Static and Dynamic Behavior of Helium-Gas Thermometers Below 77° K
Temperature measurements below 100°K are generally accomplished using one of four basic sensing elements—thermocouples, resistance thermometers, semiconductors, and gas thermometers. The first three devices depend on the conversion of an output voltage to the desired temperature information. They are, therefore, basically electrical in nature, The latter, depending only on the unique temperature-pressure relationship of a pure gas, is inherently thermodynamic in character.
KeywordsHeat Transfer Effect Lawrence Radiation Laboratory Friction Pressure Drop Vapor Pressure Equilibrium Vary Volume Ratio
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