| 摘要 |
PURPOSE:To enable an interrupter to operate corresponding to the differences of supplied gas meter numbers by a simplified means by providing a switch consisting of plural jumper lines to select the numbers of gas meters and the varieties of gases to be supplied to an interruption decider. CONSTITUTION:For example, when the variety of gas to be supplied is B and the number of a meter is No.5, the jumper lines J3 and J1 are closed and the jumper lines J2 and J0 are opened, and the supplied gas variety 6B and the meter number No.5 are confirmed by a micro computer 7, where flow rate per unit of time from the meter number No.5 is calculated and safety time period when the gas variety 6B is continuously used in the corresponding flow section is known for jundging interruption. When the gas variety is changed from 6B to 13A, the jumper line J3 is broken. The interrupter can thus be operated easily corresponding to plural varieties of gases and plural kinds of meters and its reliability can be raised. |
