Abstract: An solid-state electricity meter includes an electronic measuring unit with an analog/digital converter which receives signals from amplifiers for various measurement ranges, and a control section with a microcomputer wherein the meter signal is processed, taking into account correction factors for the various elements of the circuit. Each correction factor is a single value for each respective measurement range, and the correction factors for each range are contained in corresponding meter-characteristic quantities which are stored in the electricity meter. Each meter-characteristic quantity represents a measurement value corresponding to a specific quantity of energy. Only a few (e.g., only 4) meter-characteristic quantities need be stored in the electricity meter. These meter-characteristic quantitites can be determined in a conventional calibration procedure, and they enable all the fixed errors of the signal processing to be compensated.

Abstract: The transmitter generates a current signal typical of the data to be transmitted, as a load current of a specific load resistance. To transmit this current signal, the load resistance is connected for a short time to a voltage source, with the result that a series of current pulses (I) is produced. The times of generation and/or the duration of these current pulses are chosen so that the resulting transmitted signal corresponds at least approximately to a desired theoretical signal (R). The method is very flexible with regard to the frequency of the current signal, and the transmitter requires neither amplifiers nor tuned resonant circuits which play a role in determining the transmission frequency. The method is particularly suitable for transmission, to a central unit, of data concerning, for example, the counter reading from counters distributed over the network or concerning the executed command from ripple control receivers.