Article
Article
Watt-hour meter
Article By:
Knight, R. B. D. Division of Electrical Science, National Physical Laboratory, Teddington, Middlesex, United Kingdom.
Last reviewed:January 2020
DOI:https://doi.org/10.1036/1097-8542.740000
An electrical energy meter, that is, an electricity meter that measures and registers the integral, with respect to time, of the power in the circuit in which it is connected. This instrument can be considered as having two parts: a transducer, which converts the power into a mechanical or electrical signal, and a counter, which integrates and displays the value of the total energy that has passed through the meter. Either or both of these parts can be based on mechanical or electronic principles.
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