Humidity sensor

The utility model relates to a humidity sensor which comprises a circuit board, a humidity-sensitive element, an inner layer encapsulating compound, an inner layer paper filter, an outer layer encapsulating compound, a metal shell and an outer layer paper filter, wherein the humidity-sensitive eleme...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	DU TIAN, HUANG GUIRONG, ZHENG TAO, LIU YANG, ZHU ZENGKUI, YANG CHENFENG, SHI YIFAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING
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Beschreibung
Zusammenfassung:	The utility model relates to a humidity sensor which comprises a circuit board, a humidity-sensitive element, an inner layer encapsulating compound, an inner layer paper filter, an outer layer encapsulating compound, a metal shell and an outer layer paper filter, wherein the humidity-sensitive element is arranged on the circuit board; the inner layer encapsulating compound is coated on the circuit board, and the humidity-sensitive element is exposed out of the inner layer encapsulating compound; the inner layer paper filter is attached to the humidity-sensitive element; the outer layer encapsulating compound is coated on the inner layer encapsulating compound, and the humidity-sensitive element is exposed out of the outer layer encapsulating compound; the metal shell is coated outside the outer layer encapsulating compound and provided with an open hole; the humidity-sensitive element is positioned below the open hole; and the outer layer paper filter is attached to the opening of the open hole and positioned