Humidity sensing element
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United States of America Patent
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-
Jan 31, 1984
Grant Date -
N/A
app pub date -
Dec 3, 1981
filing date -
Dec 3, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A humidity sensing element of the capacitance sensing type having two sets of interdigitated fingers of thin film platinum deposited on a glass substrate, all covered by a coating of water absorbing material such as cellulose acetate butyrate or a silicone rubber. The coating is of thickness such that it is substantially equal to or greater than the period of the fingers of the interdigitated electrodes.
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