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Describe the instrumentation system used for temperature measurement using thermistor.
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A thermistor is a type of resistor whose resistance is dependent on temperature. Thermistors are of two opposite fundamental types:

With NTC, resistance Decreases with temperature to protect against inrush overcurrent conditions. Installed seriesin a circuit. With PTC, resistance Increases with temperature to protect against overvoltage conditions. Installed parallel in a circuit. The Sensing Temperature sensor is Thermistor. The output of Thermistor is given to signal conditioning circuit Wheatstone bridge. The output of wheatstone bridge is amplified. The analog signal is converted to Digital by ADC further given to multiplexer, then output is displayed on computer. 

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