Film resistance thermometer is three-dimensional

All along, the theoretical analysis of thin-film resistance thermometers are from a two-dimensional medium is deduced simplified as a semi-infinite-dimensional mathematical model, through numerical integration or thermoelectric conversion of analog networks to get the sensor surface heat flow values. However, the film resistance  mcb circuit breaker  is three-dimensional, the surface of the platinum layer is a temperature  power transformers , and as the temperature rises the platinum layer into the platinum layer of the heat flow will gradually decrease. Therefore, the temperature of the test information is actually measured is a time-varying flux caused by the hot wall, which in the latter part of the data processing must be considered.