Pregled bibliografske jedinice broj: 335764
Temperature measurements by means of NTC resistors and a two-parameter approximation curve
Temperature measurements by means of NTC resistors and a two-parameter approximation curve // Measurement, 41 (2008), 3; 294-299 doi:10.1016/j.measurement.2006.11.007 (međunarodna recenzija, članak, znanstveni)
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Naslov
Temperature measurements by means of NTC resistors and a two-parameter approximation curve
Autori
Ilić, Damir ; Butorac, Josip ; Ferković, Luka
Izvornik
Measurement (0020-2940) 41
(2008), 3;
294-299
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
NTC resistors; approximation curve; least-squares method
Sažetak
Table data for resistance-versus-temperature (R-T) dependence of negative temperature coefficient resistors (NTCRs), which have resistance RN = 10000 ohm at a temperature of 25 °C and limits of error 0.2 °C in the range from 0 °C to 70 °C [1-4], are analysed. Determination of two approximation curves is described: a three-parameter one (abbreviated AC1) and a two-parameter one (AC2). These curves are compared with the three-parameter 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 from the table data of temperature. The obtained results are presented, showing a very good agreement of curves, with their mutual differences within a few millikelvins, and the differences from the table data mostly within 10 mK for the range from 0 °C to 70 °C (differences are larger only at a few points). Therefore, the presented two-parameter approximation curve AC2 can be very conveniently used with some NTCRs for the calculation of unknown temperature from the measured resistance.
Izvorni jezik
Engleski
Znanstvena područja
Elektrotehnika
POVEZANOST RADA
Projekti:
036-0363081-1650 - Mjerenje elektromagnetskih veličina na etalonskoj razini (Ilić, Damir, MZO ) ( CroRIS)
036-0363081-1652 - Razvoj pretpostavki za ostvarivanje državnog etalona magnetskog polja (Pavić, Armin, MZO ) ( CroRIS)
Ustanove:
Fakultet elektrotehnike i računarstva, Zagreb
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
