Abstract
In practical applications of temperature measurements where the temperature-sensitive bulb assembly is fastened rigidly to a containing vessel, heat-conduction errors must be considered in order to determine the accuracy of the indicated or recorded temperature. This paper presents for various thermometer-bulb assemblies, the experimental magnitude of the heat-conduction error possible in a medium with a low heat-transfer coefficient (air), and in a medium with a high heat-transfer coefficient (water). The effect of heat-conduction error on the overall response in simulated practical installations is discussed. It is shown that comparative information on response action of any type of temperature-sensitive element necessitates careful considerations of the condition of attaching the element to a wall or vessel, where heat-conduction effects are present.
