TEMPERATURE SENSOR ARRAY AND METHOD OF ANALYZING A CONDITION OF WATER IN A TANK OF A WATER HEATING SYSTEM
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United States of America Patent
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Issued Date -
Sep 1, 2011
app pub date -
Feb 18, 2011
filing date -
Feb 18, 2010
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Abandoned
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Abstract
A system for determining a temperature of a medium, such as water, in a volume, such as a water heater tank. The system includes a temperature sensor array and a variable frequency voltage supply. A first temperature sensing unit of the temperature sensor array includes a temperature sensor in parallel with a capacitor. The capacitor is selected such that the impedance is low relative to the resistance of the temperature sensor at frequencies above a threshold and high at frequencies below a threshold. A second temperature sensing unit of the array includes a second temperature sensor. The temperatures sensed by the various temperature sensors in the array are determined by selectively varying the frequency of the voltage supply.
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