Description: Experiment of the temperature sensor adopts thermistor, the thermistor is a kind of thermal sensitive resistor element, generally with the semiconductor material, can be divided into negative temperature coefficient thermistor NTC ( Negative Temperature coefficient Thermistor ) and the positive temperature coefficient thermistor PTC ( Positive Temperature Coefficient Thermistor ), critical temperature coefficient thermistor CTR ( Critical Temperature Resistor ) three, the test was negative temperature coefficient thermistor NTC, NTC is usually an oxide sintered body, particularly suitable for the temperature measurement, the resistance decreases with increasing temperature, the experience formula is:, type, R0 is in the 25or other reference temperature resistance, is the thermodynamic temperature ( K ), B called the features of material temperature, its value and temperature, mainly used for temperature measurement.
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刘洁琼传感器).doc
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