2. Auxiliary devices used in counting
In all but the simplest cases, the meter is associated with various pricing accessories, formerly made up of discrete elements, but now more often than not integrated into the meter itself. We're going to look at the main devices still in use today, but also those currently under development.
2.1 Tariff management accessories
These are essentially time management devices that divide time into tariff periods for pricing purposes. To trigger a tariff period change, commonly referred to as a tariff change, an electrical signal must be sent to the meter. In the case of an electromechanical meter or an electronic meter with a mechanical display, this signal activates an electromagnet which engages the indicator associated with the desired tariff period. The rate change...
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Auxiliary devices used in counting
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