![]() This meter reading information is sent to the electricity utility several times of day, through the power lines, or by radio frequency or cellular networks. This communication chip sends meter reading data by radio signal to a mobile collector (and rests dormant between these times). The numbers on the dial turn as the disk rotates, keeping a continuous tab on total energy consumed.Īutomated meters (or "smart" meters) work in a similar manner to traditional electromechanical meters, but they also contain a battery and a communication chip.The rotation of the disk is slowed by two permanent magnets that exert a proportional opposing force.The disk is propelled by the interaction of the magnetic fields produced by two electromagnets surrounding the disks: one that is powered by the power being supplied from the incoming power lines, and the other by the current being demanded by the building's electrical circuits.They contain an electrically conductive, non-magnetic metal disk that rotates at a speed proportional to the amount of electricity consumed. Dials that indicate the total amount of power consumedĮlectromechanical induction meters are the most common type of electricity meters currently used the US. ![]()
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