Electricity meter protection circuit - using magnetic field recording element to indicate possible falsification of readings
The method detects if an electricity meter has been subjected to a strong magnetic field in order to falsify the reading of energy consumed. It consists of incorporating a permanently magnetic material in the plastic casing in such a way that a small mark dependent on the magnetisation of this mater...
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| Format: | Patent |
| Sprache: | eng ; ger |
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| Zusammenfassung: | The method detects if an electricity meter has been subjected to a strong magnetic field in order to falsify the reading of energy consumed. It consists of incorporating a permanently magnetic material in the plastic casing in such a way that a small mark dependent on the magnetisation of this material can be examined when the meter is read. Any change or obliteration of this mark can be observed either with a probe or magnifying apparatus, and this signifies previous application of a magnetic field. |
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