2019/11/29 by McGuire, J. H.
#calibration #calorimeters #calorimètre #pyrometers #pyromètre #étalonnage
paper · doi:10.4224/40001495
To allow the absolute calibration of field and laboratory radiometers in the range 0.1 to 1.5 cal/cm(2) sec, a continuous flow radiation calorimeter has been constructed, based on a design originally developed by the British Joint Fire Research Organization. The temperature difference established between a water outlet and an inlet is sensed by a thermistor bridge and the radiation intensity measurement is made in terms of the level of the electrical power, applied to a built-in immersion heater, which is necessary to reproduce the same temperature difference.