Qualitative analysis of the LiClhygrometer
Abstract
A mathematical model is proposed which describes the LiClhygrometer system using secondorder derivative equations whose coefficients are functions of the heater voltage, ventilation wind speed, and ambientair temperature. The dynamic response to the step change of one parameter is shown to be equivalent to that of an ordinary secondorder system when both step and delta functions are applied. For the case of fixed operating conditions, the increase of the vapor pressure of the ambient air is found to raise the equilibrium liquid water content such that the vapor pressuretemperature curve of the hygrometer has a steeper inclination than that of the saturated bulk LiCl solution.
 Publication:

Papers Meteorology Geophysics
 Pub Date:
 December 1987
 Bibcode:
 1987PMG....38..279S
 Keywords:

 Hygrometers;
 Lithium Chlorides;
 Vapor Pressure;
 Ambient Temperature;
 Dew Point;
 Electrical Resistivity;
 Wicks