Title :
The flat strap sandwich heater resistor for high frequency thermal transfer standard
Author_Institution :
Dipt. di Elettrotecnica, Politecnico di Milano, Italy
Abstract :
The paper deals with a new heater resistor (HR), for thermal converters denoted the “flat strap sandwich heater resistor” (FSSHR), which consists of a very thin flat strap resistor in a sandwich configuration, namely, a folded flat strap with many superimposed layers. In theory this HR is imperious to both the proximity effect and self-inductance and affected only by a greatly lowered skin effect. The FSSHR is capable of contributions to the ac-dc transfer error of a thermal converter as low as 10-4×10-6 in a wide frequency range. The theoretical evaluation of the transfer error of the thermal converters due to the FSSHR and test results on three thermal converters with the FSSHR as HR are also illustrated
Keywords :
equivalent circuits; measurement errors; resistors; thermal analysis; transfer standards; ac-dc transfer error; flat strap sandwich heater resistor; folded flat strap; high frequency thermal transfer standard; proximity effect; sandwich configuration; self-inductance; thermal converter; thermal converters; thin flat strap resistor; transfer error; Analog-digital conversion; Electric variables measurement; Frequency conversion; Heat transfer; Instruments; Proximity effect; Resistors; Skin effect; Testing; Thermal resistance;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2000. IMTC 2000. Proceedings of the 17th IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-5890-2
DOI :
10.1109/IMTC.2000.848665
