WATT-HOUR METER

摘要

PROBLEM TO BE SOLVED: To provide a watt-hour meter in which the replacement of components is not required. SOLUTION: The watt-hour meter is provided with a multiplication part 2 which is driven according to electric power. The meter is provided with drive parts 3, 4 which drive the multiplication part by the input of a voltage and by the input of a current. The part 2 is constituted of a conductive fluid which is housed in a tube material 1 so as to be movable in its hollow part.