Impedance type humidity sensor with protonconducting electrolyte and method of using same

摘要

A humidity sensing device comprising a solid electrolyte evidencing proton conductivity includes HZr.sub.2 P.sub.3 O.sub.12 or a composite comprising HZr.sub.2 P.sub.3 O.sub.12 /ZrP.sub.2 O.sub.7. The humidity sensing device is operative over a temperature range from 25. degree. C.- 600° C. The humidity sensor is operated by an impedance- type cell.