Humidity sensor and a method for manufacturing the same
AssigneeSenmatic A/S
InventorKristian Ehrhorn
Life of this patent
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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.
Claims11
A humidity sensor comprising a sensor element, a moulding comprising 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, said membrane is attached to an external surface of the moulding and is adapted to protect the sensor element from exposure to ambient moisture and dirt and allowing diffusion of ambient air gas molecules into the dead-space volume wherein the dead-space volume is less than 100 mm3.
Dependencies are inferred from the claim text.