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thermocouple |
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thermocouple: see thermometer thermometer, instrument for measuring temperature . Galileo and Sanctorius devised thermometers consisting essentially of a bulb with a tubular projection, the open end of which was immersed in a liquid. ..... Click the link for more information. ; thermoelectricity thermoelectricity, direct conversion of heat into electric energy, or vice versa. The term is generally restricted to the irreversible conversion of electricity into heat described by the English physicist James P. ..... Click the link for more information. . thermocoupleor thermal junction or thermoelectric thermometerTemperature-measuring instrument consisting of two wires of different metals joined at each end. One junction is placed where the temperature is to be measured, and the other is kept at a constant lower (reference) temperature. A measuring instrument is connected in the electrical circuit. The temperature difference causes the development of an electromotive force that is approximately proportional to the difference between the temperatures of the two junctions. Temperature can be read from standard tables, or the instrument can be calibrated to display temperature directly. |
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These are more troublesome to clean because of the attached heater and thermocouple wires, which should not be removed for normal maintenance. During the first stages of the sinter process, temperature data is captured from the thermocouples that measure the temperature of the lining form. Presentations by NIST staff included talks on calibration of light-pipe radiation thermometers with the NIST-patented thin-film thermocouple calibration wafer, and on the characterization of light-pipe radiation thermometers in rapid thermal processing (RTP) measurements, and on modeling of radiation thermometer measurements in RTP. |
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thermocouple
