RADIATION MOISTURE MEASURING SYSTEM HAVING THERMOELECTRICALLY COOLED DETECTOR

摘要

An infrared moisture measuring system has an infrared radiation sensing element. The sensing element is mounted on a thermo-electric cooler and is contained in a sealed housing. The housing has a window transparent to infrared radiation coming from a material containing moisture which affects the radiation. The housing contains a desiccant which absorbs any moisture that may be present in the housing, and is contained within an outer housing also having a window transparent to said radiation. The atmosphere within each of said housings is substantially the same as that external to the outer housing.