Humidity sensor and a method for manufacturing the same

Details Humidity sensor and a method for manufacturing the same Humidity sensor and a method for manufacturing the same

2005-10-17

2010-06-22

Lee, Kyung (Department: 2833)

Electrical resistors

Resistance value responsive to a condition

Gas, vapor, or moisture absorbing or collecting

C338S034000, C073S335050, C324S674000, C361S286000

Reexamination Certificate

active

07741950

ABSTRACT:
The invention relates to a humidity sensor comprising a sensor element, a molding, which preferably consists of a thermoplastic material or a two-component polyurethane, epoxy or silicone casting and which is adapted to adhere to the sensor element, a dead-space volume, which is arranged in connection with the sensor element and which is covered by a membrane. The membrane is attached to an external surface of the molding and is adapted to protect the sensor element from exposure to ambient moisture and dirt and allowing diffusion of ambient air gas molecules, like water vapor, into the dead-space volume. The dead-space volume is less than 100 mm3.

REFERENCES:
patent: 4562725 (1986-01-01), Oka et al.
patent: 4856320 (1989-08-01), Bose et al.
patent: 4900405 (1990-02-01), Otagawa et al.
patent: 5608374 (1997-03-01), Ikejiri
patent: 5777206 (1998-07-01), Zuchner et al.
patent: 6812821 (2004-11-01), Fujita et al.
patent: 6840103 (2005-01-01), Lee et al.
patent: 2002/0173922 (2002-11-01), Potyrailo

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