The article presents a study of the origin extra harmonics in frequency spectrum thermocouple output signal when being heated by sinusoidal waveform current. It is natural to have first harmonic, which arises according Ohm’s law, as product current and total resistance junction conductors, well Peltier, Thomson effects, presence second caused heating conductors. fact that third higher arise con...

Standard Reference Material (SRM) 1749 is a lot of 18 specially-constructed gold versus platinum (Au/Pt) thermocouple thermometers, each calibrated on the International Temperature Scale of 1990 (ITS-90) and supplied with integral lead wires and a protective sheath. It is the most accurate thermocouple available over the range 0 °C to 1000 °C, with an expanded uncertainty (k=2) less than 8.3 m°...

This paper presents a polycrystalline silicon germanium (poly-SiGe) thermopile specially designed for thermoelectric generators used on human body. Both the design of the single thermocouple and the arrangement of the thermocouple array have been described. A rim structure has been introduced in order to increase the temperature difference across the thermocouple junctions. The modeling of the ...

This paper demonstrates the deterministic errors in thermocouple measurements, or bias, through numerical simulation and illustrates the impact of these erroneous measurements on inverse heat conduction problem solutions. The case of molten metal solidifying through cooling in a sand mold is considered. Artificial data for the sand surface temperature and at two different locations below the sa...