초록

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Abstract ▼ AI-Helper

A portable type K thermocouple thermometer is designed and fabricated to compensate the linearity to the high temperature $1000^{\circ}C$. The problems to be solved, which use a thermocouple thermometer are the compensation of the nonlinearity characters and reference compensation. The no...

A portable type K thermocouple thermometer is designed and fabricated to compensate the linearity to the high temperature $1000^{\circ}C$. The problems to be solved, which use a thermocouple thermometer are the compensation of the nonlinearity characters and reference compensation. The nonlinear character of the thermocouple is compensated, using an EPROM, and the reference compensation done using an IC AD595A. Before this compensation, there was the maximum error of $23.6^{\circ}C$(2.69%) at $876^{\circ}C$. However the results measured by the portable type K thermocouple thermometer fabricated show the character of the error of ${\pm}2^{\circ}C$(0.2%) in the range of the total temperature. This character satisfies the precision specifications of the type K thermal sensors in the range available $1000^{\circ}C$, which can be measured by the use of type K thermocouples. Therefore the portable type K thermocouple thermometer fabricated can be comparatively exactly used for the wide range of temperature of interest. Then this technique of compensating the nonlinear characters can be applied to the other kinds of thermal sensor compensation.