Indication method for analog signals of many accidents of intelligent meters
The intelligent remote alarming method for instrument fault comprises: determining the output signal range for instrument current loop, subtracting 4-20mA to use as the alarming signal range, spacing and classifying the alarming current signal; when failure, according to fault state, sending digital...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The intelligent remote alarming method for instrument fault comprises: determining the output signal range for instrument current loop, subtracting 4-20mA to use as the alarming signal range, spacing and classifying the alarming current signal; when failure, according to fault state, sending digital code to DAC to generate alarming current for remote alarming. This invention applies analog dc current signal beyond 4-20mA for alarming. |
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