Very low power contaminant detection circuit
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United States of America Patent
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Mar 26, 2024
Grant Date -
Jun 18, 2020
app pub date -
Dec 17, 2019
filing date -
Dec 18, 2018
priority date (Note) -
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Abstract
A contaminant detector is capable of sending a signal or alert when a contaminant is detected within a housing of a utility meter, a meter transmission unit (MTU), or other associated equipment. Circuitry enclosed within the housing is capable of detecting utility usage, transmitting information between one or more utility meters and a utility provider, and/or otherwise monitoring or tracking utility usage. The contaminant detector includes a resistive voltage divider network having a resistance that varies when in contact with a contaminant such as a form of water or metal. The variable resistor has a serpentine structure comprising a plurality of detective fingers that are formed from conductive material and separated by a non-conductive substance.
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