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Two-parameters Approximation Curve for NTC Resistors (CROSBI ID 508152)

Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija

Ilić, Damir ; Butorac, Josip ; Ferković, Luka Two-parameters Approximation Curve for NTC Resistors // Proceedings of the 14th International IMEKO TC4 Symposium / Mindykowski, Janusz ; Tarasiuk, Tomasz (ur.). Gdynia: International Measurement Confederation (IMEKO), 2005. str. 482-487-x

Podaci o odgovornosti

Ilić, Damir ; Butorac, Josip ; Ferković, Luka

engleski

Two-parameters Approximation Curve for NTC Resistors

The table data for R-T dependence of NTC resistors (NTCRs), which have resistance RN = 10000 W at a temperature of 25 °C and limits of error &plusmn ; ; 0, 2 °C in the range (0 to 70) °C [1-4], are analysed. The determination of two approximation curves is described: a three-parameters (abbreviated as AC1) and a two-parameters (AC2). These curves are compared with the three-parameters Steinhart-Hart equation (S&H) by using the table data of resistance for different NTCRs and calculating the following for all of them: unknown parameters by the least-squares method, approximated temperature using determined parameters, and the difference to the table data of temperature. The obtained results are presented, which show a very good agreement of curves, with their mutual differences within a few millikelvin, and the differences to the table data within &plusmn ; ; 15 mK for the range (0 to 70) °C. Therefore, presented two-parameters approximation curve AC2 can be very convenient for the use with some NTCRs for the calculation of unknown temperature from the measured resistance.

NTC resistors; approximation curve

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Podaci o prilogu

482-487-x.

2005.

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objavljeno

Podaci o matičnoj publikaciji

Proceedings of the 14th International IMEKO TC4 Symposium

Mindykowski, Janusz ; Tarasiuk, Tomasz

Gdynia: International Measurement Confederation (IMEKO)

Podaci o skupu

14th International IMEKO TC4 Symposium

predavanje

12.09.2005-15.09.2005

Gdynia, Poljska

Povezanost rada

Elektrotehnika