Linearizing the Self-Heated Thermistor Thermometer
Malcolm J. Bowman, F. H. Sagar
Abstract
Malcolm J. Bowman, F. H. Sagar
Abstract
A numerical method of linearizing a dc thermistor thermometer in which the power dissipated by the thermistor is sufficient to heat itself to a temperature significantly above ambient is developed and tested. It is shown that if the dissipation constant of the thermistor remains fixed, then the thermometer is able to detect temperature fluctuations considerably smaller than the internal temperature rise above ambient of the thermistor itself.
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A numerical method of linearizing a dc thermistor thermometer in which the power dissipated by the thermistor is sufficient to heat itself to a temperature significantly above ambient is developed and tested. It is shown that if the dissipation constant of the thermistor remains fixed, then the thermometer is able to detect temperature fluctuations considerably smaller than the internal temperature rise above ambient of the thermistor itself.
Key concepts: Thermistor, Thermometer, Materials science, Temperature measurement, Dissipation, Internal heating, Electrical engineering, Acoustics