Ceramic humidity sensor

Electrical resistors – Resistance value responsive to a condition – Gas – vapor – or moisture absorbing or collecting


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338 34, 252520, H01B 106, H01L 700




A device for monitoring humidity as a function of electrical resistance comprises a humidity-sensitive resistor formed of a ceramic including lanthanum chromite, with or without a dopant selected from titanium oxide, silicon oxide and tin oxide, and having electrodes operably affixed to the surface thereof.

patent: 1720381 (1929-07-01), Simpson
patent: 4015230 (1977-03-01), Nitta et al.
patent: 4080564 (1978-03-01), Nitta et al.
patent: 4162631 (1979-07-01), Logothetis et al.
patent: 4231254 (1980-11-01), Logothetis et al.
patent: 4328478 (1982-05-01), Murata et al.
patent: 4357426 (1982-11-01), Murata et al.


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