Dew point hygrometer

Details Dew point hygrometer Dew point hygrometer

1985-05-24

1987-10-20

Rosenberger, R. A.

Optics: measuring and testing

By polarized light examination

Of surface reflection

374 19, H04L 2549

Patent

active

047010525

ABSTRACT:
A hygrometer utilizing condensation at the dew point to determine the water content of a gas. The presence of the condensate is determined using linear polarized light to distinguish the condensate from the metal surface on which it forms. A temperature gradient is established across the surface so that condensate forms on only part of the surface. The portion of the surface covered gives an indication of the temperature of the dew point.

REFERENCES:
patent: 2415776 (1947-02-01), Walton
patent: 3597084 (1971-08-01), Pagano
patent: 3623356 (1971-11-01), Bisberg
patent: 3904293 (1975-09-01), Gee
patent: 4216669 (1980-08-01), Harding
patent: 4526011 (1985-07-01), Logan et al.

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