Electrical resistors – Resistance value responsive to a condition – Gas – vapor – or moisture absorbing or collecting
Patent
1982-01-25
1984-08-07
Envall, Jr., Roy N.
Electrical resistors
Resistance value responsive to a condition
Gas, vapor, or moisture absorbing or collecting
73336, 733365, 252517, 252518, 252519, 252520, 252521, H01B 100
Patent
active
044646470
ABSTRACT:
A sintered body for a humidity sensor is formed by baking a blend at 1,000.degree. to 1,400.degree. C., the blend comprising ZnO, Cr.sub.2 O.sub.3, V.sub.2 O.sub.5 and M.sub.2 O where M.sub.2 O is at least one metal oxide selected from Li.sub.2 O, Na.sub.2 O and K.sub.2 O. A pair of electrodes are each attached to the corresponding surface of the sintered body to obtain a humidity sensor of metal oxide which is relatively low in its resistive value and stable in its aging characteristic.
REFERENCES:
patent: 3926858 (1975-12-01), Iuchinose et al.
patent: 4015230 (1977-03-01), Nitta et al.
patent: 4080564 (1978-03-01), Nitta et al.
Watanabe Naoe
Yokomizo Yuji
Yuuki Keiji
Envall Jr. Roy N.
Japan Electronic Industry Development Association
Marcon Electronics Co. Ltd.
Sears Christopher N.
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