The invention provides a sensor whose conductive sheet is composed of substantially non-cross-linked thermoplastic elastomer and conductive carbon. The conductive sheet has a maximum of 70 of Shore A-hardness. By virtue of the above structure, the sensor very sharply responds to electric resistance of the conductive sheet against presence of low molecular weight organic liquid such as gasoline and vapor thereof to quickly detect leaked organic liquid or vapor with extremely sharp sensitivity. Furthermore, the detection system of the invention using the above sensor has a simple circuit which precisely detects varied electric resistance of the conductive sheet. The detection system characteristically incorporates an alarm generator to instantly warn operators of the presence of leaked organic liquid such as gasoline and vapor thereof.
摘要翻译：本发明提供一种传感器，其传导片由基本上非交联的热塑性弹性体和导电碳构成。导电片具有最大70肖氏A硬度。凭借上述结构，传感器非常清楚地响应于导电片的电阻与低分子量有机液体如汽油及其蒸气的存在，以极高的灵敏度快速检测泄漏的有机液体或蒸气。此外，使用上述传感器的本发明的检测系统具有精确地检测导电片的变化的电阻的简单电路。该检测系统特征性地结合了报警发生器，以立即警告操作者泄漏的有机液体如汽油及其蒸气的存在。

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