| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a highly safe fluid cutoff device for adding remote cutting-off and return functions to an existing gas meter and preventing unauthorized use. <P>SOLUTION: By removably arranging the fluid cutoff device at a midpoint in a gas piping, it is possible to add a gas cutoff management function such as remote cutting-off, return, etc. to an existing flow measuring part. Since a communicating means 13 can make bidirectional communications, by transmitting an acceptance state of a remote operation from an external device 14 to the external device 14, it is possible to further increase reliability and safety. By detecting use with the fluid cutoff device 2 removed, it is possible to prevent unauthorized use and further heighten safety. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
