Dielectrically Heated Sensor of Water-Vapor Pressure

Science  26 Jul 1968:
Vol. 161, Issue 3839, pp. 368-369
DOI: 10.1126/science.161.3839.368


Existing psychrometers of small dimensions cannot provide accurate long-term measurements of water-vapor pressure without frequent maintenance and recalibration. A small, simply constructed instrument employing dielectric heating and avoiding many of the problems of available sensors is described. The calibration curve depends only on the pressure-temperature curve for saturated lithium chloride.