: pp. 39-41
Lviv National Agrarian University

The choice of ways of obtaining information about the temperature of the surface layers of a moving object is the crucial in determining  the  type of  temperature transducers. This choice depends on  the  row of specific  factors:  the speed of movement of the measured object relative the object, the state of the surface, the presence of related agents in near-surface layers, the presence of disturbing factors - noise, vibration, etc. The major factor seems to be the value of the heat carried out from the diagnosed object with the help of intermediate substance. 

The main method for measuring the temperature of moving and rolling objects is the application of sensors that are fixed near-by moving surfaces in such a manner that become in direct heat contact with them. Then arises the problem of accuracy of the received readouts or/and their interpretation. The study of the instrumental error component of thermotransducers, caused by the heat withdrawal at the measuring the middle-high temperatures, is considered in this paper. The value of this error depends on the design of the thermotransducer and its sensitive element, the intensity of the heat exchange with environment and the features of its contact with the measured object. 

The physical principles and model  foundations of designing  thermometers are accessed  in  the paper. Numerical schemes for  computing  the  thermal  state  of  thermotransducer  as  well  as  the  method  of  resolving  their  constructive  parameters  are considered. At the same time, the problem of the possibility of an adequate mathematical description on the basis of corresponding physical and mathematical models with the subsequent use of the calculated data for creation of new and optimization of existing thermometric means remains a current topical issue.

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