| 摘要 |
PROBLEM TO BE SOLVED: To quickly detect a fault of a device and gives a call to a processing center or the like, in regard to the system for detecting a minute leak of gas in a gas supply pipe 30. SOLUTION: The gas is made to flow to a master-and-slave type differential pressure regulator 1 from a propane gas cylinder 10 through a main regulator 20. A master regulator 11 of the master-and-slave type differential regulator 1 supplies the gas to the apartment house 40 side from the gas supply pipe 30. A slave regulator 12 is connected to a bypass gas passage 2 continuous to the gas supply pipe 30, bypassing the master regulator 11. A microcomputer gas meter 3 is provided for the bypass gas passage 2. The gas pressure is sampled at a high speed by a pressure sensor of the microcomputer gas meter 3 so as to detect a state of the use of a gas appliance 50. A flow rate of the gas is detected by the flow sensor of the microcomputer gas meter 3. When the gas appliance 50 is in the state of the use and a flow rate can not be detected for a prescribed time, fault alarm processing is performed and the call is given to the processing center. COPYRIGHT: (C)2010,JPO&INPIT |
