Predicting temperature in thermometers with high response time
The paper presents a software method that can be used to shorten the delivery time of the result of measurements displayed by thermometers with high response time. The method is based on the response time of a thermometer and on the calculation of the time constant under the specific measurement conditions. The estimation of the environmental temperature is made at each time step, to overcome the measurement errors that appear especially during the first seconds when high temperature changes occur. The experimental results of applying the method show its simplicity, its advantages and its limits.
The measuring principle of most thermometers is based on the heat transfer through convection . As a result of heat exchange between the sensor and the environment, they both arrive at the same temperature, which is then measured. The sensor measures and displays its own temperature, which is the same with the one of the environment after the heat exchange is finished.
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