Dew point hygrometers and dew sensors

Details Dew point hygrometers and dew sensors Dew point hygrometers and dew sensors

2005-08-09

2005-08-09

Verbitsky, Gail (Department: 2859)

Thermal measuring and testing

Transformation point determination

By change in optical property

C374S019000, C374S016000, C073S029010, C073S335010, C073S335020

Reexamination Certificate

active

06926439

ABSTRACT:
A dew point hygrometer for determining the dew point of a gas in which a displaceable transparent film is in contact with the gas and forms a condensation surface. The film is placed on a temperature control device controlling its temperature and an optic fiber, emits light on the film and reflected light is detected in another optic fiber, the two optical fibers being positioned at an angle with respect to the film. Condensation formed on the film changes the light transmitted by the film which is periodically displaced so that a new uncontaminated regions are exposed to the light.

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