INTEGRATING FLOW METER AND INTEGRATING ELECTROMAGNETIC FLOW METER

摘要

PURPOSE: To miniaturize an integrating flow meter, and to make it light in weight and moreover to reduce its manufacturing cost by lessening the loading capacity of the battery of a battery driven integrating flow meter, and to change the battery from a primary battery to a secondary battery. ;CONSTITUTION: Each system of secondary batteries 2, 3, 4 has battery capacity enough to drive an integrating flow meter 1 by one system of secondary battery for one week. A change-over circuit 6 is changed over by a timer every one week to change over a battery for feeding electric power to the integrating flow meter 1. A solar battery 5 charges another system of secondary battery not connected to the integrating flow meter 1. Since the secondary battery separately carrys out electric discharge for feeding electric power to the integrating flow meter 1 and charging carried out through the solar battery 5, the battery capacity can be simply decided, and the battery life can be lengthened by applying cycle change instead of floating charge.;COPYRIGHT: (C)1995,JPO