Pyrometer
The problem associated with measurement of high temperatures by means of conventional
methods (lack of stability, breakdown of insulation, etc.) provided motivation of initial
developments in pyrometer (inferring temperature from a measurement of the radiation
emitted by the body). [1]
By employing the principles of radiation, methods have been developed to measure surface
temperatures without contacting the body. These non contact methods have eliminated the
problems of stability and insulation failure that plague the sensor methods of measurement
of very high temperatures.