[An automatic dew-point hygrometer making use of beta-ray backscattering (author's transl)].
A proportional control system was employed on this hygrometer. The hygrometer was used in a box in which the temperature and the humidity were constantly regulated. The range of measured dew-point was from -26 degrees C to 60 degrees C in the atmospheric temperature of 0 degree C to 60 degrees C, that was the relative humidity of 12% to 100%, and the accuracy of the measurement was +/- 1 degree C.
D004583:Electrons; D006813:Humidity; D011839:Radiation, Ionizing; D012542:Scattering, Radiation; D013696:Temperature