Patent ID: 6250134
Filing Date: 2001-06-26
Classification: G01N

Abstract:
An apparatus for determining the dew-point and/or the content of vapor in the air, for the use in a radio sondes, comprising:a dew-point mirror assembly, including a source of light, a reflector means, a cooling element means thermally coupled to said reflector means, a temperature sensor means adapted to measure the temperature of said reflector means, and a detecting sensor means adapted to receive the light emitted by said light source and reflected by said reflector means;a space means adapted to receive temperature sensitive components of said dew-point mirror assembly;means for stabilizing the temperature in said space means;said detecting sensor means being located in said space means;said dew point mirror assembly further comprising a light wave conductor means, whereby said detecting sensor means is optically coupled to said reflector means by means of said light wave conductor means; and said temperature sensor means is constituted by a thermo element means, said thermo element means comprises two sheet metal members that are soldered to each other face to face, one of said two sheet metal members having a free surface adapted to reflect light to thereby constitute said reflector means.